Question # 1

Calcium acetate when dry distilled gives

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Formaldehyde

Acetaldehyde

Acetone

Acetic anhydride

A cell constant is generally found by measuring the conductivity of aqueous solution of

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BaCI₂

KCI

NaCI

MgCI₂

Which one is primary alcohol?

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Buten-2-oI

Propan-2-oI

Butane-1-oI

2,3-Dimethylhexane-4-oI

The relative rate of diffusion of a gas (molecular wright - 128) as compared to oxygen is

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2 times

1/4

1/8

1/2

Ammonia gas used directly as a fertilizer is injected into the soil at a depth of about

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Two inches

Three inches

Five inches

Six inches

Variable valency is generally exhibited by

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Normal elements

Transition elements

Metallic elements

None of these

Portland cement is manufactured by using

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Limestone,clay and sand

Limestone,gypsum and sand

Limestone,gypsum and alumina

Limestone,clay and gypsum

When pressure is applied to the equilibrium system Ice Water Which of the following phenomenon will happen?

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More ice will be formed

Water will evaporate

More water will be formed

Equilibrium will not be formed

Ethyl chloride on treatment with aqueous alkali gives

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Ethane

Ethene

Ethanal

Ethanol

What quantity of limestone (CaCO₃) on heating will give 56 kg of CaO?

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1000 kg

56 kg

44 kg

100kg

Which metal is protected by a layer of its own oxide?

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AI

Ag

Au

Fe

Which of the following alcohols cannot be produced by treatment of aldehydes or ketones with NaBh₄or LiAH₄?

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1-Propanol

2-Propanol

2-Methyl2-Proponal

Ethanol.

DDT is formed from

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Benzene and Chlorobenzene

Chloral and Chlorobenzene

Chloral and benzene

Chlorobenzene and chlorine

The formula to calcium cyanamide is

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Ca(CN)₂

CaC_2N

CaNCN

CaCHNH₂

The reaction/method that does not give an alkane is

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Catalytic hydrogenation of alkanes

Wurtz reaction

Hydrolysis of alkyl magnesium bromide

Dehydrohalogenation of an alkyl halide.

The density of nitrogen gas prepared from air is slightly greater than that of nitrogen prepare by a chemical reaction form a compound of nitrogen due to the presence of the following in aerial nitrogen.

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Argon

CO₂

Some nitrogen molecules analogous to O2

Greater amount of nitrogen molecules derived from N¹⁵isotope.

The number of oxygen atoms in 4.4 g of CO₂is approximately

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1.2 x 10²³

6 x 10²²

6 x 10²³

12 x 10²³

Gooch Crucible used to filter the solution of

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H₂SO₄

HCI

KMnO₄

Both B & C

Potassium crystallizes with a

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Orthogonal lattice

Cubic lattice

Triclinic

Ortho rhombic lattice

The spectrum of helium is expected to be similar to that of

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H

Li⁺

Na

He⁺

Hydrolytic conversion of sucrose into glucose and fructose is known as

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Induction

Inversion

Insertion

Inhibition

Which one of the following has the lowest boiling point?

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B

Al

Ga

Ti

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