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प्रश्न
State your observation for the following case :
Dry red rose petals are placed in the jar of sulphur dioxide.
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उत्तर
Dry SO2 has no effect on dry red rose petals.
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संबंधित प्रश्न
Name the products formed when hot and concentrated sulphuric acid reacts with Sugar.
Give reason for the following:
Sulphuric acid can form two kinds of salts with sodium chloride.
How will you distinguish between dilute H2SO4 and conc. H2SO4 ?
Choose the current answer from the options given below :
When conc. H2SO4 comes in contact with sugar, it becomes black due to
Choose the current answer from the options given below :
The catalyst used for the oxidation of SO2 to SO3 in contact process is
A, B, C and D summarize the properties of sulphuric acid depending on whether it is dilute or concentrated. Choose the property (A, B, C or D), depending on which is relevant to each of the preparations (i) to (ii).
A. Dilute acid (typical acid properties)
B. Non-volatile acid
C. Oxidizing agent
D. Dehydrating agent
(i) Preparation of hydrogen chloride.
(ii) Preparation of ethane from ethanol
(iii) Preparation of copper sulphate from copper oxide.
State your observation for the following case:
Paper soaked in potassium permanganate solution is introduced into a gas jar of sulphur dioxide.
Write balanced chemical equation to show :
The dehydrating property of conc.sulphuric acid
Identify the gas evolved and give the chemical test in the following case:
Dilute hydrochloric acid reacts with sodium sulphite.
Rewrite the following statement by adding the correct word, as shown in the example:
|
Example: Given Statement: Ammonia changes moist red litmus to blue. Correct Statement: Aqueous ammonia changes moist red litmus to blue. |
Sulphuric acid acts as a dehydrating agent.
