1
AIPMT 2003
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
A nuclear reaction given by

ZXA $$ \to $$ z+1YA + $$-$$1e0 + $$\overline v $$ represents
A
$$\beta $$-decay
B
$$\gamma $$-decay
C
fusion
D
fission
2
AIPMT 2003
MCQ (Single Correct Answer)
+4
-1
In which of the following systems will the radius of the first orbit (n = 1) be minimum ?
A
doubly ionized lithium
B
singly ionized helium
C
deuterium atom
D
hydrogen atom
3
AIPMT 2002
MCQ (Single Correct Answer)
+4
-1
A deutron is bombarded on 8O16 nucleus then $$\alpha $$-particle is emitted. The product nucleus is
A
7N13
B
5B10
C
4Be9
D
7N14
4
AIPMT 2002
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
A sample of radioactive element containing 4 $$ \times $$ 1016 active nuclei. Half life of element is 10 days, then number of decayed nuclei after 30 days
A
0.5 $$ \times $$ 1016
B
2 $$ \times $$ 1016
C
3.5 $$ \times $$ 1016
D
1 $$ \times $$ 1016
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