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Jhalak
Jhalak
Asked: November 22, 2020In: Class 8 Science

Explain why the sliding friction is less than the static friction.

NCERT Solutions for Class 8 Science Chapter 12 Important NCERT Questions 8th Chapter 12 Friction NCERT Books for Session 2022-2023 CBSE Board and State Board Questions No: 8

2020-2021cbsechapter 12class 8 scienceclass8frictionncertscience
  • 2 2 Answers
  • 452 Views
  • 22 Votes
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Meghana
Meghana
Asked: November 22, 2020In: Class 8 Science

The process that you saw in Activity 14.7 is used for purification of copper. A thin plate of pure copper and a thick rod of impure copper are used as electrodes. Copper from impure rod is sought to be transferred to the thin copper plate. Which electrode should be attached to the positive terminal of battery and why?

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: 12

2020-2021cbsechapter 14chemical effects of electric currentclass 8 scienceclass8ncertscience
  • 1 1 Answer
  • 721 Views
  • 17 Votes
  • 1
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Meghana
Meghana
Asked: November 22, 2020In: Class 8 Science

Prepare a list of objects around you that are electroplated.

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: 11

2020-2021cbsechapter 14chemical effects of electric currentclass 8 scienceclass8ncertscience
  • 1 1 Answer
  • 246 Views
  • 19 Votes
  • 1
Answer
Meghana
Meghana
Asked: November 22, 2020In: Class 8 Science

Paheli had heard that rainwater is as good as distilled water. So she collected some rainwater in a clean glass tumbler and tested it using a tester. To her surprise she found that the compass needle showed deflection. What could be the reasons?

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: 10

2020-2021cbsechapter 14chemical effects of electric currentclass 8 scienceclass8ncertscience
  • 1 1 Answer
  • 130 Views
  • 19 Votes
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Meghana
Meghana
Asked: November 22, 2020In: Class 8 Science

Is it safe for the electrician to carry out electrical repairs outdoors during heavy downpour? Explain.

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: 9

2020-2021cbsechapter 14chemical effects of electric currentclass 8 scienceclass8ncertscience
  • 1 1 Answer
  • 177 Views
  • 18 Votes
  • 1
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Meghana
Meghana
Asked: November 22, 2020In: Class 8 Science

A child staying in a coastal region tests the drinking water and also the seawater with his tester. He finds that the compass needle deflects more in the case of seawater. 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: 8

2020-2021cbsechapter 14chemical effects of electric currentclass 8 scienceclass8ncertscience
  • 1 1 Answer
  • 288 Views
  • 20 Votes
  • 1
Answer
Meghana
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

2020-2021cbsechapter 14chemical effects of electric currentclass 8 scienceclass8ncertscience
  • 2 2 Answers
  • 182 Views
  • 21 Votes
  • 2
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Meghana
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

2020-2021cbsechapter 14chemical effects of electric currentclass 8 scienceclass8ncertscience
  • 2 2 Answers
  • 129 Views
  • 20 Votes
  • 2
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Meghana
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

2020-2021cbsechapter 14chemical effects of electric currentclass 8 scienceclass8ncertscience
  • 2 2 Answers
  • 69 Views
  • 19 Votes
  • 2
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Meghana
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

2020-2021cbsechapter 14chemical effects of electric currentclass 8 scienceclass8ncertscience
  • 2 2 Answers
  • 119 Views
  • 19 Votes
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