Question # 1

Which compound is obtained hy the elimination reaction on bromoethane?

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Butene

Ethene

Propene

Propane

Temperature at which molecular motion ceases is called

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Absolute zero

Absolute temperature

Critical temperature

Difficult to predict

The deviation of a real gas from ideal behaviour is maximum at

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-10.0°C and 50 atm

-10°C and 2 atm

100°C and 2.0 atm

0°C and 2 atm

The cause of minamate disease is the pollution of:

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arsenic (As) into atmosphere

industrial waste having Hg

organic waste in drinking H₂O

oil spills in H₂O

Ammonium nitrate fertilizer is not used for which crop:

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cotton

wheat

sugar cane

paddy rice

If absolute temperature of a gas is doubled and pressure is reduced to one half, then the volume of the gas will

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remains unchanged

increases unchanged

reduces to 1/4

increases 4 times

In the reaction A+B→ Products, if B is taken in excess, then it is an example of

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Second order reaction

zero order reaction

Pseudo first order reaction

first order reaction

The helical structure of protein is stabilized by

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Peptide bond

Covalent

Hydrogen bond

Glycoside bond

Biological oxygen demand (BOD) is associated with

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Organic matter

Micro organisms

Both a and b

None

Which not a method for solid waste management>

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Landfill

Incinerating

Recycling

None of these

The pressure exerted by the vapours in equilibrium with its pure liquid at given temperature is called the

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equilibrium pressure

atmospheric pressure

vapour pressure

external pressure

A common industrial solvent is a mixture of propanone; CH₃COCH₃, and pentyl ethanoate CH₃CO₂(CH₂)₄CH₃. Which reagent would have no effect on this solvent

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Na_(s)

NaBH₄

NaOH_(aq)

2,4-dinitrophenylhydrazine reagent

Compounds having same molecular formula but different structures are said to be

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Monomers

Isomers

Metamers

Tautomers

The unit of specific conductivity is

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Ohm cm^-1

Ohm cm^-2

Ohm^-1cm

Ohm^-1cm^-1

Which of the following form normal oxide

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K

Li

Na

None

An element of the third period (Na to S) is heated in chlorine. The product is purified and then added to water. The resulting solution is found to be neutral. What is the element

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Sodium

Aluminium

Silicon

Phosphorus

The element with highest electron affinity among the halogen is

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F

Cl

Br

I

Alcohols react with carboxylic acid to produce the class of compounds known as

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Grignard's reagent

Esters

Amides

None of these

Which one of the following is a colligative property?

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Surface tension

Osmotic pressure

Viscosity

Refractive index

The branch of chemistry which deals with thermal energy changes in chemical reactions is called

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Chemical kinetic

Thermodynamics

Thermochemistry

Mechanics

Which of the following compound is no formed according to octet rule:

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KrF₂

XeF₂

XeO₃

SF₆

The isomers due to the unequal distribution of carbon atoms on either side of the functional group belonging to the same homologous series are called

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Functional isomers

Position isomers

Chain isomers

Metamers

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