GENERAL SCIENCE CLASS 8 MCQS

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General Science Class 8 MCQs with answers for 8th grade students general science and ability exam paper preparation online.

General Science Class 8 MCQs

What is the name of layer which protect the earth from the sun:

  1. Plak
  2. Ozone
  3. Debora
  4. Trizon

Wind energy is the ____energy:

  1. Potential
  2. Transverse
  3. Kinetic
  4. None

Structure of DNA was discovered by James Watson and Francis Crick in:

  1. 1952
  2. 1953
  3. 1954
  4. 1955

Short-sightedness is due to the:

  1. Shifting of iris
  2. Elongation of eyeball
  3. Weakness of Retina
  4. Weaker muscles

Electric device that converts AC to DC is called:

  1. Battery
  2. Rectifier
  3. Both
  4. None

Who is known as Father of Genetics:

  1. Mendel
  2. Newton
  3. Jabar Bin Hayyan
  4. None

The ozone layer protects the earth from rays sent by the sun:

  1. Radioactive rays
  2. Infrared rays
  3. Gamma rays
  4. Ultraviolet rays

The SI unit of electric current is:

  1. Ampere
  2. Volt
  3. Coloumb
  4. none of these

Which among the following organ does not play a role in eliminating waste:

  1. Lungs
  2. Kidney
  3. Skin
  4. Stomach

Emission of Chlorofluorocarbon (CFCs) in the atmosphere destroyed:

  1. Ozone layer
  2. Oxygen
  3. Air
  4. Clouds

An instrument that enables us to see distant objects is called:

  1. Telescope
  2. Microscope
  3. Oscilloscope
  4. Laparoscope

Who used telescope first time in the human history to observe Jupiter Saturn and Venus:

  1. Galileo – Galilei
  2. Aristotle
  3. Al Beruni
  4. Thomas Harriot

Solar panels contain Solar Cell which are called:

  1. Photo-voltaic cells
  2. photo – electric cells
  3. photo- septic cell
  4. None

Convex lenses are also known as:

  1. Converging lenses
  2. Diverging lenses
  3. Deflecting lenses
  4. Reflecting lenses

The burning of substances in air with the release of a large amount of heat and light energy is called:

  1. Condensation
  2. Conduction
  3. Combustion
  4. Convection

The basic physical and functional unit of heredity is called:

  1. Chromosome
  2. Gene
  3. Cell
  4. None

Barcode reader is a device:

  1. Input
  2. Output
  3. Display
  4. Storage

The atmospheric pressure at any place is measured by:

  1. Altimeter
  2. Pressure Meter
  3. Thermometer
  4. Barometer
  5. None of the above

The number of Chromosomes in human cell is:

  1. 44
  2. 46
  3. 45
  4. 43

When white light is passed through a prism, it splits into ___colors:

  1. 7
  2. 8
  3. 2
  4. 4

Water has maximum density at:

  1. 2°C
  2. 3°C
  3. 4°C
  4. 5°C

The SI unit of length is:

  1. N
  2. M
  3. K
  4. J

The unit of mass is:

  1. Kg
  2. Km
  3. W
  4. N

The SI Unit of volume is:

  1. m3
  2. m2
  3. n2
  4. none

The SI is made up of how many basic units:

  1. 7
  2. 6
  3. 19
  4. 20

Nephrons are tiny units present in:

  1. Lungs
  2. Liver
  3. Kidney
  4. Skin

Which one is a non-renewable source of energy:

  1. Wind
  2. Coal
  3. Biomass
  4. Sunlight

A reaction in which heat energy is absorbed into the system is called:

  1. Exothermic reaction
  2. Endothermic reaction
  3. Elimination reaction
  4. Thermite reaction

Which of the following is an example of renewable source of energy:

  1. Petroleum
  2. Coal
  3. Natural Gas
  4. Sun
  5. All of these

What is the unit of force:

  1. Newton
  2. Joule
  3. Watt
  4. Metre

Cerebellum is a part of the brain which lies in:

  1. Fore brain
  2. Mid brain
  3. Hind brain
  4. Spinal cord

Vitamin ___ is needed for the formation of a light-sensitive pigment in the retina:

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

The transfer of characteristics between parents and offspring is called:

