General Science Class 10

General Science Class 10 MCQs for 10th grade General Science and ability subject exam preparation online.

General Science Class 10 MCQs

Serve deficiency of Vitamin D results in :

1. Beriberi
2. Night Blindness
3. Scurvy
4. Rickets

How much percentage of water on the earth is freshwater?

1. 2.5%
2. 3.5%
3. 4.5%
4. 5.5%

The maximum mass of an atom is concentrated in :

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

The audible range of normal human ear is :

1. 16 Hz to 20kHz
2. 10 Hz to 31kHz
3. 67 Hz to 45kHz
4. 20 Hz to 20kHz

Short-sightedness defect can be corrected by wearing a :

1. Convex Lens
2. Concave Lens
3. Prism Lens
4. Cylindrical Lens

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

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

The branch of Chemistry which deals with hydrocarbons :

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

The biological functions which perform gaseous exchange?

1. Photosynthesis
2. Respiration
3. Both a and b
4. Growth

Plants do exchange of gases through :

1. Roots
2. Stomata
3. Stem
4. All of these

Each stoma is formed by :

1. One guard cell
2. Two guards cells
3. Three guard cells
4. Four guard cells

Respiratory surface possesses following property?

1. Thin and wet
2. Permeable
3. Very large
4. All of these

Inspiration involves :

1. Contraction of intercostals muscles
2. Contraction of diaphragm
3. Inward movement of ribs
4. Both A and B

Larynx is located on :

1. Lungs
2. Trachea
3. Bronchus
4. Bronchiole

The respiratory surface of human is :

1. Nostril
2. Bronchiole
3. Alveoli
4. Trachea

Increase in rate of breathing is due to the following?

1. Increase CO2 in blood
2. Increase O2 in blood
3. Decrease CO2 in blood
4. Decrease O2 in blood

Which of the following disorder is associated with degeneration of alveoli?

1. Bronchitis
2. Lung cancer
3. Asthma
4. Emphysema

Which of the following disorder is associated with inflammation of air passage ways?

1. Bronchitis
2. Lung cancer
3. Asthma
4. Emphysema

The internal condition of an organism is referred as :

1. Homeostasis
2. Internal environment
3. Internal metabolism
4. Feedback mechanism

A set of metabolism reaction which maintain internal environment is :

1. Positive feedback
2. Negative feedback
3. Osmoregulation
4. Homeostasis

Removal of extra liquid water is :

1. Exudation
2. Guttation
3. Respiration
4. Transpiration

Plant grow near coastal area called :

1. Xerophyte
2. Halophyte
3. Epiphyte
4. Hygrophyte

Organ of human body which is considered on the largest organ is :

1. Skin
2. Digestive tract
3. Liver
4. Brain

The maintenance of body temperature with in suitable limit is called?

1. Homeotherm
2. Thermoregulation
3. Osmoregulation
4. Heterotherm

The kidney is enclosed in a membrane called?

1. Pericardium
2. Peritoneum
3. Pleural membrane
4. Plumule

The network of blood capillaries present in the layer of skin :

1. Epidermis
2. Dermis
3. Hypodermis
4. Endodermis

Selective reabsorption in nephron takes place at :

1. Glomerulus
2. Malpighian body
3. Convulated tubules
4. Loop of Henle’s

The hormone ADH release from :

1. Pituitary gland
2. Kidneys
3. Liver
4. Lungs

The activity in relation to changes in environment is :

1. Stimulus
2. Response
3. Both a & b
4. None of these

Stimulus is detected by :

1. Receptor
2. Effector
3. Nerve
4. All of these

The type of coordination through electrochemical signals is :

1. Nervous
2. Chemical
3. Mechanical
4. All of these

The chemicals released from one cell and carried to signal some distant cell through blood are :

1. Neurotransmitters
2. Enzymes
3. Hormones
4. All of these

The part of brain involved in reasoning is :

1. Fore brain
2. Cerebrum
3. Cortex
4. Frontal lobe

The part of brain involved in balance and precision in movements is:

1. Cerebrum
2. Cerebellum
3. Thalamus
4. Medulla oblongata

Vital functions for survival of animals are regulated by :

1. CNS
2. PNS
3. Somatic sub-division
4. Autonomic sub-division

The shortest path of reflex action consists of :

1. 1 neuron
2. 2 neurons
3. 3 neurons
4. Many neurons

The type of lens in our eye is :

