Question

71. Aqueous solution of which of the following oxides
turns blue litmus red ?
(A) Sulphur dioxide (B) Magnesium oxide
(C) Iron oxide (D) Copper oxide.


72. Which one of the following is used for making
crackers ?
(A) Copper
(B) Sulphur
(C) Iron
(D) Chlorine​

Answer 1

Answer:

71.option c

72.option b

Explanation:

71.it consist only ionic