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प्रश्न
Anaerobic bacteria digest animal waste and produce biogas (Change – A). The biogas is then burnt as fuel (Change – B). The following statements pertain to these changes. Choose the correct one.
पर्याय
Process – A is a chemical change.
Process – B is a chemical change.
Both processes A and B are chemical changes.
None of these processes is a chemical change.
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उत्तर
Both processes A and B are chemical changes.
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संबंधित प्रश्न
Write true or false :
No new substance is formed during a chemical reaction.
Explain the following reaction with one suitable example of Decomposition reaction
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.
Give reason for the following:
Silver nitrate solution is kept in coloured bottles.
Explain,giving one example of the following chemical changes:
Reversible reaction
Name: Two nitrates that do not produce nitrogen dioxide on heating.
What do you observe when HCI is passed through a silver nitrate solution.
Write your observation and a balanced equation in the case of the following substances being heated.
Ammonium chloride
Explain the Silver nitrate solution is kept in coloured reagent bottles in the laboratory.
______ is a natural indicator.
