Question # 1

The rate of reaction for a reaction is 30 mol dm-3sec-1 if the product of concentration of 10.reactant is unity the specific rate constant is

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25

2.5

30

15

Water may boil at 120 °C when external pressure is:

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100 mm of Hg

700 mm of Hg

760 mm of Hg

1489 mm of Hg

Zn has

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Zero unpaired electrons

Three unpaired electrons

Five unpaired electrons

One paired electrons

One Pascal is equal to

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1 Nm^-2

1 Nm

1 Nm^-1

1 Nm²

Aldehydes are easily oxidized to corresponding carboxylic acids in the presence of:

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Strong oxidizing agents

Highly strong oxidizing agents

Tollen's reagent

Tollen's reagent and Fehling solution

What will be the ratio of volume of equal masses of O₂, H₂and CH₄kept in same container under same conditions

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2 : 16 : 2

1 : 16 : 2

2 : 16 : 1

1 : 2 : 1

The conversion of molecules of A to B follows a second order kineties. Doubling the concentration of A will inerease the rate of formation of B by a factor of

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2

4

1/2

1/4

Rate of which reaction increases with temperature?

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Exothermic and endothermic reactions

Endothermic reactions

Exothermic reactions

None of these

Ozone acts as:

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Pollutant

saver

oxidatant

All of these

In the transition state of S2 mechanism reaction with alkyl halides, which of the following orbital hybridization is involved

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sp³

sp

sp²

dsp³

Oxides of sulphur react in atmosphere by various reactions to form:

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sulphates

sulphites

sulphides

sulphate aerosols

In passage of electricity through aqueous solution of AgNO₃silver dissolves at anode to form Ag⁺, the electrodes are

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Silver metal

Pt metal

Graphite

Copper metal

Acetic acid is obtained when

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Methyl alcohol is oxidized with potassium permanganate

Calcium acetate is distilled in the presence of calcium formate

Acetaldehyde is oxidized with potassium dichromate and sulphuric acid

Glycerol is heated with sulphuric acid

The fibre which is made from acrylonitrile as monomer:

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PVC

Rayon fibre

Acrylic fibre

Polyester fibre

Paraffins are also called

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Alkanes

Alkynes

Alkenes

None of these

Which of the following is not an air

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N₂

N₂O

NO

CO

Benzene is not prepared from

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Acetylene

Phenol

Benzoic acid

Bromo benzene

The osmotic pressure of a dilute solution is directly proportional to the

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Diffusion rate of the solute

Ionic concentration

Elevation in boiling point

Flow of solvent from a concentrated to a dilute solution

Synthetic rubber is made by polymerization of

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Chloroform

Acetylene

Divinlacetylene

Butene

When an electron is absorbed in an empty or partially filled orbital of an atom, the energy released is called

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Ionization energy

Potential energy

Electron affinity

Bond energy

The steroids of fungi and yeast are called:

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Vitamin D

Vitamin D₂

Ergosterol

Cholestorl

Which is not a steroid

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Cholesterol

Ergosterol

Phospholipids

None of these

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