Q1ChemistryUnit 13: Purification and Characterisation of Organic Compounds
Semiconductor materials like and
are usually purified by:
Chemistry · JEE
Purification: Crystallization, sublimation, distillation, differential extraction and chromatography principles and their applications Mock Test for JEE
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Syllabus context
Part of Purification and Characterisation of Organic Compounds in JEE Main Chemistry.
- Purification: Crystallization, sublimation, distillation, differential extraction and chromatography principles and their applications
- Qualitative analysis: Detection of nitrogen, sulphur, phosphorus and halogens
- Quantitative analysis (basic principles only): Estimation of carbon, hydrogen, nitrogen, halogens, sulphur and phosphorus
- Calculations of empirical formulae and molecular formulae, numerical problems in organic quantitative analysis
Free sample questions
Attempt 15 free MCQs for Purification: Crystallization, sublimation, distillation, differential extraction and chromatography principles and their applications. Unlock 10+ more with Pro.
Q2ChemistryUnit 13: Purification and Characterisation of Organic Compounds
Which of the following is/are true statement(s)?
This question has multiple correct options
Q3ChemistryUnit 13: Purification and Characterisation of Organic Compounds
The process of burning wood in limited supply of oxygen to obtain charcoal as a resultant product is called:
Q4ChemistryUnit 13: Purification and Characterisation of Organic Compounds
Which of the following compounds can be purified by vacuum distillaiton? This question has multiple correct options
Q5ChemistryUnit 13: Purification and Characterisation of Organic Compounds
Liquid ethanol can be separated from a mixture of ethanol and water by:
Q6ChemistryUnit 13: Purification and Characterisation of Organic Compounds
Ores contain a large amount of impurities, which is called as:
Q7ChemistryUnit 13: Purification and Characterisation of Organic Compounds
Treatment of waste water involves
physical, chemical, and biological processes, which remove
matter that contaminates
waste water.
Q8ChemistryUnit 13: Purification and Characterisation of Organic Compounds
The method of zone refining of metals is
based on the principal of:
Q9ChemistryUnit 13: Purification and Characterisation of Organic Compounds
The correct order in the processing of
wool is:
Q10ChemistryUnit 13: Purification and Characterisation of Organic Compounds
The fragrance of the flower is due to the presence of some steam volatile
organic compounds called essential oils. These are generally insoluble in water at room temperature but are miscible with water vapour in the vapour phase. A suitable method for the extraction of these oil from the flower is:
Q11ChemistryUnit 13: Purification and Characterisation of Organic Compounds
Assertion
At high temperatures the sodium sulphate or potasium sulphate formed, forms a crust and sticks to the glass
apparatus.
Reason
The non volatile residue of the metal
sulphate remains in the vessel. The
dissolved nitrogen oxides are removed at reduced pressure to give fuming nitric acid.
Q12ChemistryUnit 13: Purification and Characterisation of Organic Compounds
Which of the following types of water is not in its free state?
Q13ChemistryUnit 13: Purification and Characterisation of Organic Compounds
Name the metal that is purified by placing the impure metal on sloping hearth of a reverberatory furnace and heating that above its melting point in the absence of air.
Q14ChemistryUnit 13: Purification and Characterisation of Organic Compounds
Colloids are purified by:
Q15ChemistryUnit 13: Purification and Characterisation of Organic Compounds
Refining of aluminium is done by
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