11-NCERT Chemistry Most Important Questions

Q1. Chemistry that deals with the study of the origin, transport, reactions, effects and facts of chemical species in the environment is known as: 1) Forensic chemistry 2) Archaeological Chemistry 3) Environment chemistry 4) Pisiculture Solution Chemistry that deals with the study of the origin, transport, reactions, effects and facts of chemical species in the environment is known as Environment Chemistry. Q2. Oxidation of ethene in the presence of ionic catalyst in aqueous medium produces: 1) Hydrogen peroxide 2) Methanal 3) Ethanal 4) Ethyne Solution Oxidation of ethene in presence of ion

Q1. Give the structure of A and B: Solution           Q2. Why alkanes are also known as paraffin? Solution Alkanes are relatively unreactive under ordinary conditions and so they are also known as paraffins. Q3. Is it possible to isolate pure staggered ethane or pure eclipsed ethane at room temperature? Solution It is not possible to isolate pure staggered form of ethane or pure eclipsed form of ethane at room temperature because of less difference in their energy they can get converted into each other very fast. Q4. Why does ethyne show acidity? Solution Q5. Why is Wurtz reaction not preferred for the preparation of alkanes containing odd number of carbon atoms? Illustrate your answer by taking one example. Solution For  preparing alkanes containing odd number of carbon atoms, a mixture of two alkyl halides has to be used. These two alkyl halides may react in three different ways producing a mixture of three alkanes instead of desired al