Question # 1

Alcohol obtained by fermentation is only upto

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10%

12%

20%

95%

Ca Mg3 (SiO3)2 is the composition of.

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Dolomite

Gypsum

Calcite

Asbestos

Hydrogen bond is the strongest between the molecules of.

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HF

HCl

HBr

HI

When CO₂is made to react with ethyl magnesium iodide, followed by acid hydrolysis, the product formed is

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propane

propanoic acid

propanal

propanol

The presence of a double bond in a compound is the sign of.

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Saturation

Unsaturation

Substitution

None of these

Peroxyacetyl nitrate (PAN) is a irritant to human beings and it affects

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Eyes

Ears

Stomach

Nose

Sodalime is

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NaOH

Mixture of Na and Ca(OH)2

KOH

Mixture of CaO and NaOH

Aldehydes and ketones can be defected by

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2, 4 DNPH test

Tollen's test

Sodium Nitro prusside test

Benedicts solution test

Which one of the following molecules does not form alcohol when reacts with a Grignard reagent.

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Formaldehyde

Acetaldehyde

Propanone

CO2

Which one of the following noble gases is least polarizable

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He

Ne

Ar

Kr

Which compound form benzoic acid on oxidation with strong oxidizing agent.

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Toluene

Ethyl benzene

n propyl benzene

All

P2O5 is usually used as

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Drying agent only

Reducing agent

Both drying and reducing agent

Both drying agent and oxidizing agent.

A carbohydrate that cannot be acid hydrolysed is called.

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Monosaccharides

Di saccharides

Poly saccharides

Starch

Correct order according to atomic size in the following is

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Na > K

Be > Mg

O > N

Cl > F

An aldehyde is reduced to alkane with hydrazine is the presence of

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KOH

NaOH

CaO and NaOH

Ca(OH)2

The reaction of alkyl halides with sodium metal in the presence of ether to from alkane is known as.

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Wortz reaction

Frankland reaction

Sabatier sendron

Kolbe's synthesis

Transition elements are those

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Which becomes before uranium

Which becomes after uranium

Which are prepared artificially

Which are in between s-block and p - block elements

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