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1.
The correct order of ionizing capacity of 
and 
rays is
and rays is
2.
The dependence of binding energy per nucleon, 
on the mass number, 
, is represented by
on the mass number, , is represented by
3.
Pick out the unmatched pair from the following
4.
A count rate metre shows a count of 240 per minute from a given radioactive source later the metre shows a count rate 0f 
. The half-life of the source is
. The half-life of the source is
5.
A nucleus 
emits an 
-particle. The resultant nucleus emits a 
particle. The respective atomic and mass numbers of the final nucleus will be
emits an -particle. The resultant nucleus emits a particle. The respective atomic and mass numbers of the final nucleus will be
6.
The nucleus 
splits exactly in half in a fission reaction in which two neutrons are released.The resultant nuclei are
splits exactly in half in a fission reaction in which two neutrons are released.The resultant nuclei are
7.
A mixture consists of two radioactive materials 
and 
with half lives of 
and 
respectively. Initially the mixture has 
of and 
of . The amount of the two in the mixture will become equal after
and with half lives of and respectively. Initially the mixture has of and of . The amount of the two in the mixture will become equal after
8.
Binding energy per nucleon verses mass number curve for nuclei is shown in the figure. 
and 
are four nuclei indicated on the curve. The process that would release energy is
and are four nuclei indicated on the curve. The process that would release energy is
9.
The number of neutrons released when 
undergoes fission by absorbing 
and 
are formed is
undergoes fission by absorbing and are formed is
10.
Which of the following isotopes is normally fissionable