Question # 1

Out of the elements of group VA, the highest energy is possessed by

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N

P

Sb

Bi

Which one of the following plastic is a thermosetting plastic.

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PVC

Polystyrene

Polyethene

Bakelite

Number of peptide bonds in tripeptide is

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1

2

3

4

Which three elements are needed for the healthy growth of plants.

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N,S,P

N, Ca, P

N,P,K

N,K,C

Which metal is redered passive by HNO₃due to formation of a film of metal oxide over the metal

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Pt

Sn

CO

Mn

In which substance phosphorus is not present.

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Yolk of egg

Bones

Apatite

Galena

Which is simplest amino acid

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Alanine

Protein

Lysine

Glycine

When ethyl bromide is heated with Ag2O the product formed is.

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Ethanol

Ethene

Ethanol

Di ethyl ether

In which compound, oxidation state of sulphur is +6

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H2S

H2SO4

H2SO3

SO3

In unimolecular reactions, the reaction completes in

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_{One step}

Two steps

Three steps

None of these

The reacts with halogen acids to form alkyl halide the process is known as.

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Halogenation

Hydrohalogenation

Hydrogenation

Dehydrohalogenation

Which reaction is disproportionate reaction

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Aldol Condensation

Cannizzaros's reaction

Haloform reactions

Acid-catalyzed reactions

The benzene molecule contains.

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Three double bonds

Two double bonds

One double bonds

Delocalized sigma electron charge

PCl3 reacts with water to form

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PH3

POCl3

H3PO4

H3PO5

Ca Mg3 (SiO3)2 is the composition of.

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Dolomite

Gypsum

Calcite

Asbestos

The process in when alkene are converted into carboxylic acid is known as

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Oxidation

Reduction

Hydrolysis

Hydration

The brown gas formed when metal reduces HNO₃

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N₂O₅

N₂O₃

NO₂

NO

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