Which of the following gases is lighter than air ?
Answer: D
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The use of which of the following devices has given the modern biologist a better insight into the internal structure of cells
Answer: B
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The dark lines in the solar spectrum are due to
Answer: A
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Which prefix is often used with scientific terms to indicate that something is the same, equal or constant?
Answer: A
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The element required for Solar energy conversion?
Answer: A
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Which of the following elements is a metal
Answer: A
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Who had performed the world?s first heart transplant?
Answer: B
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The Ozone Layer restricts from
Answer: C
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Bacteria which are round in shape are called-
Answer: C
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Which of the following is not an isotope of hydrogen?
Answer: D
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