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Inorganic Chemistry

1 / 40

The tetrahedron of the trihydrides of Group 5 elements is distorted due to repulsion between the lone pair of electrons and the bonded pairs giving these hydrides __________ structure.

A. Pyramidal

B. Octahedral

C. Trigonal

D. Linear

2 / 40

Ammonifying bacteria present in the soil decompose plants and animals when they die into ________

A. Nitrogen and oxides

B. Ammonium and hydrides

C. Nitrogenous and hydrides

D. Nitrogen and ammonium compounds

3 / 40

The bond energy of N-N bond in hydrazine is very small due to _______.

A. Repulsion of the nonbonding electrons which weaken the N-N bond

B. Attraction and repulsion between N-N bond and N-H bond in hydrazine

C. Repulsion between N-N bond and N-H bond in hydrazine

D. Attractive and repulsion of the nonbonding electrons and the N-N bond in hydrazine

4 / 40

Table of Contents

The principal constituents of all rocks, clays and soils are ______.

A. Phosphates

B. Silicates

C. Nitrates

D. Sulphates

5 / 40

The difference between silica and silicate is ________

A. Silica is made of SiO4 units whereas silicate is made of SiO6 units

B. Silica is made of SiO2 units whereas silicate is made of SiO4 units

C. Silica is made of SiO6 units whereas silicate is made of SiO2 units

D. Silica is made of SiO4 units whereas silicate is made of SiO2 units

6 / 40

Carbon dioxide is used in fire extinguishers because of ________.

A. It does not support combustion

B. It is an acidic oxide

C. It can be transformed to solid called dry ice

D. It forms carbonates with bases

7 / 40

All the elements of Group 5 can expand their octet except _____________.

A. Nitrogen

B. Bismuth

C. Arsenic

D. Phosphorus

8 / 40

The tendency of ________ to form multiple bonds easily is due to its high bond energy and small atomic radius.

A. Silicon

B. Carbon

C. Lead

D. Germanium

9 / 40

Diamond are used in jewellery on account of their ______.

A. Hard structure

B. High purity

C. Crystalline nature

D. High refractive index and dispersive power

10 / 40

10.

Concentrated nitric acid readily oxidises solid non metals and metalloids to their respective _____________.

A. Ions

B. Salts

C. Oxoacids or hydrated oxides

D. Hydrides

11 / 40

11.

Concentrated nitric acid behaves as an ______________.

A. Oxidizing agent

B. Redox agent

C. Reducing agent

D. None of the options

12 / 40

12.

The tendency of gaining an electron to acquire a stable noble gas configuration makes the halogens ________.

A. High electron affinity

B. Have low electron affinity

C. Low ionization energy

D. susceptible to oxidation

13 / 40

13.

The reactivity of the various allotropes of phosphorus towards other substances decreases in the order?

A. brown-white-red-black

B. White-black-brown-red

C. Black-red-white-brown

D. Red-brown-black-white

14 / 40

14.

Lightning discharge in the atmosphere converts nitrogen to _________.

A. Nitric Oxide

B. Nitrate

C. Ammonia

D. Nitirite

15 / 40

15.

Superphosphate of lime is a more effective fertilizer than phosphate rock because of _________.

A. Ca(H2PO4)2 is oxidising

B. Ca(H2PO4)2 is reducing

C. Ca(H2PO4)2 is highly reactive

D. Ca(H2PO4)2 is water soluble

16 / 40

16.

Which of the options below shows how carbon behaves differently from the rest of the elements in its group?

A. Carbon has a much lesser electronegativity than other elements in the group

B. Carbon has a maximum covalency of 4 and can therefore form complex compounds

C. Carbon form both gaseous and solid oxides whereas others form only gaseous oxides

D. Carbon is the only element in the group that can form stable derivatives with double and triple bonds

17 / 40

17.

The chief constituent of glass is ____________.

A. Silicone

B. Silica

C. Silicone byhydride

D. Silicate

18 / 40

18.

Silica gel is _____________ form of Silicon dioxide.