1. Convex
2. Concave
3. Both a & b
4. None of these

The type of coordination exhibited by Plants :

1. Nervous coordination
2. Chemical coordination
3. Mechanical coordination
4. Both a & b

The automatic process of altering focus to get sharper image of near object is :

1. Vision
2. Accommodation
3. Focus
4. All of these

The vitamin necessary for proper vision is :

1. Vitamin A
2. Vitamin B
3. Vitamin C
4. Vitamin D

A colour blind person cannot see :

1. Anything
2. Red
3. White
4. Black

The book “Kitab-ul-manazir” was written by :

1. Jabir bin Hayan
2. Ibn-al-Haitham
3. Ali Ibn-Isa
4. Bu-Ali Sina

Sensory hair-cells are present in :

1. Retina
2. Cochlea
3. Skin
4. Nose

The gonads are the target organ for :

1. FSH
2. LH
3. Both a & b
4. None of these

Irritation caused by stimulus is the main cause of :

1. Tropism
2. Movement
3. Locomotion
4. Arthritis

The frame work which gives shape to any structure called?

1. Architecture
2. Bone
3. Cartilage
4. Skeleton

The cartilage are made up of cells called?

1. Osteoclast
2. Osteocytis
3. Chondrocytes
4. Chaonocytes

The head of femur attached with :

1. Pelvic girdles
2. Pectoral girdle
3. Scapula
4. Acetabulum of pelvic gridles

The large muscles of arm is :

1. Bicep
2. Tricep
3. Tetracep
4. Pentacep

The band of tough, fibrous, connective tissue which are attached to bone at joints called :

1. Ligament
2. Tendon
3. Bicep
4. Tricep

Softening and weakening of bone in children due to deficiency of vitamin D called :

1. Osteoporosis
2. Osteoarthritis
3. Rickets
4. Rheumatic fever

The muscle which is responsible to straighten the limb is :

1. Ligament
2. Skeleton muscle
3. Flexor
4. Extensor

The pair of muscle where both work in opposite direction?

1. Antagonist
2. Cardiac
3. Smooth
4. Abductor

The process which is essential for continuing and survival of species is :

1. Digestion
2. Respiration
3. Reproduction
4. Excretion

The type of reproduction which is necessary for evolution is :

1. Vegetative propagation
2. Fragmentation
3. Sexual reproduction
4. Cloning

The unicellular structure, responsible for asexual reproduction without fusion is :

1. Pores
2. Spores
3. Gametes
4. Pollen grains

The example of stem which run horizontally on surface of soil to produce vegetatively?

1. Mint
2. Ginger
3. Onion
4. Bryophyllum

Plant stem that arise from buds on the base of parent plants are :

1. Bulb
2. Rhizome
3. Sucker
4. Runner

The type of seed production without fusion of male and female gametes is :

1. Parthenocarpy
2. Apomixes
3. Grafting
4. Scion

The female gametophyte of angiospermic plant is :

1. Embryo sac
2. Ovule
3. Ovary
4. Carpel

The 3N zygote is angiosperm develop into :

1. Seed coat
2. Cotyledon
3. Embryo
4. Endosperm

The male gonads in rabbit are :

1. Testis
2. Ovaries
3. Scrotal sac
4. Vas deferens

The female gametes are fertilized in the rear end of :

1. Oviduct
2. Fallopin tube
3. Ovaries
4. Both a and b

• The way by which gene transmits characters from parents to offspring is :

1. Genetics
2. Inheritance
3. Heredity
4. Allele

Two similar chromosomes in a cell which are similar in shape, size and position of centromere called :

1. Chromatids
2. Arms
3. Homologous
4. Homology

The chemical material of a chromosome is called :

1. Chromatin
2. Chromeres
3. Chromonema
4. Chromatid

The outer part of DNA helix made up of sugar and phosphate is called :

1. Nucleoprotein
2. Rungs
3. Upright
4. Phosphoester

The small segment of DNA which has information to code one protein is called :

1. Nucleotide
2. Polynucleotide
3. Gene
4. Exon

The exact duplication of DNA is called :

1. Duplication
2. Replication
3. Transcription
4. Translation

If both the parents donate same factors of a character is called :

1. Homologous
2. Heterologous
3. Homozygous
4. Heterozygous

If both the parents donate same factors of a character is called :

1. Homologous
2. Heterologous
3. Homozygous
4. Heterozygous

The Genetic constitution of a trait is called :

1. Genotype
2. Phenotype
3. Genome
4. Phenyl

The life sustaining envelop of earth is :

1. Biomass
2. Biomes
3. Biosphere
4. Atmosphere

An area where community interacts with non-living environment is called?

