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Q. The melting point of copper is
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Q. The major harmful gas emitted by automobile vehicles which causes air pollution is
Q. Radiocarbon dating technique is used to estimate the age of
Q. Which German mechanical engineer discovered X-rays?
Q. he first 'thermionic value' was invented by
Q. A plant with green leaves placed in red light will appear
Q. Convection occurs out of the followings–
Q. Reading of a barometer going down is an indication of
Q. Which one of the following is the best example of desiccant
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