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प्रश्न
State one observation for each of the following :
A small piece of zinc is added to dilute hydrochloric acid
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उत्तर
Bubbles of H2 gas observed.
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संबंधित प्रश्न
When a piece of limestone reacts with dilute HCl, a gas X is produced. When gas X is passed through lime water then a white precipitate Y is formed. On passing excess of gas X, the white precipitate dissolves forming a soluble compound Z.
- What are X, Y and Z?
- Write equations for the reactions which take place:
- When limestone reacts with dilute HCl.
- When gas X reacts with lime water to form white precipitate Y.
- When excess of gas X dissolves white precipitate Y to form a soluble compound Z.
The acid produced naturally in our stomach is ______.
The salt which will give a neutral solution on dissolving in water will be ______.
Name the acid present in vinegar.
HCl, HNO3, C2H5OH, C6H12O6 all contain H atoms but only HCl and HNO3 show acidic character. Why?
Paheli observed that most of the fish in the pond of her village were gradually dying. She also observed that the waste of a factory in their village is flowing into the pond which probably caused the fish to die.
- Explain why the fish were dying.
- If the factory waste is acidic in nature, how can it be neutralised?
Curd contains ______ acid.
Why does blue color copper sulphate become white on heating?
To Interpret:
CH4 and NH3, are not acids.
Name the acid present in grapes.