1. Community
2. Ecology
3. Ecosystem
4. Biome

Any biological region recognized by its climate or vegetation is called?

1. Ecosystem
2. Biomes
3. Biosphere
4. Biomass

The transfer of food material from producers through some organisms with repeated eating and being eaten is called?

1. Food pyramid
2. Food chain
3. Food web
4. Ecological pyramid

The elements in ecosystem recycle through organisms with environment is called :

1. Food chain
2. Food web
3. Chemical cycle
4. Biogeochemical

Process where nitrogenous compound of living organism convert into nitrates is called?

1. Ammonification
2. Nitrification
3. Denitrification
4. Deamination

The cold war between the organisms of a community occupying the same habitat is called :

1. Predation
2. Competition
3. Mutualism
4. Commensalism

The amount of solid waste or concentration of gases other than oxygen increase in atmosphere is called?

1. Air pollution
2. Ozone depletion
3. Acid rain
4. Greenhouse effect

The artificial manipulation, medication and recombination of DNA :

1. Genetic engineering
2. Biotechnology
3. Molecular Biology
4. Genetics

The earlier biotechnologist were :

1. Biologist
2. Agriculturist
3. Genetist
4. Farmers

The complete graph of human genome was studied by :

1. PCR
2. HGP (Human Genome project)
3. Medicine
4. Soma-clonal

Alcohol and antibiotics on large scale production by organism is an area of :

1. Environmental biotechnology
2. Fermentation
3. Biotechnology in industry
4. Medicinal biotechnology

Most of the living things use O2 to produce :

1. ATP
2. Alcohol
3. Organic acid
4. Ecological pyramid

In acidic formulation lactic acid produced from :

1. Pyruvic acid
2. Acetic acid
3. Citric acid
4. Glyceric acid

The bread dough rises during alcoholic fermentation is due to :

1. Methyl alcohol
2. CO2
3. Ethyl alcohol
4. H2O

The container use to grow bacteria on large scale are called?

1. Chillers
2. Sterilizers
3. Fermenters
4. Ferments

Naturally occurring enzyme used as a defense chemical by bacteria :

1. Defense protein
2. Restriction enzyme
3. Hydrolytic enzyme
4. Ligase enzyme

Extra circular DNA which use as vector of gene is :

1. Genome
2. Plasmid
3. Pilli
4. Ligase

Who is called father of antiseptic?

1. Alexander fleming
2. Edward Jenner
3. Lister
4. Oswald Schmiedeberg

Drugs for treatment of rheumatoid arthritis can be obtained from :

1. Animals
2. Minerals
3. Plants
4. Micro organisms

Drugs that slow normal brain functioning are categorized as :

1. Narcotics
2. Hallucinogen
3. Marijuana
4. Sedatives

Vaccination can be administered :

1. After infection
2. Before infection
3. During infection
4. All are Correct

Haris is addicted to a drug , which left the following effect on Haris: 1. Blurred vision 2. Making unseen faces in imagination 3. Euphoria. Identify the drug, to which Haris is addicted?

1. Narcotics
2. Hallucinogen
3. Antibiotics
4. Antiseptic

Which one is not the effect of misuse of antibiotics?

1. Diarrhea
2. Immunization
3. Stomach upset
4. Antibiotic resistance

Which one of the following statements is false about dynamic equilibrium?

1. It takes place in a close container
2. Concentration of reactant and products are not changed
3. Rate of forward reaction is equal to rate of reverse reaction
4. Equilibrium cannot be disturbed by any external stress

A reaction which is never goes to completion is known as reversible reaction. Reversible reaction is represented by :

1. Doted lines
2. Single arrow
3. Double arrow
4. Double straight line

For which system does the equilibrium constant, Kc has units of concentration.

