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- Question 1 of 50
1. Question
A person can jump higher on the Moon’s surface than on the Earth because
- Question 2 of 50
2. Question
The purpose of choke in a fluorescent lamp is
- Question 3 of 50
3. Question
The apparent weight of a man in a lift is less than the real weight when
- Question 4 of 50
4. Question
Rainbows are produced when sunlight
- Question 5 of 50
5. Question
The velocity of sound in moist air is more than in dry air because the moist air has
- Question 6 of 50
6. Question
The least penetrating power ray is
- Question 7 of 50
7. Question
X-rays can be used
- Question 8 of 50
8. Question
Ice is packed in saw dust because
- Question 9 of 50
9. Question
It is easy to burst a gas-filled balloon with a needle than with a nail. It is because
- Question 10 of 50
10. Question
Electric current is measured using which of the following instrument?
- Question 11 of 50
11. Question
The dynamo converts
- Question 12 of 50
12. Question
A fuse wire is characterized by
- Question 13 of 50
13. Question
For a missile launched with a velocity, less than the Earth’s escape velocity, the total energy is
- Question 14 of 50
14. Question
Cyanide poisoning causes death in seconds because
- Question 15 of 50
15. Question
When one gene pair hides the effect of the other unit. The phenomenon is referred to as
- Question 16 of 50
16. Question
To an astronaut in space the sky will appear to be
- Question 17 of 50
17. Question
On a rainy day, small oily films on water show brilliant colours. This is due to
- Question 18 of 50
18. Question
Rainbow formation is due to
- Question 19 of 50
19. Question
The total energy of an electron inside an atom is
- Question 20 of 50
20. Question
The velocity of light is
- Question 21 of 50
21. Question
A seconds pendulum is a pendulum whose time period is
- Question 22 of 50
22. Question
A jug is filled to the brim with water at 0°C. A piece of ice floats in it. The moment the ice melts:
- Question 23 of 50
23. Question
Herman Hollerith had perfected his tabulating system and developed a machine called
- Question 24 of 50
24. Question
Absorption of water from cut ends of stems disproves the
- Question 25 of 50
25. Question
The loss of water in the form of water droplets is called
- Question 26 of 50
26. Question
The metal used for making aircrafts and rickets is
- Question 27 of 50
27. Question
The colours of stars depend on their
- Question 28 of 50
28. Question
Radar is used to
- Question 29 of 50
29. Question
Optical fibre works on the principle of
- Question 30 of 50
30. Question
Radio Carbon Dating is used to estimate the age of
- Question 31 of 50
31. Question
A satellite in vacuum
- Question 32 of 50
32. Question
Communication satellites are used to
- Question 33 of 50
33. Question
‘Farad’ is the unit of
- Question 34 of 50
34. Question
Steel is more elastic than rubber because it
- Question 35 of 50
35. Question
On the Moon, an astronaut cannot drink lemonade with the help of straw because
- Question 36 of 50
36. Question
A particle moving with uniform speed
- Question 37 of 50
37. Question
Device which uses sound waves for detection and ranging is called
- Question 38 of 50
38. Question
Earth is a very big magnet. In which direction does its magnetic field extend?
- Question 39 of 50
39. Question
Which colour/colour of light has the highest velocity through vacuum?
- Question 40 of 50
40. Question
What type of minor is used in a view finding mirror of a vehicle?
- Question 41 of 50
41. Question
We receive sunlight on earth surface. What type of light beams are these?
- Question 42 of 50
42. Question
‘Shock-absorbers’ are usually made of steel as it
- Question 43 of 50
43. Question
The time period of a pendulum when taken to the Moon would
- Question 44 of 50
44. Question
The atmospheric air is held to the Earth by
- Question 45 of 50
45. Question
The function of ball bearings in a wheel is
- Question 46 of 50
46. Question
Lambert’s law is related to
- Question 47 of 50
47. Question
A geostationary satellite revolves around the Earth from
- Question 48 of 50
48. Question
Among the following materials sound travels fastest in
- Question 49 of 50
49. Question
Which phenomenon do bats or dolphins use to find prey, predators or obstacles?
- Question 50 of 50
50. Question
What did the first electronic digital computer contain?