Skip to content
dronacharya.ai
← JEE Advanced 2015 · Paper 1
PhysicsMatrix match+8 / -4Question 19 of 60

JEE Advanced 2015 · Paper 1, Physics question 19

Match the nuclear processes given in column I with the appropriate option(s) in column II.

Column I

  • A
    Nuclear fusion
  • B
    Fission in a nuclear reactor
  • C
    β\beta-decay
  • D
    γ\gamma-ray emission

Column II

  • P
    Absorption of thermal neutrons by 92235U^{235}_{92}\mathrm U
  • Q
    2760Co^{60}_{27}\mathrm{Co} nucleus
  • R
    Energy production in stars via hydrogen conversion to helium
  • S
    Heavy water
  • T
    Neutrino emission
Mark every match for each entry
PQRST
A
B
C
D
Answer and worked solution

Official answer: A → R; B → P, S; C → Q, T; D → R

  • (A) Fusion: the energy source of stars, converting hydrogen to helium. R (the key also accepts R and T, since the pp chain emits neutrinos).
  • (B) Fission in a reactor: 235^{235}U absorbs thermal neutrons (P), with heavy water as moderator (S).
  • (C) β-decay: 60^{60}Co is a β-emitter (Q), and each β-decay emits a neutrino (T).
  • (D) γ-ray emission: matched to stellar energy production (R), as in the key.

Answer: A → R; B → P, S; C → Q, T; D → R

Topics:Nuclear fission and fusionRadioactive decay
← Previous questionNext question →