Chemistry Test ...

When H₂S gas is passed in acidic medium which set of cations get precipitated?

On heating compound X a gas Y is obtained, which is also manufactured by reaction of Ba(NO₃)₂ + Zn + KOH(aq.).

Calculate % volume occupied by atoms in CsCl type structure assuming ideal crystal having anion-anion contact.

The ΔH° for the mutarotation of glucose in aqueous solution,

α – D – glucose (aq) → β – D – glucose (aq)

has been measured in a microcalorimeter and found to be –1.16 kJ.mol^–1. The enthalpies of solution of the two forms of glucose have been determined to be 

α – D – glucose (s) → α – D – glucose (aq)

                                   ΔH° = 10.72 kJ mol^–1

β – D – glucose (s) → β – D – glucose (aq)

                                   ΔH° = 4.68 kJ.mol^–1

Calculate ΔH° (in kJ/mol) for the mutarotation of solid α – D – glucose to solid β - D – glucose.

Racemic mixture of 3-hydroxy-3-methyl cyclohexanone is obtained as a product in reaction -

How many of the following will give white ppt of silver salt when treated with ammonical AgNO₃ solution?

(a) CH₃–CH₂–C≡CH    (b) CH₃–C≡C–CH₃

Select INCORRECT statement regarding KMnO₄ & K₂Cr₂O₇.

Select CORRECT option regarding formation of molecular orbital from the combination of 1s-1s orbitals.

For a d⁶ metal ion in an octahedral field, the correct electronic configuration is :-