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 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 # 2

Half life period of astatine is

Question # 3

Chlorine heptoxide (Cl2O7) reacts with water to form

Question # 4

Gaseous HF exists in the form of

Question # 5

Which is used in bacterial lamps

Question # 6

Molecule of halogens exist as

Question # 7

Half life of most stable isotope of astatine is

Question # 8

Oxidation state of fluorine is

Question # 9

Bleaching powder is prepared by the reaction of Cl2 with.

Question # 10

Which has complete valence shell?

Question # 11

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

Question # 12

Colour of bromine is

Question # 13

Colour of fluorine gas is

Question # 14

Perchloric acid can be stored in solution form

Question # 15

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

Question # 16

The compound with cyclic hexamer is

Question # 17

Smell of halogens is:

Question # 18

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

Question # 19

Which has the least oxidizing power?

Question # 20

Second most element in the universe is

Question # 21

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

Question # 22

Bleaching powder is agent:

Question # 23

I2O5is used for quantitative study of

Question # 24

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

Question # 25

Which compound of noble gas xenon can be prepared?

Question # 26

Angle is OF2is

Question # 27

Astatine belongs to group:

Question # 28

Halogens are called

Question # 29

Corrosion proof parts of machinery are prepared from

Question # 30

Colour of chlorine is

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ECAT Chemistry Chapter 16 Important MCQ's

Sr.# Question Answer
1 Which is volatile liquid?
A. HF
B. HCl
C. HBr
D. Hl
2 Gaseous HF exists in the form of
A. Monomers
B. Cyclic hexames
C. As single entity
D. Both (a) and (b)
3 Bleaching powder is prepared by the reaction of Cl2 with.
A. Lime stone
B. Lime water
C. slaked lime
D. Lime
4 Which noble gas is used in mixture used for breathing by divers?
A. Cl2
B. NH3
C. CO2
D. He
5 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
6 Which compound of noble gas xenon can be prepared?
A. Oxides
B. Fluoride
C. Oxyfluorides
D. All of these
7 Which has the least oxidizing power?
A. F2
B. Cl2
C. Br2
D. I2
8 The noble gases are
A. Mono atomio
B. Diatomic
C. Polyatomic
D. All
9 the anhydride of HCIO4is
A. CIO3
B. ClO2
C. Cl2O5
D. Cl2O7
10 The most reactive elements are
A. Group IV-A
B. Group V-A
C. Group VI-A
D. Group VII-A

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