  1. Evolution
  2. Inheritance
  3. Genetic drift
  4. Mutation

The SI unit of energy is:

  1. Kelvin
  2. Joule
  3. Temperature
  4. Mole

Which of the following liquids is used in the clinical thermometer:

  1. Water
  2. Alcohol
  3. Mercury
  4. Oxygen

What is the substance that causes undesirable change to the environment:

  1. Climate Change
  2. Pollution
  3. Pollutant
  4. None

Which system is responsible to communicate and coordinate for the body functions:

  1. Circulatory System
  2. Respiratory System
  3. Digestive System
  4. Nervous System

The nervous system is a network of:

  1. Neurons
  2. Spinal cord
  3. Nerves
  4. Lobes

Which are the basic structural and functional units of the nervous system:

  1. Axons
  2. Nephrons
  3. Neurons
  4. None

Brain is enclosed in a hard-bony protective structure called:

  1. Sternum
  2. Cranium
  3. Ribcage
  4. Pelvis

The structure of brain is very similar to the structure of:

  1. Egg
  2. Orange
  3. Watermelon
  4. Walnut

Which of the following is the boss of human body:

  1. Heart
  2. Brain
  3. Lungs
  4. Liver

How many parts of the brain are there:

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

Which is the largest part of the brain and comprises two hemispheres:

  1. Hindbrain
  2. Midbrain
  3. Forebrain
  4. None

Which controls actions like thinking, feelings, memory, hearing, seeing, speech and decision making:

  1. Hindbrain
  2. Forebrain
  3. Midbrain
  4. None

Which lies the base of the thalamus and controls the body temperature, feelings of hunger and thirst:

  1. Thalamus
  2. Epithalamus
  3. Hypothalamus
  4. Cerebrum

The smallest part of the brain is:

  1. Thalamus
  2. Hindbrain
  3. Forebrain
  4. Midbrain

How many parts of hindbrain are there:

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

The ___ is a bridge like structure which links different parts of the brain:

  1. Pons
  2. Midbrain
  3. Cerebellum
  4. Thalamus

The quick action in which brain is not involved is called a:

  1. Voluntary Action
  2. Reflex Action
  3. Involuntary Action
  4. Automatic Action

Respiration is an involuntary process in _____ way:

  1. When voluntary respiration is not possible
  2. When voluntary respiration is possible
  3. Both A and B
  4. None

The main excretory organ is:

  1. Liver
  2. Skin
  3. Kidney
  4. Lungs

The renal artery transports blood to the:

  1. Kidneys
  2. Lungs
  3. Liver
  4. Skin

Replacement of malfunctioning organ by a healthy organ is called:

  1. Transformation
  2. Transplantation
  3. Translocation
  4. Transpiration

The artificial kidney machine is called:

  1. Hemodialysis
  2. Nephroscopy
  3. Renal lithotripsy
  4. Dialysis machine

Forebrain is also known as:

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

A Barometer is device used to measure:

  1. Humidity
  2. Atmospheric Pressure
  3. Room Temperature
  4. Salt in sea water

The multiplication of new cells takes place by a process known as:

  1. Cell Division
  2. Cell Growth
  3. Cell Differentiation
  4. Cell Specialization

The nucleus contains a hereditary material called:

  1. Mitochondria
  2. Chromosomes
  3. Ribosomes
  4. Lysosomes

Which takes place when sex cells are divided and gametes are formed during the process of reproduction in humans:

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

Nucleus is responsible for cell division because it contains nuclear material called:

  1. Mitochondria
  2. Ribosomes
  3. Lysosomes
  4. Chromosomes

Chromosomes are made up of:

  1. Proteins and Nucleic Acid
  2. Carbohydrates and Lipids
  3. Proteins and Minerals
  4. Nucleic Acid and Carbohydrates

The Deoxyribonucleic acid is abbreviated as:

  1. RNA
  2. DNA
  3. mRNA
  4. rRNA

Which among the following is not the stage of mitosis:

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

In which stage of mitosis where chromosomes reach towards their respective poles:

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

How many daughter cells are produced from mitosis:

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

How many daughter cells are produced from meiosis:

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

DNA is a very large molecules and consists of units called:

  1. Amino acids
  2. Nucleotide
  3. Cells
  4. Molecules

A nucleotide consists of:

