What change will you observe if you test soap with litmus paper (red and blue)?

Solution: For an m×n chessboard there are 2m+2n−2 ways. Case I. There are two horizontally adjacent squares of the same color: 2m−2 ways. Case II. There are two vertically adjacent squares of the same color: 2n−2 ways. Case III. None of the...

The oxide of the element is basic as it turns red litmus blue .This means that the element is a metal (M).

The solution which turns red litmus blue is basic. Its pH should be greater than 7. Therefore, the correct answer is (d).

Hyclrochloric acid because adding excess acid to the base would turn blue litmus solution  red.

(A) Red litmus remains red and blue litmus turns red.

(D) It smells like vinegar and turns blue litmus red.

(A) I and II

(D) soap micelles scatter light

Soap is a salt of a strong base (NaOH or KOH) and a weak acid (carboxylic acid). So, its aqueous solution is basic in nature. Hence, an aqueous solution of...

(d) It smells like vinegar and turns blue litmus to red.