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10th Chemistry: Ch-01 Chemical Reactions and Equations

Syllabus:
👉 Chemical Reaction Involve Chemical changes 
👉 Formation of new substances by the rearrangement of atoms
👉 Reactants and products
👉 Characteristics of chemical reactions 
👉 Evaluation of a gas
👉 Formation of a precipitate 
👉 Change in colour
👉 Change in temperature and change in state
👉 Chemical equations
👉 Short – Hand method of Representing a chemical reaction 
👉 Balanced chemical equations and unbalanced chemical equations
👉 Balancing of chemical equations to satisfy the law of conservation of mass in chemical reactions 
👉 To make chemical equations more informative 
👉 By indicating the physical states of Reactants and products in the equation 
👉 By indicating the heat changes in the equation 
👉 By indicating the conditions under which the reaction takes place 
👉 Important examples of writing of balanced chemical equations 
👉 Types of chemical reactions 
👉 Combination reactions 
👉 Decomposition reactions 
👉 Displacement reaction 
👉 Double displacement reaction 
👉 Oxidation and reduction reaction 
👉 Oxidising agents and reducing agents 
👉 Uses of decomposition reactions 
👉 Decomposition reaction in our body 
👉 Effect of oxidation reactions in everybody life 
👉 Corrosion of metals and rancidity of fiid
👉 Preventing of rancidity of food
👉 Adding anti- oxidants 
👉 Packaging in nitrogen gas
👉 Keeping in a refrigerator 
👉 Storing in anti- tight containers 
👉 Away from light.
 

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Home/Class -10: Chemistry/10th Chemistry: Ch-01 Chemical Reactions and Equations/Page 2
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Mukesh PanditNCT#
Asked: November 30, 2022In: 10th Chemistry: Ch-01 Chemical Reactions and Equations

What does one mean by exothermic and exothermic reactions? Give examples.

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Asked: November 30, 2022In: 10th Chemistry: Ch-01 Chemical Reactions and Equations

Write the balanced chemical equations for the following reactions.

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Calcium hydroxide + carbon dioxide ➡️ calcium carbonate + water Zinc + silver nitrate ➡️ zinc nitrate + Silver aluminium + copper chloride ➡️ aluminium chloride + copper Barium Chloride + potassium Sulphate ➡️ Barium Sulphate + potassium chloride

  1. Calcium hydroxide + carbon dioxide ➡️ calcium carbonate + water
  2. Zinc + silver nitrate ➡️ zinc nitrate + Silver
  3. aluminium + copper chloride ➡️ aluminium chloride + copper
  4. Barium Chloride + potassium Sulphate ➡️ Barium Sulphate + potassium chloride
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Asked: November 30, 2022In: 10th Chemistry: Ch-01 Chemical Reactions and Equations

Balance the following chemical equation ls.

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HNO₃ + Ca(OH)₂ ➡️ Ca(NO₃)₂ + H₂O NaOH + H2SO4 ➡️ Na2SO4 + H2O NaCl + AgNO3 ➡️ AgCl + NaNO3 BaCl2 + H2SO4 ➡️ BaSO4 + HCl

  • HNO₃ + Ca(OH)₂ ➡️ Ca(NO₃)₂ + H₂O
  • NaOH + H2SO4 ➡️ Na2SO4 + H2O
  • NaCl + AgNO3 ➡️ AgCl + NaNO3
  • BaCl2 + H2SO4 ➡️ BaSO4 + HCl
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Mukesh PanditNCT#
Asked: November 30, 2022In: 10th Chemistry: Ch-01 Chemical Reactions and Equations

Translate the following statements into chemical equations and then balance them.

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Hydrogen gas combines with nitrogen to form ammonia. Hydrogen sulphide gas burns in air to give water and sulphur dioxide. Barium chloride reacts with aluminum sulphate to give aluminum chloride and a precipitate of barium sulphate. Potassium metal reacts with water to give ...Read more

  • Hydrogen gas combines with nitrogen to form ammonia.
  • Hydrogen sulphide gas burns in air to give water and sulphur dioxide.
  • Barium chloride reacts with aluminum sulphate to give aluminum chloride and a precipitate of barium sulphate.
  • Potassium metal reacts with water to give potassium hydroxide and hydrogen gas.
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Asked: November 30, 2022In: 10th Chemistry: Ch-01 Chemical Reactions and Equations

What is a balanced chemical equation? Why should chemical equations be balanced?

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Asked: November 30, 2022In: 10th Chemistry: Ch-01 Chemical Reactions and Equations

What happens when dilute hydrochloric acid is added to iron filling? Tick the correct answer.

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Asked: November 30, 2022In: 10th Chemistry: Ch-01 Chemical Reactions and Equations

Fe₂O₃ + 2Al ➡️ Al₂O₃ + 2Fe

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The above reaction is an example of a

The above reaction is an example of a

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Asked: November 30, 2022In: 10th Chemistry: Ch-01 Chemical Reactions and Equations

Which of the statements about the reaction below are incorrect?

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2PbO(s) + C(s) ➡️ 2Pb(s) + CO₂(g) a. Lead is getting reduced. b. carbon dioxide is getting oxidised. c. carbon is getting oxidised. d. lead oxide is getting reduced.

2PbO(s) + C(s) ➡️ 2Pb(s) + CO₂(g)

a. Lead is getting reduced.

b. carbon dioxide is getting oxidised.

c. carbon is getting oxidised.

d. lead oxide is getting reduced.

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Asked: November 27, 2022In: 10th Chemistry: Ch-01 Chemical Reactions and Equations

Write one equation each for decomposition reactions where energy is supplied in the form of heat, light or electricity.

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Asked: November 27, 2022In: 10th Chemistry: Ch-01 Chemical Reactions and Equations

What is the difference between displacement and double displacement reactions. Write equations for these reactions.

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