Question # 1

There are _________ types of bonds.

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1

2

3

4

Sort out a compound from the following

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Air

Salt

Ice-cream

Iron

For diagnosis of goiter in thyroid gland we use

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Co-60

C-14

I-131

Sr-90

________________ proposed that matter is composed of small particles.

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Greek

English's

Russian

Nil

The shape of H2O is ________________

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Angular

Linear

Triangular

All of above

The no. of electrons in the valence shell of noble gases are

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2

4

8

2 or 8

The reaction of ionic compound is very ________________ in solution.

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Slow

Fast

Medium

Nil

The bond between two atoms will be ionic if the difference between their electronegativities is:

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Less than 1.7

Greater than 1.7

Zero

Less than 1.2

Metal can form ions carrying charges:

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Uni-positive

Di-positive

Tri-Positive

All of them

Bucky balls was discovered in ________________

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1965

1975

1985

1995

Gain of electrons in a reaction is called ____________reaction.

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Oxidation

Reduction

Both

Nil

Lewis acid-base concept have the following characteristics except:

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formation of an adduct

Formation of a co-ordinate covalent bound

Donation and acceptance of an electron pair

Donation and acceptance of a proton

The unit of molar concentration is:

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moldm^-3

moldm⁺³

molcm^-3

molcm⁺³

The % age of carbon is coal is

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40-60

50-70

40-80

40-90

Composition of carbon in kerosene oil is.

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C₁₀-C₁₂

C₁₂-C₁₂

C₁₆-C₁₈

C₃₀-C₃₀

The functional group- COOH is found in

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Carboxylic acid

aldehydes

alcohals

easter

Phenolphthalein produces red colour in

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Acid

Base

Both a and b

None of these

Which is the essential sugar found in milk?

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Maltose

Lactose

Galactose

Starch

Latin word 'Acidus' means:

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sweet

salty

sour

bitter

Uric Acid is present in

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Apple

Fats

Urine

Grapes

Glucose and fructose are;

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trioses

tetroses

pentoses

hexoses

Water of crystallization is responsible for.

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Melting points of crystals2

Boiling point of crystal

Shape of crystal

Transition points of crystals

The molarity of 2% w/v NaOH solution is

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2

0.25

0.05

0.5

The paramagnetic behaviour of oxygen is well explaned on the basis of.

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M.O Theory

N.B Theory

VSEPR Theory

CF theory

The boiling point of water at Murree Hills.

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90^oC

98^oC

100^oC

120^oC

How many sigma and pi bonds are present in C2H2.

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one sigma and two pi

two pi and one sigma

Two pi and three sigma

Three pi and two sigma

The distillation of liquid under reduced pressure is called.

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Destructive distillation

Vaccum distillation

Simple distillation

Fractional distillation

An atomic orbital has l =1 , m =+1, 0, -1, n = 3 than which one of the following atomic orbital has such values.

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2s

2p

3p

3d

The molal boiling point constant is the ratio of elevation of boiling point to

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Molarity

Mole fraction of solvent

Molality

Mole fraction of solute

At constant temperature in a given mass of and ideal gas.

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The ratio of pressure and volume remains constant

Volume always remains constant

Pressure always remains constant

The product of pressure and volume remains constant

The voltage Nickel Cadmium cell is

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1 V

1.2 V

1.4 V

1.6 V

Which is not use of electrochemical series.

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Feasibility of reaction

Measurement of EMF of cell

Comparison of reactivity with water or acids

Determination of atomic and ionic radii

Which properties of liquid is measured by polarimeter

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Conductance

Refractive index

Optical activity

Change in volume

Which ether is symmetrical in nature.

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Methyl ethyl ether

Diphenyl ether

Methyl n propyl other

Methoxy benzene

What are the total numbers of periods in the modern periodic table

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3

5

7

8

Cyclic structure of benzene was proposed by

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Dewar

Faraday

Down

Kekule

Zwitter ion is

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Dipolar ion

Amino acid with two amino groups

Amino acid with two carboxylic acid group

A synthetic amino acid

Which one of the following oxide is brown in colour.

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NO

NO2

N2O

N2O3

Which one the following a dihydric alcohol

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Ethanol

Cyclo hexanol

Glycerol

Glycol

Synthetic rubber is made by polymerization of.

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Chloroform

Acetylene

Divinylactylene

Chloroprene

The fiber which is made from acrylonitrile as monomer

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PVC

Polyester fiber

Rayon fiber

Acrylic fiber

Acetaldehyde undergoes, aldol condensation in the presence of.

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dil HNO3

DIL NaOH

dil HCl

Conc. H2SO4

The presence of a double bond in a compound is the sign of.

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Saturation

Unsaturation

Substitution

None of these

What type of reaction occurs between ethene and hydrogen.

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Addition

Substitution

Oxidation

Dehydration