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Identify the incorrect statements regarding primary standard of titrimetric analysis.
(A) It should be purely available in dry form.
(B) It should not undergo chemical change in air.
(C) It should be hygroscopic and should react with another chemical instantaneously and stoichiometrically.
(D) It should be readily soluble in water.
(E) $$\mathrm{KMnO}_4$$ & $$\mathrm{NaOH}$$ can be used as primary standard.
Choose the correct answer from the options given below :
Match List I with List II
| LIST I (Test) |
LIST II (Identification) |
||
|---|---|---|---|
| A. | Bayer's test | I. | Phenol |
| B. | Ceric ammonium nitrate test | II. | Aldehyde |
| C. | Phthalein dye test | III. | Alcoholic-OH group |
| D. | Schiff's test | IV. | Unsaturation |
Choose the correct answer from the options given below :
The correct statement among the following, for a "chromatography" purification method is :
Which of the following statements are correct?
A. Glycerol is purified by vacuum distillation because it decomposes at its normal boiling point.
B. Aniline can be purified by steam distillation as aniline is miscible in water.
C. Ethanol can be separated from ethanol water mixture by azeotropic distillation because it forms azeotrope.
D. An organic compound is pure, if mixed M.P. is remained same.
Choose the most appropriate answer from the options given below :
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