FSC Part 1 Chemistry Chapter 1 Basic Concepts Online Test

Chemistry Fsc Part 1 Chapter 1 Online Test

Sr. #	Questions	Answers Choice
1	The separation of the different isotopes in the mass spectrometer is done on the basis of	Different amounts of positive changes Charge e/m value different amounts of negative changes Different m/e value Velocities of the ions
2	Isotopes are the atoms of same element with similar chemical properties but different	Atomic number Atomic volume Atomic weight Atomic structure
3	Calcium has isotopes	7 9 1 6
4	The volume occupied by 1.4 g on N₂at S.T.P is	2.24 dm<sup>3</sup> 22.4 dm<sup>3</sup> 1.12 dm<sup>3</sup> 112 cm<sup>3</sup>
5	The number of moles of CO₂which contain 8.0 g of oxygen	0.25 0.50 1.0 1.50
6	The mass of one mole of electrons is	1.008 mg 0.55 mg 0.184 mg 1.673 mg
7	Many elements have fractional atomic masses. This is because	The mass of the atom is itself fractional Atomic masses are average masses of isobars Atomic masses are average masses of isotopes Atomic masses are average masses of isotopes proportional to their relative abundance
8	Isotopes differ in	Properties which depend upon mass Arrangement of electrons in orbital Chemical properties which depend upon weight Atomic number