Basic Science MCQs PDF
1. Water is heated in a kettle. The inside water is heated by convection. A person sitting near the fire receives heat by :a) Conduction
b) Convection
c) Radiation
d) Reflection
e) None of these2. A time can come when we will be able to design a machine which can go on working for ever without the expenditure of energy. Is it possible ?a) No
b) Yes
c) In due course time
d) Very soon
e) None of these3. The measurement of rainfall is made by an instrument known as :a) Hydrometer
b) Barometer
c) Hygrometer
d) Pedometer
e) None of these4. Light year is a unit of :a) Distance
b) Time Period
c) Light intensity
d) Time
e) none of these5. Three elements needed for the healthy growth of plants are :a) N,P,K
b) N,C,P
c) N,K,C
d) N,S,P
e) none of these6.Copper can be converted into gold by :a) Heating
b) Artificial Radioactivity
c) Electroplating
d) Chemical reaction
e) None of these7. In winter an iron pipe feel colder than a wooden window . This is because wood is :a) Conductor
b) non-Conductor
c) Semi- Conductor
d) Not a solid while iron is a solid
e) None of these8. The echo (reflected sound) will be distinctly heard only at ordinary temperatures if the distance of the reflecting surfaces from the source of sound is at least :a) 1120 ft
b) 120 ft
c) 56fft
d) 100 ft
e) None of these9. It is possible to recognize a person in the dark by simply hearing his unique voice . It is because of the:a) pitch
b) Frequency
c) Time period
d) Quality
e) None of these10. When a ray of sunlight enters a dark room , its straight path become visible because of dust particles hanging in the air. It is because light is :a) Visible
B) Transparent
c) Invisible
d) opaque
e) None of these11. A six feet tall lady wants to see her full image in a plane mirror . The minimum length of the mirror will be :a) 6 feet
b) 12 feet
c) 4 feet
d) 3 feet
e) None of these12. The principle used in radar is the same as that of Sonar. In radar we use radio waves ; whereas in sonar we use :A) red waves
b) Infrared waves
c) Ultrasonic
d) super sonic
e) None of these13. In a fission nuclear reaction , a heavy nucleus breaks up into smaller nuclei whereas in another nuclear reaction two or more than two possibly nuclei are fused to form a heavy nucleus This nuclear reaction is called :a) Chemical Reaction
b) Nuclear reaction
c) Fission nuclear reaction
d) Fusion nuclear reaction
e) None of these14. Parsec is a unit of :a) Energy
b) Time
c) Power
d) Distance
e) None of these15. German Silver is an alloy of:A) Zn + Ni
b) Cu + Zn
c) Cu + Ni
d) Cu + Sn
e) None of these16. The Continent Antarctica lies at the: a) North pole
b) South pole
c) middle of the earth
d) Equator
e) None of these17. The temperature of the dead body is:a) 0 ‘C
b) 37 ‘
c) room temperature
d) temperature of the place where it is kept
e) None of these18. Lactometer is a type of Hydrometer which is used to measure the specific gravity of :a) Honey
b) Water
c) Milk
d) olive oil
e) None of these19. Cusec is a unit of :a) Area
b) Time
c) Distance
d) mass
e) None of these20. The deepest place on earth is :a) Trench
b) Mariana Trench
C) Mangrove
d) Groove
e) None of these21. Twinkling of stars is caused by :a) Reflection of light
b) Polarization of light
c) refraction of light
d) Interference of light
e) None of these22. Magnifying power of a simple microscope can be increased by : a) increasing focal length of the lens
b) Decreasing focal length of the lens
c) Lens of large aperture
d) lens of short aperture
e) None of these 23. Bronze medal is made up of metal :a) Copper , Zinc
b) Copper , Nickle
c) Copper , Tin
d) Sopper , Silver24. One of the countries through which equator passes is :a) Kenya
B) Pakistan
c) Malaysia
d) Malta
e) None of these25. A very important practical application of properties of matter is hoeing or “godi” practiced by the farmers. This property of matter is called :a) Elasticity
