Question # 1

Eleven elements made part of earth mass:

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97.5%

98.5%

99.5%

100%

A real gas obeying van der Waals equation will resemble ideal gas if

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Both a and b are large

a is large and b is small

Both a and b are small

a is small and b is large

Which one of the following enzymes brings about the hydrolysis of fats?

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Urease

Maltase

Zymase

Lypase

Silk is the example of:

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mineral fiber

vegetable fiber

animal fiber

none of above

Bonding in MgO is an example of

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lonic bond

Polar bond

Covalent bond

Coordination covalent bond

Which ion has maximum number of unpaired electrons in 3d subshell and shows maximum paramagnetic behavior?

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Cr+3

Ni+2

Co+2

Fe+3

If ionic product is equal to Ksp then the solution is

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Unsaturatec

Ideal

Supersaturated

Saturated

The mass of 8.5 dm³of oxygen gas at 0.0821 atm and -1°C is

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100 g

10 g

1 g

0.1 g

This is known fact that the molar volumes of different gases at S.T.P. are

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much larger than the molar volumes of liquids and solids

little bit less than the molar volumes of solids

about the same as the molar volumes of liquids

little bit greeter than the molar volumes of liquids

Which one of the following is not type of polemer

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Copolymer

Homopolymer

Terpolymer

Heteropolymer

Carboxylic acid having two carboxyl group are:

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Mono-carboxylic acid

Di-carboxylic acid

Tri-carboxylic acid

Tetra carboxylic acid

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1

2

3

4

The reaction of sodium with ethanol gives

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CH₃OH

NaH

H₂O

H₂

Which one of the following substance is use as decolonizing agent

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Asbestos

Animal charcoal

conc, H₂SO₄

Silica gel

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Addition Elimination

Addition Reduction

Elimination Reduction

Substitution Elimination

Similarity in properties of different organic compounds give rise to the under standing of ______

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Polymerization

Non-polar nature

Homologous series

Isomerism

In Lucas test primary alcohol make as oily layer

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Immediately

In 10 mins

On heating

Not

Orbital having same energy is called:

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Hybrid orbital.

Valence orbital.

Degenerate orbital.

D-orbital.

Aromatic hydrocarbons are the derivatives of

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Normal series of paraffins

Alkene

Benzene

Cyclohexane

Smallest charge of electricity that has been measured so far is

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Charge on a-rays

Charge on electron (1.602 x 10^-19C)

Charge on x-rays

Charge on gamma rays

The amount of heat evolved or absorbed in a chemical reaction indicated by balanced chemical equation at 25° and one atmospheric pressure is called

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Enthalpy of formation

Enthalpy of neutralization

Enthaply of combustion

Enthaply of reaction

Which one of the following dissolves more rapidly in blood hemoglobin than oxygen?

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Ozone

Nitrous oxide

Sulphure dioxide

Carbon monoxide

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