Match the compounds /metal in $(X)$ with their uses in $(Y)$ .
$X$ $Y$
$A .$ Liquid sodium metal $I .$ Breathing apparatus in submarine
$B .$ Potassium stearate $I I .$ Explosive
$C .$ Potassium nitrate $I I I .$ Coolant in nuclear reaction
$D .$ Potassium superoxide $I V .$ Soft soap

A - I B - I I I C - I I D - I V

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A - I I I B - I V C - I I D - I

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A - I I B - I C - I I I D - I V

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A - I V B - I I C - I I I D - I

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Solution

The correct option is B $A - I I I B - I V C - I I D - I$
1. Liquid sodium metal is used as coolant in nuclear reaction
2. Potassium stearate is used in soft soap
3. Potassium nitrate is explosive
4. Potassium superoxide, which gives off oxygen as it absorbs carbon dioxide is used in Breathing apparatus in submarine

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Similar questions

\begin{matrix} Elements & Electrons in L-shell (a) Hydrogen & (i) 8 (b) Nitrogen & (ii) 0 (c) Lithium & (iii) 1 (d) Neon & (iv) 5 \end{matrix}

X	Y
Liquid sodium metal	Breathing apparatus submarine
Potassium	Explosive
Potassium nitrate	Coolant in nuclear reaction
Potassium superoxide	Soft soap

List 1	List 2
A. Liquid sodium metal	1. breathing apparatus submarine
B. Potassium	2. explosive stearate
C. Potassium nitrate	3. coolant in the nuclear reactor
D. Potassium superoxide	4. soft soap

Match list-I with list-II and select the correct answer using the codes given below -

List-I List-II

Ion Radius (in pm)

(I) $L i^{+}$ (a) 216

(II) $N a^{+}$ (b) 195

(III) $B r^{-}$ (c) 60

(IV) $I^{-}$ (d) 95

Match list-I with list-II and select the correct answer using the codes given below -

List-I List-II

Ion Radius (in pm)

(I) Li+ (a) 216

(II) Na+ (b) 195

(III) Br- (c) 60

(IV) I- (d) 95

Codes: I II III IV

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$X$	$Y$
$A .$ Liquid sodium metal	$I .$ Breathing apparatus in submarine
$B .$ Potassium stearate	$I I .$ Explosive
$C .$ Potassium nitrate	$I I I .$ Coolant in nuclear reaction
$D .$ Potassium superoxide	$I V .$ Soft soap