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

The strongest acid is

Question # 2

Angle is OF2is

Question # 3

Oxidation state of fluorine is:

Question # 4

I2O5is used for quantitative study of

Question # 5

Perchloric acid can be stored in solution form

Question # 6

Gaseous HF exists in the form of

Question # 7

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

Question # 8

Non sticking coating in cooking utensils is done by

Question # 9

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

Question # 10

the anhydride of HCIO4is

Question # 11

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

Question # 12

Gaseous HF exists in the form of

Question # 13

Which is the strongest acid?

Question # 14

Hydrogen bond is the strongest between the molecules of

Question # 15

Second most element in the universe is

Question # 16

Astatine belongs to group

Question # 17

Colour of chlorine is

Question # 18

Bleaching powder is agent:

Question # 19

Bleaching powder is prepared by the reaction of Cl2 with.

Question # 20

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

Question # 21

Hydrogen bond is the strongest between the molecules of:

Question # 22

Noble gases in the atmosphere are

Question # 23

Halogens are called.

Question # 24

Molecule of halogens exist as

Question # 25

Which is used in arc welding and cutting?

Question # 26

Oxidation state of fluorine is

Question # 27

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 # 28

Chlorin heptoxide reacts with water to form:

Question # 29

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

Question # 30

The strongest hydrogen bond is in

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ECAT Class Chemistry Chapter 16 Important MCQ's

Sr.# Question Answer
1 Chlorine heptoxide (Cl2O7) reacts with water to form
A. Hypochlorous acid
B. chloric acid
C. Perchloric acid
D. Chlorine and Oxygen
2 Which halogen has maximum Van-der Waal's forces?
A. F2
B. Cl2
C. Br2
D. I2
3 Colour of Iodine is
A. Pale yellow
B. Greenish yellow
C. Red brown
D. Greyish black
4 Corrosion proof parts of machinery are prepared from
A. Iron
B. Copper
C. Plastic
D. Teflon
5 Radioactive element in halogens is
A. Astatine
B. bromine
C. Iodine
D. Fluorine
6 A property which differs fluorine from the other halogens?
A. Direct combination with inert gases
B. Uninegative
C. Diatomic
D. ns2 , np5
7 Bleaching powder is agent:
A. Dehydrating
B. Oxidazing
C. reducing
D. all
8 Colour of fluorine gas is
A. Pale yellow
B. Greenish yellow
C. Red brown
D. greyish black
9 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
10 Which of the following hydrogen halide is the weakest acid in solution?
A. HF
B. HBr
C. Hl
D. HCl

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