Question 19.
Which of the following is acidic in nature?

(a) Lime juice
(b) Human blood
(c) Lime water
(d) Antacid

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Solution

Lime juice is acidic in nature because it contains citric acid. Human blood is slightly basic (i.e., having pH 7.8). Lime water and antacid are basic in nature as they contain hydroxide ${OH}^{-}$ ion. Hence, option (a) is correct.

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Q. Question 19.
Which of the following is acidic in nature?

(a) Lime juice
(b) Human blood
(c) Lime water
(d) Antacid

Q. When limestone is heated around 1270 K we get:

Question 19

Fill the blanks in the following sentences
(a) Lemon juice and vinegar taste ___ because they contain ___
(b) Turmeric and litmus are ___acid-base indicators.
(c) Phenolphthalein gives___colour with lime water
(d) When an acidic solution is mixed with a basic solution, they___ each other forming a and water.

Question 11

Which of the following is an acid-base indicator?
(a) Vinegar
(b) Lime water
(c) Turmeric
(d) Baking soda

Explain the following:

(a) Calamine lotion is applied on bee stings.
(b) Antacids are taken in case of acidity in stomach.
(c) Slaked lime is added to factory waste before it is discharged into rivers.

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Basicity of Acids

Standard IX Chemistry

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Question 19. Which of the following is acidic in nature? (a) Lime juice (b) Human blood (c) Lime water (d) Antacid

Lime juice is acidic in nature because it contains citric acid. Human blood is slightly basic (i.e., having pH 7.8). Lime water and antacid are basic in nature as they contain hydroxide OH− ion. Hence, option (a) is correct.

Question 19.
Which of the following is acidic in nature?

(a) Lime juice
(b) Human blood
(c) Lime water
(d) Antacid

Lime juice is acidic in nature because it contains citric acid. Human blood is slightly basic (i.e., having pH 7.8). Lime water and antacid are basic in nature as they contain hydroxide ${OH}^{-}$ ion. Hence, option (a) is correct.