Ethyl alcohol is made unfit for drinking by the addition of the following :
Correct Answer:
(B)
Methanol and Pyridine
Ethyl alcohol becomes poisonous by the addition of methanol and pyridine.
Ques:
2
The off ending substance in the liquor tragedies leading to blindness etc. is –
Correct Answer:
(D)
Methyl alcohol
Methyl alcohol is a colourless liquid. It is soluble in water. Its smell is like a pungent, unpleasant and intensive flavour. In each ratio, it is poisonous while in excess, the intake of methyl alcohol results in madness, blindness and its excess consumption can also cause death.
Ques:
3
Which one of the following is also known as 'wood spirit'?
Correct Answer:
(A)
Methyl alcohol
Methyl alcohol (CH3OH) is also called wood spirit. It is obtained by the destructive distillation of wood.
Ques:
4
Fermentation of sugar leads to –
Correct Answer:
(A)
Ethyl alcohol
Ethyl alcohol is formed by the fermentation of sugar, which is made of glucose and fructose.
Ques:
5
Glucose is converted to ethyl alcohol by the enzyme
Correct Answer:
(C)
zymase
Glucose is converted to ethyl alcohol (ethanol) by the enzyme zymase. Zymase catalyzes the fermentation of sugar (glucose and fructose) into ethanol and carbon dioxide. This enzyme complex naturally occurs in yeast and other anaerobic organisms. This enzyme is used in the preparation of ethanol and alcoholic beverages commercially. Invertase enzyme converts sucrose (cane sugar) into glucose and fructose. Maltase enzyme converts maltose into glucose while diastase enzyme converts starch into maltose.