Which of the following is an example of thermosetting plastic?
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Which of the following is applied on the top of the matchsticks?
Chemical formula for sulphurous acid is:
What is the relative molecular mass of water?
............. elements have the largest atoms
Which one of the following forms of phosphorus is most reactive?
Which of the following is one of the commercial products obtained from Gelidium and Gracilaria and are used to grow microbes and in preparations of ice- creams and jellies?
What is the process of rust forming on iron called?