General Science Class 9 MCQS

General Science Class 9 MCQs with answers for 9th grade students general science and ability subject exams preparation online.

General Science Class 9 MCQs

The quantity of matter in a body is called?

1. Force
2. Mass
3. Weight
4. None

Newton’s first law of motion is also called as?

1. Law of conservation of energy.
2. Law of momentum.
3. Law of inertia.
4. Law of force.

Which of the following is non-cellular or acellular organism?

1. Fungi
2. Virus
3. Bacteria
4. Both A and C

A group of similar cells combine together to form :

1. Organ
2. System
3. Cell
4. Tissue

A localized group of organisms that belong to the same species is called :

1. Biosphere
2. Community
3. Ecosystem
4. Population

Increased quantity and quality of fish production?

1. Fisheries
2. Farming
3. Animal husbandry
4. Forestry

Study of remote past organic life, with the help of fossils?

1. Entomology
2. Paleontology
3. Taxonomy
4. Histology

Laws and techniques of physics are applied to explain the living processes of life?

1. Biometry
2. Biostatistics
3. Biophysics
4. Bio-economics

Science of diagnosis and treatment of diseases :

1. Agriculture
2. Medicine
3. Surgery
4. Both B and C

Scientific name of frog is :

1. Palaeon
2. Rana tigrina
3. Periplaneta
4. Pheretima

Volvox is a polyphyletic genus of :

1. Green algae
2. Red algae
3. Brown algae
4. None of these

Select the odd one of the following?

1. Theory
2. Law
3. Hypothesis
4. Ratio

Field of research that examines mathematical representations of biological system called :

1. Ratio
2. Mathematical biology
3. Proportion
4. Law

Biological method involves all of the following except?

1. Data collection
2. Observation
3. Experiment
4. Proportion

Scientific reasoning moves from specific to general :

1. Inductive
2. Deductive
3. Observation
4. Both a and b

Quantitative observation is the use of :

1. Senses
2. Equipment
3. Guess
4. Ratio

Equation stating that two ratios are equal :

1. Ratio
2. Proportion
3. Guess
4. Senses

The comparison of two values is called :

1. Ratio
2. Proportion
3. Graph
4. Table

What is a hypothesis?

1. The same thing as an unproven theory
2. A tentative explanation that can be tested and is falsified
3. A verifiable observation
4. A fact based on quantitative data that is falsified

In data organization, which method is mostly useful?

1. Table
2. Graph
3. Ratio
4. Both a and b

Which of the following is the correct way of writing a scientific name of an organism?

1. Houbara bustard
2. E.coli
3. Alium Cepa
4. Canis lupis

Select the mismatched one of the following?

1. Plantae → Pteridophyta
2. Fungi → Mucor
3. Protista → Paramecium
4. Animalia → Amoeba

All are involve in classification except?

1. Analogous
2. Homologous
3. Cytology
4. Genetics

In the taxonomic hierarchy choose the term which encompasses all other in the list?

1. Genus
2. Species
3. Order
4. Class

In four kingdom classification, kingdom Metaphyta includes all of the following except?

1. Algae
2. Angiosperm
3. Gymnosperm
4. Bryophyta

In five kingdom system virus placed in :

1. Monera
2. Protista
3. Plantae
4. None of these

Biological name of cat?

1. Felis catus
2. Azadirachta indica
3. Alium Cepa
4. Canis lupis

Members of which kingdom have cell wall and are all heterotrophic?

1. Monera
2. Protista
3. Plantae
4. Fungi

Biodiversity is effected with :

1. Pollution
2. Deforestation
3. Over hunting
4. All of these

What is a function of the rough endoplasmic reticulum?

1. Aerobic respiration
2. Intracellular digestion
3. Synthesis of steroids
4. Synthesis of protein

Which process allow movement in and out of cell?

1. Osmosis
2. Diffusion
3. Active transport
4. All of these

Secondary wall is made up of :

1. Pectin and cellulose
2. Cellulose and protein
3. Cellulose and lignin
4. Lignin and pectin

Select the odd one of the followings?

1. Active transport
2. Diffusion
3. Facilitated diffusion
4. Osmosis

Cell organelle found in animal cell and help intracellular digestion?

1. Lysosome
2. Ribosomes
3. Mitochondria
4. Golgi apparatus

Select the mismatched one of the followings?

1. Plastids → Storage of chemicals
2. Centriole → Help in cell division
3. Ribosomes → Synthesis of steroids
4. Mitochondria → Synthesis of ATP

Which of the following is mismatched?

1. Anaphase → Chromatids move
2. Prophase → Centriole move
3. Telophase → Nuclear membrane disappear
4. Metaphase → Chromosome line up

Which process occurs during prophase of mitosis in an animal cell?

1. Division of centromeres
2. Formation of chromosomes
3. Replication of DNA
4. Separation of centrioles

Sequence of physiological changes by which cell commit suicide?

1. Apoptosis
2. Necrosis
3. Autophagy
4. Both A and B

A type of cell division in which spore mother cell produce spores?

