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

Bleaching powder is prepared by the reaction of Cl2 with.

Question # 3

The noble gases are

Question # 4

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

Question # 5

Colour of fluorine gas is

Question # 6

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

Question # 7

Which is used in arc welding and cutting?

Question # 8

Noble gases in the atmosphere are

Question # 9

The strongest acid is

Question # 10

Which has the least oxidizing power?

Question # 11

Oxidation state of fluorine is:

Question # 12

Which halogen occurs naturally in a positive oxidation state?

Question # 13

Gaseous HF exists in the form of

Question # 14

The compound with cyclic hexamer is

Question # 15

Which halogen has Iustrous shining?

Question # 16

The available chlorine is bleaching power is

Question # 17

Oxidation state of fluorine is

Question # 18

Astatine belongs to group:

Question # 19

the anhydride of HCIO4is

Question # 20

Chlorin heptoxide reacts with water to form:

Question # 21

Nobel gases are placed group:

Question # 22

Smell of halogens is:

Question # 23

Half life period of astatine is

Question # 24

Bleaching powder is agent:

Question # 25

Which is used in bacterial lamps

Question # 26

Noble gases are placed in group

Question # 27

Half life of most stable isotope of astatine is

Question # 28

The most reactive elements are

Question # 29

Hydrogen bond is the strongest between the molecules of

Question # 30

Halogens are called.

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ECAT Chemistry Chapter 16 Important MCQ's

Sr.# Question Answer
1 Second most element in the universe is
A. He
B. Ne
C. Ar
D. Kr
2 Colour of Iodine is
A. Pale yellow
B. Greenish yellow
C. Red brown
D. Greyish black
3 Gaseous HF exists in the form of
A. Monomers
B. Cyclic hexamers
C. As single entity
D. Both a and b
4 Which of the following hydrogen halide is the weakest acid in solution
A. HF
B. HBr
C. HI
D. HCl
5 Which halogen has maximum Van-der Waal's forces?
A. F2
B. Cl2
C. Br2
D. I2
6 Astatine belongs to group:
A. I-A
B. II-A
C. III-A
D. VII-A
7 Corrosion proof parts of machinery are prepared from
A. Iron
B. Copper
C. Plastic
D. Teflon
8 Which halogen will react spontaneously with Au(s)to produce Au3++
A. Br2
B. F2
C. I2
D. Cl2
9 Used in tooth pastes is
A. Fluorides
B. Iodides
C. halides
D. nitrides
10 Perchloric acid can be stored in solution form
A. 47%
B. 57%
C. 67%
D. 77%

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