11- The fats in our body contains …………..
(A) Bases
(B) Acids
(C) Salts
(D) Fatty acids
12- The word acid comes from Latin ‘acere’ which means
(A) Sweet
(B) Bitter
(C) Salt
(D) Source
13- …………….are used to test substances whether a substance is acidic or basic.
(A) Indicators
(B) Neutral
(C) Bases
(D) Acidic
14- Which of the following is/are an example of naturally occurring indicators?
(A) Turmeric
(B) Litmus
(C) Gudhal (China rose Petals)
(D) All of the above
15- Match the following
| Name of acid found in
a. Acetic acid 1. Vinegar b. Formic acid 2. Ant’s sting c. Citric acid 3. Oranges d. Lactic acid 4. Curd |
(A) a-4, b-3, c-2, d-1
(B) a-2, b-1, c-3, d-4
(C) a-1, b-2, c-3, d-4
(D) None of the above
16- Which type of acid is found in spinach?
(A) Ascorbic acid
(B) Lactic
(C) Oxalic acid
(D) Tartaric acid
17- Amla, Citrus fruits are rich in
(A) Ascorbic acid
(B) Oxalic
(C) Tartaric
(D) None of the above
18- Which type of acid is found in tamarind, grapes and unripe mangoes?
(A) Citric acid
(B) Tartaric acid
(C) Acetic acid
(D) None of the above
19- Match the following
| Name of base found in
a. Calcium hydroxide 1. Lime water b. Ammonium hydroxide 2. Window cleaner c. Potassium hydroxide/ 3. Soap Sodium hydroxide d. Magnesium hydroxide 4. Milk magnesia |
(A) a-4, c-3, b-2, a-1
(B) a-2, b-1, c-3, d-4
(C) a-1, b-2, c-3, d-4
(D) None of the above
20- Most commonly found natural dye in nature is litmus. It is extracted from …………….plant.
(A) Amarbel
(B) Amla
(C) Mahua
(D) Lichens
ANSWERS:
11-(D), 12-(D), 13-(A), 14-(D), 15-(C), 16-(C), 17-(A), 18-(B), 19-(C), 20-(D)