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प्रश्न
Saloni took a piece of burning charcoal and collected the gas evolved in a test tube.
(a) How will she find the nature of the gas?
(b) Write down word equations of all the reactions taking place in this process.
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उत्तर
(a) Add a few drops of water in the test tube containing gas. Now, cover the test tube and shake it well. After shaking, test the solution with blue litmus and red litmus. It will turn blue litmus red. Thus, the gas is acidic in nature.
(b) Charcoal reacts with oxygen to form carbon dioxide gas.
Carbon dioxide reacts with water to form carbonic acid, which turns blue litmus paper red.
संबंधित प्रश्न
Explain how, a reduction reaction of aluminium can be used for welding cracked machine parts of iron. Write a chemical equation for the reaction involved.
State two important uses of following metal:
Uses of gold
State two important uses of following metal.
Uses of copper
Take an element from an alkali metal and one from an alkaline earth metal and write an equation for their action with:
Oxygen
Write name.
Molecular formula of the common ore of aluminium.
With reference to the following metals state their use in daily life metal:
Zinc
Give a reason why iron objects rust easily but the iron pillar at Qutab Minar has not rusted over the years.
Complete the following flow chart.
Generally, metals are solid in nature. Which one of the following metals is found in a liquid state at room temperature?
X [2, 8, 7] and Y [2, 8, 2] are two elements. Using this information, complete the following:
______ is the reducing agent.