1. Amitosis
2. Mitosis
3. Meiosis
4. Both A and B

Stage of mitosis in which chromatids reach the poles and their movement ceases?

1. Prophase
2. Metaphase
3. Anaphase
4. Telophase

Phenomenon in which pair of homologous chromosome fails to separate called?

1. Non-disjunction
2. Terminalization
3. Synapsis
4. Linkage

Enzymes are :

1. Steroid in nature
2. Protein in nature
3. Lipid in nature
4. Carbohydrate in nature

Metabolic reactions are :

1. Constructive reactions
2. Destructive reactions
3. Inhibiting reactions
4. Both A and B

The point where the enzyme is most active is known as :

1. Neutral pH
2. Acidic pH
3. Basic pH
4. Optimum pH

Active site continuously changes it shapes until the substrate do not bind to it, is statement of :

1. Induce fit model
2. Lock and key model
3. Fluid mosaic model
4. Both A and B

Which one of the following is mismatched?

1. Proteases → Carbohydrate
2. Lipases → Lipids
3. Trypsin → Protein
4. All are correctly matched

Chemical reaction requires particular conditions to carry down at proper rate, especially?

1. Temperature and Nature
2. Nature and Pressure
3. Nature and Structure
4. Temperature and Pressure

All are factors affecting enzyme activity except?

1. pH
2. Substrate concentration
3. Organic solvent
4. Temperature

Rate of reaction will increase when temperature:

1. Increases
2. Decreases
3. Below 10°C
4. Both A and B

In an oxidation process 14135KJ energy is release, how many moles of glucose consume during this process?

1. 1
2. 3
3. 5
4. 10

Stage of aerobic respiration takes place at the cristae of mitochondria called?

1. Electron transport chain
2. Glycolysis
3. Kreb’s cycle
4. C3 cycle

Loss of electron and proton is called?

1. Oxidation reaction
2. Reduction reaction
3. Redox reaction
4. All of these

Each mole of ATP store energy?

1. 7.3 kcal/mole
2. 7.3kj/mole
3. 17.3kcal/mole
4. 17.3kj/mole

Fundamental molecule produced during photosynthesis is :

1. Glucose
2. Amino acid
3. Fatty acid
4. Nucleotide

Light dependent reaction takes place in :

1. Stroma
2. Thylakoid
3. Cristae
4. Cisternae

Splitting of water in presence of light called?

1. Hydrolysis
2. Glycolysis
3. Photolysis
4. None of these

Select one the mismatched?

1. Protein → Amino acid
2. Carbohydrate → Glucose
3. Fats → Starch
4. Nucleic acid → Nucleotide

Deficiency of Vitamin-K cause?

1. Rickets
2. Anemia
3. Scurvy
4. Beriberi

Period of rapid growth and development called?

1. Childhood
2. Adult hood
3. Adolescence
4. Both A and B

Deficiency of dietary protein, causes an imbalance in the gastro-intestinal system?

1. Marasmus
2. Edema
3. Diarrhea
4. Kwashiorkor

In human digestive system trachea and esophagus both connect to the :

1. Large intestine
2. Stomach
3. Pharynx
4. Rectum

All are sources of calcium except?

1. Red meat
2. Green leafy vegetables
3. Broccoli
4. Nuts

The movement of organic materials (food) take place through :

1. Xylem
2. Vessels
3. Tracheid
4. Phloem

Human plasma proteins include which of the following?

1. Fibrinogen
2. Haemoglobin
3. Albumin
4. Both A and C

Which of these are involved in the clotting of blood?

1. Platelets
2. Haemoglobin
3. Albumin
4. Globulin

The branch of Chemistry which deals with hydrocarbons :

1. Industrial chemistry
2. Inorganic chemistry
3. Organic chemistry
4. Physical chemistry

In human heart blood returning from lungs first drains into the :

1. Left atrium
2. Left ventricle
3. Right atrium
4. Right ventricle

Root hairs are most important to a plant because they :

1. Store starch
2. Contain xylem tissues
3. Provide a habitat for nitrogen fixing bacteria
4. Increase the surface area for absorption

A type of circulatory system blood flow through the spaces among tissues called?

1. Open type circulatory system
2. Close type circulatory system
3. Pulmonary circulatory system
4. All of these

The atomic mass of an element expressed in gram is :

1. Gram molecular mass
2. Gram atomic mass
3. Gram formula mass
4. Mole

Which of the following can be separated by physical means?

1. Mixture
2. Element
3. Compound
4. Substance

Part of root between epidermis and endodermis called?

1. Xylem
2. Root hair
3. Phloem
4. Cortex

The molar mass of H2SO4 is :

1. 98 a.m.u
2. 9.8 gm
3. 98 gm
4. 9.8 a.m.u

The Molecule consist of two atoms is :

1. Monoatomic molecule
2. Polyatomic molecule
3. Hetero atomic molecule
4. Di atomic molecule

A formula that indicates actual number and type of atoms in a molecule is called?

