Question # 1

One of the following is not type of polymer

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homopolymer

copolymer

heteropolymer

terpolymer

In a saturated solution of AgCl, the molar concentration of Ag+ and Cl- is 1.0x10(-5)M each. What is the value of Ksp

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1.0x10(-5)

1.0x10(-15)

0.1x10(-5)

1.0x10(-10)

Which one of the following statements about diamond is not true?

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the coordination number of carbon atoms is 4

diamond is an isotpe of graphite

diamond has a high melting point

diamond has a rigid tetrahedral, structure

Acetylide can give back ethyne upon treatment with

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water

strong base

dil. Acid

weak base

The pressure exerted by gas molecules is due to their

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collisions

densities

masses

kinetic energy

When HCI gas is passed through saturated solution of rock salt, the solubility of NaCl

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Increases

May increase or decrease

Decreases

None of these

The number of NaCI molecules in unit cell of its crystal is

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2

4

6

8

Potable water is considered to be

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Safe for human consumption

The ground water

The surface water

Now safe for human consumption

Under which condition CO has the maximum molar volume

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high T and P

Low T and High p

high T and low P

Low T and low P

Half of the mass of atmosphere is concentrated above earth at the hieght of

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40 Km

25-28 Km

5-6 Km

100 Km

The optimum pH value for the enzyme pepsin is

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10

1.4

8

6

The addition of HCN to carbonyl compounds is an example of

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Nucleopihlic substituion

Electrophilic addition

Nueleophilic addition

Electrophilic substitution

Which property depends on the state of system

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Enthaply

Free energy

Entropy

All these

Which of the following is not charged particle

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Proton

Electron

Neutron

Hydrogen nucleus

Phenol is heated with CCl₄and alkaline KOH when salicylic acid is produced.The reaction is known as

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Frledel-Craft reaction

Riemer-Tiemann's reaction

Rosenmund's reaction

Sommelet reaction

Which one of the following is a product of the reaction between C₆H₅CH₂OH and CH₃COCI

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C₆H₅OCOCH₃

C₆H₅CH₂CI

C₆H₅CH₂OCOCH₃

C₆H₅CH₂COCI

Bronze is an alloy which contains

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60% cu

70% cu

80% cu

99% cu

Which is independent of temperature

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Molarity

Molality

Normality

Mole fraction

Which compound is more soluble in water?

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C₂H₅OH

C₅H₅OH

CH₃OCH₃

n-Hexanol

Industrial alcohol may be denaturated by the addition of

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Methyl alcohol

Acetone

Pyridine

Any of the above reagent

Le-chatlier's principle is applied on the reversible reaction in order to

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Determine the rate of reaction

Predict the direction of reaction

Determine the extent of reaction

Find best conditions for favorable shifting the position of equilibrium

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1

2

3

4

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