Question # 1

Deep sea divers take oxygen with:

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A heavy gas

A lighter gas

An inert gas

All of above

The curve which is obtain from Boyle's law is called as

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Isochoric

Isotherm

Adiabatic

All of these

What types of bonds are broken when water turns into steam on heating?

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covalent

permanent dipole interactions

hydrogen bonds

induced dipole interactions

Stronger the oxidizing agent, higher is

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Redox potential

Standard reduction potential

Reduction potential

_{Oxidation potemial}

All the metal shine when they are freshly cut The reason is

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the conductivity of the metal is increased

the process of cutting gives energy to the metal atoms

the electrons become less delocalized according to valance bond theory

the electrons are excited at higher energy levels and emit the photons when they fall back

Surface and ground water sources are contaminated by various human activities. Which of the following is not human activity that causes contamination in fresh water

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Live stock waste

Oil leaks and spills

Desposal of industrial effluents

Rain

Energy required to remove electron from an atom

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Ionization potential

Electronegativity

Electropositivity

Electron affinity

The other name for cross linked polymers is

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Linear polymer

Branched polymers

Inter connected polymers

None of these

How many kinds of space lattices are possible in a crystal?

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23

7

230

14

Macromolecules are classified:

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inorganic

organic

biopolymer

synthetic

Amino acids react together to form the primary structure of proteins which is accompanied by

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addition of water

addition of ammonia

removal of ammonia

removal of water

The next homologue of C₁₀H₂₂will be

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C₉H₂₀

C₁₂H₂₆

C₁₁H₂₄

C₁₃H₂₈

When propanamide reacts with Br₂and NaOH then which of the following compounds is formed?

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Ethyl alcohol

Propyl alcohol

Propyl amine

Ethylamine

Which of the following does not give iodoform test?

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Ethanol

Ethanal

Acetophenone

Bezophenone

Plastics are a pollution problem because many plastics

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Are made from petroleum

Are very inflammable

Burn to produce toxic fumes

Decompose to produce toxic products

For a given process, the heat changes at constant pressure (q_p) and at constant volume (q_v) are related to each other as

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q_p= q_v

q_p< q_v

q_p= qv/2

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8

4

9

3

The substance upon which an enzyme acts is known as its

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Domain

Field

Substrate

Reactant

The acids obtained by the hydrolysis of fats and oils are called

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Active compound

Fatty acids

Functional group

None

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The value of K_pfalls with rise in temperature

The value of K_pfalls with increasing pressure

Addition of V₂O₅catalyst increase the concentration of SO₃

The value of K_pis equal to K_c

Cellulose does:

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Satisfy human appetite

Stimulates intestinal peristalsis

Gives fibre and bulk to the food

All of these

If Grignard reagent is allowed to react with another alkyl halide the main product is

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An alkane

Cyclo alkane

Alkyne

An alkene

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