ECAT Pre Engineering Chemistry Chapter 16 MCQ Test With Answer

Question # 1

The compound with cyclic hexamer is

HF A
HCl B
HBr C
HI D

Question # 2

Gaseous HF exists in the form of

Monomers A
Cyclic hexamers B
As single entity C
Both a and b D

Question # 3

Gaseous HF exists in the form of

Monomers A
Cyclic hexames B
As single entity C
Both (a) and (b) D

Question # 4

Molecule of halogens exist as

Monatomic A
Diatomic B
Triatomi C
Polyatomic D

Question # 5

Which has complete valence shell?

C A
N B
O C
Ne D

Question # 6

The noble gases are

Mono atomio A
Diatomic B
Polyatomic C
All D

Question # 7

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

F₂ A
Cl₂ B
Br₂ C
I₂ D

Question # 8

Second most element in the universe is

He A
Ne B
Ar C
Kr D

Question # 9

Colour of fluorine gas is

Pale yellow A
Greenish yellow B
Red brown C
greyish black D

Question # 10

Which is the strongest acid?

HClO A
HClO₂ B
HClO₃ C
HClO₄ D

Question # 11

Which compound of noble gas xenon can be prepared?

Oxides A
Fluoride B
Oxyfluorides C
All of these D

Question # 12

The only non-metal in liquid form is

S A
Cl B
Br C
P D

Question # 13

Which is used as cooling medium in nuclear reactors?

He A
Ne B
Ar C
Kr D

Question # 14

The strongest hydrogen bond is in

HF A
HCl B
HBr C
Hl D

Question # 15

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

HF A
HBr B
Hl C
HCl D

Question # 16

Chlorine heptoxide (Cl2O7) reacts with water to form

Hypochlorous acid A
chloric acid B
Perchloric acid C
Chlorine and Oxygen D

Question # 17

Nobel gases are placed group:

Group IV-A A
Group V-A B
Group VI-A C
Group VII-A D

Question # 18

The most reactive elements are

Group IV-A A
Group V-A B
Group VI-A C
Group VII-A D

Question # 19

Half life period of astatine is

8.1 hrs A
8.2 Hrs B
8.3 hrs C
8.4 hrs D

Question # 20

Noble gases in the atmosphere are

4% A
3% B
2% C
1% D

Question # 21

Smell of halogens is:

Fruity A
Sweet B
Irritating C
Rotten egg D

Question # 22

Halogens are called.

salt former A
Light bearing B
copper forming C
None of these D

Question # 23

Half life of most stable isotope of astatine is

8.0 hrs A
8.1 hrs B
8.2 hrs C
8.3 hrs D

Question # 24

Used in tooth pastes is

Fluorides A
Iodides B
halides C
nitrides D

Question # 25

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

Cl₂ A
NH₃ B
CO₂ C
He D

Question # 26

Bleaching powder is agent:

Dehydrating A
Oxidazing B
reducing C
all D

Question # 27

Smell of halogen is

Fruity A
Sweet B
Irritating C
Rotten egg D

Question # 28

Hydrogen bond is the strongest between the molecules of:

HF A
HCl B
HBr C
Hl D

Question # 29

the anhydride of HCIO₄is

CIO₃ A
ClO₂ B
Cl₂O₅ C
Cl₂O₇ D

Question # 30

Astatine belongs to group

I-A A
II-A B
III-A C
VII-A D

Sr.#	Question	Answer
1	Halogens are called.	A. salt former B. Light bearing C. copper forming D. None of these
2	Hydrogen bond is the strongest between the molecules of	A. HF B. HCl C. HBr D. HI
3	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
4	Which halogen has Iustrous shining?	A. F₂ B. Cl₂ C. Br₂ D. I₂
5	Chlorin heptoxide reacts with water to form:	A. Hypochlorous acid B. Chloric acid C. Perchloric acid D. Chlorine and oxygen
6	Noble gases are placed in group	A. Group IV-A B. Group V-A C. Group VI-A D. Group VII-A
7	Colour of fluorine gas is	A. Pale yellow B. Greenish yellow C. Red brown D. greyish black
8	The strongest hydrogen bond is in	A. HF B. HCl C. HBr D. Hl
9	Which noble gas is used in mixture used for breathing by divers?	A. Cl₂ B. NH₃ C. CO₂ D. He
10	The compound with cyclic hexamer is	A. HF B. HCl C. HBr D. HI

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ECAT Pre Engineering Chemistry Chapter 16 MCQ Test With Answer

MCQ's Test For ECAT Chemistry Chapter 16 The Halogens and The Noble Gases

ECAT Chemistry Chapter 16 The Halogens and The Noble Gases

The compound with cyclic hexamer is

Gaseous HF exists in the form of

Gaseous HF exists in the form of

Molecule of halogens exist as

Which has complete valence shell?

The noble gases are

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

Second most element in the universe is

Colour of fluorine gas is

Which is the strongest acid?

Which compound of noble gas xenon can be prepared?

The only non-metal in liquid form is

Which is used as cooling medium in nuclear reactors?

The strongest hydrogen bond is in

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

Chlorine heptoxide (Cl2O7) reacts with water to form

Nobel gases are placed group:

The most reactive elements are

Half life period of astatine is

Noble gases in the atmosphere are

Smell of halogens is:

Halogens are called.

Half life of most stable isotope of astatine is

Used in tooth pastes is

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

Bleaching powder is agent:

Smell of halogen is

Hydrogen bond is the strongest between the molecules of:

the anhydride of HCIO4is

Astatine belongs to group

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the anhydride of HCIO₄is