Question # 1

In NaCl cyrstal Na⁺ion is surrounded by how many ions of Cl^-

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4

6

8

10

If the temperature is inereased of following reaction, then will go in N2 +3H2 <---------> .2NH3, ∆H= -Ve

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Forward direction

Reverse direction

Remain constant

Cannot be predicted

The boiling of water may be 120°C, when the external pressure is

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greater than 760 torr

less than 760 torr

equal to 760 torr

variable

Which of the following may be called as London dispersion forces?

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instantaneous dipole-induced dipole forces

dipole-dipole forces

ion-dipole forces

dipole-dipole forces

The study of which one of the followings guides to the mechanism of the reaction

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Order of reaction

Rate of reaction

Half-life period of reaction

Rate determining step

Keeping the temperature constant, if the gas is expended:

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Kinetic energy of molecules will increase.

Number of gas molecules increases.

Temperature will increase.

Pressure will decrease.

A graph is plotted, P on x-axis and V on y-axis for a given mass at constant temperature, we shall get:

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a curve with different peaks

a curve called isotherm

straight line parallel to x-axis

a straight line

Solid waster of the city is disposed off by dumping in a landfill. Which of the following gas is produced in the landfill

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Oxygen

Chlorine

Hydrogen sulphide

Hydrogen chloride gas

2-Propenol, on rearrangement, yields

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Propanal

Propanone

2-propano

Both A and B

Molar mass of high molecular w.f. polymers ranges from:

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1000 to 10000

10000 to 100000

100000 to 1000000

1000 to 1000000

Atmosphere consists of gasses:

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N₂

O₂

Ar

All

The pH range of the acid rain is:

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7 - 6.5

6.5 - 6

6 - 5.6

Less than 5

A white precipitate ofsilver chlorideimmediately formed on additionof :

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Silver nitrate solution to sodium chloride solution.

Silver chloride solution to sodium nitrate solution.

Silver nitrate solution to potassium chloride solution

Silver nitrate solution to hydrogen chloride solution.

Reaction of Grignard's reagent with formaldehyde gives:

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pri-alcohol

sec-alcohol

ter-alcohol

carboxylic

Which of the following fibres are made of polyamides?

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Dacron

Orlon

Nylon

Rayon

Newspaper can be recycled again and again by how many times?

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2

3

4

5

Splitting of spectral lines when atoms are subjected to strong electric field is called:

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Zeeman effect.

Stark effect

Photoelectric effect.

Compton effect.

The de-Brogile wavelength of a particle with mass 1g and velocity 100 m/s is

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6.63 x 10^-33m

6.63 x 10^-34m

6.63 x 10^-35m

6.65 x 10^-35m

Raney - nickel is the alloy of Ni with

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Pt

Al

Cu

Pd

Rectified spirit contains alcohol about:

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80%

85%

90%

95%

Which reaction is example of nucleophilic substitution

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The number of moles of solute dissolved per dm³of the solution is called :

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Normality.

Molarity.

None of above.

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