1. N2(g) + 3H2(g) ⇌ 2NH3(g)
2. N2(g) + 02(g) ⇌ 2NO
3. H2(g) +12(g) ⇌ 2HI(g)
4. CO2(g) + H3(g) ⇌ CO + H2O(l)

The system is stable in equilibrium when :

1. Qc = Kc
2. Qc > Kc
3. Qc < K
4. None of these

The value of Kc increases when :

1. [Product] is less
2. [Product] is more
3. [Reactant] is more
4. [Reactant = product]

Corrosive effect on skin is caused by :

1. Acid
2. Base
3. Salt
4. Both a & b

Preservatives are used to preserve :

1. Acids
2. Bases
3. Food
4. Water

Which of the following is not an Arrhenius acid?

1. HCl
2. CO2
3. HNO3
4. H2SO4

NH3 can be a base according to :

1. Arrhenius theory
2. Bronsted-Lowery theory
3. Lewis theory
4. Both b and c

Which of the following is a Lewis base?

1. HNO3
2. CN
3. HCl
4. AlCl3

A substance that can donate a pair of electron to form coordinate covalent bond?

1. Lewis acid
2. Lewis base
3. Bronsted—Lowery acid
4. Bronsted-Lowery base

Salt among following is :

1. HCl
2. KCl
3. HNO3
4. H2SO4

Substances that react with both acids and bases are called?

1. Conjugate acids
2. Conjugate bases
3. Amphoteric substances
4. Buffers

The general formula for alkanes is :

1. CnH2n
2. CnH2n+1
3. CnH2n+2
4. CnH2n-1

Which of the following is an alcohol?

1. CH3-CHO
2. CH3-CH2-O-CH3
3. CH3-OH
4. HCOOH

Which of the following is a saturated hydrocarbon?

1. CH3-CH=CH2
2. CH3-CH2-CH3
3. CH3-C=CH
4. CH2=CH-C=CH

The prefix ‘hept’ stands for the ____ carbon atoms.

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

The functional group -COOH is used for :

1. Alkynes
2. Alcohols
3. Phenols
4. Carboxylic acids

Polyethene is :

1. Oil
2. Paper
3. Plastic
4. Wood

Acetic acid is obtained from :

1. Banana
2. Dates
3. Garlic
4. Vinegar

Alkenes :

1. Show the same general formula as alkynes
2. Have carbon-carbon triple bond
3. Have carbon-carbon double bond
4. Are saturated hydrocarbons

CH3-CH2- is _____ radical.

1. Methyl
2. Ethyl
3. n-propyl
4. Isopropyl

Glucose is :

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

______ encodes genetic information.

1. RNA
2. DNA
3. Progesterone
4. Cholesterol

The carbohydrates which contain the aldehyde group are called?

1. Saccharides
2. Ketoses
3. Pentoses
4. Aldoses

Amino acids are building blocks of :

1. Nucleic acids
2. Protein
3. Vitamins
4. Lipid

Which one of the following is a polysaccharide?

1. Fructose
2. Maltose
3. Starch
4. N.O.T

Lactose is :

1. Grape sugar
2. Honey sugar
3. Milk sugar
4. Cane sugar

What is true about a peptide?

1. It is a protein
2. It is an anhydride of carboxylic acids
3. It is an anhydride of an amine
4. It is a polyamide

Fats are solids at :

1. Ordinary room temperature
2. High temperature
3. Higher than 50°C temperature
4. N.O.T

Cotton contains ______ cellulose.

1. 30%
2. 65%
3. 85%
4. 95%

Second highest layer of Earth’s atmosphere is :

• Troposphere
• Stratosphere
• Mesosphere
• Thermosphere

Aeroplanes fly in :

1. Troposphere
2. Stratosphere
3. Mesosphere
4. Thermosphere

Atmospheric pressure decreases with the :

1. Increase in longitude
2. Decrease in altitude
3. Increase in altitude
4. Increase in latitude

Ozone layer is part of :

1. Mesosphere
2. Stratosphere
3. Thermosphere
4. Troposphere

Which is not part of greenhouse gases?

1. Carbon dioxide
2. Methane
3. Nitrous oxide
4. Oxygen

Second most abundant constituent of dry air in terms of volume after nitrogen is?

1. Nitrogen
2. Oxygen
3. Argon
4. Carbon Dioxide

Which of the following is the reason of global warming?

1. Presence of sulphite
2. Rise in CO2 concentration
3. Oxides of nitrogen
4. Formtion of ozone

The altitude on stratosphere is :

1. 40 to 45 km
2. 50 to 55 km
3. 60 to 65 km
4. 70 to 75 km

Ozone is a gas found in the layer?