  1. Phosphate
  2. Sugar
  3. Base
  4. All of these

Which among the following is not the type of nitrogenous bases:

  1. Adenine
  2. Thymine
  3. Tracil
  4. Cytosine
  5. Guanine

The information in the DNA is stored in the form of code having ____ organic bases:

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

Which of the following is not the organic bases of DNA:

  1. Adenine
  2. Cytosine
  3. Thymine
  4. Uracil

The process of making copies of DNA is called:

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

The ___is made up of a double helix of two complementary strands:

  1. RNA
  2. Chromosome
  3. DNA
  4. Protein

In the bacterial cell, the DNA is found floating in the:

  1. Mitochondria
  2. Nucleus
  3. Cell Wall
  4. Cytoplasm

Small pieces of DNA are called:

  1. Plasmids
  2. Replica
  3. Template
  4. Clone

Which is used in genetic engineering because of its ability to multiply in shortest span of time:

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

Which vitamin whose gene is inserted in the rice plant creating a genetically modify rice variety:

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

In which organism, the human insulin is inserted for the commercial preparation of insulin:

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

Which of the following substances contain disease producing pathogens in the weakened form:

  1. Vaccines
  2. Antibiotics
  3. Antibodies
  4. Plasmids

Infants (children) should be immunized with BCG (Bacille Calmette-Guerin) vaccines against:

  1. Malaria
  2. Tuberculosis
  3. Measles
  4. Hepatitis

MMR vaccines are given to children to develop resistance against:

  1. Malaria
  2. TB
  3. Measles
  4. Hepatitis

Which of the following disease can be treated by the use of vaccine:

  1. Diabetes
  2. AIDS
  3. Cancer
  4. Measles

The production of human growth hormone is used for the treatment of:

  1. Dwarfism
  2. AIDS
  3. Cancer
  4. Measles

The most dangerous type of pollution is:

  1. Water Pollution
  2. Air Pollution
  3. Land Pollution
  4. None

Which one of the following affects the photosynthesis and growth of plants:

  1. Hydrogen
  2. Oxygen
  3. Nitrogen
  4. Acid Rain

Following are the constituent of polluted air cause of Acid rain except:

  1. Argon
  2. Nitrogen
  3. Sulphur dioxide
  4. Oxygen

Which gas is produced when trees and fossil fuels are burnt:

  1. Carbon monoxide
  2. Carbon dioxide
  3. Nitrogen oxide
  4. Oxygen

Which gas among the following is a major greenhouse gas:

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

The average temperature of the surface of the earth increases is known as:

  1. Climate Change
  2. Global Warming
  3. Green House Effect
  4. Ozone Depletion

This is layer of atmospheric gas that absorbs harmful ultraviolet rays from Sun:

  1. Ozone Layer
  2. Troposphere
  3. Stratosphere
  4. Mesosphere

Ozone Layer restricts which one of the following:

  1. Infrared Rays
  2. Ultraviolet Rays
  3. X-Rays
  4. Gamma Rays

Which gas is emitted by incomplete combustion of fuel:

  1. Carbon Dioxide
  2. Carbon Monoxide
  3. Nitrogen Oxide
  4. Sulfur Dioxide

The poisonous gas which is the main byproduct of motor vehicle with irritating smell is:

  1. Carbon Dioxide
  2. Carbon Monoxide
  3. Nitrogen Oxide
  4. Sulfur Dioxide

The animal included in the endangered species is:

  1. Lions
  2. Giant pandas
  3. Elephants
  4. Kangaroos

The step which can save the earth and natural resources:

  1. Burning of fossil fuels
  2. Cut down more trees
  3. Waste more water
  4. Use recycled and reusable material

The permanent destruction of forests to make the land available for other uses is called:

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

Which of the following equations represents a addition reaction:

  1. AB → A+B
  2. A → AB
  3. A+B → AB
  4. AB → A+C

A single compound breaks down to form two or more simpler substances are called:

  1. Combination Reaction
  2. Decomposition Reaction
  3. Neutralization Reaction
  4. Addition Reaction

The term acid comes from the Latin word:

  1. Acere
  2. Acidos
  3. Acare
  4. Acre

A substance which produces hydrogen ion (H+) in the aqueous solution is called:

