Question

47 यदि 4-1 का 90% , (a + b) के 60%
प्रतिशत के बराबर है, तो का कितना प्रतिशत​

Answer 1

Answer:

31. a) state the chemical properties on which the following uses of baking soda are based:

(i) as an antacid

(ii) as a soda acid fire extinguisher

(iii) to make bread and cake soft and spongy

b) How is washing soda is obtained from baking soda? Write balanced chemical equation.