MCQ on Acids- Bases and Salts
1- Acids are ……in taste.
(A) Sour
(B) Sweet
(C) Bitter
(D) None of the above
2- Presence of ……………changes the colour of blue litmus to red.
(A) Acids
(B) Bases
(C) Potassium
(D) None of the above
3-Bases are …………in taste.
(A) Sour
(B) Bitter
(C) Sweet
(D) None of the above
4- Presence of …………..changes the colour of the red litmus to blue.
(A) Sulphur
(B) Acids
(C) Bases
(D) None of the above
5- Which of the following is the natural indicator of acids?
(A) Litmus solution
(B) Turmeric
(C) Red Cabbage leaves
(D) All of the above
6- Which of the following is an example of Synthetic indicator?
(A) Sulphuric acid
(B) Methyl orange
(C) Sodium hydroxide
(D) All of the above
7- Phenolphthalein is a
(A) Natural indicator
(B)Synthetic indicator
(C) Both A and B
(D) None of the above
8- Which of the following is/are an example of olfactory indicators?
(A) Onion
(B) Clove
(C) Vanilla
(D) All of the above
9- Litmus solution is a …………….dye , which is extracted from Lichen plant.
(A) Yellow
(B) Red
(C) Orange
(D) Purple
10- When the litmus solution is neither acidic nor basic its colour is………………
(A) Purple
(B) Red
(C) Blue
(D) Orange
ANSWERS:
1-(A), 2-(A), 3-(B), 4-(C), 5-(D), 6-(B), 7-(B), 8-(D), 9-(D), 10-(A)