Advertisements
Online Mock Tests
Chapters
2: Quantum Mechanical Model of Atom
3: Periodic Classification Of Elements
4: Hydrogen
5: Alkali and Alkaline Earth Metals
6: Gaseous State
7: Thermodynamics
8: Physical and Chemical Equilibrium
9: Solutions
10: Chemical bonding
11: Fundamentals of Organic Chemistry
12: Basic concept of organic reactions
13: Hydrocarbons
14: Haloalkanes and Haloarenes
15: Environmental Chemistry
![Samacheer Kalvi solutions for Chemistry - Volume 1 and 2 [English] Class 11 TN Board chapter 1 - Basic Concepts of Chemistry and Chemical Calculations - Shaalaa.com](/images/chemistry-volume-1-and-2-english-class-11-tn-board_6:5f2b1b2038084cf381bfa42c826a928c.jpg "Samacheer Kalvi solutions for Chemistry - Volume 1 and 2 [English] Class 11 TN Board chapter 1 - Basic Concepts of Chemistry and Chemical Calculations")
Advertisements
Solutions for Chapter 1: Basic Concepts of Chemistry and Chemical Calculations
Below listed, you can find solutions for Chapter 1 of Tamil Nadu Board of Secondary Education Samacheer Kalvi for Chemistry - Volume 1 and 2 [English] Class 11 TN Board.
Samacheer Kalvi solutions for Chemistry - Volume 1 and 2 [English] Class 11 TN Board 1 Basic Concepts of Chemistry and Chemical Calculations Evaluation [Pages 29 - 35]
Choose the best answer
40 ml of methane is completely burnt using 80 ml of oxygen at room temperature The volume of gas left after cooling to room temperature is
40 ml CO2 gas
40 ml CO2 gas and 80 ml H2O gas
60 ml CO2 gas and 60 ml H2O gas
120 ml CO2 gas
An element X has the following isotopic composition 200X = 90%, 199X = 8% and 202X = 2%. The weighted average atomic mass of the element X is closest to
201 u
202 u
199 u
200 u
Assertion: Two mole of glucose contains 12.044 × 1023 molecules of glucose
Reason: Total number of entities present in one mole of any substance is equal to 6.02 × 1022
both assertion and reason are true and the reason is the correct explanation of assertion
both assertion and reason are true but reason is not the correct explanation of assertion
assertion is true but reason is false
both assertion and reason are false
Carbon forms two oxides, namely carbon monoxide and carbon dioxide. The equivalent mass of which element remains constant?
Carbon
oxygen
both carbon and oxygen
neither carbon nor oxygen
The equivalent mass of a trivalent metal element is 9 g eq-1 the molar mass of its anhydrous oxide is
102 g
27 g
270 g
78 g
The number of water molecules in a drop of water weighing 0.018 g is
6.022 × 1026
6.022 × 1023
6.022 × 1020
9.9 × 1022
1 g of an impure sample of magnesium carbonate (containing no thermally decomposable impurities) on complete thermal decomposition gave 0.44 g of carbon dioxide gas. The percentage of impurity in the sample is
0%
4.4%
16%
8.4%
When 6.3 g of sodium bicarbonate is added to 30 g of acetic acid solution, the residual solution is found to weigh 33 g. The number of moles of carbon dioxide released in the reaction is
3
0.75
0.075
0.3
When 22.4 litres of H2 (g) is mixed with 11.2 litres of Cl2 (g), each at 273 K at 1 atm the moles of HCl (g), formed is equal to
2 moles of HCl (g)
0.5 moles of HCl (g)
1.5 moles of HCl (g)
1 mole of HCl (g)
Hot concentrated sulphuric acid is a moderately strong oxidising agent. Which of the following reactions does not show oxidising behaviour?
\[\ce{Cu + 2H2SO4 -> CuSO4 + SO2 + 2HO2}\]
\[\ce{C + 2H2SO4 -> CO2 + 2SO2 + 2H2O}\]
\[\ce{BaCl2 + H2SO4 -> BaSO4 + 2HCl}\]
none of the above
Choose the disproportionation reaction among the following redox reactions.
\[\ce{3Mg_{(s)} + N2_{(g)} -> Mg3N2_{(s)}}\]
\[\ce{P4_{(s)} + 3NaOH + 3H2O -> PH3_{(g)} + 3NaH2PO2_{(aq)}}\]
\[\ce{Cl2_{(g)} + 2Kl_{(aq)} -> 2KCl_{(aq)} + I2}\]
\[\ce{Cr2O3_{(s)} + 2Al_{(s)} -> Al2O3_{(s)} + 2Cr_{(s)}}\]
The equivalent mass of potassium permanganate in alkaline medium is \[\ce{MnO^-_4 + 2H2O + 3e^- -> MnO2 + 4OH^-}\]
31.6
52.7
79
None of these
Which one of the following represents 180 g of water?
