Question # 1

Which is used in the leather industry

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Borax

Boric acid

Boric oxide

Tetra Boric acid

Which one of the following does not react with dilute sulphuric acid.

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Mg (OH)2

Mg

MgO

Mg(NO3)2

Ozone is mostly produced in

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Tropical region

North polar region

South polar region

Thermosphere zone of atmosphere

Which one is a disaccharide

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Glucose

Sucrose

Fructose

Cellulose

Which are correct oxidation states for lead

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+1, +2

+3 , +5

+2 ,+4

+4 only

On earth polar ice caps and glacier contains H2O

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1%

2%

3%

10%

Acetic acid manufactured by

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Distillation

Fermentation

Ozonolysis

Esterification

Cyanogen chloride reacts with ethyl magnesium bromide to give

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CH₃CH₂Cl

CH₃CH₂Br

C₄H₁₀⁺

CH₃CH₂CN

Which property of triglycerides is used to determine its molecular mass.

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acid number

Saponification number

Iodine number

gold number

Which one is not a meta directing group

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-COOH

-CHO

-COR

-NH₂

Which element burns in nitrogen atmosphere to form nitride.

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Mg

Al

Both a and b

None of these

Which is the least reactive of all the alkali metals

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Li

Na

K

Cs

Setting process of cement is based upon

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Hydrolysis

Hydration

Dehydration

Botha a and b

Vinyl acetylene combines with HCl to form

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Polyacetylene

Benzene

Chloroprene

Divinyl acetylene

The chemist who synthesized urea from ammonium cyanate was

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Berzelius

Kolbe

Wholer

Lavoisier

Which meal is least reactive

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Li

NaOH

K

Pb

The general formula for Alkene having one double bond is

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C_nH_2n+1

C_nH_2n

C_nH_2n-2

C_nH_2n+2

The residence time of NO is

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Few hours

1 day

3 days

4 days

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