Question
Dip a chalk in ink. What do you observe?
✓
Answer
When a chalk is dipped in ink, it is observed that the ink molecules are adsorbed at the surface of chalk and the surface becomes coloured, while the solvent of the ink goes deeper into the chalk due to absorption.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Draw labelled diagram of Rutherford’s α-particle scattering experiment.
Derive the following expression: $M =\frac{ mRT }{ PV }$
→How is chemistry traditionally classified?
Classify the following oxides into acidic, basic or amphoteric. $B_2O_3, Ga_2O_3, Tl_2O_3, In_2O_3, Al_2O_3$
→State whether the following alkenes can exhibit geometrical (or cis-trans) isomerism or not. Give reason for the answer.
i. $CH _3- CH _2- CH _2- CH = CH _2$
ii. $CH _3- CH _2- CH = C \left( CH _3\right)_2$
→i. $CH _3- CH _2- CH _2- CH = CH _2$
ii. $CH _3- CH _2- CH = C \left( CH _3\right)_2$
Explain the preparation of ammonia from nitrogeneous organic matter.
Draw labelled diagrams of the following : Bredig’s arc method
$i.$ State whether the given reaction is an example of heterogeneous or homogeneous catalysis.
$ii.$ What is the role of $Fe, K_2O$ and $Al_2O_3$ in this reaction?
Point out the difference between 12 g of carbon and 12 u of carbon.
State the law of multiple proportions.