1. Chemical formula
2. Empirical formula
3. Molecular formula
4. Formula mass

Ethyl alcohol was prepared by :

1. Ibne-Sina
2. Al-Razi
3. Al-Beruni
4. Jaber bin-Hayan

Which of the following is a homo atomic?

1. H2
2. NH3
3. H2O
4. CO2

The Empirical formula of hydrogen peroxide is :

1. H2O2
2. HO
3. OH
4. O2H2

A piece of matter in pure form is termed as :

1. Redical
2. Mixture
3. Compound
4. Substance

In an atom number of protons and neutrons are added to obtain :

1. Number of electrons
2. Number of nucleons
3. Atomic number of element
4. Number of isotopes

If proton number is 19, electron configuration will be :

1. 2, 8, 9
2. 2, 8, 8, 1
3. 2, 8, 1
4. 2, 8, 3

If nucleon number of potassium is 39, number of neutrons will be :

1. 39
2. 19
3. 20
4. 29

The isotope C-12 is present in abundance of :

1. 96.9%
2. 97.6%
3. 98.8%
4. 99.7%

Electronic configuration is distribution of :

1. Proton
2. Neutron
3. Electron
4. Positron

Which one of the following is most penetrating?

1. Electron
2. Proton
3. Alpha particle
4. Neutron

How many sub-shells in a L shell?

1. One
2. Two
3. Three
4. Four

De Broglie extend the wave particle duality to electron in :

1. 1920
2. 1922
3. 1923
4. 1925

Name the material of screen which used in Rutherford atomic model?

1. Aluminum foil
2. Zinc sulphide
3. Sodium sulphide
4. Aluminum sulphide

Which rays are used for sterilization of medical instruments?

1. α-rays
2. β-rays
3. γ-rays
4. x-rays

In 1869 Mandeleev put forward his periodic law about :

1. Atomic Number
2. Chemical properties
3. Physical properties
4. Atomic Mass

The periodic table divided into S, P, d, and f block based on :

1. Atomic Radius
2. Electronic Configuration
3. Ionization Energy
4. Electron Affinity

4th and 5th period in periodic table are known as?

1. Short period
2. Long period
3. Normal period
4. Very long period

Which one of the following decreases along the period?

1. Ionization Energy
2. Atomic Radius
3. Electronegativity
4. Electron Affinity

The elements of VIIA group are known as :

1. Lanthanides
2. Actinides
3. Halogens
4. Nobel Gases

According to Mosely the chemical properties of elements are the periodic function of their?

1. Atomic Size
2. Atomic Mass
3. Atomic Radius
4. Atomic Number

The shielding effect across the period :

1. Increases
2. Decrease
3. Moderate
4. Same

The ability to attract shared pair of electron is called :

1. Electron Affinity
2. Electronegativity
3. Ionization Energy
4. Shielding Effect

In group electron affinity values decreases from top to bottom because:

1. Atomic size normal
2. Atomic size increases
3. Atomic size decreases
4. Atomic size same

All Transition Elements are :

1. Gases
2. Metals
3. Nonmetals
4. Metalloids

An example of ionic compound is :

1. H
2. CH
3. N
4. NaCl

Interaction between highly electron deficient hydrogen and highly electronegative atom is called?

1. Covalent bond
2. Ionic bond
3. Hydrogen bond
4. Metallic bond

Two fluorine atoms share one electron each in their outermost shell to achieve electronic configuration of :

1. Xe
2. Ar
3. Kr
4. Ne

At room temperature most of ionic compounds are :

1. Amorphous solids
2. Crystalline solids
3. Liquids
4. Gases

Number of electrons lost by atoms of group IIIA equals :

1. 1
2. 2
3. 3
4. 4

Atom which loses two electrons from its outer shell to form ion is called?

1. Oxygen
2. Potassium
3. Magnesium
4. Carbon

In NaCl crystal lattice each Na ion is surrounded by:

1. 6 Cl^- ions
2. 6 Na^+ ions
3. 8 Cl^- ions
4. 12 Cl^- ions

Tendency of atoms to acquire eight electrons in their valence shell is :

1. Octet rule
2. Duplet rule
3. Triplet rule
4. None of above

Nobel gases are stable because they contain :

1. 4 electrons in valence shell
2. 6 electrons in valence shell
3. 8 electrons in valence shell
4. 10 electrons in valence shell

Bond which involve 3 shared electron pairs is a :

1. Double covalent bond
2. Single covalent bond
3. Triple covalent bond
4. None of above

A non-metal atom form anion by :

1. Loses of electrons
2. Gain of electrons
3. Loses of protons
4. Gain of protons

When two identical atoms share electron pairs and exert force on each other than bond form is :

1. Non-polar covalent bond
2. Polar covalent bond
3. Double covalent bond
4. Coordinate covalent bond

Synthetic resins are used on places where :

1. Electric resistance is required
2. Water resistance is required
3. Adhesion is required
4. Friction is required

Oxygen belongs to group VIA so number of electrons in its valence shell are :

1. 3
2. 4
3. 5
4. 6

Electron pairs which are not shared by atoms are called?

