Question # 1

Which is not true in case of an ideal gas?

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It cannot be converted into a liquid

There is no interaction between the molecules

All molecules of the gas move with same speed

At a given temperature P'V is proportional to the amount of the gas

Which of the following is the simplest form of matter?

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Gaseous state

Liquid state

Solid state

All of above

According to kinetic theory of gases kinetic energy depends on

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Temperature

Collision

Pressure

Atomic number

Contamination of Hg comes into surface water from chlor industrial wastes. Why is Hg Toxic.

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It attaches to sulphur of the disulphide link

Hg is a heavy metal

Hg is liquid at room temperature

Hg is non reactive chemically

Large molecule formed by combination of smaller units these smaller units are called:

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Polymers

Macromolecule

Micromolecule

a & b

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

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4

6

8

10

Which of the following successive ionization energies belong to a Group ll element?

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320,600,1110,1700,5650,

577,1820,2740,1160,14800,

428,3070,4600,5860,7990

736,1451,7740,10500,13600

Which one of the following enzymes brings about the hydrolysis of fats?

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urease

maltase

zymase

lypase

Rancidification of facts and oils is due to:

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oxidation reaction

hydrolysis reaction

both a and b

hydrogenation reaction

Biochemical oxygen demand (BOD) is the capacity of organic matter in natural water to consume oxygen with in a period of

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2 day

6 day

5 day

7 day

The distribution of energies among the molecules of gases was studied by:

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Maxwell

Coulomb

Newton

Boltzmann

The detection of functional group is called:

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Numerical analysis

Qualitative analysis

Quantitative analysis

Combustion analysis

Which statement explains the observation that magnesium hydroxide dissolve in aqueous ammonium chloride, but not in aqueous sodium chloride

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The ionic radius of the NH₄⁺ion is similar to that of Mg²⁺but not that of Na⁺

NH₄Cl dissociates less fully than NaCl

The ions Na⁺and Mg²⁺are isoelectronic (have the same number of electrons)

The ion NH⁺₄acts as an acid

Which is not a calcareous material

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Lime

Clay

Marble

Marine shell

If 5.85 of NaCI are dissolved in 90g of water the mole fraction of NaCI is

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0.1

0.01

0.2

0.0196

Two solutions of NaCl and KCl are prepared separately by dissolving 0.1 M of the solute in water. Which of the following statements is not true for these solution

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KCl solution will have higher boiling point than NaCl solution

Both the solutions have same boiling

KCl and NaCl solution possess same vapour pressure

KCl solution possess same freezing point at NaCl solution

Main cause of reducing map is:

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Combustion of coal

NO and NO₂

Un-Burnt Hydrocarbons

All of these

If an electrophile attacks then ______ bond breaks first

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C - H

O - H

C - O

None of these

A carbon atom carrying a postitive charge and attached to three other atoms of groups is called

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Caronium ion

Carbanion

Oconium ion

Carba ion

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Temperature is increased

Pressure is increased

HCl is added

HCl is removed

Dehydrohalogenation of alkyl halides give

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Alkanes

Alkenes

Alkynes

Alkdehyde

If the ionic product of a solution is less than the solubility product, the solution is

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Supersaturated

Unsaturated

Ideal

Saturated

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