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Chemistry Class 10 Chapter 9 - Chemical Equilibrium - 1
1.
A complete reaction is that in which?
a) half reactants are converted into products
b) all reactants are converted into products
c) no reactant is converted into products
d) few reactants are converted into products
2.
In case of liquids in a closed container, when the rate of
evaporation equals the rate of condensation, this is known as?
a) endothermy
b) equilibrium
c) exothermy
d) irreversibility
3.
A reaction that proceeds in the forward as well as in the reverse direction at the same conditions is known as?
a) reversible reaction
b) exothermic reaction
c) endothermic reaction
d) irreversible reaction
4.
Which one of the following reactions does not go to completion?
a) exothermic
b) irreversible
c) reversible
d) endothermic
5.
Which one of the following is a reversible reaction?
a) N
2
+ 3H
2
--> 2NH
3
b) 2SO
2
+ O
2
--> 2 SO
2
c) all of these
d) 2NO + O
2
--> 2NO
2
6.
When the concentration of reactants is high in a reversible reaction, the rate of forward reaction is?
a) slow
b) very slow
c) high
d) zero
7.
In a reversible reaction, initially, the rate of reverse reaction is?
a) high
b) slow
c) zero
d) very high
8.
Increased concentration of products results in ___ of reverse reaction?
a) none of these
b) increase
c) decrease
d) stoppage
9.
The chemical reaction is said to be in the state of equilibrium when?
a) forward reaction exceeds the reverse reaction
b) reverse reaction exceeds the forward reactio
c) forward reaction equals the reverse reaction
10.
Decomposition of SO
3
into SO
2
and O
2
is a? value="a" id="10aq" onClick="Touch(this,10,id,1,0)">
a) reverse re
b) both b and c
c) forward reaction
d) intermediate reaction
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