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प्रश्न
What happens when moist blue litmus paper is placed in a jar containing carbon dioxide?
उत्तर
Blue litmus paper turns red.
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संबंधित प्रश्न
Name the following:
Mixture of carbon monoxide and hydrogen.
Draw a labelled diagram for the preparation of CO2 in the laboratory.
Write the balanced chemical equation for the preparation of carbon dioxide by:
heating calcium carbonate.
What happens when a lit splinter is introduced into a jar containing carbon dioxide ?
Fill in the blank:
A mixture of 95% oxygen and 5% carbon dioxide is called .................
Complete the reactions and balance them.
CuO + CO →
Complete the reaction and balance them.
Fe2O2 + CO →
In the laboratory preparation of carbon dioxide by action of a dilute acid on a metallic carbonate give a balanced equation for the preparation.
In the laboratory preparation of carbon dioxide by action of a dilute acid on a metallic carbonate give a reason for:
(i) use of a washer bottle containing cone. H2SO4 in the preparation
(ii) Not collecting the prepared gas over water
(iii) Not using dilute sulphuric acid as a reactant in the preparation.
State the function of cone, sulphuric acid in the laboratory preparation of carbon monoxide from oxalic acid.
