1
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
A reaction involving two different reactants can never be
A
Unimolecular reaction
B
First order reaction
C
second order reaction
D
Bimolecular reaction
2
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
Hydrogen bomb is based on the principle of
A
Nuclear fission
B
Natural radioactivity
C
Nuclear fusion
D
Artificial radioactivity
3
AIEEE 2004
MCQ (Single Correct Answer)
+4
-1
In a first order reaction, the concentration of the reactant decreases from 0.8 M to 0.4 M in 15 minutes. The time taken for the concentration to change from 0.1 M to 0.025 M is
A
30 minutes
B
60 minutes
C
7.5 minutes
D
15 minutes
4
AIEEE 2004
MCQ (Single Correct Answer)
+4
-1
Consider the following nuclear reactions
$${}_{92}^{238}M \to {}_Y^XN + 2{}_2^4He$$
$${}_Y^XN \to {}_B^AL + 2{\beta ^ + }$$
The number of neutrons in the element L is
A
140
B
144
C
142
D
146
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