The following may cause only surface effects on concrete -
(a) Hydrochloric
(b) Groundnut oil
(c) Milk products
(d) Baking soda.
The correct Answer Is
(b) Groundnut oil
(a) Hydrochloric
(b) Groundnut oil
(c) Milk products
(d) Baking soda.
The correct Answer Is
(b) Groundnut oil