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 halogen occurs naturally in a positive oxidation state?

Question # 2

Hydrogen bond is the strongest between the molecules of:

Question # 3

Bleaching powder may be produced by passing chlorine over

Question # 4

Angle is OF2is

Question # 5

Smell of halogen is

Question # 6

Non sticking coating in cooking utensils is done by

Question # 7

Astatine belongs to group:

Question # 8

Perchloric acid can be stored in solution form

Question # 9

Noble gases are placed in group

Question # 10

Colour of fluorine gas is

Question # 11

Chlorine heptoxide (Cl2O7) reacts with water to form

Question # 12

Colour of chlorine is

Question # 13

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

Question # 14

Which is volatile liquid?

Question # 15

Gaseous HF exists in the form of

Question # 16

Oxidation state of fluorine is:

Question # 17

Oxidation state of fluorine is

Question # 18

Which is used in bacterial lamps

Question # 19

Smell of halogens is:

Question # 20

Used in tooth pastes is

Question # 21

Bleaching powder is prepared by the reaction of Cl2 with.

Question # 22

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

Question # 23

Radioactive element in halogens is

Question # 24

Which has complete valence shell?

Question # 25

The most reactive elements are:

Question # 26

Which compound of noble gas xenon can be prepared?

Question # 27

The most reactive elements are

Question # 28

Colour of bromine is

Question # 29

The strongest acid is

Question # 30

Gaseous HF exists in the form of

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ECAT Chemistry Chapter 16 Important MCQ's

Sr.# Question Answer
1 Chlorin heptoxide reacts with water to form:
A. Hypochlorous acid
B. Chloric acid
C. Perchloric acid
D. Chlorine and oxygen
2 Half life period of astatine is
A. 8.1 hrs
B. 8.2 Hrs
C. 8.3 hrs
D. 8.4 hrs
3 Astatine belongs to group:
A. I-A
B. II-A
C. III-A
D. VII-A
4 Which halogen will react spontaneously with Au(s)to produce Au3++
A. Br2
B. F2
C. I2
D. Cl2
5 Perchloric acid can be stored in solution form
A. 47%
B. 57%
C. 67%
D. 77%
6 Hydrogen bond is the strongest between the molecules of:
A. HF
B. HCl
C. HBr
D. Hl
7 Halogens are called
A. Salt former
B. Light bearing
C. Copper forming
D. none of these
8 Angle is OF2is
A. 1200
B. 1800
C. 1050
D. 1020
9 Which is the strongest acid?
A. HClO
B. HClO2
C. HClO3
D. HClO4
10 Nobel gases are placed group:
A. Group IV-A
B. Group V-A
C. Group VI-A
D. Group VII-A

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