CHM 201 CBT PRACTICE TEST

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Take your time to read instructions before taking this test.

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

PS

In a normal exam you will be asked between 40 – 60 questions but I only arranged 40 questions

Note

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70 – 100 A

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40 – 44 E

0 – 39 F

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Inorganic Chemistry

1 / 40

1.

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

A. Astatine

B. Bromine

C. Fluorine

D. Chlorine

2 / 40

2.

In the gaseous state phosphorus exist as _________,

A. P

B. P4

C. P2

D. P6

3 / 40

3.

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

A. Ions

B. Oxoacids or hydrated oxides

C. Hydrides

D. Salts

4 / 40

4.

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

A. Red-brown-black-white

B. brown-white-red-black

C. White-black-brown-red

D. Black-red-white-brown

5 / 40

5.

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

A. trihalides

B. Dihalides

C. Tetrahalides

D. pentahalides

6 / 40

6.

Dilute nitric acid will oxidise HI to ____________.

A. H

B. I

C. HIO4

D. HIO3

7 / 40

7.

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

A. Acetylene

B. Methanol

C. Ethylene

D. Propanal

8 / 40

8.

Tin is obtained by the ______.

A. Oxidation of oxides of tin with Fe

B. Oxidation of oxides of tin with carbon

C. Reduction of oxides of tin with H

D. Reduction of oxides of tin with carbon

9 / 40

9.

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

 

A. Coordination compounds

B. Polymers

C. Alloys

D. Interstitial carbides

10 / 40

10.

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 oxides

D. Nitrogen and ammonium compounds

11 / 40

11.

The purest and most stable form of silica is ____________

A. Cristobalite

B. Tridymite

C. Flint

D. Quartz

12 / 40

12.

Silica gel is _____________ form of Silicon dioxide.

A. Crystalline

B. Amorphous

C. Gaseous

D. Semi solid

13 / 40

13.

Dilute nitric acid will oxidise H2S to ____________.

A. H2S03

B. S

C. H2SO4

D. H

14 / 40

14.

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

15 / 40

15.

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 form both gaseous and solid oxides whereas others form only gaseous oxides

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

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

16 / 40

16.

Hydrazine has how many lone pairs of electrons?

 

A. 2

B. 0

C. 3

D. 1

17 / 40

17.

Lightning discharge in the atmosphere converts nitrogen to _________.

 

A. Nitrate

B. Nitric Oxide

C. Ammonia

D. Nitirite

18 / 40

18.

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

A. Low ionization energy

B. High electron affinity

C. Have low electron affinity

D. susceptible to oxidation

19 / 40

19.

Concentrated nitric acid behaves as an ______________.

A. None of the options

B. Redox agent

C. Oxidizing agent

D. Reducing agent

20 / 40

20.

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

A. Carbon

B. Germanium

C. Lead

D. Silicon

21 / 40

21.

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. ous acid

B. Hypo-ic acid

C. ic acid

D. Hypo-ous acid

22 / 40

22.

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

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

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 forms solid oxides while the other members do not

23 / 40

23.

Diamond are used in jewellery on account of their ______.

A. Crystalline nature

B. Hard structure

C. High purity

D. High refractive index and dispersive power

24 / 40

24.

________ occurs in the elemental state as diamond and graphite.

A. Carbon

B. Silicon

C. Tin

D. germanium

25 / 40

25.

Ammonia functions as an electron donor because of __________.

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

D. None of the options

26 / 40

26.

The most stable hydride of phosphurous is _________.

A. Phosphorus pentahydride

B. Phosphorus dihydride

C. Phosphide

D. Phosphine

27 / 40

27.

The reaction C6H6 + HNO3 will give _____________.

 

A. C6H5NO2 + H2O2

B. C6H5NO3 + H2

C. C6H5NO2 +H2O

D. C6H5NO + H2O2

28 / 40

28.

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 increasing M-H bond energies

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

29 / 40

29.

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

A. Covalent carbides

B. organic carbides

C. Interstitial carbides

D. Ionic carbides

30 / 40

30.

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

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

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

31 / 40

31.

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

A. Glass, paints,ceramics

B. Plastics, ceramics,paints

C. Glass, ceramics,cement

D. Cement,plastics,glass

32 / 40

32.

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

33 / 40

33.

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

A. Hydrazine is stable

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

C. It has lone pairs of electrons

D. Hydrazine is highly reactive

34 / 40

34.

The chief constituent of glass is ____________.

A. Silicate

B. Silicone byhydride

C. Silica

D. Silicone

35 / 40

35.

Carbon dioxide is used in fire extinguishers because of ________.

A. It does not support combustion

B. It is an acidic oxide

C. It forms carbonates with bases

D. It can be transformed to solid called dry ice

36 / 40

36.

The difference between silica and silicate is ________

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

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

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

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

37 / 40

37.

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

 

A. Ca(H2PO4)2 is reducing

B. Ca(H2PO4)2 is highly reactive

C. Ca(H2PO4)2 is oxidising

D. Ca(H2PO4)2 is water soluble

38 / 40

38.

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

 

A. Silicates

B. Nitrates

C. Sulphates

D. Phosphates

39 / 40

39.

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

A. Hypo-ic acid

B. Hypo-ous acid

C. ous acid

D. ic-acid

40 / 40

40.

Sandstone, granite and slate are examples of ________.

A. Carbides

B. Silica

C. Natural silicates

D. Cristobalite

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