Question # 1

Diffusion of different species is due to difference of

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potential energy

temperature

density

all the above

Inside every fluorescent lamp there is present a:

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Gas

Plasma

Liquid

Solid

Carboxylic acids having carboxyl group one is called:

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Mono carboxylic acid

Di-carboxylic acid

Teri-carboxylic acid

Tetra carboxylic acid

White marble buildings are effected by?

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O₂

SO₂

CI₂

CFC_s

Density of a gas increases by

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increasing value of R

decreasing value of R

increasing T

decreasing T

The forces of attraction between the solid atoms of helium are

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hydrogen boding

coordinate covalent bond

covalent bond

London dispersion force

The root mean square velocity of a gas is doubled when the temperature is

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reduced to half.

reduced to one-fourth

increased four times

inereased two times

Fungicides are the pesticides which:

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Kill plants

Kill insects

Kill herbs

Control the growth of fungus

Which of the following configurations corresponds to alkaline earth metals?

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[Ar] 3d10, 4s2

[Ne] 3d2, 3p2

[Ar] 4s2

[Ar], 3d10, 4s1

Ethane nitrile can be converted into ethanoic acid through......intermediate

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Ethyl alcohol

AcetyI chloride

Acetamide

Methyl cyanide

Carboxylic acid can be prepared from the reaction of Grigard's reagent with:

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Aldehydes

Ketones

Formaldehyde

CO₂

Poly hydroxyl compounds of aldehyde and ketones are:

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Carbohydrates

Proteins

Fats

Lipids

Natural rubber is a polymer of

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Butadiene

Ethyne

Styrene

Isoprene

The correct order of electron affinity among the following is

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F > Cl > Br

Br > Cl > F

Cl > F > Br

F > Br > Cl

When phenol is distilled with zinc dust. It is reduced to

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Benzene

Benzaldehyde

Toluene

Hexanol

Factor which slows down the rate of reaction is

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Small size of the particles of the reactant

High temperature of reaction

More concentration of reactant

Lowering the temperature

An alkynes having Carbon count of 20 is

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gas

liquid

Solid

None

Acetamides are formed by the reaction of carboxylic acids with

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Acids

Bases

Salts

NH₃

Aliphatic carboxylic acids have carboxyl group attached to:

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Alkyl group

Aryl group

Phenyl group

Benzyl lgroup

Nylon 6, 6 is prepared by the reaction of nexamethylene with

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Formic acid

Acetic acid

Adipic acid

None of these

Which of the following molecules has unpaired electrons in anti-bonding molecular orbitals?

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O₂

N₂

Br₂

F₂

The electrolytic cell used for the production of metallic sodium is known as

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Down's cell

Solvary's cell

Haber's cell

None of these

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