Question # 1

Peroxyacetyl nitrate (PAN) is a irritant to human beings and it affects

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Eyes

Ears

Stomach

Nose

Which one of the following is inorganic fertilizer.

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Manure

Urea

Ammonium nitrate

All of these

Which compound is called universal solvent

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CH₃OH

C₂H₅OH

CH₃O CH₃

H₂O

Methyl alcohol can be distinguished from ethyl alcohol by

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Action of Cl2

Action of NH3

Dissolving in H2O

NaOH +I2

Which one of the following is the macronutrient for plants.

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Boron

Zinc

Calcium

Nitrogen

Which substance is used for silvering of mirror.

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Acetaldehyde

Ethanol

Ethylene glycol

Acetone

Micronutrients for plant are those which

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Are required in very large amount

Are required in very small amount

Are produced from plants in very small amount

Retard the growth of plants

Which one of the following is formed when ethyne is heated in copper tube at 300 ^oC

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Ethene

Ethane

Benzene

Cyclohexane

The process used to improve quality of gasoline

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Thermal Cracking

Reforming

Combination

Steam Cracking

An sp3- hybrid orbital contains.

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25% s- characters

50% s- characters

75% s- characters

100% s - characters

Vinyl chloride when boiled with alcoholic KOH , gives

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Acetylene

Ethylene

Ethene

Ethyl alcohol

Which substance is used for denaturing of ethanol

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Methanol

Acetone

Pyridine

All

f - block elements are also called.

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Non typical transition elements

Outer transition elements

Inner transition elements

None of true

Which hydride is intermediate in nature.

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NaH

BeH2

NH3

HCl

Secondary alkyl halides are those in which halogen atom is attached with a carbon atom which is further attached to.

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One beta carbon

Two beta carbon

Three beta carbon

Four beta carbon

Chlorine heptoxide (CI₂O₇) reacts with water to form

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Hypochlorous acid

Chloric acid

Perchloric acid

Chlorine and oxygen

Number of elements in the first period of the periodic table is

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2

8

14

18

Synthetic rubber is made by polymerization of.

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Chloroform

Acetylene

Divinylactylene

Chloroprene

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