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

Molecule of halogens exist as

Question # 2

The most reactive elements are:

Question # 3

the anhydride of HCIO4is

Question # 4

The strongest hydrogen bond is in

Question # 5

Gaseous HF exists in the form of

Question # 6

Oxidation state of fluorine is:

Question # 7

Colour of Iodine is

Question # 8

Astatine belongs to group

Question # 9

The most reactive elements are

Question # 10

Chlorin heptoxide reacts with water to form:

Question # 11

Non sticking coating in cooking utensils is done by

Question # 12

Which is used in arc welding and cutting?

Question # 13

Noble gases are placed in group

Question # 14

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

Question # 15

Astatine belongs to group:

Question # 16

Angle is OF2is

Question # 17

Chlorine heptoxide (Cl2O7) reacts with water to form

Question # 18

Which has the least oxidizing power?

Question # 19

Bleaching powder is prepared by the reaction of Cl2 with.

Question # 20

Which is the strongest acid?

Question # 21

Smell of halogens is:

Question # 22

Colour of bromine is

Question # 23

The strongest acid is

Question # 24

Which is used in bacterial lamps

Question # 25

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

Question # 26

Bleaching powder may be produced by passing chlorine over

Question # 27

The only non-metal in liquid form is

Question # 28

Which halogen has Iustrous shining?

Question # 29

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

Question # 30

The available chlorine is bleaching power is

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ECAT Chemistry Chapter 16 Important MCQ's

Sr.# Question Answer
1 Bleaching powder may be produced by passing chlorine over
A. Calcium carbonate
B. Hydrated calcium sulphate
C. Anhydrous calcium sulphate
D. Calcium hydroxide
2 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
3 Corrosion proof parts of machinery are prepared from
A. Iron
B. Copper
C. Plastic
D. Teflon
4 Bleaching powder is prepared by the reaction of Cl2 with.
A. Lime stone
B. Lime water
C. slaked lime
D. Lime
5 The compound with cyclic hexamer is
A. HF
B. HCl
C. HBr
D. HI
6 Bleaching powder is agent:
A. Dehydrating
B. Oxidazing
C. reducing
D. all
7 Perchloric acid can be stored in solution form
A. 47%
B. 57%
C. 67%
D. 77%
8 Hydrogen bond is the strongest between the molecules of
A. HF
B. HCl
C. HBr
D. HI
9 Which of the following hydrogen halide is the weakest acid in solution?
A. HF
B. HBr
C. Hl
D. HCl
10 Half life period of astatine is
A. 8.1 hrs
B. 8.2 Hrs
C. 8.3 hrs
D. 8.4 hrs

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