Top 500+ Chemistry General Knowledge Questions and Answers - 2

Question: 6

Which one of the following is the softest?

(A) Aluminium

(B) Iron

(C) Lithium

(D) Sodium

Question: 7

Salts of which of the following elements provide colours to fireworks?

(A) Chromium and nickel

(B) Strontiurn and barium

(C) Potassium and mercury

(D) Zinc and sulphur

Question: 8

In which type of rocks are metals like Gold and Copper mostly found?

(A) New metamorphic

(B) Old metamorphic

(C) Old sedimentary

(D) Old igneous

Question: 9

In coloured galss. the purple colour is imparted by

(A) Manganese oxide

(B) Cadmium sulphide

(C) Ferric oxide

(D) Selenium sulphide

Question: 10

The vinegar is a solution of

(A) 5% acetic acid in water

(B) 10% acetic acid in water

(C) 15% acetic acid in water

(D) 50% acetic acid in water