NCERT Solutions for Class 11 chemistry covers all the questions given in the NCERT book. You can study and download these question and their solutions free from this page. These solutions are solved by our specialists at SaralStudy.com, that will assist all the students of respective boards, including CBSE, who follows NCERT; with tackling all the questions easily. We give chapter wise complete solutions for your straightforwardness.
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Chapter 1 Some Basic Concepts of Chemistry
At Saral Study, we are providing you with the solution of Class 11th Chemistry, Some Basic Concepts of Chemistry according to the latest NCERT (CBSE) book guidelines prepared by expert teachers. Here we are trying to give you a detailed answer to the questions of the entire topic of this chapter so that you can get more marks in your examinations by preparing the answers based on this lesson.
From this chapter, you will understand the role of chemistry in different spheres of life. You will also understand characteristics of three states of matter. You can also classify substances into elements,compounds and mixtures. You can explain various laws of chemical combination along with description of mole and molar mass.You will also be able to determine empirical formula and molecular formula for a compound from the given experimental data.
- Chapter 2 Structure of Atom
- Chapter 3 Classification of Elements and Periodicity in Properties
- Chapter 4 Chemical Bonding and Molecular Structure
- Chapter 5 States of Matter
- Chapter 6 Thermodynamics
- Chapter 7 Equilibrium
- Chapter 8 Redox Reactions
- Chapter 9 Hydrogen
- Chapter 10 The s Block Elements
- Chapter 11 The p Block Elements
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Chapter 12 Organic Chemistry Some Basic Principles and Techniques
Organic chemistry is the branch of chemistry that deals with the study of hydrocarbons and their derivatives. This unit consists of the shapes of carbon compounds, their structure and functional group nomenclature etc. The nature of the covalent bonding in organic compounds are described in terms of orbital hybridization concept. The three dimensional structure organic, molecules can be represented on taper by using wedge and dash formula the name of organic compound is carried all by rules that are given by IUPAC (International Union of Pure and Applied Chemistry). Compounds possessing the same molecular formula but different properties are known as Isomers and different types of isomers are explained in this unit. Organic reactions involve breaking and making covalent bonds and covalent bonds may be cleaved by heterolytic or homolytic. Substitution, addition, rearrangement and elimination reaction are the classification of organic reactions.
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Chapter 13 Hydrocarbons
Hydrocarbon cells explain that compounds of carbon and hydrogen only. They are used for the manufacture of polymers like polyethylene, polytropon, polystyrene etc. Fuels contain a mixture of hydrocarbons which are sources of energy. Hydrocarbons are classified on the basis of carbon-carbon bonds present and they are categorised into three types (i) Saturated (alkane) (ii) Unsaturated (alkane) (iii) Aromatic. Alkanes contain carbon-carbon sigma bonds and the important reactions of alkanes are free radical substitution, combustion, oxidation and aromatization. Alkene are unsaturated hydrocarbons containing atleast one double bond. Alkenes are manufactured or prepared from alkynes, from vicinal dihalides from alcohol by acidic dehydration alkene and alkynes undergo addition reactions, which are electrophilic addition. Aromatic hydrocarbon known as ‘arenes' and most compounds found to contain benzene rings. Alkane shows conformational isomerism due to free rotation where alkene exhibits geometrical isomerism due to restricted rotation. Polynuclear hydrocarbons having fused benzene systems have carcinogenic properties. The nature of groups or substituents attached to the benzene ring is responsible for activation or deactivation of the benzene ring toward further electrophilic substitution and also orientation of the incoming group.
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Chapter 14 Environmental Chemistry
The branch which deals with the relationship between living organisms and environment is called environmental chemistry. Due to certain undesired activities our environment is getting spoiled and the time is not so far when earth will not be able to sustain life. Atmospheric pollution is generally studied as tropospheric and stratospheric pollution whereas the troposphere is the lowest region of the atmosphere extending from earth's surface to the lower boundary of the stratosphere. It contains vapours and is greatly affected by air pollution. Stratosphere is the layer of the earth's atmosphere above the troposphere and below the mesosphere is called stratosphere. Tropospheric pollution is basically due to various oxides of sulphur, nitrogen, carbon, halogen and also due to particulate pollutants. The phenomenon in which atmosphere of earth traps - the heat coming from the sun and prevents it from escaping into outer space is called greenhouse effect and greenhouse gases warm the earth leading to the warming of air due to greenhouse gases which is called global warming.
