Question # 1

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

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Ethene

Ethyne

Methane

Propane

Reverse of esterification is known as

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Trans esterification

Saponification

Hydrolysis

Neutralization

Alkali metal whose carbonate is is relatively less stable and decomposes giving its oxides is.

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Li

Ba

K

Rb

Which of the following is non-typical transition element

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Cr

Mn

Zn

Fel

----------- compound shows extensive hydrogen bonding with water

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C₂H₆

H₂S

C₂H₅OH

CH₃Cl

In which process, an amino acid is produced

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Wurtz synthesis

Strecker synthesis

Kolbe synthesis

Cannizzaro reaction

The temperature of digester is main tained at

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100^oC

160-180^oC

200^oC

200-240^oC

Which of the following is not directly prepared from CH₃COOH

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Ethyl acetate

Acetyl chloride

Acetic anhydride

Acetamide

XeF6 n hydrolysis produces.

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XeOF2

XeOF3

XeOF4

XeF2

The strength of binding energy of transition elements depend upon

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number of electron pairs

number of unpaired electron pairs

number of neutrons

number of protons

Which element shows highest oxidation state among these

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Zn

Fe

Mn

Sc

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 substances have garlic odour and a colourless gas.

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CH3OH

HCOOH

CH2=CH2

HC= CH

Which one is symmetrical ketone

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Acetone

Methyl ethyl ketone

Methyl n propyl ketone

2- pentonone

Which of the following is not a fatty acid

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Propanoic acid

Acetic acid

Phthalic acid

Butanoic acid

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

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Ethene

Ethyne

Methane

Propane

Which is called marsh gas

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S2Cl2

SOCl2

CH4

CHBr3

The conversion of benzene to chlorobenzene is a

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Addition reaction

Elimination reaction

Substitution reaction

Dehydration process

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