Question # 1

Which of the following is a typical transition metal

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Sc

Y

Ra

Co

Essential amino acids are those which

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Are present in every protein

Must be supplied to body through diet

Contain two carbocyclic acid and one amino group

Is syntherised by our body

Which of the following are mono-saccharides

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Fructose

Sucrose

Stach

Cellulose

Co-ordination number of Cu in

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Zero

Two

Four

Six

When methane reacts with Cl2 is commonly known as

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Mustard gas

Laughing gas

Phosgene gas

Bio gas

Which one of the following is inorganic polymer

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Graphite

Rubber

DNA

Protein

The avoid the formation of toxic compounds with chlorine which substance is used for disinfecting water

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KMnO₄

O₃

Alums

Chloramines

Which catalyst is used in contact process

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Fe₂O₃

V₂O₅

SO₃

Ag₂O

Reverse of esterification is known as

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Trans esterification

Saponification

Hydrolysis

Neutralization

Industrially ethanal is prepared by air oxidation of.

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Ethane

Ethene

Ethyne

Acetic acid

Which is the least reactive of all the alkali metals

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Li

Na

K

Cs

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

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PbO

Pb2O

Pb3O4

PbCO3

Which element is present in chlorophyll

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Ca

Mg

K

Be

First organic compound prepared in laboratory was.

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Glucose

Methane

Urea

Alcohol

Which nitrogen fertilizer make the soil acdic.

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Calcium nitrate

sodium nitrate

Potassium nitrate

Ammonium nitrate

An sp3- hybrid orbital contains.

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25% s- characters

50% s- characters

75% s- characters

100% s - characters

Which isomerism is not found in alkenes.

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Chain isomerism

Positional isomerism

Geometrical isomerism

Metamerism

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

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Nylon-6,6

Terylene

Starch

Bakelite

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