1. Troposphere
2. Mesosphere
3. Stratosphere
4. Exosphere

Which of the following water borne diseases is of viral origin?

1. Typhoid fever
2. Polio
3. Dysentery
4. Diarrhea

How much percentage (%) of the Earth’s Surface is covered with water?

1. 70%
2. 60%
3. 90%
4. 75%

Which type of bond is formed between H₂O molecules?

1. Hydrogen bond
2. Ionic bond
3. Covalent bond
4. All of these

The permanent hardness of water is due to presence :

1. MgSO4
2. Mg(HCO3)₂
3. CA(HCO3)2
4. All of these

Which salts are excessively dissolved to make temporary hard water?

1. CaSO4 and CaCl2
2. KNO3 and KOH
3. CaCO3 and Ca(OH)2
4. Ca(HCO3)2 and Mg(HCO3)2

Water is a :

1. Polar solvent
2. Non-polar solvent
3. Amphiphatic solvent
4. Non-polar charged solvent

The taste of water is :

1. Sour
2. Bitter
3. Sweet
4. Tasteless

Which of the following is helpful for removal of permanent hardness?

1. Na2CO3
2. Ca(OH)2
3. CaCO2
4. Na2SO4

The Analytical Chemistry deals with instruments and methods to ______ identify and quantify the matter.

1. Mix
2. Separate
3. Differentiate
4. Manipulate

The sample may be solid, liquid, gas or a _______ in qualitative analysis.

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

Analysis deals with the identification of presence of functional groups in compounds is :

1. Physical qualitative analysis
2. Analytical qualitative analysis
3. Organic qualitative analysis
4. Inorganic qualitative analysis

Flame test of Copper Halide with bluish-green color identify the presence of :

1. Halogen
2. Hydrogen
3. Copper
4. B and C

The physical methods used to measure physical properties is called?

1. Combustion analysis method
2. Volumetric analysis method
3. Atomic emission spectroscopy method
4. Gravimetric analysis method

The error caused by improper functioning of instrument is :

1. Determinant Error
2. Systematic Error
3. Indeterminant
4. A and B

An agreement between a measured value and the accepted true value?

1. Error
2. Accuracy
3. Precision
4. All of these

Spectroscopy is the interaction of light with :

1. Liquid
2. Solid
3. Gas
4. Matter

The Gas is mobile phase in :

1. Liquid chromatography
2. Solid chromatography
3. Gas chromatography
4. None of these

It used to assess concentration or amount of given atomic, molecular or ionic chemical?

1. Chromatography
2. Conductometry
3. Spectroscopy
4. Potentiometry

Soap is the term for a salts of a :

1. Carboxylic acid
2. Citric acid
3. Sulphuric acid
4. Fatty acid

Surfactants reduce the ______ of water.

1. Viscosity
2. Surface tension
3. Boiling point
4. Melting Point

The carboxylate end of the soap molecule that is attracted to water is called?

1. Hydrophobic end
2. End point
3. Hydrophilic end
4. None

The use of potassium hydroxide produced a :

1. Hard soap
2. Soft soap
3. Moderate soap
4. All of these

The citric acid is used in preparation of cold drinks for :

1. Sweet taste
2. Bitter taste
3. Sour taste
4. Salty taste

The centrifuge machine used for separation of :

1. Juice
2. pH
3. Mud
4. Crystal

The abrasives are :

1. Water
2. Water insoluble minerals
3. Water semi soluble minerals
4. Water absorving minerals

The harvesting is most important step of :

1. Preparation of soap
2. Preparation of cold drinks
3. Preparation of sugar
4. Preparation of medicines

Which of the following is used as jet fuel?

1. Kerosene oil
2. Fuel oil
3. Petrol
4. Diesel oil

Which one of the following is not a fraction of crude oil?

1. Petroleum coke
2. Ammonia
3. Fuel oil
4. Paraffin wax

Water waves pass from deep into the shallow region and are then refracted. The characteristics of waves which will remain constant is :

1. Direction
2. Frequency
3. Speed
4. Wavelength

Which of the following is not a characteristic of a wave?

