A. Add 5 ml of chloro benzene
B. Add 0.1gm of anhydrous aluminium chloride
C. Red to deep violet colour appears
D. Warm & filter
E. Extracted residue
Choose the correct answer from the options given below:
DDT Color Test Steps Explained
The color test for DDT involves a specific sequence of reactions and observations. The correct order of steps is crucial for accurate results.
Procedure Steps:
- E: Extracted residue - Start with the residue obtained from the extraction process.
- A: Add 5 ml of chloro benzene - Dissolve the residue in 5 ml of chloro benzene. This acts as a solvent.
- D: Warm & filter - Gently warm the mixture and then filter it to remove any insoluble impurities.
- B: Add 0.1 gm of anhydrous aluminium chloride - Add approximately 0.1 gm of anhydrous aluminium chloride ($AlCl_3$) to the filtered solution. This acts as a catalyst.
- C: Red to deep violet colour appears - Observe the color change. The appearance of a red to deep violet color indicates a positive test for DDT.
The sequence E, A, D, B, C ensures the correct reaction conditions for the colorimetric detection of DDT.
Important Questions from Analytical Chemistry
Select the correct statement from the following options.
XRD peaks are produced by ________ of a monochromatic beams of X-rays scattered at a specific angles from each set of lattice planes in a sample.
Which is true for SC-2 clean procedure for initial cleaning of wafer IC fabrication?
X-ray diffraction utilises electrons of energy range _______.
Ninhydrin is used as detecting agent for amino acid in chromatography because ___________.
