Home CBT TEST CHM 201 CBT PRACTICE TEST

CHM 201 CBT PRACTICE TEST

Phil

February 9, 2024

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

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

Note

Do not be in a hurry to answer the questions

Do not waste time on a question you don’t know

Move as fast as possible and starting with questions that don’t have calculation first to save time

Always crosscheck

Don’t be in a hurry to submit, you are not in a competition

Don’t be scared. Getting an A is easy

Don’t be over confident, you can end up a D, E or F. Calm your blood, no be only you sabi book

Please do well to use our comment box incase there’s a message you want to pass to us

70 – 100 A

60 – 69 B

50 – 59 C

45 – 49 D

40 – 44 E

0 – 39 F

I wish you success

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Inorganic Chemistry

1 / 40

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

A. Sulphates

B. Phosphates

C. Nitrates

D. Silicates

2 / 40

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

3 / 40

Dilute nitric acid will oxidise H2S to ____________.

A. H2SO4

B. S

C. H2S03

D. H

4 / 40

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

A. Hydrazine is stable

B. Hydrazine is highly reactive

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

D. It has lone pairs of electrons

5 / 40

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

A. +3 and +2

B. +3 and +5

C. +2 and +5

D. +3 and +6

6 / 40

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

A. Hydrides

B. Oxoacids or hydrated oxides

C. Salts

D. Ions

7 / 40

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

A. Arsenic

B. Bismuth

C. Nitrogen

D. Phosphorus

8 / 40

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

9 / 40

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

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

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

C. None of the options

D. All the options

10 / 40

10.

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

A. PH3

B. SbH3

C. NH3

D. BiH3

11 / 40

11.

Dilute nitric acid will oxidise HI to ____________.

A. HIO4

B. H

C. I

D. HIO3

12 / 40

12.

The chief constituent of glass is ____________.

A. Silica

B. Silicate

C. Silicone byhydride

D. Silicone

13 / 40

13.

________ occurs in the elemental state as diamond and graphite.

A. germanium

B. Silicon

C. Tin

D. Carbon

14 / 40

14.

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

A. Tetrahalides

B. Dihalides

C. pentahalides

D. trihalides

15 / 40

15.

Table of Contents

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

A. susceptible to oxidation

B. High electron affinity

C. Have low electron affinity

D. Low ionization energy

16 / 40

16.

Tin is obtained by the ______.

A. Oxidation of oxides of tin with carbon

B. Reduction of oxides of tin with carbon

C. Oxidation of oxides of tin with Fe

D. Reduction of oxides of tin with H

17 / 40

17.

The difference between silica and silicate is ________

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

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

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

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

18 / 40

18.

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

19 / 40

19.

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

20 / 40

20.

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

A. White-black-brown-red

B. brown-white-red-black

C. Red-brown-black-white

D. Black-red-white-brown

21 / 40

21.

Silica gel is _____________ form of Silicon dioxide.

A. Crystalline

B. Amorphous

C. Semi solid

D. Gaseous

22 / 40

22.

The reaction C6H6 + HNO3 will give _____________.

A. C6H5NO2 +H2O

B. C6H5NO3 + H2

C. C6H5NO + H2O2

D. C6H5NO2 + H2O2

23 / 40

23.

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

A. Alloys

B. Interstitial carbides

C. Polymers

D. Coordination compounds

24 / 40

24.

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

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

25 / 40

25.

The most stable hydride of phosphurous is _________.

A. Phosphide

B. Phosphorus pentahydride

C. Phosphine

D. Phosphorus dihydride

26 / 40

26.

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

A. Cement,plastics,glass

B. Glass, paints,ceramics

C. Glass, ceramics,cement

D. Plastics, ceramics,paints

27 / 40

27.

Boron and silicon combine with carbon to form ___________.

A. Acetylides

B. Covalent carbides

C. Methanides

D. Catenate compounds

28 / 40

28.

The purest and most stable form of silica is ____________

A. Flint

B. Cristobalite

C. Tridymite

D. Quartz

29 / 40

29.

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

A. Covalent carbides

B. Ionic carbides

C. Interstitial carbides

D. organic carbides

30 / 40

30.

Lightning discharge in the atmosphere converts nitrogen to _________.

A. Nitirite

B. Nitric Oxide

C. Nitrate

D. Ammonia

31 / 40

31.

Sandstone, granite and slate are examples of ________.

A. Silica

B. Carbides

C. Natural silicates

D. Cristobalite

32 / 40

32.

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

A. Ethylene

B. Acetylene

C. Methanol

D. Propanal

33 / 40

33.

Concentrated nitric acid behaves as an ______________.

A. None of the options

B. Redox agent

C. Oxidizing agent

D. Reducing agent

34 / 40

34.

Carbon dioxide is used in fire extinguishers because of ________.

A. It can be transformed to solid called dry ice

B. It is an acidic oxide

C. It does not support combustion

D. It forms carbonates with bases

35 / 40

35.

The forms of carbon include _________.

A. Coke and carbon black

B. Coke and charcoal

C. Charcoal and carbon black

D. Coke, charcoal and carbon black

36 / 40

36.

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 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 increasing M-H bond energies

37 / 40

37.

Hydrazine has how many lone pairs of electrons?

A. 2

B. 1

C. 3

D. 0

38 / 40

38.

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. Trigonal

B. Pyramidal

C. Linear

D. Octahedral

39 / 40

39.

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 solid oxides while the other members do not

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

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

40 / 40

40.

In the gaseous state phosphorus exist as _________,

A. P2

B. P

C. P6

D. P4

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