Question # 1

Sodalime is

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NaOH

Mixture of Na and Ca(OH)2

KOH

Mixture of CaO and NaOH

Which one of the following polymers is called a polyamide

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Nylon

Rayon

Terylene

Orlon

Which of the following elements is not present abundantly in earth's crust.

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Silicon

Aluminium

Sodium

Oxygen

Phosphorous helps the growth of

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root

leave

stem

seed

Bone ash contain calcium phosphate

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40%

50%

70%

80%

Acetic acid can be obtained from CH3MgI by treatment with.

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H2O

CINH2

CO2

HCHO

Formation of cyanohydrin from an aldehyde in an example of.

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Nucleophilic substitution

Nucleophilic addition

Electrophilic addition

Electrophilic substitution

Which one of the following gases is prepared by heating a mixture of sodium acetate and sodium hydrozide.

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CH4

CH2-CH3

CO2

CO

Which one of the following gases is used for artificial ripening of fruits

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Ethene

Ethyne

Methane

Propane

The most electronegative element of group V-A is

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N

P

Sb

Bi

Ester are formed the reaction of carboxylic acid with.

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Alcohol

Ethers

Aldehydes

Alkyl halides

The element of 2nd period, which has highest ionization energy from the following is

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Be

C

N

O

A solution of borax in water is.

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Acidic

Alkaline

Neutral

None of these

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

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O2

O2+

O2-

O2^-2

Vegetable oils are

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Polyesters

Glycerides of unsaturated fatty acids

Essential oils

Fatty acids

Glycoside linkage is present in

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Proteins

Nylon -6,6

Starch

DNA

Which reaction is disproportionate reaction

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Aldol Condensation

Cannizzaros's reaction

Haloform reactions

Acid-catalyzed reactions

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

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Carbon

Magnesium

sulphur

Hydrogen

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