1. Electron pairs
2. Lone pairs
3. Bond pairs
4. Shared pairs

Strength of intermolecular forces from ionic or covalent bond is :

1. Weaker
2. Stronger
3. Equal
4. None of above

Ionic crystals have :

1. High melting points
2. Moderate melting points
3. Low melting points
4. None of above

Bond formed by mutual sharing of electron is :

1. Ionic bond
2. Coordinate covalent bond
3. Covalent bond
4. Metallic bond

Which of the following diagram shows atoms are bonded with same electronegativity?

1. A —–:—– B
2. A ———-: B
3. A :———- B
4. A –:——– B

Which of the following gas diffuses fastest?

1. Hydrogen
2. Chlorine
3. Fluorine
4. Helium

The vapour pressure of a liquid increases with the :

1. Increase of pressure
2. Increase of temperature
3. Increase of intermolecular forces
4. Increase the polarity of molecules

The freezing point depends upon :

1. Nature of liquid
2. Pressure
3. Temperature
4. Volume

One atmospheric pressure is equal to :

1. 10325 Pascal
2. 106075 Pascal
3. 10523 Pascal
4. 101325 Pascal

Which of the following does not affect the boiling point?

1. Intermolecular forces
2. External pressure
3. Initial temperature of liquid
4. Nature of liquid

Which of the following have sharp melting point in solids?

1. Plastic
2. Rubber
3. Glass
4. Diamond

Which of the following are lightest form of matter?

1. Solid
2. Liquid
3. Gases
4. Plasma

The liquid molecules leave the surface of liquid in evaporation process because :

1. Energy is low
2. Energy is moderate
3. Energy is high
4. None of these

The density of gases increases when its :

1. Pressure increased
2. Temperature increased
3. Volume increased
4. None of these

An alloy is the homogeneous mixture of :

1. Two solid
2. Two liquid
3. Two gases
4. Solid and liquid

A saturated solution of KCl on heating becomes :

1. Unsaturated
2. Supersaturated
3. Diluted
4. All of these

If we dissolve sand into the water, then the mixture is said to be :

1. Solution
2. Suspension
3. Colloids
4. Concentrated solution

Solubility is usually expressed in grams of the solute dissolved in ________ gram of a solvent.

1. 10 grams
2. 100 grams
3. 500 grams
4. 1000 grams

Example of heterogeneous mixture is :

1. Sugar and water
2. Sand and water
3. Salt and water
4. Ink and water

2 moles of sodium chloride (NaCl) is equal to?

1. 123 grams
2. 135 grams
3. 158 grams
4. 117 grams

10% (w/w) sugar solution mean that 10 grams of solute dissolved in?

1. 90g of water
2. 95g of water
3. 100g of water
4. 105g of water

An example of true solution is :

1. Solution of starch
2. Solution of soap
3. Ink in water
4. Tooth paste

Which solution contain more water?

1. 1.0M
2. 0.75M
3. 0.5M
4. 0.25M

When a saturated solution is diluted, it change into :

1. Saturated solution
2. Unsaturated solution
3. Concentrated solution
4. Supersaturated solution

Butter is example of solution?

1. Gas-liquid
2. Solid-liquid
3. Liquid-solid
4. Gas-solid

A solution that contain solid solute into liquid solvent is called?

1. Solids in gas
2. Liquids in solids
3. Solids in solids
4. Solids in liquid

What is the particle size in suspension?

1. 10 nm^3
2. 10 nm^2
3. Less than 10 nm^3
4. Greater than 10 nm^3

Alloy of Cu – Sn is called :

1. Brass
2. Bronze
3. Monel
4. Bell metal

Which one of the following is Alloy?

1. Graphite
2. Mercury
3. Steel
4. Water

Value of 1 Farady is equal to :

1. 9.65 C
2. 9650 C
3. 96500 C
4. 965 C

Which one of the following is non-electrolyte?

1. Aqueous HCl
2. Aqueous NaCl
3. Molten KCl
4. Urea

Which one of the following is oxidizing agent?

1. Al
2. H2S
3. Cl2
4. NaH

Which one of the following is reducing agent?

1. H2S04
2. HNO3
3. Al
4. I2

Which one of the following forms weak electrolyte solution with water?

1. HCl
2. KOH
3. NaCl
4. CH3COOH

In Daniel cell ____ is used as cathode.

1. Zn
2. Cu
3. Sn
4. Pb

1 g equivalent weight of Aluminum is equal to :

1. 9 g
2. 27 g
3. 54 g
4. 1 g

Which one of the following is correct statement?

1. Oxidation occurs at cathode
2. Reduction occurs at anode
3. Reduction occurs at cathode
4. Ions lose electrons at cathode

Which one metal belongs to Alkaline earth metal?

