Tiwari Academy Discussion

Ojesh

Asked: November 25, 2020In: Class 6 Science

What is winnowing? Where is it used?

NCERT Solutions for Class 6 Science Chapter 5 Important NCERT Questions Class 6th Chapter 6 Separation of Substances NCERT Books for Session 2022-2023 CBSE Board and State Board Questions No: 2

Ojesh

Asked: November 25, 2020In: Class 6 Science

Why do we need to separate different components of a mixture? Give two examples.

NCERT Solutions for Class 6 Science Chapter 5 Important NCERT Questions Class 6th Chapter 6 Separation of Substances NCERT Books for Session 2022-2023 CBSE Board and State Board Questions No: 1

Harshita Patel

Asked: November 23, 2020In: Class 7 Science

Blue litmus paper is dipped in a solution. It remains blue. What is the nature of the solution? Explain.

NCERT Solutions for Class 7 Science Chapter 5 Important NCERT Questions 7th Chapter 5 Acids, Bases and Salts NCERT Books for Session 2022-2023 CBSE Board and State Board Questions No: 10

Harshita Patel

Asked: November 23, 2020In: Class 7 Science

Three liquids are given to you. One is hydrochloric acid, another is sodium hydroxide and third is a sugar solution. How will you identify them? You have only turmeric indicator.

NCERT Solutions for Class 7 Science Chapter 5 Important NCERT Questions 7th Chapter 5 Acids, Bases and Salts NCERT Books for Session 2022-2023 CBSE Board and State Board Questions No: 9

Harshita Patel

Asked: November 23, 2020In: Class 7 Science

Explain why: Factory waste is neutralized before disposing it into the water bodies.

NCERT Solutions for Class 7 Science Chapter 5 Important NCERT Questions 7th Chapter 5 Acids, Bases and Salts NCERT Books for Session 2022-2023 CBSE Board and State Board Questions No: 8 part: c

Harshita Patel

Asked: November 23, 2020In: Class 7 Science

Explain why: Calamine solution is applied on the skin when an ant bites.

NCERT Solutions for Class 7 Science Chapter 5 Important NCERT Questions 7th Chapter 5 Acids, Bases and Salts NCERT Books for Session 2022-2023 CBSE Board and State Board Questions No: 8 part: b

Harshita Patel

Asked: November 23, 2020In: Class 7 Science

Explain why: An antacid tablet is taken when you suffer from acidity.

NCERT Solutions for Class 7 Science Chapter 5 Important NCERT Questions 7th Chapter 5 Acids, Bases and Salts NCERT Books for Session 2022-2023 CBSE Board and State Board Questions No: 8 part: a

Harshita Patel

Asked: November 23, 2020In: Class 7 Science

Dorji has a few bottles of soft drink in his restaurant. But, unfortunately, these are not labelled. He has to serve the drinks on the demand of customers. One customer wants acidic drink, another wants basic and third one wants neutral drink. How will Dorji decide which drink is to be served to whom?

NCERT Solutions for Class 7 Science Chapter 5 Important NCERT Questions 7th Chapter 5 Acids, Bases and Salts NCERT Books for Session 2022-2023 CBSE Board and State Board Questions No: 7

Harshita Patel

Asked: November 23, 2020In: Class 7 Science

Describe the process of neutralisation with the help of an example.

NCERT Solutions for Class 7 Science Chapter 5 Important NCERT Questions 7th Chapter 5 Acids, Bases and Salts NCERT Books for Session 2022-2023 CBSE Board and State Board Questions No: 5

Harshita Patel

Asked: November 23, 2020In: Class 7 Science

Is the distilled water acidic/basic/neutral? How would you verify it?

NCERT Solutions for Class 7 Science Chapter 5 Important NCERT Questions 7th Chapter 5 Acids, Bases and Salts NCERT Books for Session 2022-2023 CBSE Board and State Board Questions No: 4

What is winnowing? Where is it used?

Why do we need to separate different components of a mixture? Give two examples.

Blue litmus paper is dipped in a solution. It remains blue. What is the nature of the solution? Explain.

Three liquids are given to you. One is hydrochloric acid, another is sodium hydroxide and third is a sugar solution. How will you identify them? You have only turmeric indicator.

Explain why: Factory waste is neutralized before disposing it into the water bodies.

Explain why: Calamine solution is applied on the skin when an ant bites.

Explain why: An antacid tablet is taken when you suffer from acidity.

Describe the process of neutralisation with the help of an example.

Is the distilled water acidic/basic/neutral? How would you verify it?

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