(A) Mendeleeve’s postulates
(B) Atomic mass
(C) Mass number
(D) Atomic number
Who discovered Neutron?
(A) Chadwick
(B) J.J. Thomson
(C) Rutherford
(D) None of the above
What is the most abundant element occuring in the ocean?
(A) Oxygen
(B) Hydrogen
(C) Nitrogen
(D) Silicon
Most reactive metal is?
(A) Li
(B) Na
(C) Ca
(D) Cs
The oxidation of all elements in free state is?
(A) Zero
(B) One
(C) Two
(D) Three
The oxidation number of Nitrogen in HNO3 is?
(A) +4
(B) +5
(C) +6
(D) +7
___ will show negligible effect of temperature on its solubility.
(A) KNO3
(B) KCL
(C) NaNO3
(D) NaCl
___ is not an amorphous solid?
(A) Glass
(B) Rubber
(C) Plastic
(D) Glucose