(A) 26
(B) 27
(C) 28
(D) 29
What is the atomic mass of sulphure?
(A) 31
(B) 32.06
(C) 33.36
(D) 40.595
Atomic number of Neon is?
(A) 8
(B) 9
(C) 10
(D) 11
Which of the following acid is present in Tamarind?
(A) Lactic acid
(B) Formic acid
(C) Tartaric acid
(D) Citric acid
‘s’ and ‘p’ block elements are called?
(A) Representative elements
(B) Outertransition elements
(C) Inner transition elements
(D) Zero group elements
the concept of four elements on earth was introduced by?
(A) Empedocles
(B) Al Kundi
(C) Bu Ali Sina
(D) Aristotle
The natural abundance of O16 is?
(A) 0.204%
(B) 99.76%
(C) 0.037%
(D) None of the above
what is the unit of ionization energy?
(A) Mole
(B) Nanometer
(C) KJ/mole
(D) Kg/mole