Mass spectrometer is used to determine Mass number of isotopes and___________________?
(A) Atomic number
(B) Relative abundance
(C) Electronic configuration
(D) All of the above
The properties of an element mosly corresponds to that isotope which has greater_________________?
(A) Mass number
(B) Atomic mass
(C) Relative abundance
(D) all of the above
For which of the following compounds the term empirical formula cannot be applied ?
(A) NaCl
(B) H2O
(C) CCI4
(D) It can be applied to all mentioned above
When cationic molecular ions are allowed to pass through strong magnetic field in mass spectrometer which of the following ions is fallen__________________?
(A) lighter
(B) intermediate
(C) heavier
(D) are collected at same time
Isotopes of the same elements has__________________?
(A) different number of protons
(B) same number of neutrons
(C) different number of neutrons
(D) same mass number (nucleon number)
The number of moles of CO2 which contains 16 g of oxygen is__________________?
(A) 0.25
(B) 0.5
(C) 0.75
(D) 1
The volume occupied by 2.8 g of N2 at STP______________________?
(A) 2.24 dm3
(B) 22.4 dm3
(C) 1.12 dm3
(D) 112 dm3