Class 8 Science

Meghana

Asked: November 22, 2020In: Class 8 Science

In case of a fire, before the firemen use the water hoses, they shut off the main electrical supply for the area. Explain why they do this.

NCERT Solutions for Class 8 Science Chapter 14 Important NCERT Questions 8th Chapter 14 Chemical Effects of Electric Current NCERT Books for Session 2022-2023 CBSE Board and State Board Questions No: 7

Meghana

Asked: November 22, 2020In: Class 8 Science

Does pure water conduct electricity? If not, what can we do to make it conducting?

NCERT Solutions for Class 8 Science Chapter 14 Important NCERT Questions 8th Chapter 14 Chemical Effects of Electric Current NCERT Books for Session 2022-2023 CBSE Board and State Board Questions No: 6

Poll

Meghana

Asked: November 22, 2020In: Class 8 Science

A tester is used to check the conduction of electricity through two liquids, labelled A and B. It is found that the bulb of the tester glows brightly for liquid A while it glows very dimly for liquid B. You would conclude that

NCERT Solutions for Class 8 Science Chapter 14 Important NCERT Questions 8th Chapter 14 Chemical Effects of Electric Current NCERT Books for Session 2022-2023 CBSE Board and State Board Questions No: 5

Meghana

Asked: November 22, 2020In: Class 8 Science

When the free ends of a tester are dipped into a solution, the magnetic needle shows deflection. Can you explain the reason?

NCERT Solutions for Class 8 Science Chapter 14 Important NCERT Questions 8th Chapter 14 Chemical Effects of Electric Current NCERT Books for Session 2022-2023 CBSE Board and State Board Questions No: 2

Meghana

Asked: November 22, 2020In: Class 8 Science

Fill in the blanks: The process of depositing a layer of any desired metal on another material by means of electricity is called ____________.

NCERT Solutions for Class 8 Science Chapter 14 Important NCERT Questions 8th Chapter 14 Chemical Effects of Electric Current NCERT Books for Session 2022-2023 CBSE Board and State Board Questions No: 1 Part: d

Meghana

Asked: November 22, 2020In: Class 8 Science

Fill in the blanks: If you pass current through copper sulphate solution, copper gets deposited on the plate connected to the ____________ terminal of the battery.

NCERT Solutions for Class 8 Science Chapter 14 Important NCERT Questions 8th Chapter 14 Chemical Effects of Electric Current NCERT Books for Session 2022-2023 CBSE Board and State Board Questions No: 1 Part: c

Meghana

Asked: November 22, 2020In: Class 8 Science

The passage of an electric current through a solution causes ____________ effects.

NCERT Solutions for Class 8 Science Chapter 14 Important NCERT Questions 8th Chapter 14 Chemical Effects of Electric Current NCERT Books for Session 2022-2023 CBSE Board and State Board Questions No: 1 Part: b

Meghana

Asked: November 22, 2020In: Class 8 Science

Fill in the blanks: Most liquids that conduct electricity are solutions of _, and __.

NCERT Solutions for Class 8 Science Chapter 14 Important NCERT Questions 8th Chapter 14 Chemical Effects of Electric Current NCERT Books for Session 2022-2023 CBSE Board and State Board Questions No: 1 Part: a

Kyra

Asked: November 22, 2020In: Class 8 Science

Your parents are going to buy a house. They have been offered one on the roadside and another three lanes away from the roadside. Which house would you suggest your parents should buy? Explain your answer.

NCERT Solutions for Class 8 Science Chapter 13 Important NCERT Questions 8th Chapter 13 Sound NCERT Books for Session 2022-2023 CBSE Board and State Board Questions No: 11

Kyra

Asked: November 22, 2020In: Class 8 Science

Explain in what way noise pollution is harmful to humans.

NCERT Solutions for Class 8 Science Chapter 13 Important NCERT Questions 8th Chapter 13 Sound NCERT Books for Session 2022-2023 CBSE Board and State Board Questions No: 10

Category: Class 8 Science

In case of a fire, before the firemen use the water hoses, they shut off the main electrical supply for the area. Explain why they do this.

Does pure water conduct electricity? If not, what can we do to make it conducting?

A tester is used to check the conduction of electricity through two liquids, labelled A and B. It is found that the bulb of the tester glows brightly for liquid A while it glows very dimly for liquid B. You would conclude that

When the free ends of a tester are dipped into a solution, the magnetic needle shows deflection. Can you explain the reason?

Fill in the blanks: The process of depositing a layer of any desired metal on another material by means of electricity is called ____________.

Fill in the blanks: If you pass current through copper sulphate solution, copper gets deposited on the plate connected to the ____________ terminal of the battery.

The passage of an electric current through a solution causes ____________ effects.

Fill in the blanks: Most liquids that conduct electricity are solutions of _, and __.

Your parents are going to buy a house. They have been offered one on the roadside and another three lanes away from the roadside. Which house would you suggest your parents should buy? Explain your answer.

Explain in what way noise pollution is harmful to humans.

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Category: Class 8 Science

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