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Nuclei · Question 66

AIPMT 2002MCQEasy📈 Topic in 0% papers+4−1
1

Which of the following are suitable for the fusion process?

  1. light nuclei
  2. heavy nuclei
  3. elements lying in the middle of the periodic table
  4. middle elements, which are lying on binding energy curve.

Answer

(1) light nuclei

Solution

As per NCERT, when two light nuclei fuse to form a larger nucleus, the binding energy per nucleon increases and energy is released (nuclear fusion).

∵ Heavy nuclei release energy by fission, and middle elements (near A 56) are the most stable, so they release no energy by fusion.

∴ Light nuclei are suitable for fusion.

Answer: (1)

AIPMT 2002

Keep practising — Nuclei

2

A deuteron is bombarded on 8O16 nucleus, then an -particle is emitted. The product nucleus is

  1. 7N13
  2. 5B10
  3. 4Be9
  4. 7N14
AIPMT 2002
3

A sample of radioactive element containing 4 1016 active nuclei. Half-life of element is 10 days, then number of decayed nuclei after 30 days

  1. 0.5 1016
  2. 2 1016
  3. 3.5 1016
  4. 1 1016
Out of syllabusAIPMT 2002
4

X(n, ) 73Li, then X will be

  1. 105B
  2. 95B
  3. 114Be
  4. 42He
AIPMT 2001
5

Mn and Mp represent the mass of neutron and proton respectively. An element having mass M has N neutrons and Z protons, then the correct relation will be

  1. M < \N Mn + Z Mp\
  2. M > \N Mn + Z Mp\
  3. M = \N Mn + Z Mp\
  4. M = N\Mn + Mp\
AIPMT 2001
6

Energy released in nuclear fission is due to

  1. some mass is converted into energy
  2. total binding energy of fragments is more than the binding energy of parental element
  3. total binding energy of fragments is less than the binding energy of parental element
  4. total binding energy of fragments is equal to the binding energy of parental element
AIPMT 2001
7

Which rays contain (positive) charged particles?

  1. -rays
  2. -rays
  3. -rays
  4. X-rays
Out of syllabusAIPMT 2001
8

Half life of a radioactive element is 12.5 hours and its quantity is 256 g. After how much time its quantity will remain 1 g?

  1. 50 h
  2. 100 h
  3. 150 h
  4. 200 h
Out of syllabusAIPMT 2001
9

Nuclear fission is best explained by

  1. liquid drop model
  2. Yukawa -meson theory
  3. independent particle model of the nucleus
  4. proton-proton cycle
AIPMT 2000
10

For the given reaction, the particle X is 6C11 5B11 + + + X

  1. neutron
  2. anti neutrino
  3. neutrino
  4. proton
Out of syllabusAIPMT 2000
11

The relation between and T1/2 is ( T1/2 half-life)

  1. T1/2 = 2
  2. T1/2 2 =
  3. T1/2 = 1
  4. ( + T1/2) = 2
Out of syllabusAIPMT 2000

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