Question # 1

A molecule of polysaccharide hydrolysis produces __________ molecules of:

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2

3

2-10

100

The value of R in term of dm³torr k^-1mol^-1

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62400

62.4

8.313

0.0821

The elements of group I-A react violently with water and make the solution

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neutral

amphoteric

acidic

alkaline

Compressibility factor for an ideal gas is

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1.5

1.0

2.0

0.5

Which one among the following is not a natural polymer

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Protein

Cellulose

Nylon

Nucleic acid

Which step is unnecessary for purification of water for drinking purposes

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aeration

coagulation

treatment with chlorine

treatment with iodine

Total number of valence electrons in CH4

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8

9

10

12

A single chloride free radical can destroy the ozone molecules

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100

100000

10000

10

Which of the following is not the property of liquid crystal

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anisotropic

isotropic

three dimensional arrangement

fluidity

In the reaction A2 (g) + 4B2 (g) <-----------> 2AB4 (g) such that ∆H < 0, the formation of AB4(g) will be favoured at

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Low temperature and high pressure

Low temperature and low pressure

High temperature and low pressure

High temperature and high pressure

The electrochemical series is based on

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pH scale

Redox scale

Hdrogen scale

Arrhenius scale

Any property which depends upon the T.P and V is said to be

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Property due to k.E.

Property due to PE

Both a and b

Thermodynamic state

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4 mole per dm³

2 mole per dm³

0.33 mole per dm³

0.67 mole per dm³

Absolute alcohol is obtained by adding rectified apirit in alcohol:

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Water

Na₂CO₃

NaOH

CaO

The IUPAC name fo CH₃COCH (CH₃)₂is

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4-Methylisopropyl ketone

3-Methyl-2 butanone

Isopropylmethyl ketone

2 - Methyl- 2 butanone

Solution may have units

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Molarity

Molality

Mole fraction

All of them

Which is the derived lipid?

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Common fats

Vitamin-D

Common oils

Spinolipids

An azeotropic mixture of two liquids boils at a lower temperature than either of them when lower temperature

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It is saturated

it shows positive deviation from Raoult's law

It shows negative deviation form Raoult's law

It is metastable

The effective activity of a metal catalyst is increased if it is in

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Solid form

Liquid state

Gaseous state

Finely divided form

Boiling point of acetic acid is°C:

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116

117

118

119

Amino acids are buildng blocks of:

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protein

Carbohydrates

Lipids

fats

Major component of natural gas is:

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Ethane

Ethene

Propane

Methane

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