Question # 1

S_N2 reactions can be carried out with

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Primary alkylhalide

Secondary alkyhalide

Tertiary alkylhalide

All of these

Out of all the elements of Group V-A the highest ionization energy is possessed by

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N

P

Sb

Bi

The percentage of carbon is different types of iron products is in the order of.

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Cast iron > wrought iron > Steel

Wrought iron >Steel >Cast iron

Cast iron > Steel > Wrought iron

Which one is used for manufacture of fertilizers

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Methane

Ethane

Ethene

Ethyne

The carbon atom of a carbonyl group is

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sp hybridized

sp²hybridized

sp³hybridized

none of these

Glycoside linkage is present in

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Proteins

Nylon -6,6

Starch

DNA

Which has greater hydration energy.

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Li+

Na+

K+

Mg+2

Lowest oxidation state of nitrogen is present in.

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NH3

NO2

NO

HNO3

For which mechanisms, the first step involved is the same

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E₁and E₂

E₂and SN₂

E₁and E₂

E₁and SN₁

Which element reacts with carbon to form metal carbide.

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Li

Na

K

All of these

Which one of the following elements commonly exhibits oxidation states of +6 and +3 in aqueous solution.

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Na

Cr

Mg

C

Ortho boric acid on strong beating gives.

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Borax

Boron oxide

Metaboric acid

Tetraboric acid

Acetaldehyde can be prepared by the oxidation of.

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Acetic acid

Ethanol

1- Proponal

Ethanonic acid

Which of the following derivative cannot be prepared directly from acetic acid

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Acetamide

Acetyl choride

Acetic anhydride

Ethyl acetate

Which one of the following polymers has no peptide linkage in it.

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Terlene

Nylon -6,6

Protein

None of these

Which is not a calcarious material.

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Lime

Clay

Marble

Marine shell

Which of the following specie has the maximum number of unpaired electrons.

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O2

O2+

O2-

O2^-2

In which compound, oxidation state of sulphur is +6

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H2S

H2SO4

H2SO3

SO3

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