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तामिळनाडू बोर्ड ऑफ सेकेंडरी एज्युकेशनएस.एस.एल.सी. (इंग्रजी माध्यम) इयत्ता १०

What is called thermolysis reactions?

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प्रश्न

What is called thermolysis reactions?

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उत्तर

A chemical reaction is a process in which an old bond breaks up and a new chemical bond gets formed. Thermolysis chemical reactions are a special type of chemical reaction in which the reactant gets decomposed by heat. For example,

\[\ce{CaCO3_{(s)}⇌[Heat]CaO_{(s)} + CO2_{(g)}}\]

\[\ce{2HgO_{(s)} ->[Heat]2Hg_{(l)} + O2_{(g)}}\]

In these reactions, heat is supplied to break the bonds, so generally, they are endothermic in nature.

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पाठ 10: Types of Chemical Reactions - Evaluation [पृष्ठ १५३]

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सामाचीर कलवी Science [English] Class 10 SSLC TN Board
पाठ 10 Types of Chemical Reactions
Evaluation | Q VI. 1. | पृष्ठ १५३

संबंधित प्रश्‍न

Translate the following statement into a chemical equation and then balance the equation:

Barium chloride reacts with zinc sulphate to give zinc chloride and barium sulphate.


Balance the following equations:

\[\ce{Al(OH)3 -> Al2O3 + H2O}\]


Potassium chlorate (KClO3) on heating forms potassium chloride and oxygen. Write a balanced equation for this reaction and indicate the evolution of gas.


Raisins are wiped off gently before final weighing with the help of


Match column A with column B. 

Column A Column B
(a) Blue salt changes to white and then black (i) Ammonium dichromate
(b) Orange coloured compound changes to green. (ii) Iodine
(c) Red compound changes to brown and then yellow. (iii) Zinc Nitrate
(d) White to yellow when hot and white when cold. (iv) Copper sulphate
(e) Violet solid changes to violet vapours. (v) Red Lead

Complete the given chemical reaction.

\[\ce{CuSO_{4(aq)} + Fe_{(s)} ->}\]______ + ______


Balance the given chemical reaction as per the instructions below.

\[\ce{NaOH + H2SO4 -> Na2SO4 + H2O}\]

Balance the equation with proper coefficient and rewrite the equation.


Write the skeleton equation for the following word equation and then balance them.

  1. Carbon + Oxygen → Carbon dioxide.
  2. Phosphorus + Chlorine → Phosphorus pentachloride.
  3. Sulphur + Oxygen → Sulphur dioxide.
  4. Magnesium + hydrogen → Magnesium + Hydrogen chloride chloride.

Which among the following is(are) double displacement reaction(s)?

  1. `"Pb" + "CuCl"_2 -> "PbCl"_2 + "Cu"`
  2. `"Na"_2"SO"_4 + "BaCl"_2 -> "BaSO"_4 + 2"NaCl"`
  3. `"C" + "O"_2 -> "CO"_2`
  4. `"CH"_4 + 2"O"_2 -> "CO"_2 + 2"H"_2"O"`

Which of the following is the correct observation of the reaction shown in the above set up?


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