Why are decomposition reactions called the opposite of combination reaction?
Which of the following is a physical change?
Balance the following chemical equations
Explain the following terms with one example of each
Which among the following statements is/are true?
What does one mean by exothermic and endothermic reaction?
Which of the following are exothermic processes?
Write the balanced chemical equation for the following
Why is respiration considered an exothermic reaction
When Ca(NO3)2 is heated, it gives CaO, NO2(g) and O2(g) .
Fe2O3 + 2AL -> AL2O3 + 2Fe
Explain the following in terms of gain or loss of
Oil and fat containing food items are flushed
Write a balanced chemical equation with state symbols for the following reactions
Identify the reducing agent in the following reaction.
What is a reduction reaction? Identify the substances that are oxidised and the substances that are reduced in the following react..
Assertion : Photosynthesis is considered as an endothermic reaction.
Reason : Energy gets released in the process of photosynthesi..
A shiny brown coloured element X on heating in air
Which among the following statement(s) is/are true? Exposure of silver chloride to sunlight for a long duration turns grey due to
Why is the amount of gas collected in one of the test tubes in
Give an example of a double displacement reaction
Which of the following reaction is characterised by the yellow colour of product
Study the reactions given below:
Which of the following chemical reactions will occur.
Write the balanced chemical equations
What is the difference between displacement and doubled displacement reactions?
Why should a magnesium ribbon be cleaned before burning in air?
Why does the colour of copper sulphate solution
Identify the substances that are oxidised and the substances that are reduced in the following reactions
Electrolysis of water is a decomposition reaction.
Complete the missing component/ variable given as X and Y in the following reaction.
What happens when dilute hydrochloric acid is added to iron filings?
State reason for the following.
Write the balanced equations for the following chemical reactions
A solution of a susbtance X is used for white washing
To indicate the presence of gaseous reactant or product, we use the symbol
Which among the following is (are) double displacement reaction(s)?
Which of the following statements about the given reaction are correct?
A dilute ferrous sulphate solution was gradually added to the beaker containing acidified permanganate solution.
Assertion : The following chemical equation is an example of thermal decomposition reaction
Reason : Heat gets released in the dec..
What is the difference between skeletal equation and balanced chemical equation? Give example
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