JEE Advanced 2021 Full Test 1 Paper 2

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SECTION – C (Numerical Answer Type)
This section contains 06 questions. The answer to each question is a NUMERICAL VALUE. For each question, enter the correct numerical value (in decimal notation, truncated/rounded-off to the SECOND DECIMAL PLACE; e.g. XXXXX. XX).
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Question : 35 of 54
 
Marks: +1, -0
Which of the following statements is/are correct?
(i) Sulphur solution is an example of macro molecular colloid.
(ii) Adsorbent used in gas masks is activated charcoal
(iii) AgI is used for producing artificial rain by seeding.
(iv) Alums purify muddy water by coagulation of colloidal sized clay & sand.
(v) It occurs because of van der Waals forces. (for physisorption)
(vi) More easily liquefiable gases are adsorbed readily. (for physisorption)
(vii) Under high pressure it results into multimolecular layer on adsorbent surface. (for physisorption)
(viii) Enthalpy of adsorption ( ΔHadsorption ) is low and positive. (for physisorption)
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