Question # 1

What happens when CCl₄is treated with AgNO₃solution?

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NO₂will be evolved

A white ppt. of AgCl will form

CCl₄will dissolve in AgNO₃solution

Nothing will happen

Addition of iron fillings to CuSO₄solution caused precipitation of Cu owing to the

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Reduction of Cu²⁺

Oxidation of Cu²⁺

Reduction of Fe

Reduction of Fe³⁺

Mild oxidation of glycerol with H₂O₂/FeSO_{4 gives}

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Glyceraldehyde

Dihydroxy acetone

Glycerose

None

Ethyl alcohol is industrially prepare from ethylene by

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Permanganate oxidation

Catalytic reduction

Absorbing in H₂SO₄followed by hydrolysis

Fermentation

If N_Ais Avogadro's number, then number of valence electrons in 4.2 g of nitride ions N^3-is

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2.4 N_A

4.2 N_A

1.6 N_A

3.2 N_A

Toluene can be oxidized to benzoic acid by

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KMnO₄(alk)

K₂Cr₂O₇(acidic)

Both

None

A solution of sodium sulphate was electrolysed using some inert electrodes. The products at the electrodes are

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O_2,H₂

O_2,Na

O_2,SO₂

O_2,S_2O^2-₈

As a fixing agent in photography, sodium thisoulphate is used for

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Dissolving out unreacted silver bromide

Converting silver halides to metallic silver

Reducing solubility of AgBr

Preventing overdeveloping and fogging.

Oleum is

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Castor oil

Oil of vitriol

Fuming of H₂SO₄

None of them

White lead is

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Basic lead acetate

Acidic lead carbonate

Basic lead carbonate

Basic lead hydroxide

Which one of the following compounds does not exist?

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NCl₅

AsF₅

SbCl₅

PF₅

Which of the following is different from the other three oxides?

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MgO

SnO

ZnO

Cr₂O₃

Which of the following mineral does not contain Al?

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Cryolite

Mica

Feldspar

Fluorspar

Pollutant of automobile exhausts that affects nervous system/produces mental diseases is

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Mercury

Lead

Nitrogen oxide

Sulphur oxide

Formic acid is obtained when

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Calcium acetate is heated with conc. H₂SO₄

Calcium formate is heated with calcium acetate

Glycerol is heated with oxalic acid

Acetaldehyde is oxidized with K2Cr₂O₇ and H₂SO₄

Reaction of acids with alcohols is also known as

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Esterification

Saponification

Alkalization

None

In which molecule carbon atom is sp²hybridized

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CH₄

C2H₄

C₂H₂

None of the above

Ionic solids with defects, contain

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Equal number of cation and anion vacancies

Interstitial anions and anion vacancies

Cation vacancies only

Cation vacancies and interstitial cations

The formula of nitre is

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KNO₃

NANO₂

NaCl

Na₂CO₃

Octane number can be changed by

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Isomerisation

alkylation

Cyclisation

All of these

The percentage of oxygen in NaOH is

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40

60

8

10

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