CBSE Class 11 Chemistry Chapter 1 Some Basic Concepts of Chemistry Multiple Choice Questions with Answers. MCQ Questions Class 11 Chemistry Some Basic Concepts of Chemistry with Answers was Prepared Based on Latest Exam Pattern. Students can solve NCERT Class 11 Chemistry Some Basic Concepts of Chemistry MCQs with Answers to know their preparation level.
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MCQ Questions Class 11 Chemistry Some Basic Concepts of Chemistry with Answers - Set - 5
Question 1:
5.0 g of a certain element X forms 10.0 g of its oxide having the formula X4O6. The atomic mass of X is
(a) 12.0 amu
(b) 24.0 amu
(c) 30.0 amu
(d) 32.0 amu
Correct Answer – (B)
Question 2 :
4 g of a hydrated crystal of formula A.xH2O has 0.8 g of water. If the molar mass of the anhydrous crystal (A) is 144 g mol–1, The value of x is
(a) 4
(b) 1
(c) 2
(d) 3
Correct Answer – (C)
Question 3 :
Calculate the normality of 10 volume H2O2 ?
(a) 1.7 N
(b) 12 N
(c) 30.3 N
(d) 0.0303 N
Correct Answer – (A)
Question 4 :
Arrange the following in the order of increasing mass (atomic mass: O = 16, Cu = 63, N = 14)
I. one atom of oxygen
II. one atom of nitrogen
III. 1 × 10–10 mole of oxygen
IV. 1 × 10–10 mole of copper
(a) II < I < III < IV
(b) I < II < III < IV
(c) III < II < IV < I
(d) IV < II < III < I
Correct Answer – (A)
Question 5 :
Which has the maximum number of molecules among the following ?
(a) 44 g CO2
(b) 48 g O3
(c) 8 g H2
(d) 64 g SO2
Correct Answer – (C)
MCQ Questions Class 11 Chemistry Some Basic Concepts of Chemistry with Answers
Question 6 :
A solution of 20.2 g of 1,2-dibromopropane in MeOH upon heating with excess Zn produces 3.58 g of an unsaturated compound X. The yield (%) of X is closest to [Atomic weight of r is 80]
(a) 18
(b) 85
(c) 89
(d) 30
Correct Answer – (B)
Question 7 :
Volume of water needed to mix with 10 mL 10N HNO3 to get 0.1 N HNO3 is :
(a) 1000 mL
(b) 990 mL
(c) 1010 mL
(d) 10 mL
Correct Answer – (B)
Question 8 :
An aqueous solution of 6.3 g of oxalic acid dihydrate is made up to 250 ml. The volume of 0.1 N NaOH required to completely neutralise 10 ml of this solution is
(a) 20 ml
(b) 40 ml
(c) 10 ml
(d) 4 ml
Correct Answer – (B)
Question 9 :
Sulphur forms the chlorides S2Cl2 and SCl2. The equivalent mass of sulphur in SCl2 is
(a) 8 g/mol
(b) 16 g/mol
(c) 64.8 g/mol
(d) 32 g/mol
Correct Answer – (B)
Question 10 :
The vapour density of a mixture containing NO2 and N2O4 is 27.6. Mole fraction of NO2 in the mixture is
(a) 0.8
(b) 0.6
(c) 0.4
(d) 0.2
Correct Answer – (A)
- NCERT Solutions Class 11 Chemistry Chapter 1 : Some Basic Concepts of Chemistry
- NCERT Solutions Class 11 Chemistry Chapter 2 : Structure Of The Atom
- NCERT Solutions Class 11 Chemistry Chapter 3 : Classification of Elements and Periodicity in Properties
- NCERT Solutions Class 11 Chemistry Chapter 4 : Chemical Bonding and Molecular Structure
- NCERT Solutions Class 11 Chemistry Chapter 5 : States of Matter
- NCERT Solutions Class 11 Chemistry Chapter 6 : Thermodynamics
- NCERT Solutions Class 11 Chemistry Chapter 7 : Equilibrium
- NCERT Solutions Class 11 Chemistry Chapter 8 : Redox Reactions
- NCERT Solutions Class 11 Chemistry Chapter 9 : Hydrogen
- NCERT Solutions Class 11 Chemistry Chapter 10 : The s-Block Elements
- NCERT Solutions Class 11 Chemistry Chapter 11 : The p-Block Elements
- NCERT Solutions Class 11 Chemistry Chapter 12 : Organic Chemistry: Some Basic Principles and Techniques
- NCERT Solutions Class 11 Chemistry Chapter 13 : Hydrocarbons
- NCERT Solutions Class 11 Chemistry Chapter 14 : Environmental Chemistry
