Question

$15 \times ( - 12)$
​

Answer 1

Answer:

(B) The nail in the test tube 1 is rusted highly because in the test tube 1, iron nail meets with all the requirements which are essential for the process of corrosion. That's Supply of oxygen is dissolved form, presence of water and material itself. ... Hence corrosion process does not take place.

Answer 2

Answer:

15×(-12)

=-180

.......