Harikesh

Asked: December 15, 2020In: Class 10 Science

A metal strips X is dipped in blue coloured salt solution YSO₄. After some time, a layer of metal ‘Y’ Is formed on metal strips X. Metal X is used is galvanization whereas metal Y is used for making Electric wires. (a) what could be metal X and Y? (b) Name the Metal salt YSO₄. (C) What Type of Chemical reaction takes place between X and YSO₄? Write the balanced chemical equation.

NCERT Solutions for Class 1 Science Chapter 1 Important Board Questions Chemical Reactions and Equations NCERT Books for Session 2022-2023 CBSE Board and UP Board Short Type Question Questions No: 15

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Asked: December 15, 2020In: Class 10 Science

A metal salt mx when exposed to light split up to form metal metal M and gas X₂. metal m is used to make ornaments whereas gas X₂ is used to make ornaments whereas gas X₂ is used in making bleaching Powder. The salt MX is used in black & white photography. (a) Identify the metal M and Gas X₂. (b) Identify MX. (c) Write down the chemical reaction when salt MX is exposed to sunlight.

NCERT Solutions for Class 1 Science Chapter 1 Important Board Questions Chemical Reactions and Equations NCERT Books for Session 2022-2023 CBSE Board and UP Board Short Type Question Questions No: 14

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Asked: December 15, 2020In: Class 10 Science

Compound x decomposes to form compound Y and co₂ gas. Ccompound Y is used in manufacturing of cement. (a) Name the compound ‘X’ and ‘Y’. (b) Write the chemical equation for this reaction.

NCERT Solutions for Class 1 Science Chapter 1 Important Board Questions Chemical Reactions and Equations NCERT Books for Session 2022-2023 CBSE Board and UP Board Short Type Question Questions No: 13

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Asked: December 15, 2020In: Class 10 Science

Give reasons: Brown coloured copper powder on heating in air turns black coloured substance.

NCERT Solutions for Class 1 Science Chapter 1 Important Board Questions Chemical Reactions and Equations NCERT Books for Session 2022-2023 CBSE Board and UP Board Short Type Question Questions No: 12 Part: b

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Asked: December 15, 2020In: Class 10 Science

Give reasons: White Silver chloride turns grey in sunlight.

NCERT Solutions for Class 1 Science Chapter 1 Important Board Questions Chemical Reactions and Equations NCERT Books for Session 2022-2023 CBSE Board and UP Board Short Type Question Questions No: 12 Part: a

devdutt padikkal

Asked: December 15, 2020In: Class 10 Maths

Express the number as a product of its prime factors: 156

NCERT Solutions for Class 10 Maths Chapter 1 Important NCERT Questions Real Numbers NCERT Books for Session 2022-2023 CBSE Board and UP Board Others state Board EXERCISE 1.2 Page No:7 Questions No:1 Part-2

Rahul Singh

Asked: December 15, 2020In: Class 10 Maths

Given that HCF (306, 657) = 9, find LCM (306, 657).

NCERT Solutions for Class 10 Maths Chapter 1 Important NCERT Questions Real Numbers NCERT Books for Session 2022-2023 CBSE Board and UP Board Others state Board EXERCISE 1.2 Page No:11 Questions No:4

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Asked: December 14, 2020In: Class 10 Science

What is decomposition reaction? Explain with the help of an example.

NCERT Solutions for Class 1 Science Chapter 1 Important Board Questions Chemical Reactions and Equations NCERT Books for Session 2022-2023 CBSE Board and UP Board Short Type Question Questions No: 2

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Asked: December 14, 2020In: Class 10 Science

Define combination reaction. Give two examples of combination reaction which is exothermic in nature.

NCERT Solutions for Class 1 Science Chapter 1 Important Board Questions Chemical Reactions and Equations NCERT Books for Session 2022-2023 CBSE Board and UP Board Short Type Question Questions No: 1

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Asked: December 14, 2020In: Class 10 Science

what happens when quick lime is added to water ?

NCERT Solutions for Class 1 Science Chapter 1 Important Board Questions Chemical Reactions and Equations NCERT Books for Session 2022-2023 CBSE Board and UP Board Questions No: 20

Harikesh

Compound x decomposes to form compound Y and co₂ gas. Ccompound Y is used in manufacturing of cement. (a) Name the compound ‘X’ and ‘Y’. (b) Write the chemical equation for this reaction.

Give reasons: Brown coloured copper powder on heating in air turns black coloured substance.

Give reasons: White Silver chloride turns grey in sunlight.

Express the number as a product of its prime factors: 156

Given that HCF (306, 657) = 9, find LCM (306, 657).

What is decomposition reaction? Explain with the help of an example.

Define combination reaction. Give two examples of combination reaction which is exothermic in nature.

what happens when quick lime is added to water ?

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