Everyday Science
Copper can be converted into gold by ?
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The gas, commonly known as
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The gas used in a refrigerator to cool water is___________?
Options:
- A. Nitrogen
- B. Carbon dioxide
- C. Methane
- D. Tetrafluoroethane
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D. Tetrafluoroethane
A camera uses a __________ to form an image.
Options:
- A. convex lens
- B. concave lens
- C. condenser lens
- D. none of these
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A. convex lens
Deficiency of Vitamin-A results in __________?
Options:
- A. Night blindness
- B. rickets
- C. scurvy
- D. hair fall
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A. Night blindness
Acid rain is mainly caused by emissions of __________ in the atmosphere?
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The three elements needed for healthy growth of plants are __________?
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The source of oxygen in photosynthesis is
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The average adult has a blood volume of about __________ liters.
Options:
- A. 4
- B. 5
- C. 6
- D. 7
View Answer
B. 5