Question Bank No: 2

1. Ozone is not

 a)An allotrope
 b)A powerful oxidising agent
 c)Paramagnetic
 d)A bent molecule

2. Iodine oxidises the S2O42− ion to

 a)SO32−
 b)SO42−
 c)S4O62−
 d)S2−

3. In graphite, electrons are

 a)Localised on every third C-atom
 b)Present in anti-bonding orbital
 c)Localised in each C-atom
 d)Spread out between the structure

4. Which of the following does not give a borax bead test?

 a)Chromium
 b)Ferrous salt
 c)Sodium
 d)Cobalt

5. Identify the correct statement with respect to carbon monoxide.

 a)It combines with water to form carbonic acid
 b)It reacts with haemoglobin in red blood cells
 c)It is a powerful oxidising agent
 d)It is used to prepare aerated drinks

6. On the addition of mineral acid to an aqueous solution of borax, the following compound is formed

 a)Boron hydride
 b)Orthoboric acid
 c)Metabolic acid
 d)Pyroboric acid

7. Which one of the following is not the characteristic property of carbon?

 a)It exhibits catenation
 b)It forms compounds with multiple bonds
 c)Its melting point and boiling point are exceptionally high
 d)Its shows semi-metallic character

8. Which of the nitrates on strong heating leaves the metal as the residue ?

 a)AgNO3
 b)Pb(NO3)2
 c)Cu(NO3)2
 d)Al(NO3)3

9. Which oxide does not act as a reducing agent

 a)NO
 b)NO2
 c)N2O
 d)N2O5

10. Boric acid is polymeric due to

 a)Its acidic nature
 b)The presence of hydrogen bonds
 c)Its monobasic nature
 d)Its geometry

11. Of the following which is paramagnetic and has three electron bond in its structure

 a)N2O
 b)NO
 c)N2O3
 d)N2O5