1. B
2. Bi
3. Br
4. Ba

Which one of the following is Barium?

1. Bi
2. Be
3. Ba
4. Br

Chlorine can be displaced by :

1. F
2. Br
3. I
4. At

Which one of the following is strong acid?

1. HF
2. HCl
3. HBr
4. HI

Which Halogen exists in liquid state?

1. F2
2. CI2
3. Br2
4. I2

Non-metals of ____ group are gases.

1. VI-A
2. VII-A
3. VIII-A
4. VIII-B

Which one of the following is Metalloid?

1. Br
2. Se
3. S
4. Sr

Which one of the following act as oxidizing agent?

1. Be
2. Mg
3. Na
4. Cl

Which gas can turn lime water milky?

1. O2
2. NO2
3. CO2
4. N2

Which compound is known as lunar caustic?

1. KNO3
2. AgNO3
3. NaOH
4. NaNO3

All accurately known digits and first doubtful digit in an expression are known as?

1. Non-significant figures
2. Significant figures
3. Estimated figures
4. Crossed figures

Centrifugal force is always directed :

1. Towards centre
2. Away from centre
3. Along the circular path
4. All sides

Friction opposes motion between two bodies in contact because of :

1. Charges on bodies
2. Weight of bodies
3. Roughness of surfaces
4. None of above

Which statement is true for limiting frictional force?

1. It is greater than rolling friction
2. It is greater than sliding friction
3. It is greater than kinetic friction
4. All are true

A pair of unlike parallel forces having different lines of force produce :

1. Equilibrium
2. Torque
3. A couple
4. Unstable equilibrium

Head to tail rule can be used to add ______ forces.

1. Two
2. Three
3. Five
4. Any number of

A force of 15 N makes an angle of 60° with horizontal. Its vertical component will be :

1. 15 N
2. 10 N
3. 13 N
4. 7 N

A body is in equilibrium when it has :

1. Uniform speed
2. Uniform acceleration
3. Both a and b
4. Zero acceleration

A body is in neutral equilibrium when its center of gravity :

1. Is at the lowest position
2. Remains at same height
3. Is at highest position
4. Is at its base

Bunsen burner is made stable by :

1. Increasing its length
2. Increasing its mass
3. Decreasing its base area
4. Increasing its base area

A right rope walker carries a long pole to :

1. Increase his weight
2. Raise his centre of gravity
3. Lower his centre of gravity
4. Keep his centre of gravity in fixed position

Stability of a racing car is increased by :

1. Increasing its height
2. Raising its centre of gravity
3. Decreasing its width
4. Lowering its centre of gravity

The springs in brakes and clutches are used :

1. To restore original position
2. To measure forces
3. To absorb shocks
4. To absorb strain energy

Which of the following material is more elastic?

1. Rubber
2. Glass
3. Steel
4. Wood

If a spring stretches easily then its spring constant has :

1. Large value
2. Small value
3. Constant Value
4. Both (a) and (b)

What is the unit for the spring constant?

1. Nm
2. Nm^-2
3. Nm^-1
4. Nm^2

Which of the following is not a unit of pressure?

1. Pascal
2. Bar
3. Atmosphere
4. Newton

The motion of a falling ball towards Earth is due to the :

1. Weightlessness
2. Gravitational force
3. Acceleration due to gravity
4. Both ‘a’ and ‘b’

Newton’s law of gravitation holds between every two objects on the :

1. On Earth
2. On Jupiter
3. On Moon
4. On Universe

Numerical value of G is :

1. G = 6.673 10^-11 Nm^2 kg^-2
2. G = 6.673 10^11 Nm^2 kg^-2
3. G = 6.763 10^-11 Nm^2 kg^-2
4. G = 6.763 10^11 Nm^2 kg^-2

Gravitational field of Earth is directed :

1. Towards the Earth
2. Towards the Sun
3. Towards the Moon
4. Away from Earth

Who was the first scientist who gave the concept of gravitation?

1. Einstein
2. Newton
3. Faraday
4. Maxwell

According to Newton’s law of universal gravitation force ∝ :

1. m1 m2
2. 1/r2
3. r2
4. Both (a) and (b)

Gravitational force is always :

1. Repulsive
2. Attractive
3. Both
4. None of these

]Numerical value of ______ remains constant every where.

1. g
2. G
3. F
4. W

Gravitation force is ______ of the medium between the objects.

1. Dependent
2. Independent
3. Both ‘a’ and ‘b’
4. None of these

Near Earth’s surface g = :

1. 10 ms^-2
2. 1.6 ms^-1
3. Both (a) and (b)
4. None of these

Newton’s law of gravitation is consistent with Newton’s ____ law of motion.

1. 1st
2. 2nd
3. 3rd
4. All of them

Spring balance is used to measure :

1. Mass
2. Weight
3. Elasticity
4. Density

Your weight as measured on Earth will be _____ on Moon?

