Question # 1

the percentage of nitrogen in NH3 is

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46%

60%

82%

100%

Fungicides are teh pesticides which

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Control the growth of fungus

Kill insects

Kill plant

Kill herbs

Which element among the following belongs to Group IV A of the Periodic table.

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Barium

Iodine

Lead

Oxygen

The oxides of metal sare generally

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Acidic

Basic

Neutral

Amphoteric

Number of peptide bonds in tripeptide is

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1

2

3

4

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

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PbO

Pb2O

Pb3O4

PbCO3

Which reaction is disproportionate reaction

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Aldol Condensation

Cannizzaros's reaction

Haloform reactions

Acid-catalyzed reactions

A caboxylic acid contains

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a hydroxyl group

a caboxyl group

a hydroxyl and carboxyl group

a carboxyl and an aldehyde group

Which one of the following gases exist in monoatomic form.

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Ozone

Nitrogen

Krypton

Phosphine

The quality of petroleum is determined by

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Decane number

Octane number

Hexane number

Gold number

Phosphorus helps in the growth of

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Root

Leave

Stem

Seed

The reaction between concentrated H2SO4 and glucose give carbon and water. In this reaction H2SO4 acts as.

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An acid

An oxidising agent

Dehydrating agent

A reducing agent

Formula of marsh gas is

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CH₄

C₂H₆

C₃H₆

C₄H₁₀

The yellowish colour in photochemical smog is due to the presence of.

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NO

NO2

SO2

CO2

Which elements are deposited at the cathode during the electrolysis of brine in diaphragm cell

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H₂

Ba

Ra

Rn

Which halogen will react spontaneously with Au to produce Au3+

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Br2

F2

I2

Cl2

Correct order according to atomic size in the following is

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Na > K

Be > Mg

O > N

Cl > F

Which one of the following products is not formed when acetic acid reacts with PCl5

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C2H5Cl

HCl

POCl3

CH3COCl

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