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 - 4
Question 1:
In a hydrocarbon, mass ratio of hydrogen and carbon is 1:3, the empirical formula of hydrocarbon is
(a) CH4
(b) CH2
(c) C2H
(d) CH3
Correct Answer – (A)
Question 2 :
The weight of one molecule of a compound of molecular formula C60H122 is
(a) 1.2 × 10–20 g
(b) 5.025 × 1023 g
(c) 1.4 × 10–21 g
(d) 6.023 × 10–20 g
Correct Answer – (C)
Question 3 :
Which of the following pairs of solutions are expected to be isotonic, temperature being the same?
(a) 0.1 M glucose and 0.1M C6H5N+H3Cl–
(b) 0.1 M NaCl and 0.05 M BaCl2
(c) 0.1 M Na2SO4 and 0.1 M KNO3
(d) 0.1 M BaCl2 and 0.075 M FeCl3
Correct Answer – (D)
Question 4 :
The reaction of calcium with water is represented by the equation Ca + 2H2O → Ca(OH)2 + H2 What volume of H2 at STP would be liberated when 8 gm of calcium completely eacts with water?
(a) 0.2 cm3
(b) 0.4 cm3
(c) 2240 cm3
(d) 4480 cm3
Correct Answer – (D)
Question 5 :
0.4 moles of HCl and 0.2 moles of CaCl2 were dissolved in water to have 500 mL of solution, the molarity of Cl– ion is:
(a) 0.8 M
(b) 1.6 M
(c) 1.2 M
(d) 10.0 M
Correct Answer – (B)
MCQ Questions Class 11 Chemistry Some Basic Concepts of Chemistry with Answers
Question 6 :
During electrolysis of water the volume of O2 liberated is 2.24 dm3. The volume of hydrogen liberated, under same conditions will be
(a) 2.24 dm3
(b) 1.12 dm3
(c) 4.48 dm3
(d) 0.56 dm3
Correct Answer – (C)
Question 7 :
For preparing 0.1 N solution of a compound from its impure sample of which the percentage purity is known, the weight of the substance required will be
(a) less than the theoretical weight
(b) more than the theoretical weight
(c) same as the theoretical weight
(d) none of these
Correct Answer – (B)
Question 8 :
A solution is prepared by dissolving 24.5 g of sodium hydroxide in distilled water to give 1 L solution. The molarity of NaOH in the solution is
(a) 0.2450 M
(b) 0.6125 M
(c) 0.9800 M
(d) 1.6326 M
(Given that molar mass of NaOH = 40.0 g mol–1)
Correct Answer – (B)
Question 9 :
Question. The normality of orthophosphoric acid having purity of 70 % by weight and specific gravity 1.54 is :
(a) 11 N
(b) 22 N
(c) 33 N
(d) 44 N
Correct Answer – (C)
Question 10 :
The empirical formula of a compound is CH2O. Its molecular weight is 180. The molecular formula of compound is :
(a) C4HO4
(b) C3H6O6
(c) C6H12O6
(d) C5H10O5
Correct Answer – (C)
- 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
