Some Basic Concepts of Chemistry MCQ Questions for Class 11 Chemistry Chapter 1 with Answers

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MCQ Questions for Class 11 Chemistry with Answers


Q1. The S.I unit of temperature is :

(A) Kelvin
(B) Celsius
(C) Fahrenheit
(D) Centigrade

(A) Kelvin


Q2. The total number of atoms represented by the compound CuSO4. 5H2O is

(A) 27
(B) 21
(C) 5
(D) 8

(B) 21


Q3. A chemical formula based on actual number of molecule is called __ formula:

(A) Structural
(B) Molecular
(C) Empirical
(D) None

(B) Molecular


Q4. How much of NaOH is required to neutralise 1500 cm³ of 0.1 NHCl?

(A) 40 g
(B) 4 g
(C) 6 g
(D) 60 g

(C) 6 g


Q5. The number of significant figures for the three numbers 161 cm, 0.161 cm, 0.0161 cm are

(A) 3,3 and 3 respectively
(B) 3,4 and 4 respectively
(C) 3,4 and 5 respectively
(D) 3,3 and 4 respectively

(A) 3,3 and 3 respectively


Q6. The number of moles present in 6 gms of carbon is:

(A) 2
(B) 0.5
(C) 5
(D) 1

(B) 0.5


Q7. The significant figures in 3400 are

(A) 2
(B) 5
(C) 6
(D) 4

(B) 5


Q8. Difference in density is the basis of

(A) gravity separation
(B) molecular sieving
(C) ultrafiltration
(D) molecular attraction

(A) gravity separation


Q9. 7.5 grams of a gas occupy 5.6 litres of volume at STP. The gas is

(A) NO
(B) N2O
(C) CO
(D) CO2

(A) NO


Q10. An atom is 10 times heavier than 1/12th of mass of a carbon atom (C – 12). The mass of the atom in a.m.u. is

(A) 10
(B) 120
(C) 1.2
(D) 12

(A) 10


Q11. Any charged particle is called:

(A) Atom
(B) Molecule
(C) Ion
(D) Mixture

(C) Ion


Q12. The percentage of nitrogen in urea is about

(A) 46
(B) 85
(C) 18
(D) 28

(A) 46


Q13. Which of the following is not a SI unit?

(A) litre
(B) candela
(C) metre
(D) mole

(A) litre


Q14. The -ve charged particles is called:

(A) Anion
(B) Cation
(C) Radical
(D) Atom

(A) Anion


Q15. Which of the following substances cannot be separated in

(A) Solid glucose
(B) Salt and sugar
(C) Sugar and water solution
(D) None of these

(A) Solid glucose


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MCQ Questions for Class 11 Chemistry Chapter wise with Answers


Lesson 1. Some Basic Concepts of Chemistry Class 11 MCQ Questions
Lesson 2. Structure of Atom Class 11 MCQ Questions
Lesson 3. Classification of Elements and Periodicity in Properties Class 11 MCQ Questions
Lesson 4. Chemical Bonding and Molecular Structure Class 11 MCQ Questions
Lesson 5. States of Matter Class 11 MCQ Questions
Lesson 6. Thermodynamics Class 11 MCQ Questions
Lesson 7. Equilibrium Class 11 MCQ Questions
Lesson 8. Redox Reactions Class 11 MCQ Questions
Lesson 9. Hydrogen Class 11 MCQ Questions
Lesson 10. The s-Block Elements Class 11 MCQ Questions
Lesson 11. The p-Block Elements Class 11 MCQ Questions
Lesson 12. Organic Chemistry: Some Basic Principles and Techniques Class 11 MCQ Questions
Lesson 13. Hydrocarbons Class 11 MCQ Questions
Lesson 14. Environmental Chemistry Class 11 MCQ Questions

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