Question # 1

The number of reacting molecules whose concentration change during reaction is called

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Activated molecule

Rate of reaction

Order of reaction

half-life

Formula of sodium beryllite is

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Na2B4O7

Na2BeO2

BeONa

Na2B4O7 .10 H2O

An ideal gas obeying kinetic gas equation can be liquefied if

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Its temperature is more than critical temperature

Its pressure is more than critical pressure

Its pressure is more than critical pressure but temperature is less than critical temperature

It cannot be liquefied at any value of P and T

Nitrogen in the atmosphere is:

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78%

21%

0.9%

0.03%

Which af the following compound reacts slower than benzene in the electrophilic substitution.

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Phenol

Nitrobenzene

Toluene

Aniline

Equal masses of CH₄and O₂are mixed in a 10 dm³container at 25°C. The partial pressures of CH₄and O₂are in the ratio of

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1 : 2

2 : 1

1 : 1

2 : 3

Which of the following is a non-crystalline solids pair

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Diamond, wood

Glass, table salt

Wood, glass

Sucrose, glass

Cooling happens under the Joule Thomson Effect due to sudden:

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Contraction.

Absorption.

Expansion.

All of above.

Enzymes are

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simple proteins

derived proteins

compound proteins

conjugated proteins

Energy required to remove electron from an atom

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Ionization potential

Electronegativity

Electropositivity

Electron affinity

Casenogen is

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Chromoprotein

Phosphoprotein

Glycoprotein

Lipoprotein

95% ethanol is called:

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Rectified other

Diesel

Rectified spirit

Petrol

A compound containing carboxyl group in them are called:

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Ketone

Ether

Carboxylic acids

Polycarboxylic acid

The coordination number of iron in [Fe(H₂O)₆]³⁺is

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2

3

4

6

Analytical chemistry is the science of

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Chemical characterization

Physical characterization

Biological characterization

Biochemical characterization

Which of these polymers is a synthetic polymer?

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Animal fat

Starch

Cellulose

Polyester

Esters have peculiar smell, which of the following is used as an essence of orange

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Isoamyl acetate

Iosamyl valerate

Octyl acetate

Methyl butyrate

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Neutrons are attracted by nucleus

Neutrons carry out nuclear reactions

Neutrons carry no charge

Neutrons are electromagnetic radiations

The theory of chemical bonding has been a major problem of:

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Modern Physics.

Modern Chemistry.

Modern Biology.

Mechanics.

Which of the following statement is correct for a chemical reaction to occur molecules of substances must

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Collide with each other

Collide with energy more than activation energy

Collide with energy less than activation energy

Collide with high frequency

Which of the following compounds could be prepared by reacting bromoethane with KCN and then reducing the product

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CH₃CH₃

CH₃CH₂NH₂

CH₃CH₂CH₂NH₂

CH₃CH₂CH₃

The size of electronic shell is described by

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Azimuthal Q. no

Magnetic Q.No

Spin Q. No

Principle Q. No

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