Chapter 14: Environmental Chemistry
NCERT Class 11 Chemistry Texbook Chapter 14 Solved Questions Question 1. Define environmental chemistry?Answer: Environmental Chemistry is the branch of science which deals with the chemical changes in the environment. It includes our surroundings such as air, water,…
Chapter 13: Hydrocarbons
Question 1. How do you account for the formation of ethane during chlorination of methane?Answer: Chlorination of methane is a free radical reaction which occurs by the following mechanism:From the above mechanism, it is evident that during propagation…
Chapter 12: Organic Chemistry Some Basic Principles and Techniques
Question 1. What are hybridisation states of each carbon atom in the following compounds? CH2=C=O, CH3CH=CH2, (CH3)2CO, CH2=CHCN, C6H6.Answer: Question 2. Indicate the a- and n-bonds in the following molecules:C6H6 , C6H12, CH2Cl2, CH=C=CH2, CH3NO2, HCONHCH3Answer: Question 3. Write…
Chapter 11: The p-Block Elements
NCERT Class 11 Chemistry Textbook Solved Questions Question 1. Discuss the pattern of variation in the oxidation states of(i) B to Tl (ii) C to Pb.Answer: (i) B to TlCommon oxidation states are +1 and +3. The stability…
Chapter 10: The s-Block Elements
NCERT Class 11 Chemistry Textbook Solved Questions Question 1. What are the common physical and chemical features of alkali metals?Answer: Physical properties of alkali metals: Chemical properties of alkali metals: Question 2. Discuss the general characteristics and gradation…
Chapter 9: Hydrogen
Question 1. Justify the position of hydrogen in the periodic table on the basis of its electronic configuration.Answer: Hydrogen has been placed at the top of the alkali metal in group, but it is not a member of…
Chapter 8: Redox Reaction
Question 1. Assign oxidation number to the underlined elements in each of the following species:Answer: Question 2. What are the oxidation number of the underlined elements in each of the following and how do you rationalise your…
Chapter 7: Equilibrium
1. A liquid is in equilibrium with its vapour in a sealed container at a fixed temperature. The volume of the container suddenly increased. Ans: The vapour pressure would first fall if the container’s volume was rapidly…
Chapter 6: Thermodynamics
1. Choose the Correct Answer. a Thermodynamic State Function Is a Quantity (i) used to determine heat changes (ii) whose value is independent of path (iii) used to determine pressure volume work (iv) Whose value depends on…
Chapter 5: States of Matter
Question 1. What will be the minimum pressure required to compress 500 dm3 of air at 1 bar to 200 dm3 at 30°C?Answer: P1 = 1 bar,P2 = ? V1= 500 dm3 ,V2=200 dm3As temperature remains constant at 30°C,P1V1=P2V21 bar…
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