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General Science Online Test Preparations Solved MCQs
1. Erythrocytes are also called as:White blood cell
Red blood cells
Platelets
None of these
2. German silver is an alloy of:
Cu + Zn
None of these
Cu + Ni
Zn + Ni
3. 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?
Yes
In due course time
No
Very soon
4. Cusec is a unit of
Area
None of these
Distance
Time
5. Twinkling of stars is caused by:
Reflection of light
Polarization of light
Refraction of light
None of these
6. It is possible to recognize a person in the dark by simply hearing his unique voice. It is because of the
Quality
Frequency
Time period
Pitch
7. The Continent Antarctica lies at the
North Pole
Middle of the earth
South Pole
Equator
8. Parsec is a unit of
Distance
Power
Energy
Time
9. The temperature of the dead body is:
0 ’C
37’
Room temperature
None of these
10. Water is heated in a kettle. The inside water is heated by convection. A person sitting near the fire receive heat by:
Conduction
None of these
Convection
Radiation
11. Light year is a unit of
Time period
Distance
Time
Light intensity
12. In a fission nuclear reaction a heavy nucleus breaks up into smaller nuclei whereas in another nuclear reaction two or more than two possible nuclei are fused to form a heavy nucleus. This nuclear reaction is called:
Nuclear reaction
Fusion nuclear reaction
Chemical Reaction
Fission nuclear reaction
13. The deepest place on earth is
Mangrove
Trench
Mariana Trench
None of these
14. The measurement of rainfall is made by an instrument known as
Barometer
Pedometer
None of these
Hydrometer
15. Three elements needed for the healthy of plants are:
None of these
N,C,P
N,K,C
N,P,K
16. 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:
Opaque
Transparent
Visible
Invisible
17. The principle used in radar is the same as that of Sonar. In radar we use radio waves; whereas in sonar we use:
Ultrasonic
None of these
Red waves
Infrared waves
18. A six feet tall lady wants to see her full image in a plane mirror. The minimum length of the mirror will be:
12 ft
3 ft
6 ft
4 ft
19. 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:
100 ft
56 ft
120 ft
1120 ft
20. Lactometer is a type of Hydrometer which is used to measure the specific gravity of?
None of these
Milk
Water
Honey
