CTET Solved Paper - UPTET December 2016 Paper2
118. The catalyst used in Hydrogenation of oil is
- Option : B
- Explanation : (B) Oil contains unsaturated double bounds. When vegetable oils (unsaturated hydrocarbon) is treated with hydrogen in the presence of nickel (Ni) catalyst gives saturated hydrocarbon and the process is called hydrogenation of oil.
Hydrogenated Vegetable oil.
119. Which of the following gives with precipitate, with ammoniacal silver nitrate solution?
- Option : C
- Explanation : (C) When acetylene (C2 H2) react with Tollen's reagent (Ammoniacal AgNO3), a white precipitate, of silver salt is obtained.
H - C ≡ C - H + 2 Ag NO3 + 2 NH4 OH → Ag C ≡ C - Ag (sliver acetylide (white ppt.) + 2NH4NO3 + 2H2O
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