AP EAPCET 2025 - 23rd May Morning Shift | Practical Organic Chemistry Question 2 | Chemistry

' $x$ ' mg of an organic compound was analysed by Kjeldahl method. The ammonia evolved was absorbed in 50 mL of $0.5 \mathrm{M} \mathrm{H}_2 \mathrm{SO}_4$. The unused acid required 60 mL of 0.5 M NaOH solution for complete neutralisation. If the percentage of nitrogen in the compound is 56 , the value of $x$ is

500

250

750

375

AP EAPCET 2025 - 22nd May Evening Shift

MCQ (Single Correct Answer)

-0

Which method is used to purify liquids having very high boiling points and liquids which decompose at or below their boiling point?

Distillation

Fractional distillation

Distillation under reduced pressure

Steam distillation

AP EAPCET 2024 - 20th May Evening Shift

MCQ (Single Correct Answer)

-0

A mixture of substances $A, B, C, D$ is subjected to column chromatography. The degree of adsorption is the order of $D>B>C>A$. The column is eluted with suitable solvent. Identify the correct statement with respect to separation of mixture

D comes out first from the column

A comes out first from the column

C comes out after $B$ from the column

$B$ comes out after $D$ from the column

AP EAPCET 2021 - 19th August Morning Shift

MCQ (Single Correct Answer)

-0

In Lassaigne’s test for halogens, it is necessary to remove X and Y from the sodium fusion extract, if nitrogen and sulphur are present. This is done by boiling the extract with Z. Identify X, Y and Z.

$$X=\mathrm{NaNO}_3, \quad Y=\mathrm{Na}_2 \mathrm{SO}_4, \quad Z= \mathrm{conc}. \mathrm{HNO}_3$$

$$X=\mathrm{NaNH}_2, \quad Y=\mathrm{NaSH}, \quad Z= \mathrm{conc}. \mathrm{HCl}$$

$$X=\mathrm{Na}_2 \mathrm{NO}_2, Y=\mathrm{NaSO}_3 \mathrm{H}, \quad Z= \mathrm{conc}. \mathrm{H}_2 \mathrm{SO}_4$$

$$X=\mathrm{NaCN}, \quad Y=\mathrm{Na}_2 \mathrm{~S}, \quad Z= \mathrm{conc}. \mathrm{HNO}_3$$

AP EAPCET Subjects

Browse all chapters by subject