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

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

Question # 2

Which has complete valence shell?

Question # 3

I2O5is used for quantitative study of

Question # 4

Smell of halogens is:

Question # 5

Halogens are called

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

The most reactive elements are

Question # 9

Noble gases in the atmosphere are

Question # 10

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

Question # 11

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

Question # 12

Colour of bromine is

Question # 13

Which halogen has Iustrous shining?

Question # 14

Nobel gases are placed group:

Question # 15

The strongest hydrogen bond is in

Question # 16

Bleaching powder may be produced by passing chlorine over

Question # 17

Half life of most stable isotope of astatine is

Question # 18

Bleaching powder is prepared by the reaction of Cl2 with.

Question # 19

Chlorine heptoxide (Cl2O7) reacts with water to form

Question # 20

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

Question # 21

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

Question # 22

The most reactive elements are:

Question # 23

A property which differs fluorine from the other halogens?

Question # 24

Half life period of astatine is

Question # 25

Chlorin heptoxide reacts with water to form:

Question # 26

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 # 27

The noble gases are

Question # 28

Which is used as cooling medium in nuclear reactors?

Question # 29

Which has the least oxidizing power?

Question # 30

Colour of chlorine is

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ECAT Chemistry Chapter 16 Important MCQ's

Sr.# Question Answer
1 Which halogen will react spontaneously with Au(s)to produce Au3++
A. Br2
B. F2
C. I2
D. Cl2
2 Oxidation state of fluorine is:
A. +1
B. +2
C. -1
D. -2
3 Perchloric acid can be stored in solution form
A. 47%
B. 57%
C. 67%
D. 77%
4 Which is volatile liquid?
A. HF
B. HCl
C. HBr
D. Hl
5 Colour of bromine is
A. Pale yellow
B. Greenish yellow
C. Red brown
D. Greyish black
6 Which of the following hydrogen halide is the weakest acid in solution
A. HF
B. HBr
C. HI
D. HCl
7 Molecule of halogens exist as
A. Monatomic
B. Diatomic
C. Triatomi
D. Polyatomic
8 The available chlorine is bleaching power is
A. 25-30%
B. 30-35%
C. 35-40%
D. 40-45%
9 Half life of most stable isotope of astatine is
A. 8.0 hrs
B. 8.1 hrs
C. 8.2 hrs
D. 8.3 hrs
10 Bleaching powder is agent:
A. Dehydrating
B. Oxidazing
C. reducing
D. all

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