Question # 1

At higher temperature isotherm of Boyle's law moves away from both axis, is due to increase in:

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pressure

No. of moles

Volume

All

Keeping in view the charge density select the compound amoung the following having highest lattic energy:

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LiBr

KCI

MgO

NaF

Esterification of CH3COOH isreaction

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Acid base

Electrophilic

Redox

Nucleophilic

Formation of Picric acid from phenol needs heating, one possible reason for it is

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acidity of phenol

e- donating nature of-OH

acidity of picric acid

e- with drawing effect of- NO2

The law of distribution of energy is given by

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Clausius

Maxwell

Bernoulli

Boltzmann

How many fertilizer plants are now in Pakistan?

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20

14

12

10

The percentage of SO₂ produced by volcanoes is:

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47%

57%

67%

77%

The slope of the graph is steepest at the beginning of reaction showing

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Rapid decrease in concentration of reactants

Rapid increase in concentration of reactants

Fast rate of reaction

All of the above

Most of the universe consists of the matter in :

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Gaseous state

Liquid state

Plazma state

Solid state

In the atmosphere, O₂is about

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10%

15%

21%

25%

Polar ice caps can melt due to

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Acid rain

Green House Effect

Smog

Chlorofluorocarbons

Geographical survey of Pakistan estimates about billion tons of coal in Pakistan:

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182

183

184

185

Which one of the following statements about glucose and sucrose is incorrect?

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Both are soluble in water

Both are naturally occuring

Both are carbohydrates

Both are disaccharides

[Zn(NH₃)₄]³⁺possess geometry

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Square plannar

Hexagonal

Tetrahedral

None of these

Ozone depletion in stratosphere shall result in

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Forest fires

Increased incidence of skin cancer

Global warming

None of the above

Oxidation reduction is done by

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Oxidoreductase

Lipases

Lyase

None of these

Polymer formation from monomers starts by

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Condensation reaction between monomers

Coordination reaction between monomers

Conversion of monomer to monomer ions by protons

Hydrolysis of monomers

Dehydrohalogenation of alkyl halides produces

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Alcohol

Alkane

Alkene

Alkyne

Which of the following aqueous solutions have the lowest freezing point

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5.85% NaCI

6% urea

34.2 sucrose

All of them have same freezing points

Write the name of following compound

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5 - methyle - 2- hexene

2 - methyle hexene

4 - ethyle - 2 - methyle hexene

3 - ethyle - 3 - methyl hexene

The method in which alkanes prepared by alkyle halides in the presence of palladium - charcoal is

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Hydrolysis

Electrolysis

Hydrogenation

Hydrogenolysis

Vinegar made form cane sugar, now a days synthetically contains

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Citric acid

Lactic acid

Acetic acid

Palmitic acid

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