Question # 1

The macro nutrients are required in ranging from

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5 kg to 200 kg

5 kg to 200 g

6g to 200 g

1 kg to 100 kg

In a period, from left to right in the periodic table, the size of atom generally.

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Increases

decreases

Remains constant

First increase upto the middle of period and then decreases

Phenol after reduction with hydrogen changes to

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Picric acid

Benzene

Cyclohexane

Cyclohexanol

When methane reacts with Cl₂in the presence of diffused light the products obtained are

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Chloroform only

Carbon tetrachloride only

Chloromethane and dichloromethane

Mixture of a, b, c

Which one is not electrophile

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BF3

SO3

AlCl3

NH3

Alcohol obtained by fermentation is only upto

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10%

12%

20%

95%

Which one of the following can best be used to distinguish between samples of ethane and ethene

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Aqueous BaCl2

Aqueous bromine

Lime water

Litmus solution

The colloidal particles in raw water can be removed by

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Coagulation

Aeration

Chlorination

Hydration

In primary alkyl halides, the halogen atom is attached to a carbon which is further attached to how many carbon atoms.

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One

Two

Three

Four

When ethyl alcohol is heated, with NH3 in presence of ThO2 then

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O-H bond is broken

C-O bond is broken

Ethene is formed

Ethane is formed

The enzyme which bring about exchange of functional group between two compounds is called.

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Hydrolases

Transferase

Lyases

Ligases

Which one of the following products is not formed when acetic acid reacts with PCl5

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C2H5Cl

HCl

POCl3

CH3COCl

In IUPAC system, the name of K4[Fe(CN)6] is

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Potassium ferricynaide

Potassium ferrocynide

Potassium Hexacyanoferrate (II)

Poatssium hexacaynoferrate (III)

The most reactive Alkyl halide is

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Alkyl Iodide

Alkyl Bromide

Alkyl fluoride

Alkyl Chloride

Which one of the following species is meta director if present at benzene ring.

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-NO2

-Cl

-CH3

-OH

Which woody raw material is used for the manufacture of paper pulp.

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Cotton

Bagasse

Poplar

Rice straw

The solution of which acid is used for seasoning of food

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Benzoic acid

Butanoic acid

Formic acid

Acetic acid

Which isomerism is not found in alkenes.

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Chain isomerism

Positional isomerism

Geometrical isomerism

Metamerism

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