Central Board Of Secondary Education [CBSE] — wrong question [science] 2018 class x

Am student of class 10. There's a mistake in question paper of class 10 cbse board science exam dates on 16 march 2018. The question was that it was asking about the name of the salt which has ph level of 14 which is used to make pakoras. But there is no salt of ph level 14 only naoh is a salt which is a base and not edible. However, baking soda is used but it's ph level is 8.1. Therefore, this question was wrong and they should not suffer because of cbse mistake. So, students should be given grace marks for attempting this question.