UPSC Combined Geo-Scientist

Chemist

2 objective papers
120 questions each
2 h per paper
100 + 300 marks

Prelims Paper I covers general studies.

UPSC Combined Geo-Scientist, Prelims · 2020 · Paper I, General Studies · Q87 of 120

Geo-Scientist Prelims 2020 General Studies Q87: Which one of the following is NOT an example of colloids?

QuestionChemistry / colloids

Which one of the following is NOT an example of colloids?

(a) Milk
(b) Jelly
(c) Tincture of iodine
(d) Fog

Answer: (c) Tincture of iodine

Tincture of iodine (I₂ in alcohol) is a true solution. Milk = emulsion (liquid in liquid), jelly = gel, fog = aerosol (liquid in gas) — all colloids.

Take this paper offlineAll 120 questions with answers and explanations in one PDF.

Download PDF Join Telegram