Chemistry

The pair, in which ions are isoelectronic with Al³⁺ is:

A compound 'X' is a weak acid and it exhibits colour change at pH close to the equivalence point during neutralization of NaOH with CH₃COOH. Compound 'X' exists in ionized form in basic medium. The compound 'X' is

When ethanol is heated with conc. H₂SO₄, a gas is produced. The compound formed, when this gas is treated with cold dilute aqueous solution of Baeyer's reagent, is

Given below are two statements.

In the light of the above statement, choose the most appropriate answer from the options given below.

Compound 'A' undergoes following sequence of reactions to give compound 'B'. The correct structure and chirality of compound 'B' is

[where Et is -C₂H₅]

Correct structure of $\gamma -methylcyclohexane$ carbaldehyde is

Octahedral complexes of copper  (II) undergo structural distortion (Jahn- Teller). Which one of the given copper (II) complexes will show the maximum structural distortion? (en-ethylenediamine; H₂N-CH₂-CH₂-NH₂)

Which of the following 3d- metal ion will give the lowest enthalpy of hydration $\left({\Delta }_{hyd}H\right)$  when dissolved in water?

The neutralization occurs when 10 mL of 0.1 M acid 'A' is allowed to react with 30 mL of 0.05 M base M base M(OH)₂. The basicity of the acid 'A' is___________.

[M is a metal]

When borax is heated with CoO on a platinum loop, blue coloured bead formed is largely due to