Alcohols, Phenols, and Ethers — Chemistry STD 12 Science — Question

Draw figure to show the splitting of d orbitals in an octahedral crystal field. orbitals in an octahedral crystal field.

Discuss the physical properties of aldehydes and ketones in term of their boiling point.

Answer the following.

1. What type of linkage is responsible for the primary structure of proteins?
2. Name the location where protein synthesis occurs in our body.

An organic compound 'A' (molecular formula C₃H₆O) is resistant to oxidation but forms a compound 'B' (
C₃H₈O) on reduction. 'B' reacts with HBr to form a bromide'C' which on treatment with alcoholic KOH forms an alkene 'D' (C₃H₆). Deduce the structures of A, B, C and D.

1. Arrange the following compounds in increasing order of their property as indicated:

CH₃CHO, C₆H₅CHO, HCHO
(reactivity towards nucleophilic addition reaction)

2. 2,4-dinitrobenzoic acid, 4-methoxybenzoic acid, 4-nitrobenzoic acid

(acidic character)

Depict the galvanic cell in which the reaction: Zn(s) + 2Ag⁺(aq) → Zn²⁺(aq) + 2Ag(s) takes place.
Further indicate what are the carriers of the current inside and outside the cell. State the reaction at each electrode.

Compare the stability of +2 oxidation state for the elements of the first transition series.

The vapour pressure of water is 12.3 kPa at 300 K. Calculate vapour pressure of 1 molal solution of a non-volatile solute in it.

Out of C₆H₅CH₂Cl and C₆H₅CHClC₆H₅, which is more easily hydrolysed by aqueous KOH?

Predict which of the following will be coloured in aqueous solution? Ti³⁺, V3⁺, Cu⁺, Sc³⁺, Mn²⁺, Fe³⁺ and CO²⁺. Give reasons for each.