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Q153) 18 carat gold contains [CPMT 1992]




SOLUTION

24 carat is 10% pure gold , 18 is 75% of 24
Answer: (c)


Q154) Steel differs from pig iron and wrought iron in that it contains [ KCET 1991]




SOLUTION


Answer: (d)


Q155) AgCl precipitate dissolved in NH4OH due to the formation of ... [ AIIMS 1991]



SOLUTION

AgCl + 2NH4OH → H2SO3 + Ag2S(black)
Answer:(d)



Q156) From a solution of CuSO4, the metal used to remove copper is .. [ MP CEE 1992]



SOLUTION


Answer: (d)


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