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Q. The three elements most needed in common fertilisers are:
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Q. In order to lower the temperature below 0°C, the substance mixed with ice is
Q. "Every matter in the universe is made up of very fine particles", who said this for the fi...
Q. An example of a 'cross-linked polymer' is
Q. Which among the given is usually not an air-pollutant
Q. Which of the following metals is not a pollutant ?
Q. Which one of the following statements is not right?
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