Chemistry Questions and Answers Pdf - 2

Question: 6

H₂O is liquid and H₂ S is a gas because

(A) Atomic radius of oxygen is greater than that of sulphur

(B) Atomic radius of oxygen is greater than that of sulphur

(C) Oxygen radius of oxygen is less than that of sulphur

(D) Oxygen forms stronger hydrogen level than sulphur

Question: 7

What happened when a hard boiled egg after shelling is immersed in saturated brine?

(A) It initially grows in size and then shrinks

(B) It shrinks

(C) It grows in size

(D) Its size remains unchanged

Question: 8

From which mineral is radium obtained

(A) Pitchblende

(B) Rutile

(C) Limestone

(D) Haematitie

Question: 9

Sodium stearate is a salt and is used

(A) To make soap

(B) To make fertilizer

(C) In Paint

(D) In gunpowder

Question: 10

The inexhaustible source of energy of the stars is due to

(A) Excess of oxygen that helps burning and release of energy

(B) Decay of radioactive elements

(C) Conversion of helium to hydrogen

(D) Conversion of hydrogen to helium