G.K. Practice Test: Question Set - 05
1. Mach number is used in connection with the speed of
- (A) Sound
- (B) Aircraft
- (C) Spacecraft
- (D) Ships
2. Stars which appear single to the naked eye but are double when seen through a telescope are
- (A) Novas
and supernovas
- (B) Binaries
- (C) Asteroids
- (D) Quasars
3. Solar eclipse will take place when
- (A) The
sun is between the moon and the earth
- (B) The
earth is between the moon and the sun
- (C) The
moon is between the sun and the earth
- (D) The
moon does not lie on the line joining the sun and the earth
4. In which of the following industries is mica as a raw material?
- (A) Cement
- (B) Glass
and Pottery
- (C) Iron and
Steel
- (D) Electrical
5. Radiocarbon dating technique is used to estimate the age of
- (A) Rocks
- (B) Monuments
- (C) Soil
- (D) Fossils
6. Natural radioactivity was discovered by
- (A) Marie Curie
- (B) Ernest
Rutherford
- (C) Henri
Becquerel
- (D) Enrico Fermi
7. Mica is used in electrical appliances such as electric iron because mica is
- (A) A good
conductor of heat but a bad conductor of electricity
- (B) A
bad conductor of heat but a good conductor of electricity
- (C) A
good conductor of heat as well as electricity
- (D) A
bad conductor of heat as well as electricity
8. The 'pulse' of the aquatic environment can be ascertained by measuring
- (A) Nitrogen
- (B) Oxygen
- (C) Alkalinity
- (D) Conductivity
9. What is the function of a dynamo?
- (A) To convert
heat energy into light energy
- (B) To convert
light energy into heat energy
- (C) To
convert mechanical energy into electrical energy
- (D) To
convert electrical energy into mechanical energy
10. To produce sound it is necessary that
- (A) The
source should execute longitudinal vibrations
- (B) The
source should execute transverse vibrations
- (C) The
source may execute any type of vibrations
- (D) The
vibrations of source are not necessary
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