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

Bleaching powder is prepared by the reaction of Cl2 with.

Question # 2

I2O5is used for quantitative study of

Question # 3

Which is used as cooling medium in nuclear reactors?

Question # 4

Which compound of noble gas xenon can be prepared?

Question # 5

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

Question # 6

Which halogen has Iustrous shining?

Question # 7

Half life of most stable isotope of astatine is

Question # 8

Radioactive element in halogens is

Question # 9

Which is used in arc welding and cutting?

Question # 10

Chlorine heptoxide (Cl2O7) reacts with water to form

Question # 11

The noble gases are

Question # 12

The most reactive elements are:

Question # 13

Astatine belongs to group:

Question # 14

Corrosion proof parts of machinery are prepared from

Question # 15

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

Question # 16

Non sticking coating in cooking utensils is done by

Question # 17

Noble gases are placed in group

Question # 18

The most reactive elements are

Question # 19

Angle is OF2is

Question # 20

Gaseous HF exists in the form of

Question # 21

Colour of chlorine is

Question # 22

Hydrogen bond is the strongest between the molecules of

Question # 23

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 # 24

Halogens are called.

Question # 25

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

Question # 26

The strongest acid is

Question # 27

Which has complete valence shell?

Question # 28

Perchloric acid can be stored in solution form

Question # 29

Oxidation state of fluorine is:

Question # 30

A property which differs fluorine from the other halogens?

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ECAT Chemistry Chapter 16 Important MCQ's

Sr.# Question Answer
1 Gaseous HF exists in the form of
A. Monomers
B. Cyclic hexamers
C. As single entity
D. Both a and b
2 Colour of bromine is
A. Pale yellow
B. Greenish yellow
C. Red brown
D. Greyish black
3 Oxidation state of fluorine is:
A. +1
B. +2
C. -1
D. -2
4 Chlorin heptoxide reacts with water to form:
A. Hypochlorous acid
B. Chloric acid
C. Perchloric acid
D. Chlorine and oxygen
5 Which is present as a result of radioactive decay on earth?
A. He
B. Ne
C. Ar
D. Kr
6 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
7 Corrosion proof parts of machinery are prepared from
A. Iron
B. Copper
C. Plastic
D. Teflon
8 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?
A. s2p2
B. s2p4
C. s2p5
D. s2p6
9 Which is the strongest acid?
A. HClO
B. HClO2
C. HClO3
D. HClO4
10 Chlorine heptoxide (Cl2O7) reacts with water to form
A. Hypochlorous acid
B. chloric acid
C. Perchloric acid
D. Chlorine and Oxygen

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