  1. Base
  2. Acid
  3. Oxidizing agent
  4. Reducing agent

A substance which produces hydroxyl ion (OH)- in the aqueous solution is called:

  1. Oxidizing agent
  2. Reducing agent
  3. Base
  4. Acid

The resulting solution is neither acidic nor basic neutral. This process is called:

  1. Ionization
  2. Oxidation
  3. Decomposition
  4. Neutralization

The reaction in which an acid and a base react to form salt and water only is known as ____ reaction:

  1. Neutralization
  2. Ionization
  3. Oxidation
  4. Decomposition

The soapy touching property of substance are known as:

  1. Acids
  2. Bases
  3. Salts
  4. Oxides

Tartaric Acid is found in:

  1. Orange and Mango
  2. Lemon and Apple
  3. Tamarind and Grapes
  4. All of these

Some fruits like mango, lemon, raw grapes, oranges, etc have a sour taste to the presence of:

  1. Tartaric acid
  2. Malic acid
  3. Oxalic acid
  4. Citric acid

Lactic Acid is found in:

  1. Yogurt
  2. Milk
  3. Butter
  4. Ice Cream

Ascorbic Acid is found in:

  1. Mangoes and Grapes
  2. Alma and Citrus Fruits
  3. Bananas and Apples
  4. Pineapples and Watermelon

Which of the following would be most useful in testing if a substance is either an acid or a base:

  1. pH indicator strips
  2. Acid-base indicator
  3. Litmus paper
  4. Filter paper

When blue litmus paper dipped acids, its colour change to:

  1. Pink
  2. Blue
  3. Yellow
  4. Red

When red litmus paper dipped basic, its colour change to:

  1. Blue
  2. Pink
  3. Red
  4. Dark

The pH scale is a measure of the acidity or alkalinity of a solution, and it ranges between:

  1. 1 – 10
  2. 1 – 14
  3. 5 – 15
  4. 0 – 12

Which best describes milk:

  1. Slightly Acidic
  2. Slightly Basic
  3. Strongly Acidic
  4. Strongly Basic

Which lists the substances from least to most acidic:

  1. Blood, milk, ammonia, orange juice
  2. Blood, ammonia, milk, orange juice
  3. Milk, blood, orange juice, ammonia
  4. Ammonia, blood, milk, orange juice

Which substance has a pH value closest to neutral:

  1. Ammonia
  2. Blood
  3. Milk
  4. Organic juice

Which substance is the most alkaline:

  1. Milk
  2. Blood
  3. Ammonia
  4. Organic juice

In an acidic medium, phenolphthalein is colourless and in a basic medium, it is:

  1. Green
  2. Blue
  3. Yellow
  4. Pink

In an acidic medium, bromophenol blue is yellow and in a basic medium, it is:

  1. Blue
  2. Pink
  3. Red
  4. Yellow

In an acidic medium, methyl orange is orange (red) and in a basic medium, it is:

  1. Red
  2. Yellow
  3. Pink
  4. Blue

What is the colour of phenolphthalein indicator in basic medium:

  1. Red
  2. Yellow
  3. Pink
  4. Blue

Force per unit area is called:

  1. Volume
  2. Density
  3. Velocity
  4. Pressure

Force has:

  1. Magnitude and Direction
  2. Velocity and Acceleration
  3. Mass and Volume
  4. Energy and Momentum

A truck has tyres of area 3 m^2. It puts a pressure of 4000 N/m^2 on the road. What is the weight of the truck? (Hint: Weight =Force):

  1. 8000 N
  2. 12000 N
  3. 16000 N
  4. 20000 N

A unit of pressure is equal to 1 newton per square meter (N/m^2) is known as:

  1. Newton
  2. Joule
  3. Pascal
  4. Kelvin

Pascal’s Principle is widely used in a:

  1. Electrical System
  2. Hydraulic System
  3. Pneumatic System
  4. Mechanical System

A branch of science that deal with practical applications of liquid in motion is called:

  1. Hydrology
  2. Pneumatic
  3. Hydraulics
  4. Hydrostatics

Which fluid is used in hydraulic power systems:

  1. Water
  2. Oil
  3. Non-compressible fluid
  4. All of these

The greater the speed of gas particles in a container, the:

