In the reaction,

CH₃CH₂C ≡ CH $\underset{\left(\mathrm{ii}\right) {\mathrm{H}}_2\mathrm{O}}{\overset{\left(\mathrm{i}\right) {\mathrm{O}}_3}{\to }}$ Products

Products will be:

• CH₃COCH₃

• CH₃COCH₂OH

• CH₃COOH + HCOOH

• CH₃CHO + HCHO

Ethyl alcohol can be prepared from Grignard reagent by the reaction of :

• HCHO

• R₂CO

• RCN

• RCOCl

The compound formed on heating chlorobenzene with chloral in the presence of concentrated sulphuric acid is

• gammexane

• DDT

• freon

• hexachloroethane

Ethyl alcohol is used as a preservative for chloroform because it :

• prevent aerial oxidation of chloroform

• prevents decomposition of chloroform

• decomposes phosgene to CO and Cl₂

• removes phosgene by converting it to ethyl carbonate

Protic solvent is

• diethyl ether

• n-hexane

• acetone

• ethanol

Mustrad gas is

• oil gas

• poisonous gas

• fuel gas

• life gas

157.

Which among the following is a catalyst for the preparation of Grignard reagent ?

• Iron powder

• Iodine powder

• Activated charcoal

• Manganese dioxide

The chirality of the compound

• R

• S

• Z

• E

Which is not present in Grignard reagent ?

• Methyl group

• Magnesium ion

• Halogen atom

• Carboxylic group

Which ligand is useful for removal of the toxic effect of lead metal in body in chelate therapy treatment?

• AsO${}_4^{3-}$

• CH₃COO^-

• (COO^-)₂

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