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Chapter 1 Class 10 - Chemical Reactions and Equations | 5 questions | about 4 minutes

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Question 1 of 5
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Question 1 of 5
NCERT Exemplar
The following reaction is used for the preparation of oxygen gas in the laboratory

$$ 2 \mathrm{KClO}_3(\mathrm{~s}) \xrightarrow[\text { Catalyst }]{\text { Heat }} 2 \mathrm{KCl}(\mathrm{~s})+3 \mathrm{O}_2(\mathrm{~g}) $$

Which of the following statement(s) is(are) correct about the reaction?
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Question 2 of 5
Which of the following reactions is an endothermic reaction?
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Question 3 of 5
NCERT Exemplar
A dilute ferrous sulphate solution was gradually added to the beaker containing acidified permanganate solution. The light purple colour of the solution fades and finally disappears.
Which of the following is the correct explanation for the observation?
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Question 4 of 5
NCERT Exemplar
In which of the following chemical equations, the abbreviations represent the correct states of the reactants and products involved at reaction temperature?
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Question 5 of 5
Assertion (A): A chemical reaction becomes faster at higher temperatures.  
Reason (R):  At higher temperatures, molecular  motion becomes more rapid.
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