Binayak Bhaiya

Environmental Chemistry NCERT Exercises Question 1.Define environmental chemistry. Solution.The environment around us is made up of chemical species which undergo chemical reactions constantly e.g., photosynthesis in plants, formation of ozone in stratosphere, etc. Environmental chemistry deals with the study of such reactions which take place in the origin, transport and life-cycle of chemical species in […]

Hydrocarbons NCERT Exercises Question 1.How do you account for the formation of ethane during chlorination of methane? Solution.This is how ethane is generated during the chlorination of methane. Question 2.Write IUPAC names of the following compounds: Solution. Question 3.For the following compounds, write structural formulae and IUPAC names of all possible isomers having the number

Organic Chemistry: Some Basic Principles and Techniques NCERT Exercises Question 1.What are hybridization states of each carbon atom in the following compounds? Solution. Question 2.Indicate the σ and π bonds in the following molecules: Solution. Question 3.Write bond line formulas for: Isopropyl alcohol, 2,3-Dimethylbutanal, Heptan-4-one. Solution. Question 4.Give the IUPAC names following compounds: Solution. Question

The p-Block Elements NCERT Exercises Question 1.Discuss the pattern of variation in oxidation states of(i) B to TI and(ii) C to Pb. Solution.The aspect common in the variation of oxidation state within group 13 (B to Tl) and group 14 (C to Pb) is that of inert pair effect. As we move down the group (13 or

The s-Block Elements NCERT Exercises Question 1.What are the common physical and chemical features of alkali metals ? Solution.General characteristics of alkali metals : The blue colour of the solution is due to ammoniated electron. Question 2.Discuss the general characteristics and gradation in properties of alkaline earth metals. Solution. Question 3.Why are alkali metals not

Hydrogen NCERT Exercises Question 1.Justify the position of hydrogen in the periodic table on the basis of its electronic configuration. Solution.Hydrogen has electronic configuration 1s1. Its electronic configuration is similar to the outer electronic configuration (ns1) of alkali metals, which belong to the first group of the periodic table. Question 2.Write the names of isotopes

Redox Reactions NCERT Exercises Question 1.Assign oxidation number to the underlined elements in each of the following species :(a) NaH2PO4(b) NaHSO4(c) H4P2O7(d) K2MnO4(e) CaO2(f) NaBH4(g) H2S2O7(h) KAI(SO4)2.12H2O Solution.Let the oxidation no. of underlined element in all the given compounds = x Question 2.What are the oxidation number of the underlined elements in each of the following and how do you rationalise your results?(a) KI3(b) H2S4O6(c) Fe3O4(d) CH3CH2OH(e) CH3COOH

Equilibrium NCERT Exercises Question 1.A liquid is in equilibrium with its vapor in a sealed container at a fixed temperature. Thevolume of the container is suddenly increased.(a) What is the initial effect of the change on vapor pressure?(b) How do rates of evaporation and condensation change initially?(c) What happens when equilibrium is restored finally and what will be

Thermodynamics NCERT Exercises Question 1.Choose the correct answer. A thermodynamic state function is a quantity(a) used to determine heat changes(b) whose value is independent of path(c) used to determine pressure volume work(d) whose value depends on temperature only. Solution.(b): State function is a property of the system whose value depends only upon the state of the system and is independent

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? Solution.According to Boyle’s law, at constant temperature, Question 2.A vessel of 120 mL capacity contains a certain amount of gas of 35°C and 1.2 bar pressure. The gas is transferred to another