Geochemistry-Stable Isotopes and Their Application to Earth System Processes [CSIR (Council of Scientific & Industrial Research) Earth Sciences]: Questions 1 - 2 of 2

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Question 1

Appeared in Year: 2018

Question MCQ▾

Which of the following isotopes would be the most useful to study the Earth process that has time scales of 1000 years? (June)

Choices

Choice (4)Response

a.

(Half-life million years)

b.

(Half-life years)

c.

(Half-life years)

d.

(Half-life years)

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Question 2

Appeared in Year: 2022

Question Match List-Ⅰ List-Ⅱ▾

Match the isotopes in Column I to the ocean-atmospheric processes in Column II that they are used to study. (January)

List-Ⅰ (Isotopes)List-Ⅱ (The Ocean-Atmospheric Processes)
(A)

15N

(i)

Palaeotemperature

(B)

2H

(ii)

Denitrification

(C)

13C

(iii)

Primary Production

(D)

18O

(iv)

Hydrological Cycle

Choices

Choice (4)Response
  • (A)
  • (B)
  • (C)
  • (D)

a.

  • (ii)
  • (iv)
  • (iii)
  • (i)

b.

  • (iii)
  • (i)
  • (iv)
  • (ii)

c.

  • (iv)
  • (iii)
  • (ii)
  • (i)

d.

  • (ii)
  • (iii)
  • (iv)
  • (i)

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