Question # 1

Classical smog occurs in palces of

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Excess SO₂

Low temperature

High temperature

Excess NH₃

d-block elements are also called :

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alkali metal

Alkaline earth metals

Transition elements

Electron deficient elements

Which of the following statements is most appropriate about effective nuclear charge? It depends upon

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The shielding constant

The atomic number

The charge on the nucleus

Both the nuclear charge and the shielding constant

Which of the following solution has the highest boiling point

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5.85% solution of sodium chloride

18.0% solution of glucose

6.0% solution of urea

All have the same boiling point

How many monochlorobutanes will be possible on chlorination of n-butane?

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1

2

3

5

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-1.10 V

+1.10 V

-0.42 V

+0.42 V

Which one of the following has no units of its K_cvalue

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The colour of a transition metal complex is due to d-d transition The colour of the complex is the complementary of the colour absorbed. Thus [Ti(H₂O₆]³⁺abosrbs yellow light and transmits blue and red colours therefore the solution of titanium complex appears

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Blue

Red

Yellow

Mixture of blue and red or violet

In a primary alkyl halide, the halogen atom is attached to a carbon which is further attached to

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Only one carbon atom

Two carbon atoms

Three carbon atoms

one or no carbon atom

The basic difference between synthetic and natural fertilizer is in their

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Rae material

Crop application

Usage

Shapes

Isopropyl alcohol on oxidation gives

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Acetone

Ether

Ethylene

Acetaldehyde

Which one of the following pentafluorides cannot be formed?

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PF₅

AsF₅

SbF₅

BiF₅

Which class of compound is more reactive

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Alkane

Alkene

Alkyne

None

The formula of lime stone is

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CaCl₂

MgCO₃

Na₂CO₃

CaCO₃

95% alcohol is called

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Rectified spirit

Spirit of wine

Spirit

Methylated

The nitrogen present in some fertilizers helps plants

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To fight against disease

To produce fat

To undergo photosynthesis

To produce protein

Polyester resins have special use in:

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Clothing

Paints

Emulsion

Floor covering

Without proper suction,filtration is:

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Rapid process

Fague process

Slow process

Useless process

The unit of rate constant is the same as that of the rate of reaction in :

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First order reaction.

Second order reaction.

Zero order reaction.

Third order reaction.

The maximum number of electrons in the outermost shall of s-black elements is

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One

Two

Three

Four

Use of glycol as anti freeze in the automobile is an important application of

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Colligative property

Raoult's law

Fractional crystallization

Prrhenivs law

The bond order for He₂molecule is

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zero

1/2

1

2

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Rate is independent of concentration of water since it is in excess

Rate is independent of concentration of ester since it is in exces

Rate depends upon the concentration of acid catalyst added

Rate = k[CH₃COOC₂H₅]^1/2[H₂O]^1/2

Silver oxide battery has a voltage of

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2.0 V

1.5 V

2.5 V

1.0 V

Benzene reacts with chlorine to form benzene hexachloride in presence of

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Nickel

AlCl₃

Bright sunlight

Zinc

Strong reducing agents gave

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Greater positive value of standard reduction potential

Greater negative value of standard reduction potential

Lesser positive value of standard reaction potential

None of these

How many isomeric disubtituted products are obtained by the introducing of second group in the ring

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Two

Three

Four

None

Which is not the condition for the formation of smog

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There must be sufficient NO gas

There must be sunlight to help photo chemical reaction to take place

Air must be blowing swiftly

There must be SO₂in the air

If we remove one hydrogen atom from an alkane we obtain a group called

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Acetyle group

Formyle group

Alkyle group

Ketyle group

Which of the following is responsible for depletion of the ozone layer in the upper strata of the atmosphere?

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Fullerences

Freons

Polyhalogens

Ferrocene

Benzophenone can be converted into benzene using

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Fused alkali

Anhydrous AlCl₃

Sodium amalgam in water

Acidfied dichromate

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