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Q. The age of most ancient geological formations is estimated by
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Q. Paleontology is a branch of science that deals with the
Q. When an iron nail gets rusted, iron oxide is formed
Q. Refrigeration is a process which
Q. In which of the following activities silicon carbide is used?
Q. Soldering of two metals is possible due to the property–
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Q. The spermatozoa contain an acrosome anteriorly, the function of which is
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