101 Q) In terms of magnetic properties oxygen belongs to
(a) magnetic material
(b) ferromagnetic materials
(c) paramagnetic materials
(d) diamagnetic materials
102 Q) "Consider the following statements
I.Alums are the double salts of sulphates of monovalent and divalent cations.
II.Alum is used in the purification of drinking water.
Which of the statements given above is/are correct?"
(a) Only I
(b)Only II
(c) Both I and II
(d) Neither I nor II
103 Q) The pure form of carbon is
(a) diamond
(b) graphite
(c) charcoal
(d) fullerene
104 Q) Which one of the following reducing agents can also act as an oxidising agent?
(a)Hydrogen chloricd
(b)Hydrogen iodide
(c)Hydrogen sulphide
(d)Sulphur dioxide
105 Q) The polymeric fibre used as a substitute for wool in making synthetic blankets, sweater, etc., is
(a) nylon
(b) teflon
(c) orlon
(d) bakelite
106 Q) "A body is charged negatively. It implies that
"
(a) it has lost some of its protons
(b) it has lost some of its electrons
(c) it has gained some electrons from outside
(d) None of the above
107 Q) Which one among the following polymers is used for making bullet-proof material?
(a) Polyvinyl chloride
(b) Polystyrene
(c) Polyethylene
(d) Polyamide
108 Q) Which one of the following is not responsible for the global warming?
(a) Carbon dioxide
(b) Methane
(c) CFCs
(d)Slacked lime
109 Q) The Fehlling's solution is used for the detection of
(a) glucose
(b) starch
(c) lipids
(d) proteins
110 Q) Shallow lake with rich organic products are called
(a) heterotrophic
(b) eutrophic
(c) mesotrophic
(d) oligotrophic
108 ans is slakelime and cfc
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