Advertisements
Advertisements
प्रश्न
State your observations when Concentrated Sulphuric acid is added to Sugar Crystals
उत्तर
When sugar reacts with conc. H2SO4, it gives a black spongy mass of carbon which is called sugar charcoal.
APPEARS IN
संबंधित प्रश्न
The acid which is used in the preparation of a volatile acid
State the inference drawn from the following observations:
Salt S is prepared by reacting dilute sulphuric acid with copper oxide. Identify S.
Give reason for the following:
When concentrated sulphuric acid is added to blue crystalline copper sulphate, it turns powdery white.
Describe the reaction that show
Concentrated sulphuric acid is a dehydrating agent.
The following statement is correct only under certain conditions. Rewrite the statement including the appropriate conditions.
Oxalic acid reacts with sulphuric acid to produce carbon monoxide and carbon dioxide.
Complete the following sentence, choosing the correct word from the given options.
"Concentrated sulphuric acid is used in the laboratory preparation of nitric acid and hydrochloric acid because it is ____________ in comparison to these two acids."
Give balanced chemical equation for the action of sulphuric acid of the following:
Potassium hydrogen carbonate
Write the balanced chemical equation for the following conversion:
Lead sulphate from lead nitrate solution and dilute sulphuric acid.
Write the balanced chemical equation for the following conversion:
Copper sulphate from copper and concentrated sulphuric acid.
Write the balanced chemical equation for the following conversion:
Ammonium sulphate from ammonia and dilute sulphuric acid.
