General Knowledge - General Science
Exercise :: General Science - Elements and Metals
| 36. |
Which of the following was to be discovered first in the chromospheres of the sun? |
Answer: Option D
Explanation:
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| 37. |
Which of the following is in liquid form at room temperature? |
Answer: Option C
Explanation:
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| 38. |
Sodium metal is kept under |
Answer: Option D
Explanation:
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| 39. |
Which of the following are the ingredients of gun metal? |
| A. |
Iron, Zinc, Titanium | | B. |
Iron, tin | | C. |
Iron, Brass, Tin | | D. |
Copper, Tin |
Answer: Option D
Explanation:
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| 40. |
From which mineral is radium obtained? |
| A. |
Rutile | | B. |
Haematite | | C. |
Limestone | | D. |
Pitchblende |
Answer: Option D
Explanation:
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