Question # 1

Which one is a non-polar compound?

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SnCl2

PH3

Gecl4

H2O

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

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inorganic

organic

Biopolymer

synthetic

Which of the followings has electronic configuration of Ar in +3 oxidation state

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Sc

Mn

Ti

Zn

The solubility of Fe(OH)3 is 'x' mole per dm3. Its Ksp would be

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9X3

3X4

27X4

9X4

Density of a gas increases by

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increasing value of R

decreasing value of R

increasing T

decreasing T

Synthetic organic pesticides formulated nowadays are more then:

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One thousand

Ten thousand

Two thousands

Twenty thousand

Which one of the following pair of atoms is most likely to form an inoic bond?

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Na and F

C and F

N and F

O and F

Oxygen molecule is 16 times heavier than:

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Helium

Hydrogen

Neon

Aluminium

What is true about an alcohol and phenol

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Both are more acidic than water

Both react with NaOH

Both produce CO2 with Na2CO3

Both, produce H2 with Na

Which process of ester will yield carboxylic acid?

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Hydration

Hydrolysis

Oxidation

Reduction

Polymerisation of vinyl acetate is a type of:

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homopolymer

copolymer

ter polymer

All of these

Chloroflurocarbon releases a chemical harmful to ozone

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Fluorine

Chlorine

Nitrogen peroxide

Sulphure dioxdie

2-Bromopentane is heated with potassium ethoxide in ethanol . The major product obtained is

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2-Ethoxypentane

Pent-1-ene

cis-Pent-2-ene

trans-Pent-2-ene

Which of the element is not an alkaline earth metal

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Beryllium

Strontium

Barium

Caesium

The addition of a catalyst to a reaction changes the

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Enthalpy

Entropy

Nature of reactants

Energy of activation

Sodium forms largely

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Normal oxides

Per-oxides

Superoxides

None of these

White phosphorus is

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A mono atomic gas

P₄, a tetrahedral solid

P₈, a crown

A linear diatomic molecule

The reaction between fat and NaOH is called:

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Esterification

Hydrogenolysis

Fermentation

Sponification

The number of antibonding electron pairs in O^2-molecular ion on the basis of MOT is

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4

3

2

5

Propanone is the product obtained by dehydrogenation of

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2-Propanol

1-Propanol

Isobutyl alcohol

Propanethoil

Electrons in degenerate orbitals are placed in separate orbitals with same spin according to

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Hund's rule

Pauli exclusion principle

Aufbau principle

Mosley's law

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154 pm

133 pm

120 pm

150 pm

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