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Colloids

9 PYQ across 4 exams · 1993–2026 — the complete chronological timeline of how UPSC has tested this idea, oldest to newest.

CSE 1993 → CAPF 2016 → CDS 2017 → NDA 2021
19931 PYQ
CSEQ33
Which one of the following colloidal systems is represented by fog?…
20161 PYQ
CAPFQ25
Which one of the following is not a colloid?…
20171 PYQ
CDSQ54
An emulsion consists of…
20191 PYQ
CDSQ114
Soap solution used for cleaning purpose appears cloudy. This is due to the fact that soap micelles can…
20211 PYQ
NDAQ129
Tyndall effect is a phenomenon of…
20231 PYQ
NDAQ114
Which among the following is NOT true with respect to colloidal solution ?…
20241 PYQ
CDSQ11
In which of the following colloids is the dispersing medium a liquid ?…
20262 PYQs
NDAQ78
Consider the following statements: I. A colloid and a suspension are heterogeneous mixtures. II. Colloids can be separated from the mixture …
NDAQ86
Consider the following statements: I. Pine oil is used as antifoaming agent in the emulsion paints. II. Protective colloids are used in the …
Related concepts — explore their timelines too
Tyndall effectPaint chemistryMixturesScattering of light
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