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प्रश्न
Name affects the acidified K2Cr2O7 paper and also turns lime water dirty milky.
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उत्तर
Sulphur dioxide (SO2)
संबंधित प्रश्न
Complete and balance the following chemical equations:
Fe `"SO"_4` + NaOH `→`
(aq.) (aq.)
FILL IN THE BLANK
In a double decomposition precipitation reaction both the reactants must be ............ soluble.
TRUE \ FALSE
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Explain by writing a word equation.
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Explain by writing a word equation.
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Write the chemical reaction where the following changes are observed.
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Select the correct answer from the options given below:
State the gaseous product formed, when
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Match the following:
| Column I | Column II | ||
| 1. | Burning of coal | a. | Rusting |
| 2. | Painting of a surface | b. | Evaporation |
| 3. | Dipping iron in the water | c. | Chemical change |
| 4. | Salt from seawater | d. | Prevention of rusting |
Define the following term:
Chemical change