  1. Lower the pressure
  2. Greater the pressure
  3. No effect on pressure
  4. Constant pressure

If the container of enclosed gas heated, what will happen inside the container:

  1. Pressure will be increased
  2. Pressure will be decreased
  3. Pressure will remain constant
  4. Volume will be increased

If an enclosed gas container with moveable piston is heated. What will happen:

  1. Volume will be decreased
  2. Volume will remain constant
  3. Volume will be increased
  4. Pressure will be increased

What is relation between Volume of a gas and Pressure:

  1. Directly Proportional
  2. Exponentially Related
  3. Not Related
  4. Inversely Proportional

Pressure increases when:

  1. Volume is increased
  2. Temperature is increased
  3. Area of contact is decreased
  4. Area of contact is increased

Pressure in gases is due to:

  1. Collision of molecules with walls of containers
  2. Vibration of molecules
  3. Rotation of molecules
  4. Electromagnetic attraction between molecules

Which of the following factor does not affect the pressure of the gas in a container:

  1. Temperature
  2. Volume
  3. Density of gas
  4. Container material

Amount of pressure of liquid increases with increase of:

  1. Depth
  2. Volume
  3. Temperature
  4. Surface tension

The study of the behaviour and applications of compressed air is called:

  1. Hydraulic Technology
  2. Pneumatic Technology
  3. Aerodynamic Technology
  4. Hydrostatic Technology

Pneumatic systems is (are) used in:

  1. Spray guns
  2. Pumps
  3. Vacuum cleaner
  4. Dental drill or dentistry tools
  5. All of these

Which one among the following is not an example of pneumatic system:

  1. Spray gun
  2. Bicycle pump
  3. Vacuum cleaner
  4. Car brake

A suspension of fine solid particles or liquid droplets, in air or another gas is called an:

  1. Pneumatic
  2. Hydraulic
  3. Aerosols
  4. None

A thick layer of air that surrounds the earth is known as:

  1. Ozone
  2. Atmosphere
  3. Stratosphere
  4. Hydrosphere

At higher altitude, the temperature and density of the air are:

  1. Lower
  2. Higher
  3. Constant
  4. Unchanged

Atmospheric pressure is calculated by the:

  1. Height of water column in a pipette
  2. Volume of gas in a cylinder
  3. Resistance in an electric circuit
  4. Height of mercury column in barometer

Atmospheric pressure acts in:

  1. Only upwards
  2. Only downwards
  3. All directions
  4. Horizonal only

A quantity that can be measured is called:

  1. Physical Quantity
  2. Physical Constant
  3. Mathematical Quantity
  4. Standard Quantity

Which of the following is not the base quantity/quantities:

  1. Length
  2. Mass
  3. Time
  4. Acceleration

The quantities that cannot be explained in terms of other quantities are known as:

  1. Derived physical quantities
  2. Mathematical quantities
  3. Fundamental physical quantities
  4. None

When a standard is set for a quantity then standard quantity is called:

  1. Unit
  2. Measurement
  3. Quantity
  4. Dimension

Which of the following units is a fundamental unit:

  1. Meter
  2. Joule
  3. Second
  4. Kelvin

The unit of time in SI system is:

  1. Second (s)
  2. Minutes (min)
  3. Hour (h)
  4. Day (d)

The unit of amount of substance in SI system is:

  1. Liter (L)
  2. Mole (mol)
  3. Gram (g)
  4. Kilogram (Kg)

The unit of luminous intensity in SI system is:

  1. Lumen (lm)
  2. Watt (W)
  3. Candela (cd)
  4. Lux (lx)

What is the correct order, in increasing size, for measurement of length:

  1. Meter, Centimetre, Millimetre
  2. Centimetre, Meter, Millimetre
  3. Meter, Millimetre, Centimetre
  4. Millimetre, Centimetre, Meter

10^-3 second is called as:

  1. Millisecond
  2. Microsecond
  3. Nanosecond
  4. Picosecond

A mass of 4 kg is equal to:

  1. 400 g
  2. 4000g
  3. 40 g
  4. 40000 g

0.05 kilometre is equal to:

  1. 5m
  2. 500m
  3. 50m
  4. 5000m

A measuring cylinder is used in a laboratories for measuring exact volume of a:

