Sodium chloride will turn

(a) blue litmus red
(b) methyl orange yellow
(c) red litmus blue
(d) none of the above

Q. P and Q are aqueous solutions of sodium chloride and sodium hydroxide, respectively. Which of these will turn:
(a) blue litmus red?
(b) red litmus blue?

Q. Choose the correct statement from the following options.
(a) Citric acid will turn red litmus to blue.
(b) Acetic acid will turn red litmus to blue.
(c) Sodium hydroxide will turn red litmus to blue.
(d) Potassium hydroxide will turn blue litmus to red.

Q. What do we observe on pouring acetic acid on red blue litmus papers ?
(a) Red litmus remains red and blue litmus turns red.
(b) Red litmus turns blue and blue litmus remains blue.
(c) Red litmus turns blue and blue litmus turns red.
(d) Red litmus becomes colourless and blue litmus remains blue.

Q.

The salt whose aqueous solution will turn blue litmus to red is :

(a) ammonium sulphate

(b) sodium acetate

(c) sodium chloride

(d) potassium carbonate

Q. Acids, acidic oxide and acidic salts :
(a) will turn red litmus blue
(b) will turn blue litmus red
(c) will turn pH paper orangish red
(d) will turn pH paper green