Students should refer to Worksheets Class 11 Chemistry Some Basic Concepts of Chemistry Chapter 1 provided below with important questions and answers. These important questions with solutions for Chapter 1 Some Basic Concepts of Chemistry have been prepared by expert teachers for Class 11 Chemistry based on the expected pattern of questions in the class 11 exams. We have provided Worksheets for Class 11 Chemistry for all chapters on our website. You should carefully learn all the important examinations questions provided below as they will help you to get better marks in your class tests and exams.
Some Basic Concepts of Chemistry Worksheets Class 11 Chemistry
Question. 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
Answer
D
Question. 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
Answer
C
Question. 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
Answer
B
Question. 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
Answer
A
Question. 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
Answer
C
Question. 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
Answer
A
Question. 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)
Answer
A
Question. Which of the following halogen can be purified by sublimation
(a) F2
(b) Cl2
(c) Br2
(d) I2
Answer
D
Question. The -ve charged particles is called :
(a) Anion
(b) Cation
(c) Radical
(d) Atom
Answer
A
Question. Formula of Ferric Sulphate is:
(a) FeSo4
(b) Fe (So4)3
(c) Fe2 (So4)3
(d) Fe2So4
Answer
C