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

Increase of the size (length, area and volume) of a body due to change in temperature is called:

  1. Thermal Expansion
  2. Thermal Contraction
  3. Thermal Density
  4. Thermal Compression

Decrease of the size (length, area and volume) of a body due to change in temperature is called:

  1. Thermal Expansion
  2. Thermal Contraction
  3. Thermal Density
  4. Thermal Compression

Which does not make use of the expansion and contraction:

  1. A thermometer
  2. An electric iron
  3. A railway track
  4. An electric fan

The water has minimum density at:

  1. O°C
  2. 2°C
  3. 3°C
  4. 4°C

Rivet is used to fasten:

  1. Soft material with soft material
  2. Hard material with hard material
  3. Soft material with hard material
  4. Hard material with soft material

Bimetallic strip is used in:

  1. Electric fan
  2. Electric motor
  3. Electric iron
  4. Electric toaster

In mercury thermometer, mercury of bulb expands and rises in the tube which has linear scale:

  1. -20°F – 100°F
  2. 35°F – 105°F
  3. 100°F – 120°F
  4. 94°F – 108°F

In a mercury thermometer, what is the range of the linear scale that the mercury rises in the tube:

  1. 35°C – 42°C
  2. 20°C – 30°C
  3. 50°C – 60°C
  4. 80°C – 90°C

Which substance expands the most; for the same rise in temperature:

  1. Water
  2. Air
  3. Copper
  4. Class

An optic piece of curved transparent glass or plastic that refract the light in a specific way is called:

  1. Prism
  2. Filter
  3. Lens
  4. Mirror

The lens which refract the parallel rays of light are called:

  1. Diverging Lens
  2. Prim
  3. Cylindrical Lens
  4. Converging Lens

The lens which coverage a beam of parallel rays of light are called:

  1. Diverging lens
  2. Converging lens
  3. Cylindrical lens
  4. None

Concave lenses are also known as:

  1. Converging Lens
  2. Diverging Lens
  3. Cylindrical lens
  4. None

The point through which a ray of light passes without changing its path is the:

  1. Focal Point
  2. Principal Axis
  3. Optical Centre
  4. Centre of Curvature

A horizontal line that passes through the lens is called:

  1. Focal Point
  2. Optical Centre
  3. Centre of Curvature
  4. Principal Axis

The distance between the optical center and the principal focus is called:

  1. Focal Length
  2. Focal Point
  3. Optical Centre
  4. Centre of Curvature

The part of an eye acting as a film of camera is:

  1. Retina
  2. Iris
  3. Lens
  4. Cornea

The part of an eye acting as a diaphragm of camera is:

  1. Cornea
  2. Lens
  3. Iris
  4. Retina

The part of an eye acting as a aperture of camera is:

  1. Iris
  2. Pupil
  3. Cornea
  4. Retina

The part of an eye acting as a black point of camera is:

  1. Sclera
  2. Retina
  3. Optic disc
  4. Choroid

Which of the following helps to change the shape of the lens in the eye:

  1. Ciliary Muscles
  2. Extraocular Muscles
  3. Iris Muscles
  4. Conjunctiva Muscles

Which cells are responsible for vision in bright light and coloured vision:

  1. Rod Cells
  2. Cone Cells
  3. Bipolar Cells
  4. Ganglion Cells

Short-sightedness defect can be corrected by wearing a:

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

The blurred image is formed in front of eyes due to:

  1. Light focused in front of the retina
  2. Light focused behind the retina
  3. Light focused at a point on retina
  4. Light focused at a point beyond retina

To obtain sharp image in a camera:

  1. Lens is moved up and down
  2. Lens is moved side to side
  3. Lens is moved back and forth
  4. Lens is fixed in place

Flow of electrons is called:

  1. Electric Charge
  2. Electric Potential
  3. Electric Power
  4. Electric Current

Which part of a bicycle dynamo spins to generate electricity:

  1. Magnet
  2. Gear
  3. Axle
  4. Coils

What type of energy wind produces which is used to rotate the blades of fan of energy system:

  1. Potential energy
  2. Kinetic energy
  3. Thermal energy
  4. Electrical energy

A form of energy which can be found in the nucleus of an atom of an element:

