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प्रश्न
Choose the current answer from the options given below :
When conc. H2SO4 comes in contact with sugar, it becomes black due to
पर्याय
Hydrolysis
Decolourisation
Dehydration
Hydration
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उत्तर
When conc. H2SO4 comes in contact with sugar, it becomes black due to Dehydration.
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संबंधित प्रश्न
Give a chemical test to distinguish between dilute sulphuric acid and dilute hydrochloric acid.
What would you observe in the following case?
Hot concentrated sulphuric acid is added to sodium chloride crystals.
Give reason for the following:
When concentrated sulphuric acid is exposed to air, its volume increases and it becomes slightly dilute.
Give reason for the following:
Concentrated sulphuric acid is kept in airtight bottles.
Name the catalyst used in the process.
What would you see, when a crystal of CuSO4.5H2O is placed in concentrated sulphuric acid? Give reason to explain your observation.
Write the equation for the laboratory preparation of the following salts, using sulphuric acid.
Copper sulphate from copper.
Give one equation to show the following property of sulphuric acid:
As a non-volatile acid
Write balanced chemical equation to show :
The oxidizing action of conc.sulphuric acid on carbon
Identify the gas evolved and give the chemical test in the following case:
Dilute hydrochloric acid reacts with sodium sulphite.