A. Gaseous

B. Crystalline

C. Amorphous

D. Semi solid

19 / 40

19.

Sandstone, granite and slate are examples of ________.

A. Silica

B. Carbides

C. Cristobalite

D. Natural silicates

20 / 40

20.

The compound among the options below with the least bond energy is ___________.

A. SbH3

B. BiH3

C. NH3

D. PH3

21 / 40

21.

The most stable hydride of phosphurous is _________.

A. Phosphorus pentahydride

B. Phosphine

C. Phosphorus dihydride

D. Phosphide

22 / 40

22.

____________ are formed by combination of carbon with some transition metals.

A. Interstitial carbides

B. Coordination compounds

C. Polymers

D. Alloys

23 / 40

23.

Tin exhibit polymorphism because of _____________ .

A. It is a metal as well as a metalloid

B. It exists in two crystalline forms

C. It can function as a conductor and semi-conducto

D. It has a stable configuration

24 / 40

24.

Dilute nitric acid will oxidise HI to ____________.

A. HIO3

B. HIO4

C. I

D. H

25 / 40

25.

Which one of the following compounds is formed when carbides are decomposed by water or dilute acids?

A. Methanol

B. Propanal

C. Acetylene

D. Ethylene

26 / 40

26.

_____ is the main types of halides formed by Group 5 elements.

A. pentahalides

B. trihalides

C. Tetrahalides

D. Dihalides

27 / 40

27.

Group 5 elements form compounds mainly in two oxidation states, namely ____________.

A. +3 and +5

B. +2 and +5

C. +3 and +6

D. +3 and +2

28 / 40

28.

The forms of carbon include _________.

A. Coke, charcoal and carbon black

B. Coke and carbon black

C. Coke and charcoal

D. Charcoal and carbon black

29 / 40

29.

________ occurs in the elemental state as diamond and graphite.

A. Silicon

B. Tin

C. Carbon

D. germanium

30 / 40

30.

_________ are formed by elements of 1,2, 3,11,12 and13 except boron.

A. Interstitial carbides

B. Covalent carbides

C. Ionic carbides

D. organic carbides

31 / 40

31.

Which of the following statement is true ?

A. Stability of covalent hydrides of Group 4 elements increases down the group because of decreasing M-H bond ebergies

B. Stability of covalent hydrides of Group 4 elements increases down the group because of increasing M-H bond energies

C. Stability of covalent hydrides of Group 4 elements remains unchange as you move down the group

D. Stability of covalent hydrides of Group 4 elements decreases down the group because of decreasing M-H bond energies

32 / 40

32.

In the gaseous state phosphorus exist as _________,

A. P

B. P6

C. P2

D. P4

33 / 40

33.

Hydrazine can act as a coordinating ligand forming complexes with metal ions because of _________.

A. Hydrazine is highly reactive

B. It has lone pairs of electrons

C. Hydrazine is stable

D. The bond energy of N-N bond in hydrazine is very small

34 / 40

34.

Dilute nitric acid will oxidise H2S to ____________.

A. H

B. S

C. H2S03

D. H2SO4

35 / 40

35.

Mineral silicates plays an important role in national economy because from it is produced _______.

A. Glass, paints,ceramics

B. Glass, ceramics,cement

C. Cement,plastics,glass

D. Plastics, ceramics,paints

36 / 40

36.

Hydrazine has how many lone pairs of electrons?

A. 0

B. 3

C. 2

D. 1

37 / 40

37.

The purest and most stable form of silica is ____________

A. Cristobalite

B. Flint

C. Quartz

D. Tridymite

38 / 40

38.

Oxoacids in which the central atom is in a higher oxidation states are termed as ____________.

A. Hypo-ic acid

B. ous acid

C. Hypo-ous acid

D. ic-acid

39 / 40

39.

Ammonia functions as an electron donor because of __________.

A. Lone pair of electron on the nitrogen atom available for donation

B. All the options

C. The nitrogen atom being more electronegative than hydrogen draws the electron pair it shares with hydrogen to itself, and can therefore donate it