The colours are added to the alcohol to make it blue, so that it can be easily identified. This alcohol is called . . . . . . . . alcohol.
A. mature
B. non-poisonous
C. poisonous (deformed)
D. natural
Answer: Option C
A. mature
B. non-poisonous
C. poisonous (deformed)
D. natural
Answer: Option C
Traditional 'battery' contains which of the following chemicals?
A. Ethylene glycol
B. Sulphuric acid
C. Sodium bicarbonate
D. Ethanol
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