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.

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

The pH is defined as the measure of hydrogen ion concentration used to measure the acidity or alkalinity of a given solution. It can be denoted as – log [ H + ] .

E M B I B E

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR SCIENCE>Chapter 2 - Acids, Bases and Salts>meghalaya-2020>Q 18

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10th Meghalaya Board

IMPORTANT

Earn 100

What do you mean by the family of salts?

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 1

Which of the following is a Bronsted-Lowry acid ?

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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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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

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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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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-2020>Q 14

Write the chemical formula for washing soda.

$A : {Na}_{2} {CO}_{3} B : {NaHCO}_{3} C : NaOH$ (Enter your correct answer as $A, B,$ or $C$ )