Question # 1

pH of an aqueous solution is 3.0 at 25°C. The hydrogen ion concentration in the solution would be

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0.001

0.01

0.0001

10(-5)

Which of the following gases diffuse quickly:

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N₂

NH₃

CO₂

Cl₂

Steroid belong to the family of:

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protein

enzyme

lipids

carbohydrates

General gas equation is combination of

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Boyle s law

Avogadro s law

Charles s law

All of these

The substance used in the soil to provide element.Which are essential for plant growth are known as:

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manures

fertilizers

pesticides

additive

The structure of a polymer depends upon how the monomer-repeating unit joins to makes a polymer, What is not the type of structure of a polymer?

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synthetic polymer

linear polymer

branched

cross linked or inter connected polymer

Hydration of ethene is an example of

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Electrophilic addition

Electrophilic substitution

Nucleophilic addition

Nucleophilic substitution

Grey tin crystals belong to

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tetragonal

cubic

orthorhombic

rhomtrohedral

Among solids,the highet melting point is exhibited by

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Covalent solids

Ionic solids

Pseudo solids

Molecular solids

Which is not an air pollutant

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N₂

CO

NO

N₂O

Ecosystem is a smaller unity of

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Nydosphere

Biosphere

Lithosphere

Attmosphere

Micro-nutrients are required in quantity ranging from

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4g-40g

6g-200g

6Kg-200Kg

4Kg-40Kg

Two elements whose electronegativities are 1.2 and 3.0, the formed between them would be

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Ionic

Covalent

Coordinate

Metallic

Synthetic rubber is made by polymerization of

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Chloroform

Acetylene

Divinlacetylene

Butene

In Friedal-Craft's alkylation besides AlCl3 the other reactants are

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C6H6 + NH3

C6H6 + NH4

C6H6 + CH3Cl

C6H6 + CH3COCl

The base used in Cannizzaro's reaction is

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NaOH

KOH

CHI₃

All of these

The measurement of degree of disorder is

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Internal energy

Enthalpy

Entropy

None

Which carbohydrates is an essential constituent of plant cells?

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Starch

Cellulose

Sucrose

Vitamins

______ is called milk of magnesia

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NaOH

KOH

LiOH

None

Content of carbon in steel is:

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0.12 to 0.25%

0.25% to 2.5%

3.0 to 3.5%

4.0 to 4.5%

Polyanion formation is maximum in

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Nitrogen

Oxygen

Sulphur

Boron

Under what condition of temperature and pressure the formation of atomic hydrogen from molecular hydrogen will be favourd

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High temperature and high pressure

Low temperature and low pressure

High temperature and low pressure

:Low temperature and high pressure

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