Question # 1

What will be the shape of a molecule which containstwo sigma bond pairs and one lone pair?

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Linear

V shape

Tetragonal

Triangular

Choose a point which is not included in the components of environment:

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stratosphere

hydrosphere

lithosphere

biosphere

Lipids, proteins, carbohydrates and nucleic acids belong to macromolecules:

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inorganic

organic

Biopolymer

synthetic

Keeping in view different factors which affect the melting point of a substance.the compound having melting point among the following is:

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LiCl

NaCl

CsCl

RbCl

Grey tin crystals belong to

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tetragonal

cubic

orthorhombic

rhomtrohedral

For a chemical reaction to occur

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The vessel shall be open

Reacting molecules should have less energy than Ea at time of collision

Reacting molecules must be properly oriented and energy more than or equal to Ea

The reacting molecules must not collide with each other

Polymers class is:

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homopolymer

copolymer

ter polymer

All of these

The ideal gas law holds best under the conditions of

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high pressure and high temperature

low pressure and high temperature

low pressure and low temperature

high pressure and low temperature

If the volume term is present in denominator of Kc expression, then which one is correct

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Increase in pressure will shift the reaction backward

Increase in pressure will shift the reaction forward direction

Decrease in volume will shift the reaction forward direction

Reaction will not effected

Which not a method for solid waste management>

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Landfill

Incinerating

Recycling

None of these

Which one of the following does not act as pollutant?

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carbon monoxide

sulphur dioxide

hydrocarbons

carbon dioxide

A special application of the Hess's law to binary ionic compounds of M⁺X^-type in calculation of their lattice energies is

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Enthalpy of reaction

Born-haber cycle

First law of thermodynamics

Enthalpy of combustion

Chemical equilibrium involving reactants and products in more than one phase is called

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Static

Dynamic

Homogeneous

Heterogeneous

What are the products electrolysis of aqueous sodium chloride at two electrodes

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Chlorine at anode and oxygen at cathode.

Hydrogen at anode and chlorine at cathode.

Chlorine at anode and hydrogen at cathode.

Chlorine at anode and sodium at cathode.

The natural fertilizers consist of

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Plants

Animals

Both plants and animals

Microorganisms

Glucose in the presence of zymase is converted into

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Alcohol

Acid

Ethyl alcohol

Ketone

Which reaction produces a free radical

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SN reaction

Homelytic fission reaction

Heterolytic fission reaction

Addition reaction

The ionization potential is lowest for the

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Halogens

Inert gases

Alkaline earth metals

Alkali metals

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KC = KP

Kp = KcRT

Kp = kc(RT)^-2

Kp = Kc(RT)^-1

Lower carboxylic acids are soluble in water due to

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Low molecular weight

Hydrogen bonding

Dissociation into ions

Easy hydrolysis

Two solutions of NaCl and KCl are prepared separately by dissolving 0.1 M of the solute in water. Which of the following statements is not true for these solution

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KCl solution will have higher boiling point than NaCl solution

Both the solutions have same boiling

KCl and NaCl solution possess same vapour pressure

KCl solution possess same freezing point at NaCl solution

Copolymer is

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Nylon-6

Nylon 66

PMMA

Polyethene

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