Basic concepts and Experimental Techniques in Chemistry MCQ's

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Here are MCQ's from chapter 1 basic concepts and chapter 2 Experimental techniques in chemistry Book 1

1. Most of the atoms show diameter in the order of

A) 2 x 10 ^ -10 cm
B) 0.1 m
C) 10 ^ -10 pm
D) 0.2 nm

2. All of the following statements are correct except

A) Number of negative ions having group of atoms is greater than number of positive ions
B) Number of cationic molecular ions is greater than number anionic molecular ions
C) NH4+ ion is molecular ion
D) Molecular ions are formed by alpha rays and beam of electrons

3. Which of the following is/are correct statement(s)

A) Proton number of isotopes of an element is same
B) Proton number of elements are different
C) Mass number of isotopes and average atomic mass of elements are different
D) all

4. Which of the following term is used for isotopes

A) Isotropy
B) Anisotropy
C) Isotropy
D) Allotropy

5. Mass spectrometer is used to determine

A) Mass number of isotopes
B) Relative abundance of isotopes
C) Both a and b
D) one

6. One mole of SO2 contains

A) 6.02 x 10^23 atoms of oxygen
B) 6.02 x 10^23 atoms of sulphur
C) 1.003x10 ^23 molecules of SO2
D) 3.01x10^23 atoms of SO2

7. In combustion analysis, CO2 produced during the combustion of an organic compound is absorbed in

A) Mg(ClO4)2
B) 50% KOH
C) Al2O3
D) H2SO4

8. Which of the following statement is not involved in determination of empirical formula?

A) Determination of %age of each element
B) Determination of gram atom of each element
C) Determination of isotopes of each element
D) Determination of atomic ratio of element

9. In a sample of glucose, there are 3.6 x 10^24 atom of carbon are present. Mass of glucose sample is

A) 180 g
B) 3600 g
C) 360 g
D) 342g

10. Volume occupied by 11 g of carbon dioxide at 0 degree and 1 atm. Pressure is

A) 22.414 dm3
B) 5.6035 dm3
C) 2.2414 dm3
D) 1012 dm3