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Is Burning of Natural Gas an Endothermic Reaction Or an Exothermic Reaction? - Science

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प्रश्न

Is Burning of natural gas an endothermic reaction or an exothermic reaction?

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उत्तर

Burning of natural gas: Exothermic reaction
Burning of natural gas releases a huge amount of heat energy.

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पाठ 1: Chemical Reactions and Equations - Exercise 1 [पृष्ठ २१]

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लखमीर सिंह Chemistry (Science) [English] Class 10
पाठ 1 Chemical Reactions and Equations
Exercise 1 | Q 35.5 | पृष्ठ २१

व्हिडिओ ट्यूटोरियलVIEW ALL [4]

संबंधित प्रश्‍न

2 mL of sodium hydroxide solution is added to a few pieces of granulated zinc metal taken in a test tube. When the contents are warmed, a gas evolves which is bubbled through a soap solution before testing. Write the equation of the chemical reaction involved and the test to detect the gas. Name the gas which will be evolved when the same metal reacts with dilute solution of a strong acid.


Complete and balance the following equation:

CA (OH)2  +  .............          CaCO3    +   H2O


Write complete balanced equation for the following reaction:

Sulphur dioxide (gas) + Oxgyen (gas)   Sulphur trioxide (gas)


Balance the gievn equation:

NaOH + H2SO4  Na2SO4 + H2O


Write symbolic representation for the following word equation and balance them :

Calcium oxide + Water → Calcium hydroxide


Balance the following equation .

N2 + O2 → NO


Balance the following equation Also name the product formed.

`"K" + "CI"_2 → "KCI"`


While performing the experiment with raisins to determine the percentage of water absorbed by them, a student made following measurements:

Mass of water in the beaker = 40 g

Mass of raisins before soaking = 5 g

Mass of raisins after soaking for 2 hours = 8 g

Mass of water left in the beaker after the experiment = 35 g

The percentage of water absorbed by raisins is:


\[\ce{MnO2 + 4HCl -> MnCl2 + 2H2O + Cl2}\]

0.02 moles of pure MnO2 is heated strongly with conc. HCl. Calculate moles of salt formed.


Give a balanced equation for addition of iron to copper [II] sulphate solution. State the change in colour seen.


In certain reaction a change of state is observed i.e. solid to liquid, liquid to gas etc. – State the change of state of the products – to give the respective reactant.

2H2 + O2 → 2H2O


Name the following:

The silvery residue obtained on heating mercury [II] oxide.


Give an example of a chemical equation in which two reactants form:

two product


\[\ce{2KClO3->[MnO2] 2KCl + 3O2[g] - is a balanced equation.}\]

Give a reason why the above equation is balanced.


Balance the following simple equation:

SO2   +   O2  ⇌  SO3 


Balance the following simple equation:

H2S   +   Cl2  →  S  +  HCl 


Complete the given chemical reaction.

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


Write an Explanation.

Balanced equations


Why should a magnesium ribbon be cleaned before burning in air?


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