1.

Which of the following is not used in making matchsticks these days ? (a) potassium chlorate (b) white phosphorus (c) antimony trisulphide (d) red phosphorus

Answer»

Which of the following is not used in making matchsticks these days ?

(a) potassium chlorate

(b) white phosphorus

(c) antimony trisulphide

(d) red phosphorus



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