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प्रश्न
Complete and balance the following equation:
\[\ce{K + H2O -> }\]________+ ________
उत्तर
\[\ce{2K + 2H2O →\underline{2\text{KOH}} + \underline{\ce{H2}}}\]
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संबंधित प्रश्न
Give one example of an oxidation-reduction reaction which is also a displacement reaction.
Define oxidation in terms of gain or loss of hydrogen with one example.
MULTIPLE CHOICE QUESTIONS
The process of adding oxygen to a substance is called
- oxidation.
- reduction.
- displacement.
- hydrogenation.
How would you change a metal like Cu into its ions?
Divide the above equation into oxidation and reduction half-reactions.
With reference to oxidation & reduction reaction – complete the statement given by filling in the blanks with only the words (a) Addition (b) Removal.
‘Oxidation is a chemical reaction involving ____ of oxygen to a substance or ____ of hydrogen from a substance. Reduction on the otherhand involves ____ of hydrogen to a substance or ____ of oxygen from a substance.
Explain the term oxidation in term of addition and removal of oxygen/hydrogen with a suitable example.
When the positive charge on an ion increases or the negative charge on them decreases it is called as _______.
Balance the given chemical reaction as per the instructions below.
\[\ce{NaOH + H2SO4 -> Na2SO4 + H2O}\]
Oxidation means losing electrons then what is reduction?
On adding a drop of barium chloride solution to an aqueous solution of sodium sulphite, white precipitate is obtained :
- Write a balanced chemical equation for the reaction involved.
- What other name can be given to this precipitation reaction?
- On adding dilute hydrochloric acid to the reaction mixture, white precipitate disappears. Why?
