1
AIPMT 2011 Prelims
MCQ (Single Correct Answer)
+4
-1
The power obtained in a reactor using U235 disintegration is 1000 kW. The mass decay of U235 per hour is
A
10 microgram
B
20 microgram
C
40 microgram
D
1 microgram
2
AIPMT 2011 Prelims
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
The half life of a radioactive isotope X is 50 years. It decays to another element Y which is stable. The two elements X and Y were found to be in the ratio of 1 : 15 in a sample of a given rock. The age of the rock was estimated to be
A
150 years
B
200 years
C
250 years
D
100 years
3
AIPMT 2011 Prelims
MCQ (Single Correct Answer)
+4
-1
The wavelength of the first line of Lyman series for hydrogen atom is equal to that of the second line of Balmer series for a hydrogen like ion. The atomic number Z of hydrogen like ion is
A
3
B
4
C
1
D
2
4
AIPMT 2011 Prelims
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
A nucleus $${}_n^mX$$ emits one $$\alpha $$ particle and two $$\beta $$ particles. The resulting nucleus is
A
$${}_{n - 4}^{m - 6}Z$$
B
$${}_n^{m - 6}Z$$
C
$${}_n^{m - 4}X$$
D
$${}_{n - 2}^{m - 4}Y$$
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