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

Oxidation state of fluorine is:

Question # 2

Astatine belongs to group

Question # 3

Colour of bromine is

Question # 4

Noble gases in the atmosphere are

Question # 5

Which halogen has Iustrous shining?

Question # 6

Second most element in the universe is

Question # 7

Bleaching powder is agent:

Question # 8

The only non-metal in liquid form is

Question # 9

The most reactive elements are:

Question # 10

Which compound of noble gas xenon can be prepared?

Question # 11

Non sticking coating in cooking utensils is done by

Question # 12

Bleaching powder may be produced by passing chlorine over

Question # 13

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

Question # 14

Smell of halogen is

Question # 15

Gaseous HF exists in the form of

Question # 16

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

Question # 17

Which is the strongest acid?

Question # 18

Which is used in arc welding and cutting?

Question # 19

Which halogen occurs naturally in a positive oxidation state?

Question # 20

Molecule of halogens exist as

Question # 21

I2O5is used for quantitative study of

Question # 22

Which is used in bacterial lamps

Question # 23

Colour of Iodine is

Question # 24

Halogens are called

Question # 25

The strongest hydrogen bond is in

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

Chlorin heptoxide reacts with water to form:

Question # 28

Colour of fluorine gas is

Question # 29

Angle is OF2is

Question # 30

Hydrogen bond is the strongest between the molecules of:

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ECAT Chemistry Chapter 16 Important MCQ's

Sr.# Question Answer
1 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
2 Chlorine heptoxide (Cl2O7) reacts with water to form
A. Hypochlorous acid
B. chloric acid
C. Perchloric acid
D. Chlorine and Oxygen
3 Smell of halogens is:
A. Fruity
B. Sweet
C. Irritating
D. Rotten egg
4 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
5 Halogens are called.
A. salt former
B. Light bearing
C. copper forming
D. None of these
6 Astatine belongs to group
A. I-A
B. II-A
C. III-A
D. VII-A
7 A property which differs fluorine from the other halogens?
A. Direct combination with inert gases
B. Uninegative
C. Diatomic
D. ns2 , np5
8 Half life period of astatine is
A. 8.1 hrs
B. 8.2 Hrs
C. 8.3 hrs
D. 8.4 hrs
9 Which of the following hydrogen halide is the weakest acid in solution
A. HF
B. HBr
C. HI
D. HCl
10 Molecule of halogens exist as
A. Monatomic
B. Diatomic
C. Triatomi
D. Polyatomic

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