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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Chemical $A$ is used for water softening to remove temporary hardness. $A$ reacts with sodium carbonate to generate caustic soda. When ${CO}_{2}$ is bubbled through $A,$ it turns cloudy. What is $A ?$

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Important Questions on The s-Block Elements

EASY

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

The correct sequence of thermal stability of the following carbonates is:

EASY

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

What is the commercial name for calcium oxide?

EASY

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

The structures of beryllium chloride in the solid state and vapour phase, respectively, are:

EASY

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

EASY

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

The thermal stability of alkaline earth metal carbonates

- M g C O_{3}, C a C O_{3}, S r C O_{3}

and

B a C O_{3}

, follows the order

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

An alkaline earth metal '

M

' readily forms water soluble sulphate and water insoluble hydroxide. Its oxide

MO

is very stable to heat and does not have rock-salt structure.

M

EASY

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

The correct order of the solubility of alkaline-earth metal sulphates in water is:

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

Which of the following property of alkaline earth metal increases with their atomic number?

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

The solubility of the alkaline earth's metal sulphates in water decreases in the sequence:

EASY

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

The suspension of slaked lime in water is known as

EASY

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

Among the sulphates of alkaline earth metals, the solubilities of

{BeSO}_{4}

and

{MgSO}_{4}

in water, respectively, are :

EASY

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

Which one of the following alkaline earth metal sulphates has its hydration enthalpy greater than its lattice enthalpy?

EASY

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

What is the role of gypsum,

{CaSO}_{4} . 2 H_{2} O

in setting of cement? Identify the correct option from the following:

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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

Sodium sulphate is soluble in water but barium sulphate is insoluble because

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

Which of the following metal hydroxides is amphoteric?

EASY

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

Which of the reactions represents "slaking of lime"?

EASY

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

Portland cement does not contain -

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

The correct order of thermal stability of hydroxides is

EASY

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

On heating which of the following releases

C O_{2}

most easily?

Chemical A is used for water softening to remove temporary hardness. A reacts with sodium carbonate to generate caustic soda. When CO 2 is bubbled through A, it turns cloudy. What is A?

Important Questions on The s-Block Elements

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Chemical $A$ is used for water softening to remove temporary hardness. $A$ reacts with sodium carbonate to generate caustic soda. When ${CO}_{2}$ is bubbled through $A,$ it turns cloudy. What is $A ?$