69) How many electrons are present in 0.1 moles of ${\left[PO\right]}_4^{-3}$ ions.
(A) $50 \times 6.023 {10}^{23}$
(B) $5\times 6.023 {10}^{23}$
(C) $1\times 6.023 {10}^{23}$
(D) $3\times 6.023 {10}^{23}$

70) Esters are sweet smelling substances. These when treated with NaOH the
(i) Formation of alcohol and sodium salt
(ii) Formation of carboxylic and water
(iii) This reaction is known as sponification

(A) (i) and (ii) are wrong
(B) (ii)and (iii) are wrong
(C) Only (ii) is wrong
(D) Only (iii) is wrong