Question # 1

Benzene has pi electron

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2

4

6

8

Albumin, globin and casein are

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Milk proteins

Plasma proteins

Egg proteins

Meat proteins

D-block elements are also called

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Non-typical transition element

Outer transition elements

Abnormal transition elements

Inner transition

In which of the following compounds H-binding is not present?

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ethanol

ether

water

ammonia

The protein which only yield amino acids and their derivatives

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Simple proteins

Complex proteins

Derived protein

All of these

If v is the volume of one molecule of a gas under given conditions, then Van der Waals constant b is (N_Ais Avogadro number)

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Which of the following reactants will be required to form ethene from ethyl chloride

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_{Alcoholic KOH}

Alkaline KMnO4

Aqucous KOH

Aqucous NaOH

Tertiary alcohols are the easiest to dehydrate because

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They form stable carbocation

They have less hydrogen

They have bigger size

They are polar

Which is the polymer that has amide linkage in its structure

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PVC

Poly ethene

Polyester

Nylon

Which of the following solids does not have a covalent bond?

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Silica

Copper

Diamond

Graphite

The normal amount of overhead ozone is about in DU:

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150

250

350

450

The ph of 10-3 mole dm-3 of an aqueous solution of H₂SO₄ is :

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3.0

2.7

2.0

1.5

Which of the following statement about electron affinity of two elements is correct

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Carbon has greater than oxygen

Sulphur has less than oxygen

Iodine has greater than bromine

Bromine has less than chlorine

Those compound which have any atom other than C as member of rings are called as

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Monocyclic

Hetrocyclic

Aliphatic

Both a and b

Major component in cement is :

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SiO₂

Lime

Al₂O₃

MgO

When a bond breaks

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Heat is evolved

Heat is absorbs

No change in heat contents takes place

Temperature increases

A single free chlorine radical can destroy ozone molecules upto:

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100000

100

1000

10000

Which is litharge or massicot?

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PbO

Pb₂O

Pb₃O₄

PbO₂

Which of the following reacts with chloroform and base to form phenyl isocynaide?

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Nitrobenzene

Phenol

Chlorobenzene

Aniline

The number of isotopes of gold is

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3

1

2

4

Phosphide ion has the electronic structure similar to that of

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Nitride ion

Fluoride ion

Sodium ion

Chloride ion

Which of the following pair of atomic numbers represents s-block elements?

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7, 15

6, 12

9, 17

3, 20

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