Match the terms in $Column 1$ with the relevant item in $Column 2.$

Column I Column II

(A) Hydrogen peroxide is used as a (I) zeolite

(B) Used in calgon method (II) perhydrol

(C) Permanent hardness of hard water is removed by (III) Sodium hexametaphosphate

(IV) propellant

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Solution

Column I Column II

(A) Hydrogen peroxide is used as a (II)

(IV) Perhydrol

Propellant

(B) Used in Calgon method (III) Sodium hexametaphosphate

(C) Permanent hardness of hard water is removed by (I)

(III) zeolite Sodium hexametaphosphate

$(A)$ Hydrogen peroxide is used as perhydrol (strong oxidising agent) and propellant.

$(B)$ Sodium hexametaphosphate $(N a_{6} P_{6} O_{1} 8),$ commercially called 'calgon' , is used for water softening.

$2 C a C l_{2} + N a_{2} [N a_{4} (P 0_{3})_{6}] \to N a_{2} [C a_{2} (P O_{3})_{6}] + 4 N a C l$

This process is called Calgon’s process and hardness in water is removed by the adsorption of $C a^{2 +}$ ions

$(C)$ Permanent hardness of hard water is removed by zeolite and sodium hexametaphosphate(Calgon’s process).

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\begin{matrix} C o l u m n - I & C o l u m n - I I (a) & H y d r o g e n p e r o x i d e i s u s e d a s a & (p) & Z e o l i t e (b) & U s e d i n C a l g o n m e t h o d & (q) & P e r h y d r o l (c) & P e r m a n e n t h a r d n e s s o f w a t e r i s r e m o v e d b y & (r) & H e x a m e t a p h o s p h a t e (s) & P r o p e l l a n t \end{matrix}

Match the terms in $Column 1$ with the relevant item in $Column 2.$

	Column I		Column II
(A)	Electrolysis of water produces	(I)	atomic reactor
(B)	Lithium aluminium hydride is used as	(II)	polar molecule
(C)	Hydrogen chloride is a	(III)	recombines on metal surface to genertae high temperature
(D)	Heavy water is used in	(IV)	reducing agent
(E)	Atomic hydrogen	(V)	hydrogen and oxygen

\begin{matrix} C o l u m n - I & C o l u m n - I I (a) & H y d r o g e n p e r o x i d e i s u s e d a s a & (p) & Z e o l i t e (b) & U s e d i n C a l g o n m e t h o d & (q) & P e r h y d r o l (c) & P e r m a n e n t h a r d n e s s o f w a t e r i s r e m o v e d b y & (r) & H e x a m e t a p h o s p h a t e (s) & P r o p e l l a n t \end{matrix}

\begin{matrix} C o l u m n - I & C o l u m n - I I (a) & E l e c t r o l y s i s o f w a t e r p r o d u c e s & (p) & A t o m i c r e a c t o r (b) & L i t h i u m a l u m i n i u m h y d r i d e i s u s e d a s & (q) & P o l a r m o l e c u l e (c) & H y d r o g e n c h l o r i d e i s a & (r) & C o m b i n e s o n m e t a l s u r f a c e t o g e n e r a t e h i g h t e m p e r a t u r e (d) & H e a v y w a t e r i s u s e d i n & (s) & R e d u c i n g a g e n t (e) & A t o m i c h y d r o g e n & (t) & H y d r o g e n a n d o x y g e n \end{matrix}

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	Column I		Column II
(A)	Hydrogen peroxide is used as a	(I)	zeolite
(B)	Used in calgon method	(II)	perhydrol
(C)	Permanent hardness of hard water is removed by	(III)	Sodium hexametaphosphate
		(IV)	propellant