Question # 1

Van der Waal's forces exist in

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Polar compounds

Non-polar

Covalent

All types of atoms and molecules

Which one of the following statements about glucose and sucrose is incorrect

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Both are soluble in water

Both are naturally occurring

Both are carbohydrates

Both are disacharides

Deep sea divers take oxygen with:

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A heavy gas

A lighter gas

An inert gas

All of above

A system absorbs 100 kJ heat and performs 50 kJ work on the surroundings. The increase in internal energy of the system is

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50kJ

100 kJ

150kJ

5000 kJ

The oxidation of 1 - propanol in the presence of H2SO4, +K2Cr207 produces final product

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Acetaldehyde

Propanal

Acetone

Propanoic acic

The element which shows highest binding energy

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V

T

So

Cr

Equal volume of all gases at same temperature and pressure contain number of molecules

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different

multiples

equal

in fractions

Select the name of reedy plant from which word paper is derived:

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Sunflower

Water hyacinth

Papyrus

Rose

A pressure of 1Nm^-2 is equal to:

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one bar

one pascal

stalagmometer

one aomosphere

The highest temperature at which gas can be liquefied and above which liquefaction is impossible is called

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Boiling temperature

Upper consulate temperature

Transition temperature

Critical temperature

The ozone depletion in the stratophere is mainly due to the reaction of ozone with

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Freons

CFCs

Both A and B

None

In which of the following cases, the reaction goes farthest to completion

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K = 10³

K = 10^-2

K = 10

K = 10⁰

The Electro-negatively difference for ionic bond must be greater than

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1.6

1.7

1.8

1.0

In which molecule carbon atom is sp²hybridized

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CH₄

C₂H₄

C₂H₂

None of the above

Which of the following is not present in nucleotide?

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Guanine

Cytosine

Adenine

Tryoxine

Sodium hexametaphophate is known as

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Calgon

Permutite

Natalite

Nitrolim

The alkali metals form

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Ionic bond

Covalent bond

Co-ordinate bond

H-bond

The total number of transition elements is

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10

14

40

50

Reaction of acids with alcohols is also known as

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Esterification

Saponification

Alkalization

None

Chemical equilibrium involving reactants and products in more than one phase is called

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Static

Dynamic

Homogeneous

Heterogeneous

Calcium acetate when dry distilled gives

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Formaldehyde

Acetaldehyde

Acetone

Acetic anhydride

Which polymerization is free radical machanism based

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Addition

Condensation

Both a and b

None

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