ECAT Pre Engineering Chemistry Chapter 16 MCQ Test With Answer

MCQ's Test For ECAT Chemistry Chapter 16 The Halogens and The Noble Gases

Try The MCQ's Test For ECAT Chemistry Chapter 16 The Halogens and The Noble Gases

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ECAT Chemistry Chapter 16 The Halogens and The Noble Gases

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Question # 1

Which compound of noble gas xenon can be prepared?

Question # 2

Gaseous HF exists in the form of

Question # 3

Which has the least oxidizing power?

Question # 4

Perchloric acid can be stored in solution form

Question # 5

Bleaching powder is prepared by the reaction of Cl2 with.

Question # 6

Bleaching powder may be produced by passing chlorine over

Question # 7

Radioactive element in halogens is

Question # 8

The available chlorine is bleaching power is

Question # 9

Which halogen will react spontaneously with Au(s)to produce Au3++

Question # 10

The strongest hydrogen bond is in

Question # 11

Molecule of halogens exist as

Question # 12

Which has complete valence shell?

Question # 13

Used in tooth pastes is

Question # 14

Which of the following hydrogen halide is the weakest acid in solution?

Question # 15

The most reactive elements are:

Question # 16

The compound with cyclic hexamer is

Question # 17

Corrosion proof parts of machinery are prepared from

Question # 18

Non sticking coating in cooking utensils is done by

Question # 19

An element that has a high ionization energy and tends to be chemically inactive would most likely to be

Question # 20

Which is used as cooling medium in nuclear reactors?

Question # 21

Which is used in bacterial lamps

Question # 22

Chlorine heptoxide (Cl2O7) reacts with water to form

Question # 23

Second most element in the universe is

Question # 24

Which is volatile liquid?

Question # 25

Colour of bromine is

Question # 26

Oxidation state of fluorine is

Question # 27

Astatine belongs to group

Question # 28

The only non-metal in liquid form is

Question # 29

Smell of halogens is:

Question # 30

Which is present as a result of radioactive decay on earth?

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ECAT Chemistry Chapter 16 Important MCQ's

Sr.# Question Answer
1 Colour of fluorine gas is
A. Pale yellow
B. Greenish yellow
C. Red brown
D. greyish black
2 Used in tooth pastes is
A. Fluorides
B. Iodides
C. halides
D. nitrides
3 Colour of bromine is
A. Pale yellow
B. Greenish yellow
C. Red brown
D. Greyish black
4 Which is present as a result of radioactive decay on earth?
A. He
B. Ne
C. Ar
D. Kr
5 Chlorine heptoxide (Cl2O7) reacts with water to form
A. Hypochlorous acid
B. chloric acid
C. Perchloric acid
D. Chlorine and Oxygen
6 Which of the following hydrogen halide is the weakest acid in solution
A. HF
B. HBr
C. HI
D. HCl
7 Which noble gas is used in mixture used for breathing by divers?
A. Cl2
B. NH3
C. CO2
D. He
8 Half life period of astatine is
A. 8.1 hrs
B. 8.2 Hrs
C. 8.3 hrs
D. 8.4 hrs
9 Gaseous HF exists in the form of
A. Monomers
B. Cyclic hexamers
C. As single entity
D. Both a and b
10 Corrosion proof parts of machinery are prepared from
A. Iron
B. Copper
C. Plastic
D. Teflon

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