1. Increased
2. Decreased
3. Remains same
4. None of these

Mass of Earth is :

1. 6.0 x 10^23 kg
2. 6.0 x 10^24 kg
3. 6.0 ´ 10^25 kg
4. 6.0 ´ 10^26 kg

A communication satellite completes its one revolution around the Earth in ______ hours.

1. 6
2. 12
3. 18
4. 24

_______ are used to put satellites into orbits.

1. Helicopter
2. Aeroplane
3. Rocket
4. None of these

The critical velocity vc = :

1. gR
2. g/R
3. √gR
4. √g/R

The velocity of a satellite is _____ of its mass.

1. Independent
2. Dependent
3. Equal
4. Double

An object with particles close together and vibrating describes a :

1. Gas
2. Liquid
3. Solid
4. All three

A burning candle is an example of ______ state of matter.

1. Gas
2. Liquid
3. Solid
4. All three

During which process a gas becomes a liquid?

1. Melting
2. Freezing
3. Condensing
4. Boiling

A solid can :

1. Have a fixed shape
2. Be easily compressed
3. Take a shape of container
4. Have freely moving molecules

If a gas is heated in a sealed cylinder, then _______ increases.

1. Pressure inside the container
2. Average kinetic energy of the particles
3. Temperature of the gas
4. All of them

A gas in a container of fixed volume is heated. What happens to the molecules of the gas?

1. They collide less frequently
2. They expand
3. They move faster
4. They move further apart

If force of 6N displaces an object 2m in the direction of force, then work done will be :

1. 0
2. 12 Joule
3. 3 Joule
4. Both b and c

If a body of mass 1 kg is moving with velocity of 1 m/sec. then K.E of the body will be?

1. 3 Joules
2. 4 Joules
3. 1/2 Joule
4. 1 Joule

If a machine performs 20 J of work in 10 sec. then it power is :

1. 200 watt
2. 20 watt
3. 2 watt
4. 0.2 watt

The energy released during fission or fusion reaction is called?

1. Solar energy
2. Geothermal energy
3. Tidal energy
4. Nuclear energy

Which is the renewable source of energy?

1. Solar and wind
2. Coal
3. Natural gas
4. Petroleum

The ratio of output to input is called?

1. Energy
2. Work
3. Power
4. Efficiency

Work done per unit time is called :

1. Efficiency
2. Energy
3. Power
4. Force

Coal, gas and oil are all examples of :

1. Tidal energy
2. Nuclear energy
3. Fossil fuel energy
4. Biomass energy

______ is not a renewable source of energy.

1. Solar energy
2. Coal
3. Wind energy
4. Geothermal energy

Heat is the form of :

1. Pressure
2. Weight
3. Energy
4. All

Heat capacity is the product of mass and :

1. Boiling point
2. Freezing point
3. Energy
4. Specific heat of material

The amount of heat needed to convert a substance from liquid to gas is called?

1. Heat of vaporization
2. Specific heat
3. Latent heat of fusion
4. All

Thermal energy transfer required per unit mass to increase the temperature by 1°C or 1 K is called?

1. Latent heat of Vaporization
2. Specific heat capacity
3. Latent heat of fusion
4. Thermal capacity

A fixed temperature at which a pure liquid boils is called :

1. Melting point
2. Freezing point
3. Boiling point
4. Both ‘a’ and ‘b’

The melting point of ice at normal atmospheric pressure is :

1. 0 °C
2. 0 K
3. 100 °C
4. Both ‘a’ and ‘b’

Thermal energy transfer required to change a liquid into gas without changing its temperature is called?

1. Latent heat of freezing
2. Latent heat of vaporization
3. Latent heat of boiling
4. Latent heat of melting

Evaporation can occur at :

1. Freezing point
2. Melting point
3. Boiling point
4. All temperatures

Rate of evaporation of a liquid can be increased by :

1. Increasing humidity
2. Decreasing temperature
3. Increasing its boiling point
4. Decreasing atmospheric pressure

Linear thermal expansion of a solid depend upon :

1. Increasing in temperature
2. Original length
3. Properties of material
4. All of these

Techniques for manipulation of gene to achieve desirable characters are called?

1. Biotechnology
2. Biochemistry
3. Genomics
4. Gene Therapy

Part of agriculture for the development of new varieties of plant, and their fruit is :

1. Agronomy
2. Floriculture
3. Horticulture
4. Pomology

Bio elements considered as vital for life are ______ members or in numbers.

1. 13
2. 12
3. 14
4. 16

Members of different species living in specific habitat are called?

1. Community
2. Population
3. Ecosystem
4. Biomes

Part of earth where life exists is called :

1. Lithosphere
2. Atmosphere
3. Biosphere
4. Hydrosphere

Foundation of life based on :

1. Physical foundation
2. Biological foundation
3. Environmental foundation
4. Chemical foundation

Fish is one of the best source of :

1. Protein
2. Vitamin
3. Mineral
4. Carbohydrate

Radio labeling and carbon dating also show some uses of radioactive isotopes in determining the ____ of fossils.

