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How Do Alcohols Affect Human Beings?

Which of the ...

Question

Which of the following can damage optic nerve leading to blindness, if taken internally ?

(a) $C H_{3} C O O H$ (b) $C_{2} H_{5} O H$ (c) $N a H C O_{3}$ (d) $C H_{3} O H$

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Solution

(d) $C H_{3} O H$

$C H_{3} O H$ (methanol), when consumed, oxidises into methanal into the liver. This causes coagulation of protoplasm in the cells, as methanal reacts rapidly with the components of the cells. Due to this, the cells stop functioning and damage the optic nerve leading to blindness.

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Similar questions

\begin{matrix} Eye diseases & Defect (1) Glaucoma & (A) an infection in the layer of the eye which causes inflammation (2) Colour blindness & (B) increased pressure in the eye which causes damage to the optic nerve (3) Conjunctivitis & (C) lens of the eye becomes opaque resulting in blindness (4) Cataract & (D) inability to distinguish between colours due to defect in photoreceptors \end{matrix}

C_{2} H_{5} O H

C H_{3} C H O

C H_{3} O H

H C H O

^{'} A^{'}

^{'} B^{'}

^{'} B^{'}

^{'} C^{'}

^{'} D^{'}

^{'} E^{'}

^{'} D^{'}

^{'} D^{'}

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

^{'} E^{'}

The deficiency of one of the following in the diet of a person for a considerable time can lead to a disease called night blindness. This one is:

(a) vitamin B

(b) vitamin D

(d) vitamin C

What is the function of the following -

a - pupil

b- cornea

c- retina

d- iris

e - eye lids

d- optic nerve

d- siliary muscles

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