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 noble gas is used in mixture used for breathing by divers?

Question # 2

The available chlorine is bleaching power is

Question # 3

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

Question # 4

Astatine belongs to group

Question # 5

Smell of halogen is

Question # 6

A property which differs fluorine from the other halogens?

Question # 7

Oxidation state of fluorine is

Question # 8

Halogens are called.

Question # 9

Bleaching powder may be produced by passing chlorine over

Question # 10

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

Question # 11

the anhydride of HCIO4is

Question # 12

Colour of Iodine is

Question # 13

Smell of halogens is:

Question # 14

Radioactive element in halogens is

Question # 15

Second most element in the universe is

Question # 16

Chlorine heptoxide (Cl2O7) reacts with water to form

Question # 17

Which halogen has maximum Van-der Waal's forces?

Question # 18

Molecule of halogens exist as

Question # 19

Angle is OF2is

Question # 20

Half life period of astatine is

Question # 21

Astatine belongs to group:

Question # 22

The most reactive elements are

Question # 23

Which halogen occurs naturally in a positive oxidation state?

Question # 24

Used in tooth pastes is

Question # 25

The compound with cyclic hexamer is

Question # 26

Which has complete valence shell?

Question # 27

Colour of bromine is

Question # 28

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

Question # 29

Which halogen has Iustrous shining?

Question # 30

Noble gases in the atmosphere are

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ECAT Chemistry Chapter 16 Important MCQ's

Sr.# Question Answer
1 Smell of halogens is:
A. Fruity
B. Sweet
C. Irritating
D. Rotten egg
2 Astatine belongs to group
A. I-A
B. II-A
C. III-A
D. VII-A
3 Which is used in arc welding and cutting?
A. He
B. Ne
C. Ar
D. Kr
4 the anhydride of HCIO4is
A. CIO3
B. ClO2
C. Cl2O5
D. Cl2O7
5 I2O5is used for quantitative study of
A. CO2
B. NO2
C. NO
D. CO
6 Which has the least oxidizing power?
A. F2
B. Cl2
C. Br2
D. I2
7 Colour of chlorine is
A. Pale yellow
B. Greenish yellow
C. Red brown
D. Greyish black
8 Used in tooth pastes is
A. Fluorides
B. Iodides
C. halides
D. nitrides
9 Astatine belongs to group:
A. I-A
B. II-A
C. III-A
D. VII-A
10 A property which differs fluorine from the other halogens?
A. Direct combination with inert gases
B. Uninegative
C. Diatomic
D. ns2 , np5

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