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

Some Basic Concepts of Chemistry Class 11 Chemistry MCQs Questions with Answers

Check the below NCERT MCQ Questions for Class 11 Chemistry Chapter 1 Some Basic Concepts of Chemistry with Answers Pdf free download. MCQ Questions for Class 11 Chemistry with Answers were prepared based on the latest exam pattern. We have Provided Some Basic Concepts of Chemistry Class 11 Chemistry MCQs Questions with Answers to help students understand the concept very well.

Class 11 Chemistry Chapter 1 Quiz

Class 11 Chemistry Chapter 1 MCQ Online Test

You can refer to NCERT Solutions for Class 11 Chemistry Chapter 1 Some Basic Concepts of Chemistry to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams.

Some Basic Concepts of Chemistry Class 11 Chemistry MCQ online test

Q1.	Formula of Ferric Sulphate is:
	A.FeSo₄
	B.Fe (So₄)₃
	C.Fe₂ (So₄)₃
	D.Fe₂So₄

Ans: Fe₂ (So₄)₃

Q2.	Approximate atomic weight of an element is 26.89. If its equivalent weight is 8.9, the exact atomic weight of element would be
	A.26.89
	B.8.9
	C.17.8
	D.26.7

Ans: 26.89

Q3.	The total number of atoms represented by the compound CuSO₄. 5H₂O is
	A.27
	B.21
	C.5
	D.8

Ans: 21

Q4.	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

Ans: 10

Q5.	81.4 g sample of ethyl alcohol contains 0.002 g of water. The amount of pure ethyl alcohol to the proper number of significant figures is
	A.81.398 g
	B.71.40 g
	C.91.4 g
	D.81 g

Ans: 81.398 g

Q6.	Which of the following halogen can be purified by sublimation
	A.F₂
	B.Cl₂
	C.Br₂
	D.I₂

Ans: I₂

Q7.	1 mol of CH₄ contains
	A.6.02 × 10²³ atoms of H
	B.4 g atom of Hydrogen
	C.1.81 × 10²³ molecules of CH₄
	D.3.0 g of carbon

Ans: 4 g atom of Hydrogen

Q8.	The prefix zepto stands for
	A.10⁹
	B.10^-12
	C.10^-15
	D.10^-21

Ans: 10^-21

Q9.	Which has maximum number of atoms?
	A.24 g of C (12)
	B.56 g of Fe (56)
	C.27 gof Al (27)
	D.108 g of Ag (108)

Ans: 24 g of C (12)

Q10.	Irrespective of the source, pure sample, of water always yields 88.89% mass of oxygen and 11.11% mass of hydrogen. This is explained by the law of
	A.Conservation of Mass
	B.Multiple Proportions
	C.Constant Composition
	D.Constant Volume

Ans: Constant Composition

Q11.	Haemoglobin contains 0.33% of iron by weight. The molecular weight of haemoglobin is approximately 67200. The number of iron atoms (At. wt. of Fe = 56) present in one molecule of haemoglobin is
	A.6
	B.1
	C.4
	D.2

Ans: 4

Q12.	The -ve charged particles is called :
	A.Anion
	B.Cation
	C.Radical
	D.Atom

Ans: Anion

Q13.	Which of the following contains same number of carbon atoms as are in 6.0 g of carbon (C – 12) ?
	A.6.0 g Ethane
	B.8.0 g Methane
	C.21.0 g Propane
	D.28.0 g CO

Ans: 8.0 g Methane

Q14.	The density of a gas is 1.78 gL^-1 at STP. The weight of one mole of gas is
	A.39.9 g
	B.22.4 g
	C.3.56 g
	D.29 g

Ans: 39.9 g

Q15.	Molarity of 0.2 N H₂SO₄ is
	A.0.2
	B.0.4
	C.0.6
	D.0.1

Ans: 0.1

Q16.	Any charged particle is called:
	A.Atom
	B.Molecule
	C.Ion
	D.Mixture

Ans: Ion

Q17.	The balancing of equations is based upon which of the following law?
	A.Law of Multiple Proportions
	B.Law of Conservation of Mass
	C.Boyles Law
	D.Law of Reciprocal Proportions

Ans: Law of Conservation of Mass

Q18.	Irrespective of the source, pure sample, of water always yields 88.89% mass of oxygen and 11.11% mass of hydrogen. This is explained by the law of
	A.Conservation of Mass
	B.Multiple Proportions
	C.Constant Composition
	D.Constant Volume

Ans: Constant Composition

Q19.	A chemical formula based on actual number of molecule is called ____ formula:
	A.Structural
	B.Molecular
	C.Empirical
	D.None

Ans: Molecular

Q20.	Approximate atomic weight of an element is 26.89. If its equivalent weight is 8.9, the exact atomic weight of element would be
	A.26.89
	B.8.9
	C.17.8
	D.26.7