Question # 1

For gases obeying Boyle's law, if pressure is quadrupled, the volume becomes

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Double

One half

One fourth

Remains constant

Deep sea divers take oxygen with:

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A heavy gas

A lighter gas

An inert gas

All of above

Benzene reacts with Ethyl chloride in presence of AICls to give

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Benzalchloride

Benzyl chloride

Ethyl benzene

Benzotrichloride

Which of the following is sulphur highly containing protein

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Collagen

Keratin

Ossein

Reticulin

A molecule of polysacharide on hydrolysis produces ______ molecules of monosacharide

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2 - 10

3

10

2

Lonic solids are characterized by:

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low melting points

_{good conductivety in solid state}

high vapour pressures

solubility in polar solvents

Alcohol is less acidie than phenol due to

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higher ka value

Instability of alkoxide ion

stability of carbocation

Stability of phenol

Consider the following reaction
R-CHO + 2Ag(NH3)2OH + R-COONH+ +2Ag+2NH3+H2OThis reaction represents

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Fehling test

Ninhydrin test

Benedict lest

Tollen's test

A complete food contains at least

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Three nutrients

Ten nutrients

Six nutrients

Ten nutrients

Which step is unnecessary for purification of water for drinking purposes

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aeration

coagulation

treatment with chlorine

treatment with iodine

An element from the given below exists as discrete small molecules in the solid state. Which is that?

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Sodium

Silicon

lodine

lron

What is wrong about transition metals?

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Diamagnetic

Paramagnetic

Form complexes

Shows variable oxidation state

The reaction is galvanic cell is

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Spontaneous

Non-spontaneous

Acid-base

None of these

Lattice energy of NaCI

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+5000 KJ

-344 KJ

-776 KJ

-411 KJ

Baukelite is a polymer obtained from two monomers

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Phenol and ethanol

Phenol and methanol

Phenol and methanal

Phenol and acetone

Alkanes have functional group :

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----X

--OH

----COH

No functional group

For the above reaction the relationship b/w k_c and k_p will be :

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K_p = K_cRT

Kp = K_c(RT)_-1

K_p = K_c(RT)_-2

K_c = K_p

General formula of alkyl halide is:

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R----X

R----OH

R------COH

R------COOH

Which of the substances Na, Hg, S Pt and graphite can be used as electrodes in electrolytic cells having aqueous solution?

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Na, Pt and graphite

Na and Hg

Pt and graphite only

Na and S only

Which is not true about acetophenone?

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Reacts to form 2,4-dintrophenyl hydrazine

Reacts with Tollen's reagent to form silver mirror

Reacts with I₂/NaOH to form iodoform

On oxidation with alkaline KMnO₄followed by hydrolysis gives benzoic acid

Which is made by coordinate covalent bond

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H₃O⁺

H₂O

CH₄

HCl

Which of the following is commonly called polyamide

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Nylon

Rayon

Terylene

Oridon

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