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

Colour of fluorine gas is

Question # 2

Bleaching powder is prepared by the reaction of Cl2 with.

Question # 3

Chlorin heptoxide reacts with water to form:

Question # 4

Half life period of astatine is

Question # 5

Smell of halogens is:

Question # 6

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

Question # 7

Which is used in arc welding and cutting?

Question # 8

Which halogen has Iustrous shining?

Question # 9

Which halogen occurs naturally in a positive oxidation state?

Question # 10

The available chlorine is bleaching power is

Question # 11

Astatine belongs to group

Question # 12

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

Question # 13

Which is used in bacterial lamps

Question # 14

The only non-metal in liquid form is

Question # 15

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

Question # 16

Which has complete valence shell?

Question # 17

Which of the following represents the correct electronic configuration of the outermost energy level of an element of zero (VIIA) group in the ground state?

Question # 18

Corrosion proof parts of machinery are prepared from

Question # 19

Hydrogen bond is the strongest between the molecules of:

Question # 20

Nobel gases are placed group:

Question # 21

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

Question # 22

Smell of halogen is

Question # 23

Halogens are called

Question # 24

Molecule of halogens exist as

Question # 25

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

Question # 26

Radioactive element in halogens is

Question # 27

Astatine belongs to group:

Question # 28

Noble gases are placed in group

Question # 29

The noble gases are

Question # 30

A property which differs fluorine from the other halogens?

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ECAT Chemistry Chapter 16 Important MCQ's

Sr.# Question Answer
1 Which has the least oxidizing power?
A. F2
B. Cl2
C. Br2
D. I2
2 Noble gases are placed in group
A. Group IV-A
B. Group V-A
C. Group VI-A
D. Group VII-A
3 Angle is OF2is
A. 1200
B. 1800
C. 1050
D. 1020
4 Which is used in bacterial lamps
A. He
B. Ne
C. Ar
D. Kr
5 Colour of fluorine gas is
A. Pale yellow
B. Greenish yellow
C. Red brown
D. greyish black
6 Used in tooth pastes is
A. Fluorides
B. Iodides
C. halides
D. nitrides
7 Which is the strongest acid?
A. HClO
B. HClO2
C. HClO3
D. HClO4
8 Hydrogen bond is the strongest between the molecules of:
A. HF
B. HCl
C. HBr
D. Hl
9 Radioactive element in halogens is
A. Astatine
B. bromine
C. Iodine
D. Fluorine
10 Corrosion proof parts of machinery are prepared from
A. Iron
B. Copper
C. Plastic
D. Teflon

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