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प्रश्न
Hydrogen burns with a ______ flame and ______ sound is heard.
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उत्तर
Hydrogen burns with a pale blue flame and pop sound is heard.
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संबंधित प्रश्न
Give an example of an oxidation reaction.
Define the following in terms of gain or loss of hydrogen with one example:
Oxidation
Define an oxidation reaction.
Define reduction.
Compare hydrogen and halogens on the basis of:
reaction with oxygen
Complete and balance the following equation:
Zn +_________________→ZnCl2 + H2
Identify the type of chemical reaction given below:
\[\ce{2Mg + O2 -> 2MgO}\]
When hydrogen gas is passed over black copper oxide, a reddish-coloured layer of copper is formed.
Answer the questions that follow based on this reaction.
- Write the equation.
- What type of reaction is it?
- Complete the blanks:
In this reaction, an oxygen atom goes away from CuO (copper oxide), which means that ______ of copper oxide takes place, whereas a hydrogen molecule takes up an oxygen atom and water (H2O) is formed, meaning ______ of hydrogen takes place.
State whether the given chemical reaction is a redox reaction or not. Justify your answer.
\[\ce{MnO_2 + 4HCl->MnCl_2 +2H_2O + Cl_2}\]
The oxidizing agent in the equation \[\ce{S + 2H2SO4 -> 3SO2 + 2H2O}\] is ______.
