What do you mean by the family of salts?

The salts having the same positive ions are said to belong to a family of salts. Family of Salts means a group of salts that have the same acidic or basic radicals. For example, sodium chloride and sodium sulphate belong to the same family of salts called sodium salts.

What is a neutralisation reaction?

In the neutralisation reaction, an acid and a base react to form water and salt and involve the combination of hydrogen ions and hydroxyl ions to generate water. For example: HCl + NaOH → NaCl + H 2 O

Give any two industrial use of washing soda, other than washing clothes.

Industrial uses of washing soda are as follows: (i) Washing soda has used the manufactures of glass and paper industries. (ii) It is also used in soda-acid fire extinguishers.

What happens when washing soda crystals are exposed to air?

The crystals of washing soda undergo efflorescence when they are exposed to air. When crystals of washing soda are exposed to air, they lose crystallisation water and turn to white powder. This process of losing water of crystallisation when exposed to air is called efflorescence.

Name the natural sources of (i) acetic acid and (ii) uric acid.

The natural sources of some acids are as follows: (i) Acetic acid = apples, grapes, pineapple, strawberries, and oranges, etc. (ii) Uric acid = fish, seafood, some meat, shellfish, etc. Note: Fermenting fruits make acetic acid naturally. Some bacteria also excrete it, such as the highest common Acetobacter organisms.

The pH of gastric juices extracted from the stomach of two persons A and B were found to be 1 and 3 respectively. The stomach juice of which person is more acidic?

The pH of gastric juice of person A is 1 is more acidic. The pH is defined as the measure of hydrogen ion concentration used to measure the acidity or alkalinity of a given solution. A pH value is a number from 1 to 14 , with 7 as the middle (neutral) point. Values below 7 indicate acidity and the values above 7 indicate basicity.

E M B I B E

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR SCIENCE>Chapter 2 - Acids, Bases and Salts>meghalaya-2018>Q 2

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10th Meghalaya Board

IMPORTANT

Earn 100

Write down two uses of sodium hydrogen carbonate.

Important Questions on Acids, Bases and Salts

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10th Meghalaya Board

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR SCIENCE>Chapter 2 - Acids, Bases and Salts>meghalaya-2018>Q 3

What are monoacidic bases and diacidic bases? Give one example of each.

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10th Meghalaya Board

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR SCIENCE>Chapter 2 - Acids, Bases and Salts>meghalaya-2018>Q 4

What is neutralization?

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10th Meghalaya Board

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR SCIENCE>Chapter 2 - Acids, Bases and Salts>meghalaya-2018>Q 5

Give any two uses of ethanoic acid.

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10th Meghalaya Board

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR SCIENCE>Chapter 2 - Acids, Bases and Salts>meghalaya-2018>Q 6

Give two uses of sodium carbonate.

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10th Meghalaya Board

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR SCIENCE>Chapter 2 - Acids, Bases and Salts>meghalaya-2019>Q 7

A compound that is prepared from gypsum has the property of hardening when mixed with the proper quantity of water. Identify the compound.

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10th Meghalaya Board

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR SCIENCE>Chapter 2 - Acids, Bases and Salts>meghalaya-2019>Q 8

A compound that is prepared from gypsum has the property of hardening when mixed with the proper quantity of water. Write the chemical name of the compound.

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10th Meghalaya Board

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR SCIENCE>Chapter 2 - Acids, Bases and Salts>meghalaya-2019>Q 9

A compound that is prepared from gypsum has the property of hardening when mixed with the proper quantity of water. For what purpose it is used in hospitals?

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10th Meghalaya Board

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR SCIENCE>Chapter 2 - Acids, Bases and Salts>meghalaya-2019>Q 10

What is meant by the term 'pH' of a solution?