TNPSC Chemistry Model Question Paper in Tamil and English - 3

Question: 11

Which of the following is a/an non ferrous metal?

(A) Iron

(B) Aluminium

(C) Cobalt

(D) Nickel

Question: 12

The ore of iron is

(A) Anglesite

(B) Bauxite

(C) Dolomite

(D) Magnetite

Question: 13

Silver ware turns black after a period of time due to formation of

(A) oxide coating on silver

(B) nitrate coating on silver

(C) sulphide coating on silver

(D) chloride coating on silver

Question: 14

The gases used in the respiratory activities of sailors (drivers) are

(A) oxygen and argon

(B) oxygen and neon

(C) oxygen and helium

(D) oxygen and nitrogen

Question: 15

Nail polish remover contains

(A) benzene

(B) acetic acid

(C) acetone

(D) petroleum ether