Match the compounds given in column I with their uses mentioned in column II.

Column I Column II

i) $C a C O_{3}$ a) Dentistry, ornamental work

ii) $C a (O H)_{2}$ b) Manufacture of sodium carbonate from caustic soda

iii) CaO c) Manufacture of high-quality paper

iv) $C a S O_{4}$ d) Used in white washing

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Solution

correct match

Column I Column II

i) $C a C O_{3}$ c) Dentistry, ornamental work

ii) $C a (O H)_{2}$ d) Manufacture of sodium carbonate from caustic soda

iii) CaO b) Manufacture of high-quality paper

iv) $C a S O_{4}$ a) Used in white washing

(i)→ (c),

CaCO3 can be applicable for the manufacture of high-quality paper. It is mixed with paper pulp to make paper of bright white colour.

(ii) → (d),

Ca(OH)2 - It is a colourless crystal or white powder and is produced when quicklime is mixed or slaked with water. It is used in whitewashing.

(iii) → (b),

Cao - Calcium oxide, also known as quicklime, is an alkaline substance. It is used in industry for the synthesis of Sodium carbonate from caustic soda.

(iv) → (a)

CaCO3 - Calcium carbonate is a chemical compound and is a common substance found in rocks as the calcite mineral. It is used in Dentistry.

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Match the compounds given in Column I with their uses mentioned in Column II
$\begin{matrix} C o l u m n I & C o l u m n I I A . C a C O_{3} & 1. D e n t i s t r y, o r n a m e n t a l w o r k B . C a (O H)_{2} & 2. M a n u f a c t u r e o f s o d i u m c a r b o n a t e C . C a O & 3. M a n u f a c t u r e o f h i g h q u a l i t y p a p e r D . C a S O_{4} & 4. U s e d i n w h i t e w a s h i n g \end{matrix}$

Q. Match the elements given, in column I correctly with their respective uses given in column II.

Q. Match the chemical substances given in column (I) with their appropriate application given in column (II):

Column I	Column II
(1) Bleaching powder	(i) Preparation of glass
(2) Baking soda	(ii) Production of $H_{2}$ and $C l_{2}$
(3) Washing Soda	(iii) Decolourisation
(4) Sodium chloride	(iv) Antacid

Q. Match the column I with column II and mark the appropriate choice.

	Column I		Column II
(A)	$N a_{2} C O_{3}$	(i)	Caustic soda
(B)	$N a O H$	(ii)	Glauber's salt
(C)	$N a_{2} C O_{3} .10 H_{2} O$	(iii)	Soda ash
(D)	$N a_{2} S O_{4} .10 H_{2} O$	(iv)	Washing soda

Column A	Column B
A. Bleaching powder	i. Preparation of glass
B. Baking soda	ii. Production of $H_{2}$ and $C l_{2}$
C. Washing soda	iii. Decolourisation
D. Sodium chloride	iv. Antacid

Match the chemical substances given in Column (A) with their appropriate application given in Column (B).

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Sodium Thiosulphate

Standard XII Chemistry

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	Column I		Column II
i)	$C a C O_{3}$	a)	Dentistry, ornamental work
ii)	$C a (O H)_{2}$	b)	Manufacture of sodium carbonate from caustic soda
iii)	CaO	c)	Manufacture of high-quality paper
iv)	$C a S O_{4}$	d)	Used in white washing

Match the compounds given in column I with their uses mentioned in column II. Column I Column II i) CaCO3 a) Dentistry, ornamental work ii) Ca(OH)2 b) Manufacture of sodium carbonate from caustic soda iii) CaO c) Manufacture of high-quality paper iv) CaSO4 d) Used in white washing