Question # 1

The anhydride of HCIO4 is

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CIO3

CIO2

Cl2O5

Cl2O7

Bleaching powder may be produced by passing chlorine over.

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Calcium carbonate

Hydrated calcium sulphate

Anhydrous calcium sulphate

Calcium hydroxide

Bromine can be liberated from KBr solution by the action of.

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I2 solution

Chlorine

NaCl

KI

The chemical formula of Sodium Bromite is.

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NaBrO

NaBrO2

NaBrO3

NaBrO4

Which gas has highest boiling points.

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He

Ne

Ar

Kr

___________ is use as a cooling medium for nuclear reactors

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Ne

He

Ar

Kr

Hydrogen bond is the strongest between the molecules of

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HF

HCl

HBr

HI

Colour of which halogen is not correctly related.

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F2 --- colourless gas

Cl2---- greenish yellow gas

Br2----- Reddish brown liquid

I2-------- grayish Black solid

Bleaching powder contains available chlorine approximately

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100%

70-80%

35-40%

10-20%

Chlorine heptoxide (CI₂O₇) reacts with water to form

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Hypochlorous acid

Chloric acid

Perchloric acid

Chlorine and oxygen

Which one of halogens is a liquid

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F₂

Cl₂

Br₂

I₂

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

Which is the strongest acid

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HCIO

HCIO₂

HCIO₃

HCIO₄

Bleaching powder may be produced by passing chlorine over

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calcium carbonate

hydrated calcium sulphate

calcium hydroxide

magnesium hydroxide

Which one of the following noble gases is least polarizable

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He

Ne

Ar

Kr

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

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