Question # 1

Time required to deposit one millimole of aluminium metal by the passage of 9.65 amperes through molten electrolyte containing aluminium ion is

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30 s

10 s

30,000 s

10,000 s

The percentage of carbon in different types of iron products is in the order of:

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Cast iron > wrought iron > steel

wrought iron > steel > cast rion

Cast iron > steel > wrought iron

Cast iron = steel > wrought iron

Compounds having the same molecular formula, but different functional groups show

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Metamerism

Position isomerism

Chain isomerism

Functional group isomerism

Carbon monoxide is pollutant as it

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Inactivates nerves

Inhibits glycolysis

Combines with oxygen

Combines with hemoglobin

Which of the following is an electrophile

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Bromine

KBr

NH₃

Benzene

Which of the following compound is industrially prepared by the electrolysis of solution of NaCl

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Na₂CO₃

NaHCO3

NaOH

NaOCl

Which of the following compounds will react with reagent ?

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CH₃ CO H

CH₃ CO CH₃

CH_{3 COOH}

CH₃CO CH₂CH₃

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Total pressure

Amount of A₂and B₂

Temperature

Catalyst

Caroxyl group has functional in it.

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one

two

three

four

A carboxylic acid with one caboxyl group:

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Monocarboxylic acid

Dicarboxylic acid

Tricarboxylic acid

Polycarboxylic acid

The rate equation for a reaction is Rate =k[A]. what are unit of K ?

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Mole-1 dm³ S^-1

Mole dm³ S^-1

Moledm³

S^-1

Optical activity is possible in

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Oxalic acid

Acetic acid

Tartaric acid

Formic acid

Ethyl acetate reacts with CH₃MgBr to form

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Secondary alcohol

Tertiary alcohol

Primary alcohol and acid

Acid

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1-bromobutane

2-bromobutane

1-bromo-2-methyl propane

2-bromo-2-methyl propane

Which following derivative cannot be prepared directly from acetic acid?

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Acetamide

Acetyl chloride

Acetic anhdride

Ethyl acetate

Hydrolytic reaction of fats by causic soda is known as

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Acetylation

Carboxylation

Esterification

Saponification

Acetic acid is 1.33% ionized, In 1000 molecules of 0.1 M acetic acid the number of H⁺ions is

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1.33

13.3

1.33

1

The atomic mass is measured in atomic mass unit (a.m.u.) which is equal to

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1.661 x 10^{-27- Kg}

1.661 x 10^-24Kg

1.661 x 10^{-27- g}

1.661 x 10^-24mg

Which statement about Arrhenius equation is incorrect

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Factor 'A' called Arrhenius constant depends upon collision frequency of reactants

Rate of reaction increase by increasing temperature

Rate constant k is increased

Activation energy Ea is decreased by rise in temperature

Alkenes normally have ______ geometry

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Tetrachedral

Linear

Planer

None

If an electrophile attacks then ______ bond breaks first

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C - H

O - H

C - O

None of these

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 K₂Cr₂O₇and H₂SO₄

Benzene is obtained from benzene sulphonic acid by treating with

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HCl

NaOH

H₂O

NaHCO₃

Reduction of alkyl halides give

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Alkanes

Alkenes

Ketones

Ether

Molecules of High molecular weight usually greater than 10,000 are called:

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Macro molecules

Mega molecules

Poly molecules

Gega molecules

The sum of mole fractions (X) of components of solution is equal to

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100

200

One

Zero

The solutions of NaCl and KCl are prepared separately by dissolving same amount of solute in water, which of the following statements is true fro these solutions ?

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KCl solution will have higher boiling point than NaCl solution.

Both the solutions have same boiling points.

KCl and NaCl solutions possess same vapour pressure.

KCl solution possesses lower freezing point than NaCl solution.

The most reactive compound for electrophilic nitration will be

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Benzyl chloride

Benzoic acid

Nitrobenzene

Chlorobenzene

Which decolourizes the colour of Br₃

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CH₄

CH_3-CH₃

CH_3-CH_3-CH₃

CH₂₌CH₂

The ore CaSO₄2H₂O has the general name

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Gypsum

Dolomite

Calcite

Epsom salt

K_avalue of HF acid is 6.7 x 10^-15the acid is a

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Weak acid

Moderately strong acid

Strong acid

Very weak acid

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