Question

please tell me only Q3 ans​ of science

Answer 1

Answer:

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Explanation:

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Answer 2

Answer 1 :

MAGNESIUM OXIDE IS BASIC IN NATURE.WE CAN TEST BY USING LITMUS PAPER , PUT SOME DROPS OF MAGNESIUM OXIDE ON RED LITMUS PAPER IF IF THE COLOUR OF RED LITMUS PAPER CHANGES TO BLUE IT MEANS IT IS BASIC IN NATURE.

ANSWER 2 : 3 WAYS TO PREVENT RUSTING ARE:

                   1- BY PAINTING IT.

                   2- AVOID CONTACT WITH MOISTURE(WATER).

                   3-COATING WITH OIL.