Question # 1

Nylon 6, 6 is a condensation polymer of

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Phthalic acid and hexa ethylene diamine

Adipic acid and hexaethylene diamine

Phthalic acid and glycerol

Adipic acid and glycerol

Acetone and Chloroform are soluble in each other due to

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intermolecular hydrogen bonding

ion-dipole interaction

instantaneous dipoles

dipole-induced dipole interaction

Which of the following is a non-typical transition element?

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Cr

Zn

Mn

Fe

Stalagmometer is used to measure

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the resistance to flow of a liquid

capillary action of a liquid

Meniscus of the liquid

surface tension of the liquid

Isozymes are the enzymes which:

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have similar chemical properties

have similar physical properties

have different physical and chemical properties

Styrene has empirical formula CH, and there is 92.2%C and 7.75% hydrogen. If molar mass is 104g mol¯, what will be integral multiple (n) to get molecular formula:

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2

4

6

8

Which of the following bonds is not present in NH4CL

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lonic bond

Covalent bond

Co-ordinate covalent bond

De-localized covalent bond

CFCs destroy ozone layer. How many ozone molecule a chlorine free radical can destroy?

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50000

20000

100000

10000

The specie that develops strongest hydrogen bonding with water

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НСООН

B.CH3CH2СООН

CH3СООН

CICH2COOH

Which of the following compounds is not known?

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SbCl

NCl3

Nl3

NCl5

Surface and ground water sources are contaminate by various human activity. 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

The free spaces between the metal atoms and its crystal lattice are called

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Valance spaces

Empty spaces

Interstices

None

Alkali metals in each period have

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Smallest size

Lowest IE

Highest IE

Highest electronegativity

I-Chloropropane has two isomers, it is an example of

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Chain isomerism

Position isomerism

Functional group isomerism

Metamerism

Which compound will not dissolve in H₂O

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C₆H₆

C₂H₅OH

CH₃CH₂CH₂OH

CH₃- OH

Phenols are derivative of:

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Alkanes

Alkenes

Alkynes

Benzene

In a compound an atom has negative oxidation state because

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Atom is negatively charged

Atom acts as cathode

Atom is more electronegative

Atom has lowest ionization energy

Which of the following is not related to transition metals

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They have a high tensile strength

They are ductile

They are malleable

They have low melting points

Which more acidic?

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o-cresol

p-nitrophenol

phenol

m-cresol

In cold countries ethylene glycol is added to water in radiators of cars during winter. It results in

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Lowering in b.pt

Reducing viscosity

Reducing specific heat

Lowering in freezing pt

Which one of the following substances is used to decolourizing agent

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Abestos

Animal charcoal

conc. H2SO4

Silica gel

Sulphuric acid generates nitronium ion by reacting with

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Nitric acid

Nitrogen gas

Nitrous acid

Potassium nitrate

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