A. H+ H H-
B. Li+ Na+ K+
C. C1- Br- I
D. F- Ne Na+
Which of the following are isoelectronic species ? Read More »
Chemistry Basic Concept, Chemistry Mcqs A. 1.6 x 10-27 kg
B. 1.6 x 10-24 kg
C. 1.6 x 10-26 kg
D. 1.6 x 10-28 kg
1 a.m.u =__________________? Read More »
Chemistry Basic Concept, Chemistry Mcqs A. Mass number
B. Atomic mass
C. Relative abundance
D. all of the above
A. NaCl
B. H2O
C. CCI4
D. It can be applied to all mentioned above
For which of the following compounds the term empirical formula cannot be applied ? Read More »
Chemistry Basic Concept, Chemistry Mcqs A. lighter
B. intermediate
C. heavier
D. are collected at same time
A. different number of protons
B. same number of neutrons
C. different number of neutrons
D. same mass number (nucleon number)
Isotopes of the same elements has__________________? Read More »
Chemistry Basic Concept, Chemistry Mcqs A. sand
B. haemoglobin
C. diamond
D. maltose
Which of the following is not a macromolecule ? Read More »
Chemistry Basic Concept, Chemistry Mcqs A. Mass of an atom itself is in fraction
B. Atomic masses are average masses of isobars
C. Atmoic masses are average masses of isotopes proportional to their relative abundance
D. Atmoic masses are average masses of isotopes
Mostly elements have fractional atomic masses because of______________________? Read More »
Chemistry Basic Concept, Chemistry Mcqs A. 80%
B. 30%
C. 40%
D. 20%
Percentage of calcium in calcium carbonate is___________________? Read More »
Chemistry Basic Concept, Chemistry Mcqs A. 154
B. 280
C. 86
D. 300
How many isotopes have odd atomic number ? Read More »
Chemistry Basic Concept, Chemistry Mcqs