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प्रश्न
Tick (√ ) the most appropriate answer.
Galvanising is the process of coating iron with a layer of molten :
पर्याय
zinc
tin
copper
silver
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उत्तर
zinc
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संबंधित प्रश्न
Write fully balanced equation for the following :
MgO + H2O →
Write the balanced chemical equation of the manganese dioxide.
Describe simple experiments to show the presence of -
oxygen and nitrogen component in air using a bell jar
Describe simple experiments to show the presence of -
carbon dioxide in air using a test tube with outlets containing lime water.
Describe simple experiments to show the presence of -
water vapour in air using a glass tumbler and ice.
Identify the acidic oxides responsible for acid rain. State how their presence results in formation of acid rain. Give a reason why acid rain damages heritage buildings.
Give the main experimental points only to demonstrate that candle-gains weight on burning.
What is meant by burning?
A process without emitting flame is called as ______.
Match the following
| 1. | Burning of meteors | a. | Exosphere |
| 2. | Weather change | b. | Stratosphere |
| 3. | Lowest temperature | c. | Mesosphere |
| 4. | Ozone layer | d. | Troposphere |