5 Moles of water
90 moles of water
`(6.022 xx 10^23)/180` molecules of water
6.022 × 1024 molecules of water
7.5 g of a gas occupies a volume of 5.6 litres at 0° C and 1 atm pressure. The gas is
NO
N2O
CO
CO2
Total number of electrons present in 1.7 g of ammonia is
6.022 × 1023
`(6.022 xx 10^22)/1.7`
`(6.022 xx 10^24)/1.7`
`(6.022 xx 10^23)/1.7`
The correct increasing order of the oxidation state of sulphur in the anions \[\ce{SO^2-_4, SO^2-_3, S2O^2-_4, S2O^2-_6}\] is
\[\ce{SO^2-_3 < SO^2-_4 < S2O^2-_4 < S2O^2-_6}\]
\[\ce{SO^2-_4 < S2O^2-_4 < S2O^2-_6 < SO^2-_3}\]
\[\ce{S2O^2-_4 < SO^2-_3 < S2O^2-_6 < SO^2-_4}\]
\[\ce{S2O^2-_6 < S2O^2-_4 < SO^2-_4 < SO^2-_3}\]
The equivalent mass of ferrous oxalate is
`"molar mass of ferrous oxalate"/1`
`"molar mass of ferrous oxalate"/2`
`"molar mass of ferrous oxalate"/3`
none of these
If the Avogadro number were changed from 6.022 × 1023 to 6.022 × 1020, this would change
the ratio of chemical species to each other in a balanced equation
the ratio of elements to each other in a compound
the ratio of elements to each other in a compound
the mass of one mole of carbon
Two 22.4 litre containers A and B contains 8 g of O2 and 8 g of SO2 respectively at 273 K and 1 atm pressure, then
Number of molecules in A and B are same
Number of molecules in B is more than that in A.
The ratio between the number of molecules in A to number of molecules in B is 2 : 1
Number of molecules in B is three times greater than the number of molecules in A.
What is the mass of precipitate formed when 50 ml of 8.5% solution of AgNO3 is mixed with 100 ml of 1.865% potassium chloride solution?
3.59 g
7 g
14 g
28 g
The mass of a gas that occupies a volume of 612.5 ml at room temperature and pressure (25° C and 1 atm pressure) is 1.1 g. The molar mass of the gas is
66.25 g mol-1
44 g mol-1
24.5 g mol-1
662.5 g mol-1
Which of the following contains the same number of carbon atoms as in 6 g of carbon-12.
7.5 g ethane
8 g methane
both 7.5 g ethane and 8 g methane
none of these
Which of the following compound(s) has/have a percentage of carbon same as that in ethylene (C2H4).
propene
ethyne
benzene
ethane
Which of the following is/are true with respect to carbon-12.
relative atomic mass is 12 u
oxidation number of carbon is +4 in all its compounds.
1 mole of carbon-12 contain 6.022 × 1022 carbon atoms.
all of these
Which one of the following is used as a standard for atomic mass.
6C12
7C12
6C13
6C14
Write brief answer to the following questions
Define relative atomic mass.
What do you understand by the term mole.
Define equivalent mass.
What do you understand by the term oxidation number?
Distinguish between oxidation and reduction.
Calculate the molar mass of the following compound.
Urea [CO(NH2)2]
Calculate the molar mass of the following compound.
Acetone [CH3COCH3]
Calculate the molar mass of the following compound.
Boric acid [H3BO3]
Calculate the molar mass of the following compound.
Sulphuric acid [H2SO4]
The density of carbon dioxide is equal to 1.965 kgm–3 at 273 K and 1 atm pressure. Calculate the molar mass of CO2.
Which contains the greatest number of moles of oxygen atoms
- 1 mol of ethanol
- 1 mol of formic acid
- 1 mol of H2O
Calculate the average atomic mass of naturally occurring magnesium using the following data.
| Isotope | Isotopic atomic mass | Abundance (%) |
| Mg24 | 23.99 | 78.99 |
| Mg25 | 24.99 | 10.00 |
| Mg26 | 25.98 | 11.01 |
In a reaction \[\ce{x + y + z2 -> xyz2}\] identify the Limiting reagent if any, in the following reaction mixture.
200 atoms of x + 200 atoms of y + 50 molecules of z2
In a reaction \[\ce{x + y + z2 -> xyz2}\] identify the Limiting reagent if any, in the following reaction mixture.
1 mol of x + 1 mol of y + 3 mol of z2
In a reaction \[\ce{x + y + z2 -> xyz2}\] identify the Limiting reagent if any, in the following reaction mixture.
50 atoms of x + 25 atoms of y + 50 molecules of z2
In a reaction \[\ce{x + y + z2 -> xyz2}\] identify the Limiting reagent if any, in the following reaction mixture.
2.5 mol of x + 5 mol of y + 5 mol of z2
Mass of one atom of an element is 6.645 × 10−23 g. How many moles of element are there in 0.320 kg.
What is the empirical formula of the following?
