Question # 1

In dilatometric method is directly proportional to extent of reaction

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Change in concentration

Change in pressure

Chang in volume

Change in temperature

In a cubic lattice a unit cell is shard equally by how many unit cells?

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4

2

6

8

Which one increases by common ion effect except?

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Crystallization

Solubility

Association of ions

All of these

Formalin is used as:

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Fungicide

Germicide

Sterilizing of surgical instruments

All three

Which of the following govern the diffusion of gases

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Dalton's law

Avogadro's law

Graham's law

Newton's law

Which of the following is pseudosolid?

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CaF₂

Glass

NaCl

All

If volume of an ideal gas at 0C° 536cm3, what is volume at 1°C

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373 cm3

646 cm3

Becomes 0cm3

746 cm3

The amount of Si in the lithosphere is about

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27.72%

30.35%

35.30%

40.21%

A line parallel to x-axis is obtained when graph is drawn between

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Volume on abscissa & pressure on ordinate

Volume on abscissa & PV on ordinate at all conditions

Pressure on abscissa & PV on ordinate at constant temperature

None of these

One gram of carbohydrate yields energy

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10 kcal

100 kcal

4 kcal

9 kcal

The alternate name of Glucose is

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Dextrose

Grape sugar

Blood sugar

All

Alkyl halides on treatment with aqueous KOH give

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Phenol

Alcohol

Aldehyde

Ketone

Grignard reagent is reactive due to :

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The presence of halogen atom

The presence of Mg atom

The polarity of C - Mg bond

None of them

Water H₂O is liquid while hydrogen sulphide H₂S is a gas beause

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Water has higher molecular weight

Hydrogen sulphide is a weak acid

Sulphure has high electronegativity than oxyhe

Water molecules associate through hydrogen bonding

Which of the following elements is not stable:

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Xe

Ar.

Kr.

Li.

The order of reactivity of halogen acids towards alkenes

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HCl > HBr > Hl

HBr > HCl > HI

HCl > HBr

HI > HBr > HCl

Ketons are prepared by the oxidation of

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Primary alcohol

Secondary alcohol

Tertiary alcohol

None of these

Electron affinity of sulphur is

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More than O and Se

More than O but less than Se

Less than O but more than Se

Equal to O and Se

Charge to mass ratio of electron was discovered by:

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Millika.

Rutherford.

J.J. Thomson.

Chadwick.

If the value of azimuthal quantum number is 3, then values of m the magnetic quantum no. will be

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0, 1, 2, 3

+3, +2, +1, -1, -2, -3

0, -1, -2 ,-3

-3, 0, +3

Polyanion formation is maximum in

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Nitrogen

Oxygen

Sulphur

Boron

Which one of the following mixture shows positive deviation form Rault's law and forms an azetrope with minimum boiling point

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Methanol + CCI₄

Methanol + acetone

Ether + HCI

Acetone + chloroform

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