TNPSC Group 2a Study Material in Tamil and English Pdf - 2

Question: 6

Which of the following alloys contains Cu and Zn?

(A) Brass

(B) Bronze

(C) Bell metals

(D) Aluminium bronze

Question: 7

Which of the following is used in synthetic lemonade?

(A) Tartaric acid

(B) Acetic acid

(C) Oxalix acid

(D) Citric acid

Question: 8

The inert form of carbon is

(A) Diamond

(B) Graphite

(C) Coal

(D) Charcoal

Question: 9

The element that has the highest first ionization potential is

(A) Boron

(B) Carbon

(C) Nitrogen

(D) Oxygen

Question: 10

Heating of pyrites in air to remove sulphur is known as

(A) Fluxing

(B) Smelting

(C) Calcination

(D) Roasting