Given below are certain matching type questions, where two columns (each having 4 items) are given. Immediately after the columns the matching grid is given, where each item of Column I has to be matched with the items of Column II, by encircling the corr

Question

Given below are certain matching type questions, where two columns (each having 4 items) are given. Immediately after the columns the matching grid is given, where each item of Column I has to be matched with the items of Column II, by encircling the correct match(es). Note that an item of Column I can match with more than one item of Column II. All the items of Column II must be matched. Match the following: [2006]

	Column I		Column II
(A)	Nuclear fusion	(p)	Converts some matter into energy
(B)	Nuclear fission	(q)	Generally possible for nuclei with low atomic number
(C)	$β$ -decay	(r)	Generally possible for nuclei with higher atomic number
(D)	Exothermic nuclear reaction	(s)	Essentially proceeds by weak nuclear forces

Smart Achievers · Accepted Answer

(2)

A → p, q; B → p, r; C → p, s; D → p, q, r

In a nuclear fusion reaction, two or more lighter nuclei combine to give a comparatively heavier nucleus and some matter is converted into energy.

In a nuclear fission reaction, a heavy nucleus breaks into two or more lighter nuclei and some matter is converted into energy.

$β$ -decay essentially proceeds by weak nuclear forces and converts some matter into energy.

Exothermic nuclear reaction is possible for both nuclei with low and high atomic number and releases energy.

Solution

1 A → p, q, r; B → p, r; C → p, s; D → p, q

2 A → p, q; B → p, r; C → p, s; D → p, q, r

3 A → p, q, r; B → p, s; C → p, r; D → p, q

4 A → p, r; B → p, q, r; C → p, s; D → p, q

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