Hydrogen Test

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	Hydride type		Compound
(A)	Electron deficient	(i)	$$LiH$$
(B)	Saline	(ii)	$$CH_{4}$$
(C)	Electrons-precise	(iii)	$$NH_{3}$$
(D)	Interstitial	(iv)	$$B_{2}H_{6}$$
(E)	Electron rich	(v)	$$CrH$$

	column I		column II
A	NaH	i	Interstitial hydride
B	$$CH_{4}$$	ii	Molecular hydride
C	$$VH_{0.56}$$	iii	Ionic hydride
D	$$B_{2}H_{6}$$	iv	Electron-deficient hydride

Hydrogen Test -...

Question 1

$$(A) - (ii), (B) - (iv), (C) - (v), (D) - (iii), (E) - (i)$$

$$(A) - (iv), (B) - (i), (C) - (ii), (D) - (v), (E) - (iii)$$

$$(A) - (iv), (B) - (iii), (C) - (v), (D) - (ii), (E) - (i)$$

$$(A) - (v), (B) - (iii), (C) - (iv), (D) - (ii), (E) - (i)$$

$$(A) - (iv), (B) - (v), (C) - (i), (D) - (ii), (E) - (iii)$$

Question 2

Among lanthanoids, europioum and ytterbium form ionic hydrides.

The density of ionic hydrides is less, while the density of interstitial hydrides is more than the metals from which they are formed.

The rate of reaction of alkali metals towards hydrogen decreases from lithium to caesium

Hydrogen gas can be purified by the phenomenon of occlusion of hydrogen by palladium metal.

Question 3

hydride ions

acidic solution

protons

basic solution

Question 4

petroleum

coal

coke

natural gas

Question 5

$$3Fe + 4H_{2} O (steam) \rightarrow Fe_{3} O_{4} + 4H_{2}$$

$$2Na + 2H_{2}O \rightarrow 2NaOH + H_{2}$$

$$CaH_{2} + 2H_{2}O\rightarrow Ca(OH)_{2} + 2H_{2}$$

$$Zn + H_{2}SO_{4} (dil.) \rightarrow ZnSO_{4} + H_{2}$$

Question 6

$${ CsClO }_{ 4 }$$

$${ NaClO }_{ 4 }$$

$${ KClO }_{ 4 }$$

$${ LiClO }_{ 4 }$$

Question 7

$$NaH$$

$$HCOONa$$

$$CaH_{2}$$

$$LiH$$

Question 8

Ionic hydrides are crystalline, non-volatile and non-conducting in solid state

Electron-deficient hydrides act as Lewis acids or electron acceptors

Elements of group$$-13$$ form electron-deficient hydride

Elements of group $$15-17$$ form electron-precise hydrides

Question 9

$$F_{2} > Cl_{2} > Br_{2} > I_{2}$$

$$I_{2} > Br_{2} > Cl_{2} > F_{2}$$

$$Cl_{2} > Br_{2} > I_{2} > F_{2}$$

$$Br_{2} > Cl_{2} > F_{2} > I_{2}$$

Question 10

$$(A)\rightarrow (iii), (B)\rightarrow (iv), (C)\rightarrow (ii) (D)\rightarrow (i)$$

$$(A)\rightarrow (ii), (B)\rightarrow (iv), (C)\rightarrow (iii) (D)\rightarrow (i)$$

$$(A)\rightarrow (i), (B)\rightarrow (ii), (C)\rightarrow (iv) (D)\rightarrow (iii)$$

$$(A)\rightarrow (iii), (B)\rightarrow (ii), (C)\rightarrow (i) (D)\rightarrow (iv)$$

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