Time limit: 0
Finish Test
0 of 50 questions completed
Questions:
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
- 11
- 12
- 13
- 14
- 15
- 16
- 17
- 18
- 19
- 20
- 21
- 22
- 23
- 24
- 25
- 26
- 27
- 28
- 29
- 30
- 31
- 32
- 33
- 34
- 35
- 36
- 37
- 38
- 39
- 40
- 41
- 42
- 43
- 44
- 45
- 46
- 47
- 48
- 49
- 50
Information
- Science and Tech-Chemistry Important Questions
- Free Online Test with Answers
- Very useful for all Competitive Exams
You have already completed the quiz before. Hence you can not start it again.
Test is loading...
You must sign in or sign up to start the quiz.
You have to finish following quiz, to start this quiz:
Results
0 of 50 questions answered correctly
Time has elapsed
You have reached 0 of 0 points, (0)
Categories
- Not categorized 0%
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
- 11
- 12
- 13
- 14
- 15
- 16
- 17
- 18
- 19
- 20
- 21
- 22
- 23
- 24
- 25
- 26
- 27
- 28
- 29
- 30
- 31
- 32
- 33
- 34
- 35
- 36
- 37
- 38
- 39
- 40
- 41
- 42
- 43
- 44
- 45
- 46
- 47
- 48
- 49
- 50
- Answered
- Review
- Question 1 of 50
1. Question
Catalytic converters are generally made from
- Question 2 of 50
2. Question
The soft silvery metallic element which ionizes easily when heated or exposed to light and is present in atomic clocks is
- Question 3 of 50
3. Question
The mercury and sodium street lamps light up because of
- Question 4 of 50
4. Question
The green colour seen in firework displays is due to the chloride salt of
- Question 5 of 50
5. Question
Most commonly used bleaching agent is
- Question 6 of 50
6. Question
Peroxyacetyl nitrate is a
- Question 7 of 50
7. Question
Hydrogen peroxide is an effective sterilizing agent. Which one of the following product results when it readily loses active oxygen?
- Question 8 of 50
8. Question
What happens when a drop of glycerol is added to crushed KMnO₄ spread on a paper?
- Question 9 of 50
9. Question
Which of the following can be found as pollutants in the drinking water in some parts of India?
1. Arsenic, 2. Sorbitol, 3. Fluoride, 4. Formaldehyde, 5. Uranium
Select the correct answer using the code given below. - Question 10 of 50
10. Question
Photo chemical smog is a resultant of the reaction among
- Question 11 of 50
11. Question
When a helium atom loses an electron it becomes
- Question 12 of 50
12. Question
Heavy metals got their name because compared to other atoms they have
- Question 13 of 50
13. Question
The purest form of Iron is:
- Question 14 of 50
14. Question
Combustion is a
- Question 15 of 50
15. Question
Which of the following is not a form of carbon?
- Question 16 of 50
16. Question
Natural radioactivity was discovered by
- Question 17 of 50
17. Question
Which of the following is used in pencils?
- Question 18 of 50
18. Question
The rusting of metal iron in air needs both
- Question 19 of 50
19. Question
Acid rain is caused by
- Question 20 of 50
20. Question
The process of improving the quality of rubber by heating it with sulphur is called
- Question 21 of 50
21. Question
The pollutant responsible for ozone holes is
- Question 22 of 50
22. Question
The alkaloid naturally found in coffee, cocoa and cola nut is
- Question 23 of 50
23. Question
Which of the following is not a noble gas?
- Question 24 of 50
24. Question
Kelp is
- Question 25 of 50
25. Question
Ink is prepared from
- Question 26 of 50
26. Question
Formic acid is produced by
- Question 27 of 50
27. Question
Chemical decomposition of an organic compound by water is called as
- Question 28 of 50
28. Question
Which of the following is not a nitrogenous fertilizer?
- Question 29 of 50
29. Question
CaC₂ on treatment with water gives
- Question 30 of 50
30. Question
The percentage of nitrogen present in ammonium sulphate is
- Question 31 of 50
31. Question
Stains of rust on clothes can be removed by
- Question 32 of 50
32. Question
Ethanol containing 5% water is known as
- Question 33 of 50
33. Question
Transboundary pollution (or) Acid rain is caused by
- Question 34 of 50
34. Question
The natural disaster in which carbon dioxide suddenly erupts from a deep lake water is known as
- Question 35 of 50
35. Question
Dry Ice is nothing but
- Question 36 of 50
36. Question
Which one of the following is obtained as slag in a blast furnace?
- Question 37 of 50
37. Question
When H₂ gas is allowed to expand from a region of high pressure to a region of low pressure the temperature of the gas
- Question 38 of 50
38. Question
In the industrial production of vegetable ghee, the process involved is
- Question 39 of 50
39. Question
Which of the following weeds has been found useful to check water pollution caused by industrial affluents?
- Question 40 of 50
40. Question
Pyroligneous acid obtained from wood contains
- Question 41 of 50
41. Question
Which of the following pairs is correctly matched?
- Question 42 of 50
42. Question
Which is not a correct statement?
- Question 43 of 50
43. Question
Which of the following could be used as fuel in propellant or rockets?
- Question 44 of 50
44. Question
The addition of gypsum to portland cement helps in
- Question 45 of 50
45. Question
The Refrigerant ‘FREON’ is
- Question 46 of 50
46. Question
Hard steel contains
- Question 47 of 50
47. Question
Cement is formed by strongly heating a mixture of
- Question 48 of 50
48. Question
Glass is a
- Question 49 of 50
49. Question
The temperature of oxy-acetylene flame is around
- Question 50 of 50
50. Question
The gas that is used in the manufacture of vanaspati ghee is