12th Class Fsc Part 2 Short Questions Online Preparation for Chemistry chapter 11(Alcohols Phenols and Ethers)

Online Short Questions For Chapter 11 "12th Class Chemistry Chapter 11 Short Questions Preparation "

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Chemistry - 12th Class Chemistry Chapter 11 Short Questions Preparation

Question # 1

Prepare diethyl ether by Williamson synthesis?

  • Ans 1: Alcohols are reacted with metallic sodium from alkoxides. This alkaloides ion is a strong nucleophile and readily reacts with alkyl halide to produce an ether.
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Prepare Complete Set Wise Questions For Chapter 11 "12th Class Chemistry Chapter 11 Short Questions Preparation "

12th Class Chemistry Chapter 11 Short Questions Preparation - Set 1

Question # 1

Prepare diethyl ether by Williamson synthesis?

  • Ans 1: Alcohols are reacted with metallic sodium from alkoxides. This alkaloides ion is a strong nucleophile and readily reacts with alkyl halide to produce an ether.
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12th Class Chemistry Chapter 11 Short Questions Preparation - Set 2

Question # 1

What happened when hydrogen iodide is added to ethers?

  • Ans 1: With hydrogen iodine ethers gives alcohols which can react further to give alkyl iodides.
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12th Class Chemistry Chapter 11 Short Questions Preparation - Set 3

Question # 1

Ethers belong to an inert class of organics compound.Discuss.

  • Ans 1: Ethers are comparatively inert substance.The reagents like ammonia,alkalies,dilute acids and metallic sodium have no action no ethers on cold state .Moreover they are not oxidized or reduced easily.
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12th Class Chemistry Chapter 11 Short Questions Preparation - Set 4

Question # 1

Only 12-14% ethanol can be prepared by fermentation process .Justify?

  • Ans 1: Alcohol obtained by fermentation is only upto 12% an never exceeds 14% because beyond this limit enzymes become inactive,This alcohol is distilled again an again to obtain 95% alcohol which is called rectified spirit.
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12th Class Chemistry Chapter 11 Preparation

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