Popular Questions of Class 11 Chemistry
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Calculate the amount of carbon dioxide that could be produced when
(i) 1 mole of carbon is burnt in air.
(ii) 1 mole of carbon is burnt in 16 g of dioxygen.
(iii) 2 moles of carbon are burnt in 16 g of dioxygen.
- Q:-
The mass of an electron is 9.1 × 10–31 kg. If its K.E. is 3.0 × 10–25 J, calculate its wavelength.
- Q:-
Calculate the wavelength of an electron moving with a velocity of 2.05 × 107 ms–1.
- Q:-
Determine the empirical formula of an oxide of iron which has 69.9% iron and 30.1% dioxygen by mass.
- Q:-
In a reaction A + B2 → AB2 Identify the limiting reagent, if any, in the following reaction mixtures.
(i) 300 atoms of A + 200 molecules of B
(ii) 2 mol A + 3 mol B
(iii) 100 atoms of A + 100 molecules of B
(iv) 5 mol A + 2.5 mol B
(v) 2.5 mol A + 5 mol B
- Q:-
Calcium carbonate reacts with aqueous HCl to give CaCl2 and CO2 according to the reaction,
CaCO3(s) + 2 HCl(aq) → CaCl2(aq) + CO2(g) + H2O(l)
What mass of CaCO3 is required to react completely with 25 mL of 0.75 M HCl?
- Q:-
A sample of drinking water was found to be severely contaminated with chloroform, CHCl3, supposed to be carcinogenic in nature. The level of contamination was 15 ppm (by mass).
(i) Express this in percent by mass.
(ii) Determine the molality of chloroform in the water sample.
- Q:-
Balance the following redox reactions by ion – electron method :
(a) MnO4 – (aq) + I – (aq) → MnO2 (s) + I2(s) (in basic medium)
(b) MnO4 – (aq) + SO2 (g) → Mn2+ (aq) + HSO4– (aq) (in acidic solution)
(c) H2O2 (aq) + Fe 2+ (aq) → Fe3+ (aq) + H2O (l) (in acidic solution)
(d) Cr2O7 2– + SO2(g) → Cr3+ (aq) + SO42– (aq) (in acidic solution)
- Q:-
Calculate the mass of sodium acetate (CH3COONa) required to make 500 mL of 0.375 molar aqueous solution. Molar mass of sodium acetate is 82.0245 g mol–1
- Q:-
Write the general outer electronic configuration of s-, p-, d- and f- block elements.
Recently Viewed Questions of Class 11 Chemistry
- Q:-
What will be the minimum pressure required to compress 500 dm3 of air at 1 bar to 200 dm3 at 30°C?
- Q:-
At a certain temperature and total pressure of 105 Pa, iodine vapour contains 40% by volume of I atoms
I2(g) ↔ 2l (g)
Calculate Kp for the equilibrium.
- Q:-
What is Kc for the following equilibrium when the equilibrium concentration of each substance is: [SO2]= 0.60 M, [O2] = 0.82 M and [SO3] = 1.90 M ?
2SO2(g) + O2(g) ↔ 2SO3(g)
- Q:-
Among NH3, H2O and HF, which would you expect to have highest magnitude of hydrogen bonding and why?
- Q:-
Write Lewis dot symbols for atoms of the following elements: Mg, Na, B, O, N, Br.
- Q:-
Calculate the mass percent of different elements present in sodium sulphate (Na2SO4).
- Q:-
Calculate the wave number for the longest wavelength transition in the Balmer series of atomic hydrogen.
- Q:-
Dihydrogen gas is obtained from natural gas by partial oxidation with steam as per following endothermic reaction:
CH4 (g) + H2O (g) ↔ CO (g) + 3H2 (g)
(a) Write as expression for Kp for the above reaction.
(b) How will the values of Kp and composition of equilibrium mixture be affected by
(i) increasing the pressure
(ii) increasing the temperature
(iii) using a catalyst ?
- Q:-
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) KAl(SO4)2.12 H2O
- Q:-
Calculate the volume occupied by 8.8 g of CO2 at 31.1°C and 1 bar pressure.
R = 0.083 bar L K–1 mol–1.