1. Size
2. Age
3. Shape
4. Color

Problem solving approach of biology and other sciences called?

1. Logical Method
2. Analytical Method
3. Scientific Method
4. Experimental Method

Solution of biological problem starts with :

1. Hypothesis
2. Experimentation
3. Conclusion
4. Observation

The key component of the scientific process is :

1. Hypothesis
2. Observation
3. Question
4. Experimentation

Scientific reasoning based on “if-then” statement called?

1. Inductive reasoning
2. Deductive reasoning
3. Scientific reasoning
4. None

Final step of the scientific method is developing?

1. Hypothesis
2. Research
3. Conclusion
4. Observation

The uniform or constant fact of nature, virtually an irrefutable theory is :

1. Scientific theory
2. Scientific hypothesis
3. Scientific reasoning
4. Scientific law

Once you have the data, you may need to perform _____ analysis.

1. Mathematical
2. Qualitative
3. Quantitative
4. Logical

Ratio is comparison of _____ values.

1. One
2. Two
3. Three
4. Four

The cause of malaria is :

1. Bacteria
2. Virus
3. Plasmodium
4. Fungus

Degree of variation within or among the species exists on different regions of the earth called?

1. Adaptation
2. Extinction
3. Evolution
4. Biodiversity

_____ species are given scientific names.

1. All
2. Some
3. Few
4. None

______ structures have different functions (physiology) but having similar internal architecture.

1. Analogous
2. Homologous
3. Vestigial
4. Rudimentary

Science of classification is called?

1. Ecology
2. Biogeography
3. Taxonomy
4. Evolution

Most protists are :

1. Terrestrial
2. Fungal
3. Photosynthetic
4. Aquatic

Which one of the following are achlorophyllous and absorptive living organism?

1. Fungi
2. Algae
3. Bacteria
4. Plants

Scientific name of any organism should be _____ when printed.

1. Bold
2. Italicized
3. Underlined
4. Capitalized

Cutting down of trees called?

1. Afforestation
2. Conversation
3. Deforestation
4. Reforestation

Animals which are at the risk of extinction in future called?

1. Vulnerable
2. Extinct
3. Threatened
4. Endangered

Microscopes are instrument designed to produce _____ visual image.

1. Magnified
2. Enlarged
3. Inverted
4. Illuminated

Resolution of a microscope is defined as the smallest distance between _____ points.

1. One
2. Two
3. Three
4. Four

Magnification of a light microscope is formed by using mixture of the power of the eyepiece and the _____ lens.

1. Concave
2. Convex
3. Objective
4. Mirror

In plants, the cell wall is composed mainly of strong fibers of :

1. Cellulose
2. Starch
3. Proteins
4. Lipids

Cell membrane is composed of _____ layer.

1. Single
2. Double
3. Triple
4. None

Diffusion is a _____ process, which does not require energy input.

1. Active
2. Fast
3. Passive
4. Slow

Plant cell loses water and cytoplasm shrinks in a process called?

1. Osmosis
2. Deplasmolysis
3. Cytolysis
4. Plasmolysis

Special type of movement of specific substances through carrier protein is :

1. Facilitated diffusion
2. Active transport
3. Passive transport
4. Osmosis

The microtubules arranged in a very particular pattern to form centriole are _____ in number.

1. 26
2. 27
3. 23
4. 25

Chromosomes are thread like structures appear at the time of :

1. Cell growth
2. Cell death
3. Cell division
4. Cell differentiation

The two chromatids are attached to each other at :

1. Telomere
2. Histone
3. Chromonema
4. Centromere

Chromosomes in the cell which are similar to each other in shape and size are called?

1. Homologous pair
2. Heterologous pair
3. Sister chromatids
4. Non-homologous pair

Chromosomes with one arm very small and other very long called :

1. Metacentric
2. Acrocentric
3. Telocentric
4. Submetacentric

Chromosomes consist of two genetically identical copies of thread called?

1. Chromonema
2. Chromosomes
3. Chromatids
4. Chromatin

Period of extensive metabolic activity, in which cell grow, enzymes are synthesizes?

1. S phase
2. M phase
3. G2 phase
4. G1 phase

In animal meiosis produces :

1. Gametes
2. Zygotes
3. Embryos
4. Somatic cells

During metaphase homologous chromosomes arrange themselves on the :

1. Poles of the spindle
2. Equator of the spindle
3. Center of the cell
4. Randomly in the cytoplasm

Cell death which is caused by external factor called :

1. Apoptosis
2. Autolysis
3. Necrosis
4. Mitosis

Sequence of changes which occurs between one cell division and the next is called?

1. Mitosis
2. Meiosis
3. Half cycle
4. Cell cycle

There are ____ types of metabolic reactions.

1. Two
2. Four
3. Three
4. Five

Enzymes catalyze chemical reaction by _____ the activation energy.

1. Raising
2. Lowering
3. Maintaining
4. Ignoring

Presence of enzyme does not affect the nature or properties of :

1. Reactants
2. Reaction rate
3. End products
4. Activation energy

In constructive reaction _____ molecules are formed.

