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 has the least oxidizing power?

Question # 2

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

Question # 3

Smell of halogens is:

Question # 4

I2O5is used for quantitative study of

Question # 5

Which compound of noble gas xenon can be prepared?

Question # 6

Which is used in bacterial lamps

Question # 7

The most reactive elements are:

Question # 8

Bleaching powder is agent:

Question # 9

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

Question # 10

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

Question # 11

Perchloric acid can be stored in solution form

Question # 12

Bleaching powder is prepared by the reaction of Cl2 with.

Question # 13

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 # 14

Chlorin heptoxide reacts with water to form:

Question # 15

Gaseous HF exists in the form of

Question # 16

Radioactive element in halogens is

Question # 17

Half life period of astatine is

Question # 18

Which is used in arc welding and cutting?

Question # 19

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

Question # 20

Smell of halogen is

Question # 21

Which is volatile liquid?

Question # 22

Which is the strongest acid?

Question # 23

The compound with cyclic hexamer is

Question # 24

Colour of Iodine is

Question # 25

Molecule of halogens exist as

Question # 26

Gaseous HF exists in the form of

Question # 27

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

Question # 28

Chlorine heptoxide (Cl2O7) reacts with water to form

Question # 29

Colour of fluorine gas is

Question # 30

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

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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 Oxidation state of fluorine is:
A. +1
B. +2
C. -1
D. -2
3 Corrosion proof parts of machinery are prepared from
A. Iron
B. Copper
C. Plastic
D. Teflon
4 Astatine belongs to group:
A. I-A
B. II-A
C. III-A
D. VII-A
5 Hydrogen bond is the strongest between the molecules of:
A. HF
B. HCl
C. HBr
D. Hl
6 The compound with cyclic hexamer is
A. HF
B. HCl
C. HBr
D. HI
7 Half life period of astatine is
A. 8.1 hrs
B. 8.2 Hrs
C. 8.3 hrs
D. 8.4 hrs
8 Which halogen occurs naturally in a positive oxidation state?
A. Fluorine
B. Chlorine
C. Bromine
D. Iodine
9 Radioactive element in halogens is
A. Astatine
B. bromine
C. Iodine
D. Fluorine
10 Which is the strongest acid?
A. HClO
B. HClO2
C. HClO3
D. HClO4

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