Question # 1

Which of the following tends to approach ideal gas like behavior at R.T.P

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ammonia

neon

carbon dioxide

chlorine

The addition of HCI to ethene gives?

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Chloroethane

1,2-dichloroethane

1.1-dichloroethane

2-chloroethane

Irreversible precipitation of protein caused by heating is called

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Polymerization

Denaturing

Inversion

Co-angular

Elements of II-A group are called alkaline earth metals due to the reason that

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they occur in earth only

they form divalent cations only

they have ns2 electronic configuration

their oxides and hydroxides are alkaline in nature and metals are present in earth crust

organic synthetic or man made polymers are plastics, rubber and fibre, Which is not a synthetic polymer

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silk

polyester

polyvinyl chloride (PVC)

nylon

Aluminium is in Group lll, its oxide will have the formula.

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AlO

AlO₂

Al₂O₃

Al₃O₂

Diamond, graphite and sand grant molecules are belonged to:

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Inorganic

Organic

biopolymer

synthetic

Intermolecular forces are _________ than binding forces

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stronger

Equal

Weaker

None

Which of the following decides the reactivity of alkyl halides?

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C-C bond strength

C-H bond strength

C-X bond strength

Electronegativity difference

pH value of pepsin is:

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3

2

4

1.4

The crystal of diamond is

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ionic

molecular

covalent

metallic

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N₂O₄is limiting reactant

N₂H₄is the limiting reactant

Reactants are completely converted to the products

Reactions is reversible

The iron obtained from blast furnace is

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Pig iron

Wrought ion

Soft ion

Steel

In a heterollytic bond fission reaction

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A molecule of H₂O is formed

A molecule of H₂O is eliminated

A free radical is formed

A positive and a negative ion is formed

The concentration units independent of temperature would be

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Normality

Mass-volume precent

Molality

Molarity

The open chain compounds are also called

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Aliphatic

Alicylic

Aromatic

Both a and b

Coal is obtained from dead remains of

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Plants

Animals

Both a and b

None

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0 dm³

3 dm³

2 dm³

3 dm³

Similarity in properties of different organic compounds give rise to the under standing of ______

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Polymerization

Non-polar nature

Homologous series

Isomerism

The compounds or species in search of electrons are called

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Elctrophiles

Nucleophile

Nitrities

Bases

Heat absorbed or released during the chemical reaction of physical process at constant pressure is equal to

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The elements of sub-group A are called

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Transition elements

Main elements

Typical elements

Rare earth elements

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