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 is volatile liquid?

Question # 2

Which is used in arc welding and cutting?

Question # 3

Colour of Iodine is

Question # 4

Gaseous HF exists in the form of

Question # 5

Half life of most stable isotope of astatine is

Question # 6

Colour of fluorine gas is

Question # 7

Corrosion proof parts of machinery are prepared from

Question # 8

Which compound of noble gas xenon can be prepared?

Question # 9

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

Question # 10

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

Question # 11

Perchloric acid can be stored in solution form

Question # 12

Oxidation state of fluorine is:

Question # 13

I2O5is used for quantitative study of

Question # 14

Hydrogen bond is the strongest between the molecules of

Question # 15

Astatine belongs to group:

Question # 16

Second most element in the universe is

Question # 17

The only non-metal in liquid form is

Question # 18

Which has complete valence shell?

Question # 19

Which is used in bacterial lamps

Question # 20

Halogens are called

Question # 21

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

Question # 22

Colour of bromine is

Question # 23

Which is used as cooling medium in nuclear reactors?

Question # 24

Chlorin heptoxide reacts with water to form:

Question # 25

Which is the strongest acid?

Question # 26

Molecule of halogens exist as

Question # 27

Bleaching powder may be produced by passing chlorine over

Question # 28

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

Question # 29

Gaseous HF exists in the form of

Question # 30

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?

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ECAT Chemistry Chapter 16 Important MCQ's

Sr.# Question Answer
1 Smell of halogen is
A. Fruity
B. Sweet
C. Irritating
D. Rotten egg
2 Half life period of astatine is
A. 8.1 hrs
B. 8.2 Hrs
C. 8.3 hrs
D. 8.4 hrs
3 The noble gases are
A. Mono atomio
B. Diatomic
C. Polyatomic
D. All
4 The available chlorine is bleaching power is
A. 25-30%
B. 30-35%
C. 35-40%
D. 40-45%
5 Oxidation state of fluorine is:
A. +1
B. +2
C. -1
D. -2
6 Astatine belongs to group:
A. I-A
B. II-A
C. III-A
D. VII-A
7 Which is present as a result of radioactive decay on earth?
A. He
B. Ne
C. Ar
D. Kr
8 Radioactive element in halogens is
A. Astatine
B. bromine
C. Iodine
D. Fluorine
9 Which halogen will react spontaneously with Au(s)to produce Au3++
A. Br2
B. F2
C. I2
D. Cl2
10 Which is the strongest acid?
A. HClO
B. HClO2
C. HClO3
D. HClO4

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