Fructose (C6H12O6) found in honey.
What is the empirical formula of the following?
Caffeine (C8H10N4O2) a substance found in tea and coffee.
The reaction between aluminium and ferric oxide can generate temperatures up to 3273 K and is used in welding metals.
(Atomic mass of Al = 27 u Atomic mass of O = 16 u)
\[\ce{2Al + Fe2O3 -> Al2O3 + 2Fe}\]; If, in this process, 324 g of aluminium is allowed to react with 1.12 kg of ferric oxide.
- Calculate the mass of Al2O3 formed.
- How much of the excess reagent is left at the end of the reaction?
How many moles of ethane is required to produce 44 g of \[\ce{CO2_{(g)}}\] after combustion.
Hydrogen peroxide is an oxidising agent. It oxidises ferrous ion to ferric ion and reduced itself to water. Write a balanced equation.
Calculate the empirical and molecular formula of a compound containing 76.6% carbon, 6.38% hydrogen and rest oxygen its vapour density is 47.
A Compound on analysis gave Na = 14.31% S = 9.97% H = 6.22% and O = 69.5% calculate the molecular formula of the compound if all the hydrogen in the compound is present in combination with oxygen as water of crystallization. (molecular mass of the compound is 322).
Balance the following equation by the oxidation number method.
\[\ce{K2Cr2O7 + Kl + H2SO4 -> K2SO4 + Cr2(SO4)3 + I2 + H2O}\]
Balance the following equation by the oxidation number method.
\[\ce{KMnO4 + Na2SO3 -> MnO2 + Na2SO4 + KOH}\]
Balance the following equation by the oxidation number method.
\[\ce{Cu + HNO3 -> Cu(NO3)2 + NO2 + H2O}\]
Balance the following equation by the oxidation number method.
\[\ce{KMnO4 + H2C2O4 + H2SO4 -> K2SO4 + MnSO4 + CO2 + H2O}\]
Balance the following equation by the ion electron method.
\[\ce{KMnO4 + SnCl2 + HCl -> MnCl2 + SnCl4 + H2O + KCl}\]
Balance the following equation by the ion electron method.
\[\ce{C2O^2-_4 + Cr2O^2-_7 -> Cr^3+ + CO2}\] (in acid medium)
Balance the following equation by the ion electron method.
\[\ce{Na2S2O3 + I2 -> Na2S4O6 + NaI}\]
Balance the following equation by the ion electron method.
\[\ce{Zn + NO^-_3 ->Zn^2+ + NO}\] (in acid medium)
Solutions for 1: Basic Concepts of Chemistry and Chemical Calculations
Samacheer Kalvi solutions for Chemistry - Volume 1 and 2 [English] Class 11 TN Board chapter 1 - Basic Concepts of Chemistry and Chemical Calculations
Shaalaa.com has the Tamil Nadu Board of Secondary Education Mathematics Chemistry - Volume 1 and 2 [English] Class 11 TN Board Tamil Nadu Board of Secondary Education solutions in a manner that help students grasp basic concepts better and faster. The detailed, step-by-step solutions will help you understand the concepts better and clarify any confusion. Samacheer Kalvi solutions for Mathematics Chemistry - Volume 1 and 2 [English] Class 11 TN Board Tamil Nadu Board of Secondary Education 1 (Basic Concepts of Chemistry and Chemical Calculations) include all questions with answers and detailed explanations. This will clear students' doubts about questions and improve their application skills while preparing for board exams.
Further, we at Shaalaa.com provide such solutions so students can prepare for written exams. Samacheer Kalvi textbook solutions can be a core help for self-study and provide excellent self-help guidance for students.
Concepts covered in Chemistry - Volume 1 and 2 [English] Class 11 TN Board chapter 1 Basic Concepts of Chemistry and Chemical Calculations are Redox Reactions, Chemistry - the Centre of Life, Classification of Matter, Atomic and Molecular Masses, Gram Equivalent Concept, Empirical Formula and Molecular Formula, Stoichiometry, Mole Concept.
Using Samacheer Kalvi Chemistry - Volume 1 and 2 [English] Class 11 TN Board solutions Basic Concepts of Chemistry and Chemical Calculations exercise by students is an easy way to prepare for the exams, as they involve solutions arranged chapter-wise and also page-wise. The questions involved in Samacheer Kalvi Solutions are essential questions that can be asked in the final exam. Maximum Tamil Nadu Board of Secondary Education Chemistry - Volume 1 and 2 [English] Class 11 TN Board students prefer Samacheer Kalvi Textbook Solutions to score more in exams.
Get the free view of Chapter 1, Basic Concepts of Chemistry and Chemical Calculations Chemistry - Volume 1 and 2 [English] Class 11 TN Board additional questions for Mathematics Chemistry - Volume 1 and 2 [English] Class 11 TN Board Tamil Nadu Board of Secondary Education, and you can use Shaalaa.com to keep it handy for your exam preparation.
