Question # 1

Common names of aldehydes are derived from the common names of.

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Alcohol

Ketones

Carboxylic acids

Alkenes

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

Which one of the following is co polymer

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PVC

Polyvinyl acetate

Nylon -6,6

Polyethene

Which one of the following reactants will be required to form ethyl alcohol form ethyl bromide.

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Alcoholic KOH

Aqueous KOH

Alkaline KMnO4

Sodium metal in ether

Which compound shows maximum hydrogen bonding with water

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CH₃OH

C₂H₅OH

CH₃- O - CH₃

C₆H₅OH

Which enzyme is not involved in fermentation of starch.

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Diastase

Zymase

Urease

Invertase

Who gave the law of Triads in 1829?

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Dobereiner

Mosely

Newland

Mendeleev

Which reagent will react with both aldehyde and ketones

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Grignard reagent

Tollen's reagent

Fehling's reagent

Benedict's reagent

The state of hybridization of "C" in ethane is

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SP

sp²

dsp²

sp³

The compound which can not be nitrated easily.

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Benzene

Nitrobenzene

Phenol

Toluene

Which one of the following elements exhibits s-inert pair effect.

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B

Al

Pb

Sc

An sp3- hybrid orbital contains.

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25% s- characters

50% s- characters

75% s- characters

100% s - characters

The colour of transition metal complexes

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d-d transitions of electrons

paramagnetic nature of transition elements

ionization

loss of s-electron

What type of reaction occurs between ethene and hydrogen.

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Addition

Substitution

Oxidation

Dehydration

A cyanohydrin is formed by the reaction of

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Alcohol and HCN

Ketone and NH3

Aldehyde and NH2OH

Aldehyde and HCN

Which alkyl halide does not form Grignard's reagent.

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CH3-Br

CH3-Cl

CH3- F

CH3-I

Alcohol obtained by fermentation is only upto

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10%

12%

20%

95%

The general formula for Alkanes is

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C_nH_2n+1

C_nH_2n

C_nH_2n-2

C_nH_2n+2

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