NCERT VI Social Sciences

Fill in the blanks.

(a) Oxygen ………… burn, but ………… burning.
(b) Some ………… substances absorb ………… from the air.
(c) It is mandatory to treat ………… before letting them out.
(d) Solid carbon dioxide is also called ………… .

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Answers

2015-04-02T19:58:43+05:30