Everyday Science MCQs

5120 MCQs  (Page 277 of 512)

Michael Faraday discovered benzene in the gas which was produced by destructive distillation of vegetable oil that is done in________________?
A. The presence of oxygen
B. The presence of hydrogen
C. The absence of oxygen
D. The presence of excessive oxygen
The resonance energy of benzene is__________________?
A. 150.5 kj/mol
B. 250.5 kj/mol
C. 150.5 cal/mol
D. 250.5 cal/mol
Which one of the following pairs shown diagonal relationship in the periodic table ?
A. