General Knowledge : General Science QUESTIONS AND ANSWERS :: part1 : 41 to 45
Following General Knowledge Multiple choice objective type questions and answers will help you in TRB, SSC and UPSC 2024 examinations :
41.Which of the following metals forms an amalgam with other metals ? |
| Lead |
| Tin |
| Zinc |
| Mercury |
42.Diamond is an allotropic form of |
| silicon |
| caebon |
| sulphur |
| germanium |
43.The presence of which of the following salts in water causes corrosion in steam boilers ? |
| Sodium chloride |
| Magnesium chloride |
| Calcium bicarbonate |
| Potassium bicarbonate |
44.Which of the following is not a neutral oxide ? |
| Carbon monoxide |
| Sulphur dioxide |
| Nitric oxide |
| Water |
45.The ratio of pure gold in 18 carat gold is |
| 60% |
| 75% |
| 80% |
| 100% |
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