Question # 1

What is clinker

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Roasted calcareous material

Roasted argillaceous material

Roasted calcareous and argillaceous material

Roasted gyposum

To product aldehyde group against alkaline oxidizing agent.

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It is reduced in the presence of catalyst

An acetal is formed

It is oxidized

It is treated with aqueous NaBH4

Which isomerism is not found in alkenes.

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Chain isomerism

Positional isomerism

Geometrical isomerism

Metamerism

Aromatic hydrocarbons are the derivatives of

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Normal series of paraffins

Alkene

Benzene

Cyclohexane

Which one of the following compounds of lead is red in colour

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PbO

Pb2O

Pb3O4

PbCO3

Which one of the following gases is used in welding purpose usually

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Methane

Ethane

Ethene

Acetylene

Which compound show hydrogen bonding

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C₂H₆

C₂H₅Cl

CH₃OCH₃

C₂H₅OH

Formalin is

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10% solution of formaldehyde in water

20% solution of formaldehyde in water

40% solution of formaldehyde in water

60% solution of formaldehyde in water

Which is simplest amino acid

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Alanine

Protein

Lysine

Glycine

The most electronegative element of group V-A is

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N

P

Sb

Bi

The element of 2nd period, which has highest ionization energy from the following is

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Be

C

N

O

Which element has lowest melting point

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Beryllium

Magnesium

Calcium

Barium

The conversion of ethanol to ethene is an example of.

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Dehydration

Hydration

Hydrogenation

Fermentation

The word paper is derived from the name of which reedy plant

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Rose

Sun flower

Papyrus

Water

For which mechanisms, the first step involved is the same.

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E2 and E2

E2 and SN2

SN1 and E2

E1 and SN1

Which one of the following methods is used for the preparation of ether.

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Kolbe's reaction

Frankland reaction

Williamson synthesis

Down's process

Water will be considered polluted if it has dissolved oxygen.

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3ppm

4ppm

5ppm

6 ppm

Ethyne on oxidation with strong alkaline KMnO4 changes to

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Ethyl alcohol

Acetaldehyde

Vinyl alcohol

Glyoxal

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