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

Perchloric acid can be stored in solution form

Question # 2

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

Question # 3

The available chlorine is bleaching power is

Question # 4

Gaseous HF exists in the form of

Question # 5

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

Question # 6

The most reactive elements are

Question # 7

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 # 8

The strongest acid is

Question # 9

Noble gases are placed in group

Question # 10

Oxidation state of fluorine is

Question # 11

Which compound of noble gas xenon can be prepared?

Question # 12

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

Question # 13

Which halogen has Iustrous shining?

Question # 14

Chlorin heptoxide reacts with water to form:

Question # 15

Which is used in bacterial lamps

Question # 16

Smell of halogen is

Question # 17

Radioactive element in halogens is

Question # 18

Half life period of astatine is

Question # 19

the anhydride of HCIO4is

Question # 20

Gaseous HF exists in the form of

Question # 21

Hydrogen bond is the strongest between the molecules of:

Question # 22

Which is volatile liquid?

Question # 23

Smell of halogens is:

Question # 24

The strongest hydrogen bond is in

Question # 25

Hydrogen bond is the strongest between the molecules of

Question # 26

A property which differs fluorine from the other halogens?

Question # 27

Bleaching powder is prepared by the reaction of Cl2 with.

Question # 28

Used in tooth pastes is

Question # 29

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

Question # 30

Non sticking coating in cooking utensils is done by

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ECAT Chemistry Chapter 16 Important MCQ's

Sr.# Question Answer
1 Which of the following hydrogen halide is the weakest acid in solution?
A. HF
B. HBr
C. Hl
D. HCl
2 Non sticking coating in cooking utensils is done by
A. Iron
B. Cooper
C. Plastic
D. Teflon
3 Noble gases in the atmosphere are
A. 4%
B. 3%
C. 2%
D. 1%
4 Which is used as cooling medium in nuclear reactors?
A. He
B. Ne
C. Ar
D. Kr
5 the anhydride of HCIO4is
A. CIO3
B. ClO2
C. Cl2O5
D. Cl2O7
6 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
7 Gaseous HF exists in the form of
A. Monomers
B. Cyclic hexames
C. As single entity
D. Both (a) and (b)
8 Bleaching powder is agent:
A. Dehydrating
B. Oxidazing
C. reducing
D. all
9 Colour of Iodine is
A. Pale yellow
B. Greenish yellow
C. Red brown
D. Greyish black
10 Which is used in bacterial lamps
A. He
B. Ne
C. Ar
D. Kr

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