General knowledge about Chemistry. Learn Chemistry MCQs Perfect for competitive exams and general awareness.
Q1. Who discovered radioactivity?
(a) Rutherford
(b) Becquerel
(c) Bohr
(d) Madam Curie
(b) Becquerel
Q2. Conversion of water into vapour is called-
(a) natural
(b) physical
(c) chemical
(d) biological
(b) physical
Q3. The most abundant element in the earth’s crust is –
(a) oxygen
(b) nitrogen
(c) manganese
(d) silicon
(a) oxygen
Q4. Bauxite ore is to extract the following metal from –
(a) iron
(b) copper
(c) aluminium
(d) silver
(c) aluminium
Q5. Which of the following metals do not form amalgams?
(a) zinc
(b) copper
(c) magnesium
(d) Iron
(d) Iron
Q6. Which of the following catalysts is used in the hydrogenation of vegetable oils?
(a) zinc
(b) platinum
(c) nickel
(d) iron
(c) nickel
Q7. Which chemical compound is present in bleaching powder?
(a) Calcium hydroxide
(b) Calcium oxichloride
(c) Calcium carbonate
(d) Ammonium chloride
(b) Calcium oxichloride
Q8. The toxic substance in the hooch tragedies that cause blindness etc. is-
(a) ethyl alcohol
(b) amyl alcohol
(c) benzyl alcohol
(d) methyl alcohol
(d) methyl alcohol
Q9. C.N.G. is-
(a) Compressed Natural Gas
(b) Cynogen Natural Gas
(c) Condensed Nitrogen Gas
(d) Controlled Natural Gas
(a) Compressed Natural Gas
Q10. In which form is cooking gas filled in cylinders supplied?
(a) as liquid
(b) as gas
(c) as solid
(d) as solution
(a) as liquid