1. An amplitude
2. Period
3. Mass
4. Velocity

When an oscillating object is in simple harmonic motion, its maximum speed occurs when the object is at its :

1. Highest point
2. Lowest point
3. Equilibrium point
4. Extreme point

In an oscillating pendulum, the bob accelerates from its extreme position due to :

1. Inertia
2. Tension in the string
3. Wind
4. Gravitational force

In the ball and bowl system, the mean position is at :

1. The earth
2. Floor of the bowl
3. Center of bowl
4. Extreme position

Oscillations are damped due to the presence of :

1. Linear motion
2. Restoring force
3. Frictional force
4. Mechanical force

Sound is a form of :

1. Electrical energy
2. Thermal energy
3. Mechanical energy
4. Chemical energy

The approximate value of the speed of sound in air at 0°C temperature :

1. 332 m/s
2. 34 m/s
3. 17 m/s
4. 680 m/s

Sound travel faster in solid as compare to gases because of :

1. Gas molecules are packed loosely
2. Sound does not travel faster through a solid than a gas
3. Solid molecules are packed tightly
4. Gas molecules move faster

The two factors that affect the speed of sound in air are :

1. Humidity and volume of the air
2. Temperature and mass of the air
3. Volume and mass of the air
4. Temperature and humidity of the air

The separation between two consecutive compressions of the sound wave is called?

1. Time period
2. Frequency
3. Amplitude
4. Wavelength

The order of speed of the sound in different mediums from faster to slowest is :

1. Gas → Liquid → Solid
2. Liquid → Solid → Gas
3. Solid → Liquid → Gas
4. Gas → Solid → Liquid

Ultrasound has several uses in medicine and industry. Which one has use of ultrasound?

1. Absorption
2. Pre-natal scanning
3. Dispersion
4. Measuring humidity of air

The causes of the echo is :

1. Absorption
2. Dispersion
3. Reflection
4. Refraction

Which type of wave cannot travel through a vacuum?

1. Sound waves
2. Microwaves
3. Infra-red radiation
4. X-rays

The waves that have maximum penetrating power to treat tumors are :

1. Ultraviolet radiation
2. Microwaves
3. Gamma-rays
4. Radio waves

The electromagnetic rays used in radiotherapy to destroy cancer cells are :

1. Infrared rays
2. X-rays
3. Visible rays
4. Ultraviolet rays

The Velocity of light in a diamond is (whereas the refractive index of a diamond with respect to vacuum is 2.5)?

1. 5×10^8m/s
2. 2.5×10^8m/s
3. 1.2×10^10m/s
4. 1.2×10^8m/s

The group containing only electromagnetic waves is :

1. Light waves, Radio waves, Microwaves
2. Light waves, Radio waves, Sound waves
3. Light waves, Sound waves, Microwaves
4. Radio waves, Sound waves, Microwaves

The list that shows electromagnetic waves in order of an increasing wavelength is :

1. Microwaves, X-rays, Gamma-rays
2. Microwaves, Gamma-rays, X-rays
3. X-rays, gamma-rays, Microwaves
4. Gamma-rays, X-rays, Microwaves

The type of electromagnetic wave used in security scanners at night is :

1. Microwaves
2. Infra-red
3. Radio waves
4. X-ray

A narrow beam of white light passes from air into the glass and is refracted. The wave characteristic remains unchanged in its :

1. Direction
2. Speed
3. Frequency
4. Wavelength

The type of waves that are used in the television remote controllers?

1. Radio waves
2. Infra-red waves
3. Ultra-violet waves
4. Visible light

The color that is least deviated by a prism :

1. Violet ray
2. Red ray
3. Green ray
4. Yellow ray

The optical phenomenon in which the splitting of white light into seven distinct colors occur is called?

1. Refraction
2. Dispersion
3. Reflection
4. Diffraction

In a concave mirror, the image size depends upon :

1. Size of the object
2. Area covered by the object
3. Position of the object
4. The shape of the object

In the normal human eye, the image is formed :

1. In from of the retina
2. On the retina
3. Behind the retina
4. In between lens and retina

When a light ray enters from a denser medium to a rare medium, it bends :

1. Perpendicular to normal
2. Parallel to normal
3. Toward normal
4. Away from normal

In a compound microscope, as compared to an objective, the eyepiece lens has a focal length :

1. Zero
2. Small
3. Negative
4. Large

When the angle of refraction is 90° and the refractive index for water is 1. 33, the critical angle is :

1. 48.8°
2. 50.0°
3. 49.1°
4. 51.0°

To view dim stars, we use :

1. Compound microscope
2. Endoscope
3. Telescope
4. Simple microscope

The human eye acts like a :

1. Camera
2. Telescope
3. Projector
4. Microscope

A magnifying glass forms an enlarged :

1. Real and upright image
2. Virtual and upright image
3. Real and inverted
4. Virtual and inverted image

The entire light is reflected into the same denser medium, which is called total?

