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प्रश्न
Write balanced equation to satisfy the following statement:
\[\ce{Acid + Carbonate or bicarbonate -> Salt + water + Carbon dioxide}\]
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उत्तर १
\[\ce{CaCO3 +2HCl → CaCl2 +H2O + CO2}\]
उत्तर २
\[\ce{\underset{(dil)}{H2SO4}+CuCO3 -> CuSO4 + H2O + CO2}\]
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संबंधित प्रश्न
A solution turns red litmus blue. Its pH is likely to be ______.
Name one animal whose stings contain formic acid (or methanoic acid).
Name the acid-base indicator extracted from lichen.
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- 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.
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Write the equation for the reaction that will take place when this first step is carried out.
Match the chemical substances given in Column (A) with their appropriate application given in Column (B)
| Column (A) |
Column (B) |
| (A) Bleaching powder | (i) Preparation of glass |
| (B) Baking soda | (ii) Production of H2 and Cl2 |
| (C) Washing Soda | (iii) Decolourisation |
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Fill in the cross word given in figure with the help of the clues provided.
Across
(2) The solution which does not change the colour of either red or blue litmus.
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(7) Colour of blue litmus in lemon juice.
Down
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(3) It is a natural indicator and gives pink colour in basic solution.
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(6) It is responsible for the increase in temperature during a neutralisation reaction.
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