2nd Year Chemistry MCQs F.Sc. Part 2
Chapter No.2
Block Elements
Total MCQs = 31
26. Which of the following sulphate is not soluble in water? (AJK 2016) (SGD 2015, 2017)
A. Sodium sulphate
B. Potassium sulphate
C. Zinc sulphate
D. Barium sulphate
Answer:
D. Barium sulphate
27. The element caseium beats resemblance with (SGD 2015)
A. Ca
B. Cr
C. Ca and Cr
D. None of these metals
Answer:
D. None of these metals
28. Chile saltpetre has the chemical formula? (GRW 2015, 2016) (DGK 2015, 2016, 2017) (LHR 2015, 2019) (AJK 2019)
A. NaNO3
B. KNO3
C. Na2B4O7
D. Na2CO3. H2O
Answer:
A. NaNO3
29. The mineral CaSo4.2H2O has the general name: (LHR, SGD 2016, 2017) (MTN 2018)
A. Gypsum
B. Dolomite
C. Calcite
D. Epsom salt
Answer:
A. Gypsum
30. Down’s cell is used to prepare? (GRW 2018)
A. Sodium Carbonate
B. Sodium Bicabonate
C. Sodium Metal
D. Sodium Hydroxide
Answer:
C. Sodium metal
31. Which element is deposited at the cathode during the electrolysis of brine in diaphragm cell? (MTN, BWP 2017) (SGD, SWL 2018)
A. H2
B. Na
C. Cl2
D. O2
Answer:
A. H2
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