Easy MCQ +4 / -1 PYQ · JEE Mains 2021

Match List - I with List - II :

List - I List - II
(a) Li (i) photoelectric cell
(b) Na (ii) absorbent of $C{O_2}$
(c) K (iii) coolant in fast breeder nuclear reactor
(d) Cs (iv) treatment of cancer
(v) bearings for motor engines


Choose the correct answer from the options given below :

  1. A (a) - (v), (b) - (i), (c) - (ii), (d) - (iv)
  2. B (a) - (v), (b) - (ii), (c) - (iv), (d) - (i)
  3. C (a) - (iv), (b) - (iii), (c) - (i), (d) - (ii)
  4. D (a) - (v), (b) - (iii), (c) - (ii), (d) - (i) Correct answer

Solution

Li makes alloy with Lead to make white metal bearings for motor engines<br><br>Liquid Na metal is used s coolant in fast breeder nuclear reactor<br><br>K is a very absorbent of CO<sub>2</sub><br><br>Cs is used in making photoelectric cell

About this question

Subject: Chemistry · Chapter: s-Block Elements · Topic: Alkali Metals

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