Question # 1

Velaric acid is obtained from a herb velarian, its IUPAC name is

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Propionic acid

Pentanoic acid

Butyric acid

Caporic acid

Oceans, rivers, streams, leaks, polar ice caps, glaciers and group water reservoirs are included in

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Atmosphere

Lithosphere

Hydrosphere

Biosphere

A teacher told his student that air is a mixture. This is due to the reason that suddenly a student raised his hand and said:

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it has different properties from its constituents

oxygen can be removed from it

it is colourless

its composition is different at different altitudes.

Which is not a calcareous material?

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lime

clay

marble

marine shell

Which of the following statement is not true?

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The pressure of a gas is due to collision of the gas molecules with the walls of the container.

The molecular velocity of any gas is proportional to the square root of the absolute temperature.

The rate of diffusion of a gas is directly proportional to the density of the gas at constant pressure.

Kinetic energy of an ideal gas is directly proportional to the absolute temperature.

Gases deviate from ideal behaviour at high pressure.Which of the following is correct for non-ideality?

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at high pressure the gas molecules move in one direction only

at high pressure the collisions between the gas molecules are increased manifold

a high pressure the volume of the gas become insignificant

at high pressure, the intermolecular attraction becomes significant

Crystal can be classified in to ......basic crystal habits

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7

4

14

3

The most complex strueture a single polypetide can assume is

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1° structure

2°structure

3° structure

4° structure

The elements for which the value of ionization energy is low can

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Gain electrons readily

Lose electron less readily

Gain electrons with difficulty

Lose electron readily

Which of the following is the simplest form of matter?

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Gaseous state

Liquid state

Solid state

All of above

Optimum PH rang for amylases is

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6 - 6.4

6.4 - 6.6

6.4 - 6.9

6.6 - 6.9

Which of the following is not fatty acid?

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Propanoic acid

Acetic acid

Phthalic acid

Butanoic acid

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Electrophilic substitution

Free radical reduction

Isomerisation

Nucleophilic substitution

Series starting from57La,42Hf -80Hg is in the period:

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4th

5th

6th

7th

Solubility of KMnO₄at higher temperature is:

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5%

7%

15%

25%

Which of the following is a molecular diseases?

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Allergy

Cancer

German measles

Sickle cell anemia

Phosphate pollution is caused by

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Weathering of phosphate rocks only

Agricultural fertilizers

Phosphate rocks and sewage

Sewage and agricultural fertilizers

Solvent extraction is an unstable,Process and it is controlled by:

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Alcohol extraction

Petrol extraction

Phenol extraction

Ether extraction

The major reaction occurring in the engines of automobiles is

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Oxidation

Reducing

Combustion

Decomposition

Carboxylic acids on complete reduction in the presence of HI and red Phosphours gives:

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esters

alcohols

alkanes

aldehydes

Heat,. work and internal energy of the system and surroundings are related into an equation which is called

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First law of thermodynamics

Hess's law

Henry's law

Born-haber cycle

The bond angle between hydrogen atoms and carbon in alkane is

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104.5°

107.5°

109.5°

120.5°

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