Central Board Of Secondary Education [CBSE] — science class 10 board

Please refer to the question number 14 of today's science paper of class 10 set 3 dated 16.03.2018. The question states that the ph of the salt used to make tasty and crispy pakoras is 14. Any salt with a ph of 14 is highly alkaline, the commonly used edible salt to make pakoras is baking soda which has a ph of 8.2. Only caustic soda has a ph of 14, but it's not edible and mainly used in manufacture of soaps. Due to the confusion with ph many people have written about caustic soda. Please pursue my complaint and do the needful.