1. Small
2. Medium
3. Equal
4. Large

Activity of enzymes can be enhanced by :

1. Activator
2. Inhibitor
3. Substrate
4. Coenzyme

Small portion of enzyme where substrate attach with enzyme called :

1. Binding site
2. Active site
3. Catalytic site
4. Substrate site

Enzyme activity decreased by :

1. Activator
2. Substrate
3. Inhibitor
4. Coenzyme

As temperature increases, initially the rate of reaction will :

1. Decrease
2. Remain constant
3. Fluctuate
4. Increase

Enzyme changes in pH can cause enzymes to :

1. Denature
2. Activate
3. Inhibit
4. Stabilize

In the human body there are more than _____ known enzymes.

1. 800
2. 1000
3. 1200
4. 1500

The only source of energy on earth is :

1. Moon
2. Star
3. Water
4. Sun

Conversion of free energy into different forms by living organisms is called?

1. Biophysics
2. Biomechanics
3. Bioenergetics
4. Biochemistry

In living organisms energy is stored in a special molecule called?

1. ATP
2. NADH
3. RNA
4. DNA

Plant utilizes simple inorganic molecules (CO2 and H2O) to prepare :

1. Glucose and water
2. Glucose and oxygen
3. Oxygen and water
4. Oxygen and Glucose

Feeding sequences and relationships are called?

1. Food webs
2. Ecosystem
3. Food chains
4. Habitats

Photosynthesis is the only process which produces free O2 by splitting :

1. Glucose
2. Carbon Dioxide
3. Chlorophyll
4. Water

In chloroplast different pigments absorb light of different :

1. Intensity
2. Wavelength
3. Frequency
4. Amplitude

The breakdown of food molecules to release energy is called?

1. Photosynthesis
2. Fermentation
3. Respiration
4. Mitosis

Each mole of glucose produce maximum energy i.e :

1. 2527 Kj
2. 2627 Kj
3. 2727 Kj
4. 2827 Kj

Sea food is an excellent source of protein because it’s usually low in :

1. Fats
2. Carbohydrates
3. Proteins
4. Minerals

Iron deficiency is associated with decreased cognitive abilities and resistance to :

1. Infections
2. Diseases
3. Allergies
4. Inflammation

Wave of rhythmic movements of muscle contraction and relaxation called?

1. Digestion
2. Absorption
3. Peristalsis
4. Defection

Liquid secreted by the pancreas, which contains a variety of :

1. Hormones
2. Vitamins
3. Acids
4. Enzymes

Living organisms which derive their food from dead and decaying organic materials called?

1. Saprotrophs
2. Parasites
3. Predators
4. Producers

Nutrients that are needed in the highest concentration called?

1. Micronutrients
2. Macronutrients
3. Essential nutrients
4. Trace elements

Fertilizers are substances containing chemical elements such as manure or mixture of :

1. Lipids
2. Carbohydrates
3. Nitrates
4. Proteins

High solubility of fertilizers also degrades ecosystem through :

1. Acidification
2. Erosion
3. Salinity
4. Eutrophication

Carbohydrates which digested quickly are called?

1. Starch
2. Protein
3. Mineral
4. Vitamin

Each gram fat supplies the body with about ______ calories.

1. 7
2. 9
3. 10
4. 5

Loss of internal water of plant in the form of vapours from aerial parts of plants is called?

1. Evaporation
2. Respiration
3. Transpiration
4. Photosynthesis

In flowering plants xylem is made up of ____ types of tissues.

1. 1
2. 2
3. 3
4. 4

Root hair is long, thin and tubular structure, it increases surface area which increases the :

1. Rate of absorption of water
2. Rate of photosynthesis
3. Rate of respiration
4. Rate of growth

Opening and closing of stomata is also regulated by :

1. Epidermal cells
2. Guard cells
3. Root hair cells
4. Mesophyll cells

A type of cancer that affects the blood, bone marrow and lymphatic system called?

1. Lymphoma
2. Carcinoma
3. Leukemia
4. Sarcoma

Pumping of blood by the rhythmic pulsation of heart throughout the body is called?

1. Blood pressure
2. Circulation
3. Pulse
4. Heart beat

Relaxation of heart muscles and allowing the chambers to fill with blood called?

1. Diastole
2. Systole
3. Cardiac arrest
4. Heart failure

Dead cells of xylem vessels arranged vertically have empty space inside called?

1. Cell wall
2. Lumen
3. Cytoplasm
4. Chlorophyll

Colourless, irregular in shape, nucleated and larger sized cell than R.B.Cs called?

1. Erythrocytes
2. Platelets
3. Leucocytes
4. Lymphocytes

Inherited condition that affects the blood hemoglobin called :

1. Sickle Cell Disease
2. Hemophilia
3. Leukemia
4. Thalassemia

Read More: General Science MCQs for all classes and one paper test preparation online.