FSC Chemistry MCQs Chapter 5 Class 12 - PLS Prep by PakLearningSpot

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Created on February 10, 2022

Chemistry Ch 5 Class 12

1 / 25

The halogens are known as:

Salt formers

Rare earth elements

Alkali metals

Noble gases

2 / 25

Which of the following is a result of reaction between Iodine and Oxygen?

Iodine Hexaoxide

Iodine Pentaoxide

Iodine Dioxide

Iodine Heptaoxide

3 / 25

Electrons are most loosely bound in which of the following halogen?

Iodine

Bromine

Chlorine

Fluorine

4 / 25

Which of the following can be bleached using Bleaching power?

Cotton

Wool

Silk

All of these

5 / 25

Which of the following is the highest oxidizing agent?

Cl2

Br2

6 / 25

) Which halogen is present in Teflon?

Chlorine

Bromine

Fluorine

Iodine

7 / 25

Noble gasses have?

High ionization energ

Zero ionization Energy

Low ionization energy d)

None of these

8 / 25

Sulfur with HI acts as a:

Strong oxidizing agent

Strong reducing agent

Weak oxidizing agent

Weak reducing agent

9 / 25

What is the chief ore of fluorine?

Cryolite

Fluorspar

Dolomite

Both a and b

10 / 25

Percentage of Chlorine present In bleaching powder Is:

5-10

20-25

35- 40

11 / 25

The reduction of which of the following produces Hydrofluoric acid?

a) XeF2

XeF4

Xe F6

All of the above

12 / 25

Bleaching powder is agent?

Oxidizing

Reducing

Both a and b

None of these

13 / 25

Which of the following is bleaching powder’s formula?

Ca(CI0)4

Ca2(CI0)2

Ca (CI0)2

Ca (CI20)2

14 / 25

Which of the following is a component of TEAR GAS:

Bromine

Fluorine

Chlorine

Argon

15 / 25

From the following which is used as bleaching agent

Flourine

Chlorine

Bromine

Iodine

16 / 25

Which halogen is used as a refrigerant?

17 / 25

is used in electric light bulbs, in fluorescent tubes, in radio tubes and Geiger counters

Radon

Neon

Argon

Both a and b

18 / 25

Oxides of xenon are formed from:

XeF6

XeF4

XeF2

All of these

19 / 25

Fluorine Is reactive due to its:

Low Ionization potential

Low dissociation energy

Low electro negativity

Large size

20 / 25

Which of the following show halogens?

F to At

N to CH

C to Sn

H to Cs.

21 / 25

Which of the following has highest boiling point?

22 / 25

Which of the following is the formula of Potassium permanganate?

KMnO4

K2Mn0

KMn02

None of these

23 / 25

The order of decreasing power as an oxidizing agent is

F2> Br2> Cl2>I2

F2 > O2> Br2 > I2

F2 < O2 < Br2 < I2

F2 < Br2< C12 <I2

24 / 25

Which of the following halogen does not form stable oxyacids?

25 / 25

What is the heat of vaporization of radon?

1.77

9.7

18.0

6.5

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The average score is 59%

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