1. External reflection
2. External refraction
3. Internal reflection
4. Internal refraction

In the optic fiber, the core is made of glass or plastic of relatively :

1. Zero refractive index
2. Low refractive index
3. High refractive index
4. No refractive index

A magnifying glass is also called :

1. Endoscope
2. Simple microscope
3. Compound microscope
4. Telescope

The defect in which the image is formed beyond the retina is called?

1. Long-sightedness
2. Blind spotting
3. Short-sightedness
4. Image defect

Lenses form images through:

1. Dispersion
2. Diffraction
3. Refraction
4. Reflection

To illuminate the inaccessible places in the tooth, dentists use :

1. Convex mirror
2. Concave lens
3. Convex lens
4. Concave mirror

Branch of physics which deals with the charges at rest is called?

1. Electricity
2. Quantum
3. Electrostatic
4. Magnetism

The magnitude of force between two unit positive charges when the distance between them is 1m would be?

1. 0N
2. 1N
3. 2N
4. Columbus Constant

Coulombs law most closely resembles with :

1. Law of conservation of Energy
2. Newton’s Law of Gravitation
3. Newton’s 2nd law of Motion
4. Faraday’s law

The direction of electric force and electric field intensity is :

1. Parallel to each other
2. Perpendicular to each other
3. Opposite to each other
4. In any direction

The work done on a unit charge against electric field intensity is called?

1. Electric field
2. Electric potential
3. Electric current
4. None

The capacitance of capacitors increases when they connected in :

1. Parallel
2. Series
3. Both A and B
4. None

Two capacitors of 8µF are connected in series then the equivalent capacitance is :

1. ¼ µF
2. 2 µF
3. 3 µF
4. 4 µF

The presence of a dielectric between the plates of capacitors, the capacitance of capacitor :

1. Increases
2. Remain constant
3. Decreases
4. Remain uncharged

If the area of the parallel plate capacitor is doubled then the capacitance will be :

1. Remain uncharged
2. Half
3. Double
4. Increased two times

In an Electric circuit when Electrons move from low to high potential they will :

1. Gain Energy
2. Lose their identity
3. Lose Energy
4. Gain Potential

In an electric circuit an ammeter is always connected in :

1. Series
2. Parallel
3. Mixed
4. None

Resistance of a conductor does not depend on :

1. Length of the conductor
2. Area of crossection
3. Density
4. Resistivity

The condition when the resistance of a circuit is zero is known as?

1. Closed-circuit
2. Short circuit
3. Open circuit
4. Zero circuit

The condition for the validity of Ohm’s law is that the :

1. Temperature should remain constant
2. Current should be proportional to voltage
3. Resistance must be wire wound type
4. All of the above

Ohm’s law is not applicable to :

1. D.C. circuits
2. Small resistors
3. High currents
4. Semiconductors

Two resistances of 6 Ω and 12 Ω are connected in parallel. Their net resistance is :

1. 7 Ω
2. 6 Ω
3. 4 Ω
4. 5 Ω

The property of a body to oppose the flow of electric charge through it is called electric :

1. Capacitance
2. Resistance
3. Potential
4. Conductance

Which statement is true about the magnetic poles?

1. Unlike poles repel
2. Like poles attract
3. Magnetic poles do not effect each other
4. A single magnetic pole does not exist

What is the direction of the magnetic field lines inside a bar magnet?

1. From north pole to south pole
2. South pole to north pole
3. From side to side
4. There are no magnetic field lines

The presence of a magnetic field can be detected by :

1. Small mass
2. Stationary positive charge
3. Stationary negative charge
4. Magnetic compass

If the current in a wire which is placed perpendicular to a magnetic field increases, the force on the wire :

1. Increases
2. Decreases
3. Remains the same
4. Will be zero

Which part of a D.C motor reverses the direction of current through the coil every half-cycle?

1. The armature
2. The commutator
3. The brushes
4. The slip rings

The direction of induced e.m.f. in a circuit is in accordance with conservation of :

1. Mass
2. Charge
3. Momentum
4. Energy

The step-up transformer :

1. Increases the input current
2. Increases the input voltage
3. Has more turns in the primary
4. Has less turns in the secondary coil

The turn ratios of a transformer is 10. It means :

1. Is = 10 Ip
2. Np – 10Ns
3. Ns = 10 Np
4. Vs = 10 Vp

Metals are good conductors of electricity because they have free :

1. Electrons
2. Protons
3. Neutrons
4. Photons

The continuous flow of electrons is made possible by a device called?

