GK - General Science Quiz 6

1. What are elements containing the same number of protons but different number of neutrons called?

a) isotopes
b) isobars
c) compounds
d) allotropes

2. Which of the following is not an air pollutant?

a) sulphur dioxide
b) carbon dioxide
c) hydrocarbons
d) nitrous oxide

3. Which of the following is the only liquid metal?

a) hydrogen
b) chlorine
c) mercury
d) water

4. Which of the following acids is most important in building tissue proteins?

a) linoleic
b) amino
c) lactic
d) saturated fatty

5. Nameplates made of brass get discolured in air because of the presence of which of the following gases in the air?

a) oxygen
b) nitrogen
c) carbon dioxide
d) hydrogen sulphide

6. Which one of the following nitrogenous fertilizers is not very effective in acidic soils?

a) ammonium sulphate
b) urea
c) nitrolin
d) calcium nitrate

7. What is the correct increasing order of abundance of the main components of air?

a) oxygen, nitrogen and argon
b) argon, oxygen and nitrogen
c) nitrogen, argon and oxygen
d) nitrogen, oxygen and argon

8. Diamond and graphite are similar in

a) crystal structure
b) density
c) electrical conductivity
d) atomic weight

9. High alumina cement can be prepared by heating a mixture of bauxite and

a) tricalcium aluminate
b) dicalcium silicate
c) limestone
d) gypsum

10. Which of the following is the most toxic gas?

b) carbon dioxide
b) carbon monoxide
c) nitrogen
d) hydrogen

Answers

1. isotopes
2. nitrous oxide
3. mercury
4. amino
5. hydrogen sulphide
6. urea
7. argon, oxygen and nitrogen
8. atomic weight
9. dicalcium silicate
10. carbon monoxide