Question # 1

The bonding which occurs among polar covalent molecules containing H and one of the small electronegative element such as O, F or N is called

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bridge bonding

metallic bonding

hydrogen bonding

Ionic bonding

Which of the following statement is not correct for glycogen

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It is main storage of carbohydrates

It structure does not resemble Amylopectin

It has 1 → 4 and 1 → 6 glycosidic linkage

On hydrolysis it yields glucose units

Critical temperature of argon's gas is low. the reason is that

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it contains four lone pairs

it is mono atomic gas

it has as smell signed

its polarizability is low

Newspaper can be recycled again and again by how many times

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5

4

2

3

Which of the following substance has maximum critical temperature

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H₂O

N₂

SO₂

Ne

2-propanol on oxidation yield

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Propionaldehyde

Propanone

Propanal

Butanal

If the rate of the reaction is equal to the rate constant, the order of the reaction is

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3

1

0

2

Potassium crystallizes with a

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Orthogonal lattice

Cubic lattice

Triclinic

Ortho rhombic lattice

Inside every fluorescent lamp there is present a:

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Gas

Plasma

Liquid

Solid

A state function which describes together the internal energy and product of pressure and volume is called

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Enthalpy

internal energy

Work

Kinetic energy

UV rays inactivate enzymes because they

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change sequence of amino acids of enzymes

They add prosthetic group to them

They increase their specificity

affect structure of enzymes

Which one is a nitrogen fertilizer

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Urea

Calcium sulphate

Potassium phospahte

Magnesium carbonate

An organic compound 'X' on treatment with acidified K₂Cr₂O₇gives a compound 'Y' which reacts with I₂and sodium carbonate to form Triodomethane. The compound 'X' is

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CH₃OH

CH₃CHO

CH₃CH(OH)CH₃

CH₃COCH₃

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

Which behaves as insulator for animals body?

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Carbohydrates

Proteins

Fats

Skin

A system undergoes a change to attain the state of

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High energy

Low energy

Moderate energy

None of these

Mustard gas is a

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Gas

High boiling speed

High melting liquid

Steam

Which of the following is not a fatty acid

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Propanoic acid

Acetic acid

Phthalic acid

Butanoic acid

Alcohols, phenols and ethers may be considered as derivative of

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Hydrocarbons

Benzene

Carboxylic acid

Water

The reaction rate is expressed in the units of

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Mol dm^-3S^-

Mol dm^-3

Mol dm^-3N^-

dm^-3S^-

The IUPAC name fo CH₃COCH (CH₃)₂is

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4-Methylisopropyl ketone

3-Methyl-2 butanone

Isopropylmethyl ketone

2 - Methyl- 2 butanone

Ethyl alcohol is industrially prepared from ethylene by

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permanganate oxidation

Catalytic reduction

Absorbing in H₂SO₄followed by hydrolysis

Fermentation

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