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Home/ncert solutions 2020-2021

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Gurpreet Kaur
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Gurpreet Kaur
Asked: November 26, 2019In: Class 10

What happens when dilute hydrochloric acid is added to iron fillings?

Select the correct answers.

10 sciencechemistryclass 10ncert solutions 2020-2021
  • 2 2 Answers
  • 1k Views
  • 8 Votes
Answer
Gurpreet Kaur
Gurpreet Kaur
Asked: November 26, 2019In: Class 10

What is a balanced chemical equation?

Describe and give reactions if required.

10 sciencechemical reactions and equationschemistryclass 10class 10 science chaptar 1ncert solutions 2020-2021
  • 1 1 Answer
  • 456 Views
  • 7 Votes
Answer
Gurpreet Kaur
Gurpreet Kaur
Asked: November 26, 2019In: Class 10

Why should chemical equations be balanced?

Give answer with suitable examples.

10 sciencechemistryclass 10class 10 science chapter 1ncert solutions 2020-2021
  • 1 1 Answer
  • 424 Views
  • 4 Votes
Answer
Gurpreet Kaur
Gurpreet Kaur
Asked: November 26, 2019In: Class 10

What does one mean by exothermic and endothermic reactions?

Describe exothermic and endothermic reactions with examples.

10 science10 science chapter 1chemistryclass 10class 10 sciencencert solutions 2020-2021
  • 1 1 Answer
  • 12k Views
  • 7 Votes
Answer
Gurpreet Kaur
Gurpreet Kaur
Asked: November 26, 2019In: Class 10

Why is respiration considered an exothermic reaction?

During the respiration we take oxygen and release carbon dioxide and water.

10 science10 science chapter 1chemclass 10ncert solutions 2020-2021
  • 1 1 Answer
  • 472 Views
  • 6 Votes
Answer
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