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- Answered
- Review
- Question 1 of 50
1. Question
Which gas is used as fire extinguisher?
- Question 2 of 50
2. Question
Which one of the following is extensively used for sterilizing water?
- Question 3 of 50
3. Question
Which mixture of gases is mainly stored as a liquid under pressure in LPG cylinder?
- Question 4 of 50
4. Question
The major constituent of air is
- Question 5 of 50
5. Question
Which of the following organisms is most likely to produce greenhouse gases such as nitrous oxide and methane?
- Question 6 of 50
6. Question
Rusting of iron takes place due to
- Question 7 of 50
7. Question
The highest grade and best equality coal is
- Question 8 of 50
8. Question
German silver used for making utensils is an alloy of
- Question 9 of 50
9. Question
The purity of gold is expressed in carats. The purest form of gold is
- Question 10 of 50
10. Question
Petroleum consists of a mixture of
- Question 11 of 50
11. Question
The lustre of the metals is because of
- Question 12 of 50
12. Question
One of the following is used to dissolve noble metals. That is
- Question 13 of 50
13. Question
An emulsion is a colloid of a
- Question 14 of 50
14. Question
Percentage of carbon in steel ranges from
- Question 15 of 50
15. Question
Which of the following is not present in German-silver?
- Question 16 of 50
16. Question
The major harmful gas emitted by automobile vehicles which causes air pollution is
- Question 17 of 50
17. Question
Which one of the following is a major green house gas?
- Question 18 of 50
18. Question
The chemical name of ‘Common salt’ is
- Question 19 of 50
19. Question
Denatured spirit is ethanol mixed with
- Question 20 of 50
20. Question
The metal, which is a constituent of vitamin B₁₂ is
- Question 21 of 50
21. Question
The most abundant inert gas in the atmosphere is
- Question 22 of 50
22. Question
Which metal is extracted from seawater?
- Question 23 of 50
23. Question
Percentage of lead in lead pencils is
- Question 24 of 50
24. Question
Helium has is used in gas balloons instead of hydrogen gas because it is
- Question 25 of 50
25. Question
The gas used in the artificial ripening of fruits is
- Question 26 of 50
26. Question
Ruby and sapphire are oxides of
- Question 27 of 50
27. Question
The gas which turns into liquid at the lowest temperature among the following is
- Question 28 of 50
28. Question
Gunpowder consists of a mixture of
- Question 29 of 50
29. Question
Which of the following is the sweetest sugar?
- Question 30 of 50
30. Question
In nuclear reactors, graphite is used as a/an
- Question 31 of 50
31. Question
The process involved involved in making soap is
- Question 32 of 50
32. Question
Sea water can be purified by the process of
- Question 33 of 50
33. Question
The compound to which H₂ does not add is
- Question 34 of 50
34. Question
Ammonal is a mixture of
- Question 35 of 50
35. Question
Which gas does not form the part of atmosphere?
- Question 36 of 50
36. Question
The fuel used in an atomic reactor is
- Question 37 of 50
37. Question
The major constituent of gobar gas is
- Question 38 of 50
38. Question
The isotope of Uranium used in atomic reactors is
- Question 39 of 50
39. Question
Which one of the following is not a radio-active element?
- Question 40 of 50
40. Question
The greenhouse effect is caused by the higher level of which gas in the atmosphere?
- Question 41 of 50
41. Question
Candle is a mixture of
- Question 42 of 50
42. Question
Ethanol containing 5% water is known as
- Question 43 of 50
43. Question
Brass is an alloy of copper and
- Question 44 of 50
44. Question
The density of a gas is maximum at
- Question 45 of 50
45. Question
The important ore of aluminium is
- Question 46 of 50
46. Question
Aqua regia is a 1 : 3 mixture, by volume, of
- Question 47 of 50
47. Question
What is the maximum Water Vapour content in the atmosphere?
- Question 48 of 50
48. Question
The amount of chlorine available in water after disinfection is called as
- Question 49 of 50
49. Question
What are the major pollutants of cigarette smoke?
- Question 50 of 50
50. Question
Zinc sulphide is commonly used as