Question # 1

Ketones are prepared by the oxidation of.

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Primary alcohol

Secondary alcohol

Tertiary alcohol

None of these

Point out the element which forms super oxide

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Li

Na

K

C

Which one of the following macromolecules contains carbon, hydrogen, nitrogen and oxygen in it.

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Nylon-6,6

Terylene

Starch

Bakelite

A gas decolorizes alkaline KMnO4 but has no action with ammoniacal AgNO3, this gas may be

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C2H2

C2H4

C2H6

CH4

Which group when attached with benzene increases electron density of ring.

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-COOH

-NO

-CHO

-CH3

The word alkali is derived from which language

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Arabic

Greek

French

German

Which one of the following pairs of metal reactive directly with nitrogen

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Na and Mg

Li and Mg

Mg and Ca

Li and Be

S_N2 mechanism involves

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1st order kinetics

2nd order kinetics

3rd kinetics

zero order kinetics

Which one has yellow or orange cyrstalline ppt

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Acetone hydrazone

2, 4 DNPH

Ethanal oxime

Bisulphite addition product

How much does of methanol can cause death

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10-15 ml

15-20 ml

100- 250 ml

has no effect

Which compound shows maximum hydrogen bonding with water.

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CH3OH

C2H5OH

CH3-O-CH3

C6H5OH

Which one of the following is not use of chlorine.

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Formation PVC

Formation of mustard gas

Disinfectant and bleaching agent

Formation of sodium chloride

Kerosene oil is a mixture of hydrocarbon having carbon

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11 to 13

10 to 12

11 to 12

8 to 9

Whcih water will be considered as polluted water.

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High value of COD

Low value of COD

High value of DO

Low value of BOD

Which one of the following does not react with dilute sulphuric acid.

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Mg (OH)2

Mg

MgO

Mg(NO3)2

Which one of the following elements has no variable valency.

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Zinc

Iron

cobalt

Manganese

Which halogen will react spontaneously with Au(s) to produce Au³⁺

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Br₂

F₂

I₂

Cl₂

Which one is not an argillaceous material.

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Clay

Shale

State

Gypsum

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