List-I | List-II | ||
| (A) | Van Arkel Method | (I) | Copper |
| (B) | Zone Refining | (II) | Titanium |
| (C) | Mond Process | (III) | Germanism |
| (D) | Electrolytic Refining | (IV) | Nickel |
Samples of four metals A, B, C, and D were added one by one to the following solutions. The results obtained were tabulated as follows:
Use the table above to answer the following questions about metals A, B, C, and D:
(i) Which is the least reactive metal?
(ii) What would be observed if C is added to a solution of copper sulphate?
(iii) Arrange the metals A, B, C, and D in the order of their decreasing reactivity.
Rearrange the following parts to form a meaningful and grammatically correct sentence:
P. a healthy diet and regular exercise
Q. are important habits
R. that help maintain good physical and mental health
S. especially in today's busy world