Question

(5) Which materials have natural acid in them ?
(6) How is the word acid originate ?
iterin
(7) What are bases ?
sed
(8) What is the effect of acid and base on China rose indicator ?
subtances
(9) What is the effect of acid and base on litmus paper ?
04.
(10) Which acid is present in our stomach ?
es :
(11) What is the cause of indigestion ?​

Answer 1

Answer:

5. Citrus fruits and their juices are the best natural sources of citric acid ( 3 ). In fact, the word citric originates from the Latin word citrus ( 2 ). Examples of citrus fruits include: lemon..

6.The word acid comes from the Latin word acere, which means "sour." Most acids taste sour, i.e. vinegar, sour milk, lemon juice.

7. A base is a substance that can neutralize the acid by reacting with hydrogen ions. Most bases are minerals that react with acids to form water and salts. Bases include the oxides, hydroxides and carbonates of metals. The soluble bases are called alkalis. Sodium hydroxide is an alka...

8.China rose turns acidic solution to dark pink or magenta color, turns basic solution to green color and has no change in color for neutral solutions. Explanation: China rose is a natural indicator and is used to detect the nature of solution to be acidic or basic.

9.The main use of litmus is to test whether a solution is acidic or basic. Blue litmus paper turns red under acidic conditions and red litmus paper turns blue under basic or alkaline conditions, with the color change occurring over the pH range 4.5–8.3 at 25 °C (77 °F).

10.The hydrochloric acid in the gastric juice breaks down the food and the digestive enzymes split up the proteins. The acidic gastric juice also kills bacteria.

11.Indigestion can have causes that aren't due to underlying disease. Examples include eating too much, drinking too much, food intolerance or taking pills on an empty stomach.

Explanation:

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