Top 500+ TNPSC Group 4 Chemistry Questions and Answers - 5

Question: 21

Metals are usually heavy. A light metal is

(A) Potassium

(B) Iron

(C) Manganese

(D) Copper

Question: 22

Radioactive disintegration of uranium ultimately results in formation of

(A) Polonium

(B) Selenium

(C) Radium

(D) Lead

Question: 23

For which one of the following is the density maximum?

(A) Ice

(B) Benzene

(C) Water

(D) Chloroform

Question: 24

Which one of the following pairs is correctly matched?

(A) Zinc sulphide : Philosopher’s wool

(B) Zinc phosphide : Rat poison

(C) Silver chloride : Artificial rain

(D) Silver iodide : Horn Silver

Question: 25

Blood has been formed isotonic with

(A) Normal sodium chloride solution

(B) Saturated solution of NaCl

(C) Saturated solution of 1.1 mixture of NaCl and KCl

(D) Saturated solution of KCl