Q. 245.0( 2 Votes )
Fill in the following blanks with suitable words:
(a) The addition of oxygen to a substance is called ......... whereas removal of oxygen is called.........
(b) The addition of hydrogen to a substance is called ......... whereas removal of hydrogen is called.........
(c) Anti-oxidants are often added to fat containing foods to prevent ..........due to oxidation.
(b) The addition of hydrogen to a substance is called “reduction” whereas removal of hydrogen is called “oxidation”.
(c)Anti-oxidants are often added to fat containing foods to prevent “rancidity” due to oxidation.
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Which among the following statement(s) is(are) true? Exposure of silver chloride to sunlight for a long duration turns grey due to:
(i) The formation of silver by decomposition of silver chloride
(ii) Sublimation of silver chloride
(iii) Decomposition of chlorine gas from silver chloride
(iv) Oxidation of silver chlorideEvergreen Science
Which of the following are exothermic processes?
(i) Reaction of water with quicklime
(ii) Dilution of an acid
(iii) Evaporation of water
(iv) Sublimation of camphor (crystals)Evergreen Science
(b)Lakhmir Singh & Manjit Kaur - Chemistry