Question # 1

Which of these polymers is a synthetic polymer

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Animal fat

Starch

Cellulose

Polyester

Which element forms on ion wiht charge 3+

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Beryllium

Aluminium

Carbon

silicon

For which mechanisms, the first step involved is the same

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E₁and E₂

E₂and SN₂

E₁and E₂

E₁and SN₁

Alcohol obtained by fermentation is only upto

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10%

12%

20%

95%

Which gas is evolved when CO2 is passed through KO2.

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O2

CO

O3

None of these

The IUPAC name of C(CH3)4 is

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Iso Propyl methane

2-Methylbutane

Iso bytylmethane

2,2 dimethylpropane

Which makes a molecule more stable.

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Greater localization of pi electrons

Less delocalization of pi electrons

Greeter delocalization of pi electrons

Less delocalization for pi electrons

Which one of the following methods is used for the preparation of ether.

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Kolbe's reaction

Frankland reaction

Williamson synthesis

Down's process

Which one of the following elements burns in air to form an oxide which, when shaken with water, give sa solution with a pH greater than 7.

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Carbon

Magnesium

sulphur

Hydrogen

Which compound is alicyclic in nature.

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Cyclobatane

Iso batane

n butane

Toluene

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 of the following acid can be used as a catalyst in Friedel Craft's reactions

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AlCl₃

HNO₃

BeCl₂

NaCl

Which one of the following group of Periodic table called chalcogen family.

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Group III A

Group VA

Group VI A

Group VII A

Which has greater hydration energy.

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Li+

Na+

K+

Mg+2

Boiling point range of petroleum ether.

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5- 20 ^oC

10- 30^oC

20- 60^oC

30- 90^oC

The conversion of benzene to chlorobenzene is a

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Addition reaction

Elimination reaction

Substitution reaction

Dehydration process

Which chemical reduces the acidity of soil.

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Lime

Urea

Ammonium nitrate

Ammonium sulphate

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

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