(A) 17.86 g cm-3
(B) 7.86 g cm-3
(C) 27.86 g cm-3
(D) 2.70 g cm-3
___ is an electron deficient molecule.
(A) BF3
(B) N2
(C) O2
(D) NH3
Atomic radius of Carbon is?
(A) 77 pm
(B) 88 pm
(C) 113 pm
(D) 75 pm
___ halogen has the lowest electronegativity.
(A) Chlorine
(B) Bromine
(C) Iodine
(D) Flourine
Electrons can revolve only in those orbits which have fixed angular momentum?
(A) mvr=[2nh/3Π]
(B) mvr=[2nh/Π]
(C) mvr=[nh/2Π]
(D) mvr=[nh/Π]
One gram molecule of H2 is?
(A) 1.008 gram
(B) 2 gram
(C) 1 gram
(D) 1.8 gram
Symbol of Potassium is?
(A) P
(B) Ag
(C) Hg
(D) K
ICC T20 player of the decade Rashid Khan will play from which franchise in PSL 2021.
(A) Karachi Kings
(B) Lahore Qalandar
(C) Quetta Gladiators
(D) Islamabad United