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प्रश्न
______ is not a chemical change.
विकल्प
Dissolution of ammonia in water
Dissolution of carbon-di-oxide in water
Dissolution of oxygen in water
Melting of polar ice caps
उत्तर
Melting of polar ice-caps is not a chemical change.
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संबंधित प्रश्न
FILL IN THE BLANK
........... electrolytes dissociate completely in aqueous state and allow large amount of electricity to flow through it.
Define electrolysis.
Choose the correct option from the bracket and explain the statement giving a reason.
(Oxidation, displacement, electrolysis, reduction, zinc, copper, double displacement, decomposition)
Addition of an aqueous solution of ZnSO4 to an aqueous solution of BaCl2 is an example of ______ reaction.
State the conditions necessary for a chemical change or reaction.
State the type of reactions for the following represent and balance the ones that are not balanced.
Cl2 + 2KBr → 2KCl + Br2
Multiple choice:
Which of the following is not a characteristic of a chemical change?
Give a word equation for the following reaction.
An exothermic reaction where both the reactants are gases, one of which is oxygen.
The water we drink is a combination of hydrogen and oxygen.
Write a note on the following:
Fermentation
Both CO2 and H2 gases are ______.
