Chemistry Class-11: Chapter –10. The s-Block Elements Part – 4

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II. Multiple Choice Questions (Type-II)

In the following questions two or more options may be correct.

Question: 22

Metallic elements are described by their standard electrode potential, fusion enthalpy, atomic size, etc. The alkali metals are characterized by which of the following properties?

(i) High boiling point

(ii) High negative standard electrode potential

(iii) High density

(iv) Large atomic size

Answer: (ii), (iv)

Question: 23

Several sodium compounds find use in industries. Which of the following compounds are used for textile industry?

(i)

(ii)

(iii)

(iv)

Answer: (i), (iii)

Question: 24

Which of the following compounds are readily soluble in water?

(i)

(ii)

(iii)

(iv)

Answer: (i), (ii)

Question: 25

When Zeolite, which is hydrated sodium aluminium silicate is treated with hard water, the sodium ions are exchanged with which of the following ion(s)?

(i)

(ii)

(iii)

(iv)

Answer: (ii), (iii)

Question: 26

Identify the correct formula of halides of alkaline earth metals from the following.

(i)

(ii)

(iii)

(iv)

Answer: (i), (iii)

Question: 27

Choose the correct statements from the following.

(i) Beryllium is not readily attacked by acids because of the presence of an oxide film on the surface of the metal.

(ii) Beryllium sulphate is readily soluble in water as the greater hydration enthalpy of overcomes the lattice enthalpy factor.

(iii) Beryllium exhibits coordination number more than four.

(iv) Beryllium oxide is purely acidic in nature.

Answer: (i), (ii)

Question: 28

Which of the following are the correct reasons for anomalous behaviour of lithium?

(i) Exceptionally small size of its atom

(ii) Its high polarizing power

(iii) It has high degree of hydration

(iv) Exceptionally low ionization enthalpy

Answer: (i), (ii)

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