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Nitrogen And Oxygen - 2
1.
Carbon dioxide is produced when dilute nitric acid reacts with carbonates and bi-carbonates.
a) True
b) False
2.
Ozone is an allotropic form of sulpher.
a) True
b) False
3.
Nitric acid reacts with hydrogen sulphide to give a suspension of sulphur.
a) True
b) False
4.
H
2
+Cl
2
------------------->2HCl is an example of Reducation reaction.
a) False
b) True
5.
The binary compounds of other elements with oxygen are called oxides.
a) True
b) False
6.
The atomic mass of nitrogen is
a) 16
b) 14
c) 7
d) 32
7.
Nitric acid is prepared on industrial scale by the oxidation of.
a) Nitrogen
b) Nitric oxide
c) Ammonia
d) Platinium
8.
In amphoteric oxides the valence number of oxygen is
a) -2
b) -1/2
c) -1
d) -1 �
9.
Oxidation process involves
a) Addition of electrons
b) Addition of O
2
c) Addition of Hydrogen
d) Removal of oxygen
10.
Fe
3+
(aq)+e
-
------------->Fe
2+
is a reaction showing
a) Oxidation Reaction
b) Addition Reaction
c) Redox Reaction
d) Reduction Reaction
11.
Ozone is present in stratosphere at a hight of about
a) 18Km
b) 10 Km
c) 28Km
d) 38Km
12.
The Atmosphere around us is divided into
a) 4 Layers
b) 3 Layers
c) 5 Layers
d) 6 Layers
13.
Chloro fluoro carbons carried by convection currents to the stratosphere
a) Absorb oxygen
b) React with ozone
c) Absorb ozone
d) React with oxygen
14.
Nitrogen is obtained in laboratory by warming aqueous solution of
a) NH
4
Cl + NaNO
2
b) NH
3
+SO
2
c) BaBI
3
+NH
4
Cl
d) NH
3
+NaNO
2
15.
NH
3
+CO
2
react at high temperature and high pressure to give
a) Carbonic acid
b) Nitric acid
c) Urea
d) Calsium
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