CHM 201 CBT PRACTICE TEST

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

If you can get at least 60%, you can be rest assured that you’ll ace CHM 201 exam

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Inorganic Chemistry

1 / 40

1.

Diamond are used in jewellery on account of their ______.

A. Hard structure

B. High refractive index and dispersive power

C. High purity

D. Crystalline nature

2 / 40

2.

Which of the following statement is true ?

 

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

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

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 increasing M-H bond energies

3 / 40

3.

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

A. Carbon

B. Silicon

C. Germanium

D. Lead

4 / 40

4.

Hydrazine has how many lone pairs of electrons?

 

A. 3

B. 2

C. 1

D. 0

5 / 40

5.

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

A. Bismuth

B. Nitrogen

C. Phosphorus

D. Arsenic

6 / 40

6.

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

A. Oxoacids or hydrated oxides

B. Hydrides

C. Ions

D. Salts

7 / 40

7.

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

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

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

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

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

8 / 40

8.

Concentrated nitric acid behaves as an ______________.

A. None of the options

B. Oxidizing agent

C. Redox agent

D. Reducing agent

9 / 40

9.

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

A. It has lone pairs of electrons

B. Hydrazine is highly reactive

C. Hydrazine is stable

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

10 / 40

10.

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

A. Interstitial carbides

B. Covalent carbides

C. organic carbides

D. Ionic carbides

11 / 40

11.

Lightning discharge in the atmosphere converts nitrogen to _________.

 

A. Nitric Oxide

B. Nitrate

C. Nitirite

D. Ammonia

12 / 40

12.

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. Trigonal

C. Linear

D. Octahedral

13 / 40

13.

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

A. Nitrogenous and hydrides

B. Ammonium and hydrides

C. Nitrogen and ammonium compounds

D. Nitrogen and oxides

14 / 40

14.

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 oxidising

C. Ca(H2PO4)2 is water soluble

D. Ca(H2PO4)2 is reducing

15 / 40

15.

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 forms complex compounds while the other members do not

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

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

16 / 40

16.

Tin exhibit polymorphism because of _____________ .

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

B. It is a metal as well as a metalloid

C. It exists in two crystalline forms

D. It has a stable configuration

17 / 40

17.

Dilute nitric acid will oxidise HI to ____________.

A. I

B. HIO3

C. H

D. HIO4

18 / 40

18.

The chief constituent of glass is ____________.

A. Silicate

B. Silicone

C. Silicone byhydride

D. Silica

19 / 40

19.

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-ous acid

B. ous acid

C. ic acid

D. Hypo-ic acid

20 / 40

20.

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

A. PH3

B. BiH3

C. NH3

D. SbH3

21 / 40

21.

Sandstone, granite and slate are examples of ________.

A. Natural silicates

B. Silica

C. Cristobalite

D. Carbides

22 / 40

22.

Boron and silicon combine with carbon to form ___________.

 

A. Catenate compounds

B. Covalent carbides

C. Acetylides

D. Methanides

23 / 40

23.

Table of Contents

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

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

B. Attraction and 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. Repulsion of the nonbonding electrons which weaken the N-N bond

24 / 40

24.

In the gaseous state phosphorus exist as _________,

A. P

B. P6

C. P2

D. P4

25 / 40

25.

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

A. trihalides

B. pentahalides

C. Tetrahalides

D. Dihalides

26 / 40

26.

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

A. Hypo-ic acid

B. Hypo-ous acid

C. ic-acid

D. ous acid

27 / 40

27.

Carbon dioxide is used in fire extinguishers because of ________.

A. It does not support combustion

B. It forms carbonates with bases

C. It can be transformed to solid called dry ice

D. It is an acidic oxide

28 / 40

28.

Tin is obtained by the ______.

A. Oxidation of oxides of tin with Fe

B. Reduction of oxides of tin with carbon

C. Oxidation of oxides of tin with carbon

D. Reduction of oxides of tin with H

29 / 40

29.

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

 

A. Coordination compounds

B. Alloys

C. Interstitial carbides

D. Polymers

30 / 40

30.

Silica gel is _____________ form of Silicon dioxide.

A. Gaseous

B. Amorphous

C. Crystalline

D. Semi solid

31 / 40

31.

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

A. Fluorine

B. Astatine

C. Bromine

D. Chlorine

32 / 40

32.

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

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

B. None of the options

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

D. All the options

33 / 40

33.

Ammonia functions as an electron donor because of __________.

A. None of the options

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

C. All the options

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

34 / 40

34.

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

 

A. Sulphates

B. Phosphates

C. Silicates

D. Nitrates

35 / 40

35.

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

A. Plastics, ceramics,paints

B. Cement,plastics,glass

C. Glass, paints,ceramics

D. Glass, ceramics,cement

36 / 40

36.

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

A. brown-white-red-black

B. Black-red-white-brown

C. White-black-brown-red

D. Red-brown-black-white

37 / 40

37.

The most stable hydride of phosphurous is _________.

A. Phosphorus dihydride

B. Phosphine

C. Phosphide

D. Phosphorus pentahydride

38 / 40

38.

The reaction C6H6 + HNO3 will give _____________.

 

A. C6H5NO2 + H2O2

B. C6H5NO3 + H2

C. C6H5NO2 +H2O

D. C6H5NO + H2O2

39 / 40

39.

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

A. Acetylene

B. Methanol

C. Propanal

D. Ethylene

40 / 40

40.

The purest and most stable form of silica is ____________

A. Tridymite

B. Quartz

C. Cristobalite

D. Flint

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