Match the following compounds (Column-I) with their uses (Column-II) S. No. Column-I S.No. Column-II (I) Ca OH 2 (A) casts of statues (II) NaCl (B) white wash (III) CaSO 4 · 1 2 H 2 O (C) antacid (IV) CaCO 3 (D) washing soda preparation

(I)-(B), (II)-(D), (III)-(A), (IV)-(C)

(I)-(D), (II)-(A), (III)-(C), (IV)-(B)

(I)-(B), (II)-(C), (III)-(D), (IV)-(A)

(I)-(D), (II)-(C), (III)-(B), (IV)-(A)

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Calcium hydroxide is more soluble in water than alkali metals hydroxides.

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Important Questions on The s-Block Elements

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Chemistry>Inorganic Chemistry>The s-Block Elements>Some Important Compounds of Calcium

Which of the reactions represents "slaking of lime"?

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Chemistry>Inorganic Chemistry>The s-Block Elements>Some Important Compounds of Calcium

Dead burnt plaster is

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Chemistry>Inorganic Chemistry>The s-Block Elements>Some Important Compounds of Calcium

What is the commercial name for calcium oxide?

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Chemistry>Inorganic Chemistry>The s-Block Elements>Some Important Compounds of Calcium

Calcite crystals used in Nicol's prism are formed of

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Chemistry>Inorganic Chemistry>The s-Block Elements>Some Important Compounds of Calcium

Match the following compounds (Column-I) with their uses (Column-II)

S. No.	Column-I	S.No.	Column-II
(I)	$Ca {(OH)}_{2}$	(A)	casts of statues
(II)	$NaCl$	(B)	white wash
(III)	${CaSO}_{4} \cdot \frac{1}{2} H_{2} O$	(C)	antacid
(IV)	${CaCO}_{3}$	(D)	washing soda preparation

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Chemistry>Inorganic Chemistry>The s-Block Elements>Some Important Compounds of Calcium

When gypsum is heated to

393 K,

it forms:

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Chemistry>Inorganic Chemistry>The s-Block Elements>Some Important Compounds of Calcium

The suspension of slaked lime in water is known as

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Chemistry>Inorganic Chemistry>The s-Block Elements>Some Important Compounds of Calcium

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$(C) (s) + H_{2} O \to (E) (g)$ .
The compound (E)(g) is :

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Chemistry>Inorganic Chemistry>The s-Block Elements>Some Important Compounds of Calcium

_____ oxide is used for purification of sugar.

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Chemistry>Inorganic Chemistry>The s-Block Elements>Some Important Compounds of Calcium

Gypsum is

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Chemistry>Inorganic Chemistry>The s-Block Elements>Some Important Compounds of Calcium

The compound insoluble in acetic acid is

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Chemistry>Inorganic Chemistry>The s-Block Elements>Some Important Compounds of Calcium

The chemical formulae of

X, Y

and

Z

are

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Chemistry>Inorganic Chemistry>The s-Block Elements>Some Important Compounds of Calcium

_____ is a white amorphous solid.On exposure to atmosphere, it absorbs moisture and carbon dioxide.

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Chemistry>Inorganic Chemistry>The s-Block Elements>Some Important Compounds of Calcium

\begin{matrix} {CaCO}_{3} (s) & \overset{Heat}{\to} & X (s) + Z (g) \\ X (s) & \overset{Carbon, heat}{\to} & C (s) + D (g) \\ C (s) + H_{2} O & \to & E (g) \end{matrix}

Then, compound

E (g)

and

C (s)

will be

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Chemistry>Inorganic Chemistry>The s-Block Elements>Some Important Compounds of Calcium

Ancient cement was made by mixing volcanic ash in moist _____.

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Chemistry>Inorganic Chemistry>The s-Block Elements>Some Important Compounds of Calcium

Fill in the blank by choosing the correct word from the list given below:

List: Galvanisation, physical, calcium carbonate, new, calcium hydroxide, energy, substance, saturated, sodium carbonate, moist.

Chemical name of lime water is _____.

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Chemistry>Inorganic Chemistry>The s-Block Elements>Some Important Compounds of Calcium

_____ cement is the most commonly used cement for the construction work.

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Chemistry>Inorganic Chemistry>The s-Block Elements>Some Important Compounds of Calcium

_____ is the most important building material of modern times.

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Chemistry>Inorganic Chemistry>The s-Block Elements>Some Important Compounds of Calcium

When milk of lime is reacted with chlorine, calcium _____ and calcium chlroide is formed.

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Chemistry>Inorganic Chemistry>The s-Block Elements>Some Important Compounds of Calcium

_____ is usually added to regulate the setting rate of cement.

Calcium hydroxide is more soluble in water than alkali metals hydroxides.

Important Questions on The s-Block Elements

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