1. Cathode
2. Electron gun
3. Anode
4. Filament

The electric field can be detect :

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

If the direction of magnetic field is reversed, the direction of force is :

1. Reversed
2. Not reversed
3. May or may not reversed
4. None of these

The process of emission of electrons from the hot metal surfaces is called?

1. Plastic emission
2. Thermionic emission
3. Static emission
4. Current emission

If input of a NOT gate is “1” then its output is :

1. 1
2. 0
3. May be 1 or may be 0
4. None of these

The Boolean expression of an AND gate is :

1. A . B
2. A + B
3. A x B
4. None of these

Electronics comprises the :

1. Physics
2. Engineering
3. Technology
4. All of these

The Boolean expression of an OR gate is :

1. A . B
2. A + B
3. A x B
4. None of these

The cathode ray carry :

1. Positive charge
2. Neutral
3. Negative charge
4. Positrons

Another name for a supercomputer is a :

1. High-performance computer
2. Mainframe computer
3. Maxi computer
4. None

Input, processing, output. and storage are collectively referred to as :

1. Information processing cycle
2. Hardware life cycle
3. Software life cycle
4. Information technology

___ is the output from a computer that ranks from processing input data.

1. Data
2. Computer
3. Information
4. Mouse

Which one of the following is not considered as a system software?

1. Assembler
2. Compiler
3. Interpreter
4. Tally

Which of the following is suitable for connecting different computers in an organized manner within an office building?

1. MAN
2. LAN
3. WAN
4. ANN

The name given to a sequence of instructions in a computer language, to get the desired results in?

1. Simulator
2. Decision table
3. Pseudo code
4. Algorithm

Which is the extension not suitable to an MS Word file?

1. .doc
2. .rtf
3. .docx
4. .jpeg

The neutral atoms of all of the isotopes of the same element have :

1. Different numbers of protons
2. Exact numbers of neutrons
3. An exact number of protons
4. An exact number of nucleons

Atomic mass of an element is equal to :

1. Mass of protons and neutrons
2. Mass of protons and electrons
3. Mass of electrons and neutrons
4. Mass of protons only

Consider isotope 92U^237 of uranium. The number of neutrons in it is?

1. 237
2. 329
3. 92
4. 145

The symbol denotes the proton number is :

1. P
2. N
3. Z
4. A

The number of neutron(s) in Protium is :

1. One
2. Three
3. Two
4. No

If an element B has five protons and six neutrons what will be the symbol of element B :

1. 115B
2. 11B
3. 115B
4. None

The α-radiation is :

1. A stream of fast-moving electrons
2. A form of electromagnetic radiation
3. Highly ionizing than γ-radiation
4. More penetrating than β-radiation

A radioactive nuclide emits a β-particle. The atomic number (proton number) of the nucleus number of :

1. Stays the same
2. Decreases by 2
3. Increases by 1
4. Decreases by 4

A radioactive element emits a particle from the nucleus of one of its atoms. The particle comprises two protons and two neutrons. The name of this process is called?

1. α-emission
2. β-emission
3. γ-emission
4. Nuclear fission

The type of radiation that travels in a straight line across an electric field is a/an?

1. Proton
2. Electron
3. α-particle
4. γ-particle

A powder contains 100mg of a radioactive material that emits α-particles. (See in detail)

1. 0mg
2. 25mg
3. 50mg
4. 75mg

The main source of energy in the stars is :

1. Chemical reaction
2. Nuclear fission
3. Nuclear fusion
4. Mechanical energy

The splitting of a heavy nucleus into smaller nuclei is called?

1. Fusion
2. Fission
3. Half-life
4. Gamma decay

A process in which two light nuclei combine to form a heavier nucleus is called?

1. Nuclear fusion
2. Nuclear fission
3. Beta-decay
4. Alpha-decay

A girl throws a small stone into a lake. (See in detail)

1. 0.50Hz
2. 15Hz
3. 2.0Hz
4. 50Hz

If pH value is greater than 7, then solution is :

1. Acidic
2. Basic
3. Amphoteric
4. Neutral

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