Aldehydes, Ketones, and Carboxylic Acids — Chemistry STD 12 Science — Question

Explain (% V/V) Volume Percentage with examples.

Calculate the osmotic pressure in pascals exerted by a solution prepared by dissolving 1.0 g of polymer of molar mass 185,000 in 450 mL of water at 37°C.

Explain construction and uses of conductivity cell.

Why are vitamin A and vitamin C essential to us? Give their important sources.

Give the structure of chromate and dichromate ions, and explain interconvertible property of these ions.

Name the four bases present in DNA. Which one of these is not present in RNA?

When fresh grapes are kept in concentrated salt solution they shrink, whereas when they are kept back in water they swell up. Why?

State the factors that determine the basicity of alkyl amine compounds in aqueous medium and explain the order of basicity of alkyl amine compounds based on these factors.

Name the members of the lanthanoid series which exhibit +4 oxidation states and those which exhibit +2 oxidation states. Try to correlate this type of behaviour with the electronic configurations of these elements.

Explain trends in M²⁺/M standard electrode potentials.