General Knowledge : General Science QUESTIONS AND ANSWERS :: part1 : 51 to 55
Following General Knowledge Multiple choice objective type questions and answers will help you in TRB, SSC and UPSC 2024 examinations :
51.Titanium is purified by |
| Zone refining |
| Electrolysis |
| Van Arkel method |
| Hydraulic washing |
52.Which of the following is called a strategic metal ? |
| Silicon |
| Germanium |
| Titanium |
| Uranium |
53.The main constituents of pearls are |
| calcium carbonate and magnesium carbonate |
| calcium oxide and ammonium chloride |
| aragonite and conchiolin |
| ammonium sulphate and sodium carbonate |
54.The gas usually filled in the electric bulb is |
| hydrogen |
| oxygen |
| nitrogen |
| carbon dioxide |
55.Which of the following is the best conductor of electricity ? |
| Oridinary water |
| Sea water |
| Boiled water |
| Distilled water |
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