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There are 40 questions which you are to answer in 15 minutes that gives you roughly 30 seconds per question.

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Inorganic Chemistry

1 / 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

2 / 40

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

A. Arsenic

B. Phosphorus

C. Nitrogen

D. Bismuth

3 / 40

Other halogens apart from fluorine exhibit variable oxidation states due to ________.

A. None of the options

B. Other halogens have vacant d orbital whereas fluorine doesn't

C. All the options

D. Other halogens have vacant p orbital whereas fluorine doesn't

4 / 40

Hydrazine has how many lone pairs of electrons?

A. 3

B. 0

C. 1

D. 2

5 / 40

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

A. Ionic carbides

B. Interstitial carbides

C. organic carbides

D. Covalent carbides

6 / 40

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

A. Have low electron affinity

B. High electron affinity

C. Low ionization energy

D. susceptible to oxidation

7 / 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. Repulsion between N-N bond and N-H bond in hydrazine

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

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

8 / 40

Dilute nitric acid will oxidise H2S to ____________.

A. H

B. H2S03

C. H2SO4

D. S

9 / 40

The chief constituent of glass is ____________.

A. Silicone byhydride

B. Silica

C. Silicone

D. Silicate

10 / 40

10.

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

A. Alloys

B. Interstitial carbides

C. Polymers

D. Coordination compounds

11 / 40

11.

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

A. Phosphates

B. Nitrates

C. Sulphates

D. Silicates

12 / 40

12.

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

A. Germanium

B. Lead

C. Silicon

D. Carbon

13 / 40

13.

Lightning discharge in the atmosphere converts nitrogen to _________.

A. Nitric Oxide

B. Nitirite

C. Ammonia

D. Nitrate

14 / 40

14.

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

A. +2 and +5

B. +3 and +5

C. +3 and +2

D. +3 and +6

15 / 40

15.

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

A. Ca(H2PO4)2 is highly reactive

B. Ca(H2PO4)2 is water soluble

C. Ca(H2PO4)2 is oxidising

D. Ca(H2PO4)2 is reducing

16 / 40

16.

Diamond are used in jewellery on account of their ______.

A. Crystalline nature

B. Hard structure

C. High refractive index and dispersive power

D. High purity

17 / 40

17.

Boron and silicon combine with carbon to form ___________.

A. Methanides

B. Catenate compounds

C. Covalent carbides

D. Acetylides

18 / 40

18.

The element with the highest electron affinity amongst the halogens is ___________.

A. Bromine

B. Chlorine

C. Astatine

D. Fluorine

19 / 40

19.

Which of the options below indicates how carbon behaves differently from other members of Group 4?

A. Carbon forms solid oxides while the other members do not

B. Carbon has a much higher electronegativity and higher ionisation energy than other elements in the group

C. Carbon has a maximum covalency of 6 while other members have 4

D. Carbon forms complex compounds while the other members do not

20 / 40

20.

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

A. White-black-brown-red

B. Black-red-white-brown

C. brown-white-red-black

D. Red-brown-black-white

21 / 40

21.

Table of Contents

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

A. Cement,plastics,glass

B. Glass, paints,ceramics

C. Plastics, ceramics,paints

D. Glass, ceramics,cement

22 / 40

22.

The forms of carbon include _________.

A. Coke and carbon black

B. Coke, charcoal and carbon black

C. Coke and charcoal

D. Charcoal and carbon black

23 / 40

23.

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

A. Ethylene

B. Acetylene

C. Propanal

D. Methanol

24 / 40

24.

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

A. Hydrides

B. Salts

C. Ions

D. Oxoacids or hydrated oxides

25 / 40

25.

Dilute nitric acid will oxidise HI to ____________.

A. HIO4

B. HIO3

C. H

D. I

26 / 40

26.

In the gaseous state phosphorus exist as _________,

A. P4

B. P2

C. P

D. P6

27 / 40

27.

Ammonia functions as an electron donor because of __________.

A. All the options

B. None of the options

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

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

28 / 40

28.

The most stable hydride of phosphurous is _________.

A. Phosphorus pentahydride

B. Phosphine

C. Phosphorus dihydride

D. Phosphide

29 / 40

29.

Which of the following statement is true ?

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

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

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

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

30 / 40

30.

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

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

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

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

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

31 / 40

31.

The purest and most stable form of silica is ____________

A. Cristobalite

B. Quartz

C. Tridymite

D. Flint

32 / 40

32.

The reaction C6H6 + HNO3 will give _____________.

A. C6H5NO3 + H2

B. C6H5NO2 + H2O2

C. C6H5NO + H2O2

D. C6H5NO2 +H2O

33 / 40

33.

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

A. BiH3

B. PH3

C. SbH3

D. NH3

34 / 40

34.

Concentrated nitric acid behaves as an ______________.

A. None of the options

B. Reducing agent

C. Oxidizing agent

D. Redox agent

35 / 40

35.

Sandstone, granite and slate are examples of ________.

A. Cristobalite

B. Carbides

C. Natural silicates

D. Silica

36 / 40

36.

Tin exhibit polymorphism because of _____________ .

A. It has a stable configuration

B. It is a metal as well as a metalloid

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

D. It exists in two crystalline forms

37 / 40

37.

Carbon dioxide is used in fire extinguishers because of ________.

A. It is an acidic oxide

B. It forms carbonates with bases

C. It does not support combustion

D. It can be transformed to solid called dry ice

38 / 40

38.

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

A. Nitrogen and ammonium compounds

B. Ammonium and hydrides

C. Nitrogen and oxides

D. Nitrogenous and hydrides

39 / 40

39.

To distinguish between the oxidation states of the central atom in oxoacids, suffixes in which the central atom is in a lower oxidation state are termed _

A. Hypo-ic acid

B. ous acid

C. ic acid

D. Hypo-ous acid

40 / 40

40.

________ occurs in the elemental state as diamond and graphite.

A. Silicon

B. Carbon

C. Tin

D. germanium

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