  1. Kinetic Energy
  2. Potential Energy
  3. Nuclear Energy
  4. Chemical Energy

When animals and plants are decayed in absence of air, there produces a gas called:

  1. Natural Gas
  2. CNG
  3. LPG
  4. Biogas

Which of the following is used as a fuel to produce heat energy:

  1. Biomass Energy
  2. Solar Energy
  3. Hydro Energy
  4. Wind Energy

Which of the following is NOT a renewable energy source:

  1. Solar energy
  2. Natural gas
  3. Hydro energy
  4. Wind energy

The flow of charge that changes direction periodically is called:

  1. Electric Potential (EP)
  2. Electric Resistance (ER)
  3. Alternating Current (AC)
  4. Direct Current (DC)

The electricity we used in our homes and schools is called:

  1. Electric Potential (EP)
  2. Electric Resistance (ER)
  3. Direct Current (DC)
  4. Alternating Current (AC)

The electricity from a cell is called:

  1. Direct Current (DC)
  2. Alternating Current (AC)
  3. Electric Potential (EP)
  4. Electric Resistance (ER)

The unit of electric resistance is:

  1. Volts (V)
  2. Ohms (Ω)
  3. Amps (A)
  4. Watts (W)

IC stands for:

  1. Insulated Cable
  2. Intelligent Chip
  3. Integrated Circuit
  4. Internal Component

Silicon is an example of:

  1. Conductor
  2. Insulator
  3. Resistor
  4. Semiconductor

Sputnik-1 was the first manmade spacecraft, which was launched on October 4, 1957 by the:

  1. Soviet Union
  2. United States of America
  3. China
  4. Great Britain

How many lenses are present in refracting telescope:

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

A Refracting telescope consists of:

  1. A primary mirror and A secondary mirror
  2. A primary lens and A secondary lens
  3. A primary lens and A secondary mirror
  4. A primary mirror and A secondary lens

A Reflecting telescope consists of:

  1. A primary lens and A secondary lens
  2. A primary lens and A secondary mirror
  3. A primary and A secondary mirror
  4. A primary mirror and A secondary lens

An optical instrument used to measure the properties of visible light is called:

  1. Spectroscope
  2. Telescope
  3. Microscope
  4. Binoculars

The set of colours obtained in seven different colours components way is called:

  1. Rainbow
  2. Spectrum of Light
  3. Dispersion
  4. Prism

Which colour has largest wavelength in the spectrum of white light:

  1. Violet
  2. Green
  3. Red
  4. Blue

Which colour has smallest wavelength in the spectrum of white light:

  1. Red
  2. Blue
  3. Yellow
  4. Violet

A Spectroscope is used to:

  1. Measure the distance of a star from Earth
  2. Identify the chemical elements present in a star
  3. Determine the temperature of a star
  4. Calculate the velocity of a star

A man-made object developed to accomplish a certain task in space:

  1. Spacecraft
  2. Space Station
  3. Satellite
  4. Telescope

Which among the following is manned spacecraft that took the humans to the moon:

  1. Apollo-15
  2. Apollo-16
  3. Apollo-17
  4. Apollo-18

Venera-9 was the first spacecraft landed on the surface of:

  1. Jupiter
  2. Mercury
  3. Neptune
  4. Venus

MRI or CT scan resulted from the image exploration of:

  1. Moon
  2. Saturn
  3. Jupiter
  4. Sun

A scientific method which monitors the movement of vehicles, ships and aircrafts is known as:

  1. Global Navigation Satellite System (GNSS)
  2. Global Positioning System (GPS)
  3. Geographic Information System (GIS)
  4. Geophysical Positioning System (GPS)

A Global Positioning System (GPS) comprises how many satellites:

  1. More than 10
  2. More than 20
  3. More than 30
  4. More than 40

The distance between two crests or troughs of a wave is called:

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

Which of the following gas mainly responsible for ozone layer depletion:

  1. Chlorofluorocarbon
  2. CO2
  3. Nitrogen oxide
  4. Sulphur dioxide

The reaction which releases or gives off heat is called:

  1. Exothermic Reaction
  2. Endothermic Reaction
  3. Oxidation Reaction
  4. Neutralization Reaction

The chemical formula of ozone gas is:

  1. O2
  2. NO2
  3. O3
  4. CO2

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

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