General Science-Sample Test

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1. The hardest form of carbon is

2. The main active constituent of tea and coffee is

3. The most extensive, commercially useful source of thorium as monazite sand occurs in India at

4. The metal does not give H2 on treatment with dilute HCL is

5. The gas used for artificial ripening of green fruit is

6. The method that cannot be used for removing permanent hardness of water is

7. The main chemical constituent of clay is

8. The major constituent of air is

9. The iron ore magnetite consists of

10. The mass number of a nucleus is

11. Which of the following is used in beauty parlours for hair setting?

12. Gobar gas contains mainly :

13. Match the following :
A. Aluminium 1. Monazite
B. Uranium 2. Pith blende
C. Thorium 3. Bauxite
D. Lead 4. Galena
5. Haematite
Below options are given in A B C D order.

14. An alloy used in making heating elements for electric heating devices is :

15. Galvanised iron sheets have a coating of :

16. Large astronomical telescopes always use as objective

17. RADAR is used for

18. On a rainy day, small oil films on water show brilliant colours. This is due to

19. Lux is the SI unit of

20. Rectifiers are used to convert

21. Pick out the scalar quantity

22. A person stands at the middle point of a wooden ladder which starts slipping between a vertical wall and the floor of a room, while continuing to remain in a vertical plane. The path traced by a person standing at the middle point of the slipping ladder is :

23. Consider the following statements with reference to X-rays :
1. They produce heat when absorbed by matter
2. They are generated when fast moving electrons strike a metal target
3. They can penetrate through a thin sheet of aluminium
Which of the statements given above are correct ?

24. Consider the following statements:
1. Atom bomb is based upon the principle of uncontrolled nuclear fusion
2. Hydrogen bomb is based upon the principle of uncontrolled nuclear fission
3. Nuclear reactor is based upon the principle of controlled nuclear fission
Which of the statements given above is/are correct?

25. The best conductor of electricity is :

26. If earth were 3 times as far from the sun as it is now, how would the gravitational attraction compare with its present value?

27. Two cars, passing each other at high speed, are in danger of side swiping because :

28. What is the correct ascending order for frequencies of the following
1. Visible 2. X-rays 3. Ultraviolet 4. Radio Waves

29. Nuclear fission is caused by the impact of :

30. What is the wavelength of visible spectrum?