Electrolysis is applied in the following processes except?
A. electroplating B. extraction of aluminium C. extraction of iron D. purification of copper Correct Answer: Option C C. extraction of ironWhich of the following compounds absorbs moisture from the atmosphere and dissolves in it?
A. FeCI3 B. MgSO4.7H2O C. Na2SO4 D. KCI Correct Answer: Option A B. MgSO4.7H2OWhen aqueous ammonia is added to one of the following solutions, a white precipitate which dissolved in excess ammonia is formed Identify the solution?
A. ZnCl2(aq) B. Pb(NO3)2(aq) C. CuSO4(aq) D. FeSO4(aq) Correct Answer: Option A A. ZnCl2(aq)The indicator used in neutralizing CH3COOH and NaOH solution has pH range of?
A. 3-5 B. 7-8 C. 8-10³ D. 10-12 Correct Answer: Option C C. 8-10³Products
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