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Introduction to Alcohols

Question 37In...

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Question 37
Intake of a small quantity of methanol can be lethal. Comment.

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Solution

Methanol is oxidised to methanal in the liver. Methanal reacts rapidly with the components of cells. It causes the protoplasm to coagulate. It also affects the optic nerve, causing blindness.

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Q. Question 37
Intake of a small quantity of methanol can be lethal. Comment.

Q. Assertion :Intake of small quantity of methanol can be lethal. Reason: Methanol(

C H_{3} O H

) is highly toxic and unfit for consumption. Methanol ingested in large quantities is metabolized to formic acid or formate salts, which is poisonous to the central nervous system and may cause blindness, coma and death.

Q. An organic liquid

^{'} A^{'}

with acidified potassium dichromate gave product

^{'} B^{'}

^{'} B^{'}

on heating with methanol in presence of concentrated sulphuric acid formed compound

^{'} C^{'}

which on subsequent treatment with sodium hydroxide formed two products

^{'} D^{'}

^{'} E^{'}

^{'} D^{'}

is known to affect the optic nerve causing blindness. Intake of

^{'} D^{'}

in very small quantities can cause death. What are compounds

^{'} A^{'},^{'} B^{'},^{'} C^{'},^{'} D^{'}

^{'} E^{'}

?

Q. Match these words /sentences with appropriate statements given below:
(methanol, fermentation, catenation, homologous series, hydrogen gas)
i) The ability of carbon to form a large number of compounds through self-linking property.
ii) Alcohols react with sodium to give this element.
iii) This series helps in giving knowledge and enables a systematic study of members.
iv) Formation of simple molecules from complex organic compounds using enzymes.
v) Unlike ethanol, the intake of this compound in very small quantities can cause death.

Q. What is the quantity of water that should be added to

16

g methanol to make the mole fraction of methanol as

0.25

?

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Introduction to Alcohols

Standard XII Chemistry

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