Question # 1

Bleaching powder contains available chlorine approximately

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100%

70-80%

35-40%

10-20%

Which is the second most abundant element in the universe

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H

He

CO

C

Which one is chlorous acid

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HCIO

HCIO₂

HCIO₃

HCIO₄

Which one of the following uses is not correctly related with the halogen.

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fluorine -------- Teflon

Chlorine ---------Bleaching powder

Bromine ---------------PVC plastics

Iodine -----------Iodex

Bleaching powder may be produced by passing chlorine over.

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Calcium carbonate

Hydrated calcium sulphate

Anhydrous calcium sulphate

Calcium hydroxide

Which one of the following is not use of chlorine.

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Formation PVC

Formation of mustard gas

Disinfectant and bleaching agent

Formation of sodium chloride

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

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Br₂

F₂

I₂

Cl₂

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

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HF

HBr

HI

HCl

Chlorine heptoxide (CI₂O₇) reacts with water to form

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Hypochlorous acid

Chloric acid

Perchloric acid

Chlorine and oxygen

Bleaching powder may be produced by passing chlorine over

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calcium carbonate

hydrated calcium sulphate

calcium hydroxide

magnesium hydroxide

Iodine deficiency in diet is known to cause.

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Beri Beri

Goiter

Rickets

Night blindness

What is the oxidation state of Xenon in XeOF2

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0

+2

+4

+6

Hydrogen bond is the strongest between the molecules of.

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HF

HCl

HBr

HI

Which substance is used in photography

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AgCl

AgBr

AgI

Ag3PO4

Which one of halogens is a liquid

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F₂

Cl₂

Br₂

I₂

Which element form maximum compounds with Xenon

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F

Cl

Br

I

Hydrogen bond is the strongest between the molecules of

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HF

HCl

HBr

HI

Which statement is correct about the given reaction.

2NaOH + Cl2 --------------- NaCl + NaCIO + H2O

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Cl is oxidized and O is reduced

Cl is reduced and O is oxidized

Cl is oxidized as well as reduced

Neither Cl nor oxygen is reduced or oxidized

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