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

Radioactive element in halogens is

Question # 2

Hydrogen bond is the strongest between the molecules of:

Question # 3

Which halogen occurs naturally in a positive oxidation state?

Question # 4

The most reactive elements are:

Question # 5

The noble gases are

Question # 6

Half life period of astatine is

Question # 7

Chlorine heptoxide (Cl2O7) reacts with water to form

Question # 8

Colour of bromine is

Question # 9

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

Question # 10

Perchloric acid can be stored in solution form

Question # 11

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

Question # 12

Bleaching powder is prepared by the reaction of Cl2 with.

Question # 13

The most reactive elements are

Question # 14

Which is used in bacterial lamps

Question # 15

Noble gases in the atmosphere are

Question # 16

The compound with cyclic hexamer is

Question # 17

Half life of most stable isotope of astatine is

Question # 18

Astatine belongs to group

Question # 19

Smell of halogen is

Question # 20

Oxidation state of fluorine is:

Question # 21

Smell of halogens is:

Question # 22

Which is used as cooling medium in nuclear reactors?

Question # 23

The strongest acid is

Question # 24

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

Question # 25

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

Question # 26

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

Question # 27

The strongest hydrogen bond is in

Question # 28

Chlorin heptoxide reacts with water to form:

Question # 29

Nobel gases are placed group:

Question # 30

Halogens are called

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ECAT Chemistry Chapter 16 Important MCQ's

Sr.# Question Answer
1 The available chlorine is bleaching power is
A. 25-30%
B. 30-35%
C. 35-40%
D. 40-45%
2 Which has the least oxidizing power?
A. F2
B. Cl2
C. Br2
D. I2
3 The compound with cyclic hexamer is
A. HF
B. HCl
C. HBr
D. HI
4 I2O5is used for quantitative study of
A. CO2
B. NO2
C. NO
D. CO
5 Chlorin heptoxide reacts with water to form:
A. Hypochlorous acid
B. Chloric acid
C. Perchloric acid
D. Chlorine and oxygen
6 the anhydride of HCIO4is
A. CIO3
B. ClO2
C. Cl2O5
D. Cl2O7
7 An element that has a high ionization energy and tends to be chemically inactive would most likely to be
A. an alkali metal
B. a transition element
C. a noble gas
D. a halogen
8 Which halogen has Iustrous shining?
A. F2
B. Cl2
C. Br2
D. I2
9 Astatine belongs to group
A. I-A
B. II-A
C. III-A
D. VII-A
10 Non sticking coating in cooking utensils is done by
A. Iron
B. Cooper
C. Plastic
D. Teflon

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