Question # 1

The disposal of domestic refuse, commercial and industrial solid wastes are studied under the title

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Solid waste management

Waste management

Solid management

Semisolid management

The total K.E. of one mole of an ideal gas is given by:

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1/2 RT

3/2 RT

1/2 KT

3/2 KT

A complete food contains at least

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Three nutrients

Ten nutrients

Six nutrients

Ten nutrients

BOD is the oxygen demand with in day(s):

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Four

Two

Three

Five

Which of these polymers is an addition polymer?

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nylon 6,6

Polystyrene

terylene

epoxy resin

Dipole-dipole forces are present between:

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non-polar molecules

polar molecules

both polar and non-polar

none pf above

Which one of the following is not associated with SN2 mechanism

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100 % inversion of configuration

Tertiar alkyI halides

2nd order kinetics

Change of hy bridization from sp³ to sp² in transition state

Benedict solution gives a positive test with

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Glucose

Fructose

Sucrose

Starch

Adipic acid and Hexamethylenediammine polymerize to give

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Acrylic resins

Plastic fiber

Nylon-6, 6

None

Aluminium is in Group lll, its oxide will have the formula.

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AlO

AlO₂

Al₂O₃

Al₃O₂

The hydrocarbon with maximum B.P is

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CH4

C6H14

C4H10

C2H6

The hydrocarbon which is used as an illuminating agent

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Methane

Methene

Methyne

B & C

What is chrome yellow?

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Pbo

Pb₂O

PbCrO₄

Pb₃O₄

In a group form top to bottom, the hardness of alkali metals

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Remains unchanged

Increases

Decreases

None

Zwitter ion is ______ ion an amino acid

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Polar

Monopular

Dipolar

Non polar

A solution containing maximum amount of solute dissolved at a given temperature is called

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Saturated solution

Unsaturated solution

Supersaturated solution

Impure solution

Ecosystem is a smaller unit of

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Hydrosphere

Lithosphere

Biosphere

Atmosphere

When electricity is passed through molten electrolyte consisting of alumina and cryolite, 13.5 g of Al are deposited. The number of faradays of electricity passed must be

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2.0

1.5

1.0

0.5

Red P can be obtained form white P by

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Heating it with a catalyst in an inert atmosphere

Distilling it in an inert atmosphere

Dissolving it in CS₂and crysllizing

Melting it ad pouring the liquid into water

Fe⁺³and Mn²⁺are strong paramagnetic because the number of unpaired electrons in each is

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4

5

6

7

A compound of the formula C₄H₁₀O_{reacts with sodium and undergoes oxidation to give a carbonyl compound which does not reduce Tollen's reagent, the original compound is}

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Diethyl ether

n-Butyl alcohol

Isobutyl alcohol

sec-Butyl alcohol

Cathode rays drive a small paddle wheel placed in their path. This observation shows that

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Cathode rays travel in straight lines

Cathode rays are negatively charged

Cathode rays produce x-rays

Cathode rays are material particles having momentum

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