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प्रश्न
Define the following type of chemical change or reaction with a suitable example.
Double decomposition reaction
उत्तर
Double decomposition reaction:
“Those reactions in which two compounds react by an exchange of ions to form two new compounds are called double displacement reactions”.
\[\ce{\underset{\text{silver nitrate}}{AgNO3} + \underset{\text{sodium chloride}}{NaCl}->\underset{\text{white ppt. (silver chloride)}}{AgCl} + \underset{\text{sodium nitrate}}{NaNO3}}\]
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संबंधित प्रश्न
Complete the following statement.
In the type of reaction called_______________, two compounds exchange their positive and negative radicals.
Explain, giving one example of the following chemical change:
Thermal dissociation
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(b) What kind of chemical reaction is synthesis? Support your answer by an example.
State the type of reactions for the following represent and balance the ones that are not balanced.
2HgO → 2Hg + O2
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A coloured substance which decomposes violently leaving a coloured residue and evolving two neutral gases one of which is unreactive or inert in nature.
State which of the substance given below evolve oxygen gas on thermal decomposition.
Ammonium dichromate
The reaction can be classified as:
State which of the following type, take place in the reaction is given below.
\[\ce{Cl2 + 2Kl->2KCl + l2}\]
Define the following type of chemical change or reaction with a suitable example.
Displacement reaction or substitution reaction
Give a balanced equation for a direct combination reaction involving:
Two compounds – resulting in the formation of a weak acid
Complete the statement by filling in the blank with the correct word:
The neutral gas evolved when lead nitrate undergoes thermal decomposition is _________.
