ECAT Pre Engineering Chemistry Chapter 16 MCQ Test With Answer

Question # 1

Which is volatile liquid?

HF A
HCl B
HBr C
Hl D

Question # 2

Which halogen has Iustrous shining?

F₂ A
Cl₂ B
Br₂ C
I₂ D

Question # 3

Halogens are called.

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

Question # 4

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

F₂ A
Cl₂ B
Br₂ C
I₂ D

Question # 5

Astatine belongs to group:

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

Question # 6

Gaseous HF exists in the form of

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

Question # 7

Which has the least oxidizing power?

F₂ A
Cl₂ B
Br₂ C
I₂ D

Question # 8

The noble gases are

Mono atomio A
Diatomic B
Polyatomic C
All D

Question # 9

Used in tooth pastes is

Fluorides A
Iodides B
halides C
nitrides D

Question # 10

The most reactive elements are:

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

Question # 11

Colour of chlorine is

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

Question # 12

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?

s²p² A
s²p⁴ B
s²p⁵ C
s²p⁶ D

Question # 13

Hydrogen bond is the strongest between the molecules of:

HF A
HCl B
HBr C
Hl D

Question # 14

Colour of fluorine gas is

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

Question # 15

Corrosion proof parts of machinery are prepared from

Iron A
Copper B
Plastic C
Teflon D

Question # 16

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 # 17

the anhydride of HCIO₄is

CIO₃ A
ClO₂ B
Cl₂O₅ C
Cl₂O₇ D

Question # 18

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

HF A
HBr B
HI C
HCl 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

The compound with cyclic hexamer is

HF A
HCl B
HBr C
HI D

Question # 21

Which has complete valence shell?

C A
N B
O C
Ne D

Question # 22

The available chlorine is bleaching power is

25-30% A
30-35% B
35-40% C
40-45% D

Question # 23

Which is used in bacterial lamps

He A
Ne B
Ar C
Kr D

Question # 24

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

Br2 A
F2 B
I2 C
Cl2 D

Question # 25

Which halogen occurs naturally in a positive oxidation state?

Fluorine A
Chlorine B
Bromine C
Iodine D

Question # 26

Nobel gases are placed group:

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

Question # 27

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

an alkali metal A
a transition element B
a noble gas C
a halogen D

Question # 28

Noble gases in the atmosphere are

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

Question # 29

Radioactive element in halogens is

Astatine A
bromine B
Iodine C
Fluorine D

Question # 30

The strongest acid is

HF A
HCl B
HBr C
HI D

Sr.#	Question	Answer
1	Colour of fluorine gas is	A. Pale yellow B. Greenish yellow C. Red brown D. greyish black
2	Corrosion proof parts of machinery are prepared from	A. Iron B. Copper C. Plastic D. Teflon
3	Which is volatile liquid?	A. HF B. HCl C. HBr D. Hl
4	The strongest acid is	A. HF B. HCl C. HBr D. HI
5	The most reactive elements are:	A. Group IV-A B. Group V-A C. Group VI-A D. Group VII -A
6	Nobel gases are placed group:	A. Group IV-A B. Group V-A C. Group VI-A D. Group VII-A
7	Gaseous HF exists in the form of	A. Monomers B. Cyclic hexames C. As single entity D. Both (a) and (b)
8	Colour of chlorine is	A. Pale yellow B. Greenish yellow C. Red brown D. Greyish black
9	Which halogen occurs naturally in a positive oxidation state?	A. Fluorine B. Chlorine C. Bromine D. Iodine
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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