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प्रश्न
State which of the substance given below evolve oxygen gas on thermal decomposition.
Mercury [II] oxide
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उत्तर
Mercury [II] oxide HgO
On thermal decomposition, Mercury [II] oxide is evolved oxygen
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संबंधित प्रश्न
Explain, giving one example for each of the following chemical changes:
Displacement
State the type of reactions for the following represent and balance the ones that are not balanced.
CaCO3→ CaO+ CO2
What is a double displacement reaction?
Give an example of double displacement reaction, where a gas is evolved.
Decomposition reactions can occur by electricity
Give balanced reactions.
On heating which of the following substances i.e. copper carbonate, zinc carbonate, washing soda, copper sulphate, zinc nitrate, copper nitrate, lead nitrate, ammonium chloride and ammonium dichromate – relate to the reaction given below.
A coloured substance which decomposes violently leaving a coloured residue and evolving two neutral gases one of which is unreactive or inert in nature.
The reaction can be classified as:
State which of the following type, take place in the reaction is given below.
\[\ce{4HNO3->4NO2 + 2H2O + O2}\]
Give a balanced equation for a direct combination reaction involving:
Two elements – one of which is a neutral gas and the other a yellow non-metal
Give a balanced equation for thermal decomposition of mercury [II] oxide
Complete the statement by filling in the blank with the correct word:
Direct combination reaction of sulphur dioxide with water gives ________.
