Question # 1

The conversion of an halide of an alkene is an example:

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addition reaction

substitution reaction

elimination reaction

oxidation reaction

When two ice cubes are pressed together they unite to form one cube. which of the following forces is responsible for holding them together?

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H-bonding

Covalent bonding

van der waal's forces

dipole-dipole interaction

On hydrolysis sucrose gives

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Glucose and maltose

Fructose and lactose

Fructose and maltose

Glucose and fructose

During thunderstorms, water dissolves

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Dust particles

HCl

Nitric acid

Clouds

For N2: +3H2<--------> 2NH3, if Kc is 1 than value of Kp at 273K would be

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1/22.414

1/(22.414)2

22.414

11.207

Which of the following statement about ribose is incorrect

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Poly hydroxyl compound

It is an aldo sugar

Contain six carbon atoms

It exhibit optical activity

Surface and ground water sources are contaminated by various human activities. Which of the following is not a human activity that causes contamination in fresh water

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Rain

Live stock waste

Oil leaks and spills

Disposal of industrial effluents

If the reaction "P+Q→R+S' is deseribed as being of zero order with respect to P, it means that

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P is catalyst in this reaction

P molecules do not possess sufficient energy to react

The concentration of P does not change during the reaction

The rate of reaction is independent of the concentration of P

One of the environment problem is the formation of oil slicks when oil is spilled from tankers in sea water.

Which treatment is suitable to remove oil slicks

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blow air

add Na₂CO₃

use a specially made sorbent having fluorine trapped in it

Use a sorbent having Al₂O₃trapped in it

Which of the following has isomorphous structure with MgO

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NaF

S

Sn

N

Protein may have

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Primary structure

Secondary structure

Tertiary structure

All of these

Poly hydroxyl compounds of aldehyde and ketones are:

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Carbohydrates

Proteins

Fats

Lipids

In Friedal-Craft's alkylation besides AlCl3 the other reactants are

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C6H6 + NH3

C6H6 + NH4

C6H6 + CH3Cl

C6H6 + CH3COCl

Which one of the following is not an alkali metal

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Francium

Caesium

Rubidium

Radium

Which teat is not given by both glucose and fructose

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Give yellow ppt of CHl₃with alkaline aqueous iodine

With 2, 4-DNPH give yellow ppt of hydrazone

Evolve H₂gas with Na metal

Oxidised with [Ag(NH₃)₂]⁺i.e. Tollen's reagent

The oxidation number of Ni in [Ni(CO)₄] is

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+1

0

+4

-4

Which is used as an antifreeze?

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Glycol

Ethyl alcohol

Water

Methanol

In exothermic reversible reaction increase in temperature shift the equilibrium to :

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Remains unchanged.

Product side.

Reactant side.

None of above.

Electrons arranged in orbitals according to the increasing order of their n + l values, this rule is named as

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Hund's rule

Heisenberg's principle

Paulit exclusion principle

Auf bau principle

Which of the following method is most appropriate for the manufacture of methane?

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By reduction of CH2CL2

Wurtz reaction

Liquification of natural gas

None of these

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Cu

H

N

O

Dipole moment of CO molecule is:

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0.0

1.112 D

0.112 D

2.112 D

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