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

How will you distinguish between methanol and ethanol?

  • Ans 1: Ethanol gives iodoform with iodine in the presence of Na-OH,Formation of yellow crystals indicate that the alchohol is ethanol. Methanol does not give idodrom test.
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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

How will you distinguish between methanol and ethanol?

  • Ans 1: Ethanol gives iodoform with iodine in the presence of Na-OH,Formation of yellow crystals indicate that the alchohol is ethanol. Methanol does not give idodrom test.
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12th Class Chemistry Chapter 11 Short Questions Preparation - Set 2

Question # 1

Why ethyl alcohol is liquid while Ethyl chloride is gas at room temperature?

  • Ans 1: Ethyl alcohol is liquid while ethyl chloride is gas because ethyl alcohol has hydrogen bonding which is present in it but absent in ethyl chloride.
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12th Class Chemistry Chapter 11 Short Questions Preparation - Set 3

Question # 1

Define the preparation of methanol by reaction of Co and H2?

  • Ans 1: First of all mixture of carbon monoxide and hydrogen is purified,It is compressed under a pressure of 200 atmospheres and taken into a reaction chamber by means of coiled pipers. These vapors are passed through a condenser to get methanol Unreacted gasses are recycled though compressor to reaction chamber.
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12th Class Chemistry Chapter 11 Short Questions Preparation - Set 4

Question # 1

Ethanol has higher boiling point than diethyl ether.

  • Ans 1: Ethanol has higher boiling point than diethyl ether because ethanol has strong hydrogen bonding in molecule while ether don't show hydrogen bonding with its molecule.
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12th Class Chemistry Chapter 11 Preparation

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