b) Stress
c) Capillarity
d) Strain
e) None of these
b) Convection
c) Radiation
d) Reflection
e) None of these2. A time can come when we will be able to design a machine which can go on working for ever without the expenditure of energy. Is it possible ?a) No
b) Yes
c) In due course time
d) Very soon
e) None of these3. The measurement of rainfall is made by an instrument known as :a) Hydrometer
b) Barometer
c) Hygrometer
d) Pedometer
e) None of these4. Light year is a unit of :a) Distance
b) Time Period
c) Light intensity
d) Time
e) none of these5. Three elements needed for the healthy growth of plants are :a) N,P,K
b) N,C,P
c) N,K,C
d) N,S,P
e) none of these6.Copper can be converted into gold by :a) Heating
b) Artificial Radioactivity
c) Electroplating
d) Chemical reaction
e) None of these7. In winter an iron pipe feel colder than a wooden window . This is because wood is :a) Conductor
b) non-Conductor
c) Semi- Conductor
d) Not a solid while iron is a solid
e) None of these8. The echo (reflected sound) will be distinctly heard only at ordinary temperatures if the distance of the reflecting surfaces from the source of sound is at least :a) 1120 ft
b) 120 ft
c) 56fft
d) 100 ft
e) None of these9. It is possible to recognize a person in the dark by simply hearing his unique voice . It is because of the:a) pitch
b) Frequency
c) Time period
d) Quality
e) None of these10. When a ray of sunlight enters a dark room , its straight path become visible because of dust particles hanging in the air. It is because light is :a) Visible
B) Transparent
c) Invisible
d) opaque
e) None of these11. A six feet tall lady wants to see her full image in a plane mirror . The minimum length of the mirror will be :a) 6 feet
b) 12 feet
c) 4 feet
d) 3 feet
e) None of these12. The principle used in radar is the same as that of Sonar. In radar we use radio waves ; whereas in sonar we use :A) red waves
b) Infrared waves
c) Ultrasonic
d) super sonic
e) None of these13. In a fission nuclear reaction , a heavy nucleus breaks up into smaller nuclei whereas in another nuclear reaction two or more than two possibly nuclei are fused to form a heavy nucleus This nuclear reaction is called :a) Chemical Reaction
b) Nuclear reaction
c) Fission nuclear reaction
d) Fusion nuclear reaction
e) None of these14. Parsec is a unit of :a) Energy
b) Time
c) Power
d) Distance
e) None of these15. German Silver is an alloy of:A) Zn + Ni
b) Cu + Zn
c) Cu + Ni
d) Cu + Sn
e) None of these16. The Continent Antarctica lies at the: a) North pole
b) South pole
c) middle of the earth
d) Equator
e) None of these17. The temperature of the dead body is:a) 0 ‘C
b) 37 ‘
c) room temperature
d) temperature of the place where it is kept
e) None of these18. Lactometer is a type of Hydrometer which is used to measure the specific gravity of :a) Honey
b) Water
c) Milk
d) olive oil
e) None of these19. Cusec is a unit of :a) Area
b) Time
c) Distance
d) mass
e) None of these20. The deepest place on earth is :a) Trench
b) Mariana Trench
C) Mangrove
d) Groove
e) None of these21. Twinkling of stars is caused by :a) Reflection of light
b) Polarization of light
c) refraction of light
d) Interference of light
e) None of these22. Magnifying power of a simple microscope can be increased by : a) increasing focal length of the lens
b) Decreasing focal length of the lens
c) Lens of large aperture
d) lens of short aperture
e) None of these 23. Bronze medal is made up of metal :a) Copper , Zinc
b) Copper , Nickle
c) Copper , Tin
d) Sopper , Silver24. One of the countries through which equator passes is :a) Kenya
B) Pakistan
c) Malaysia
d) Malta
e) None of these25. A very important practical application of properties of matter is hoeing or “godi” practiced by the farmers. This property of matter is called :a) Elasticity
b) Stress
c) Capillarity
d) Strain
e) None of these