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Practical Organic Chemistry formulas

Master Practical Organic Chemistry through 12 JEE Advanced-level formulas, systematically structured with every variable spelled out. Revise concept-wise, identify the areas where you need improvement, and focus your preparation with greater precision.

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Practical Organic Chemistry, every formula

12 formulas, typeset and free. Print it, or keep it open beside your practice.

Lassaigne's test
$detects N, S, halogens (sodium fusion)$
Q1MCQLassaigne
Lassaigne's test detects the elements:
- A
  N, S and halogens
- B
  C and H only
- C
  O only
- D
  metals
Nitrogen detection
$Prussian blue with FeSO_{4}$
Q1MCQNitrogen
Nitrogen in an organic compound gives which colour in Lassaigne's test?
- A
  Prussian blue
- B
  black
- C
  violet
- D
  green
Sulphur detection
$black PbS or violet coloration$
Q1MCQSulphur
Sulphur gives which precipitate with lead acetate?
- A
  black
- B
  white
- C
  blue
- D
  yellow
Halogen detection
$silver halide precipitate$
Q1MCQHalogen
Halogens are detected as a precipitate of:
- A
  silver halide
- B
  barium sulphate
- C
  lead sulphide
- D
  iron oxide
Duma's method (N)
$measures N_{2} gas$
Q1MCQDuma
Duma's method estimates nitrogen by measuring:
- A
  $N_2$ gas volume
- B
  $NH_3$
- C
  $CO_2$
- D
  water
Kjeldahl's method (N)
$estimation of nitrogen as NH_{3}$
Q1MCQKjeldahl
Kjeldahl's method estimates nitrogen by converting it to:
- A
  ammonia
- B
  $N_2$
- C
  nitrate
- D
  $NO_2$
% nitrogen (Kjeldahl)
$% N = \frac{1.4 \times N \times V}{w}$
Q1MCQ% N Kjeldahl
The formula for percentage nitrogen (Kjeldahl) uses the factor:
- A
  $1.4$
- B
  $14$
- C
  $100$
- D
  $0.14$
Carius method (halogen)
$estimation as AgX$
Q1MCQCarius
The Carius method estimates halogens as:
- A
  silver halide
- B
  barium sulphate
- C
  $N_2$
- D
  $CO_2$
Detection of -COOH
$effervescence with NaHCO_{3}$
Q1MCQCOOH
A carboxylic acid is detected by effervescence with:
- A
  $NaHCO_3$
- B
  $NaOH$
- C
  water
- D
  $KMnO_4$
Detection of -OH
$ester test / reaction with Na$
Q1MCQOH
An alcohol reacts with sodium metal to release:
- A
  hydrogen gas
- B
  $CO_2$
- C
  $O_2$
- D
  $N_2$
Unsaturation test
$decolourises bromine water / Baeyer’s reagent$
Q1MCQUnsaturation
Unsaturation is indicated by decolourisation of:
- A
  bromine water
- B
  $NaHCO_3$
- C
  $AgNO_3$
- D
  $FeCl_3$
Solubility classification
$group functional class by solvent behaviour$
Q1MCQSolubility
Solubility behaviour helps to classify a compound's:
- A
  functional group
- B
  molar mass
- C
  colour
- D
  density

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Practical Organic Chemistry formulas

Practical Organic Chemistry, every formula

Lassaigne's test

Nitrogen detection

Sulphur detection

Halogen detection

Duma's method (N)

Kjeldahl's method (N)

% nitrogen (Kjeldahl)

Carius method (halogen)

Detection of -COOH

Detection of -OH

Unsaturation test

Solubility classification

More JEE Advanced Chemistry formula sheets

Other ways to revise this chapter

Preparing students for India’s top institutes

Join QuestPix, Today!