Question # 1

A certain current liberate 0.5 g of hydrogen in 2 h. How many grams of copper can be liberated by the same current flowing for the same time in a copper sulphate solution?

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12.7 gm

15.9 gm

31.8 gm

63.5 gm

Fertililzer are made by

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Nature only

Artificial methods only

Both artificial and natural methods

None of the above

The structure of XeF6

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Distorted octahedral

Pyramidal

Tetrahedral

None of the above

Inter molecular forces in solid hydrogen are

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Covalent forces

Van der Waal forces or London dispersion forces

Hydrogen bonds

All of these.

The dimension of rate constant of second order reaction involves

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Neither time nor concentration

Only time

Time and concentration

Time and square of concentration

At room temperature formaldehyde is

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Gas

Liquid

Solid

None of the above

Ethanol containing some methanol is called

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Absolute spirit

Rectified spirit

Power alcohol

Methylated spirit

The kinetic theory of gases predicts that total kinetic energy of a gaseous assemble depends on

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Pressure of the gas

Temperature of the gas

Volume of the gas

Pressure, temperature, and volume of the gas.

How many moles of Helium gas occupy 22.4 L at 0°C at a atm. Pressure?

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0.11

0.90

1.0

1.11

Vital force theory was rejected by

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Berzelius

Kolbe

Wholer

Lavoiser

The rate at which a substance reacts depends on its

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Atomic weight

Equivalent weight

Molecular weight

Active mass

The percentage of oxygen in NaOH is

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40

60

8

10

The following has zero valency

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Na

Be

Al

Kr

Hybridization explain the ----------- of orbitals

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Type of Bonding

Shapes

Shape and Type of bonding

None of above

Which of the following substances is used as an antiknock compound?

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Tetraethyl lead

Lead tetrachloride

Lead acetate

Ethyl acetate

Which is the most amphoteric?

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Na₂O

MgO

Al₂O₃

CaO

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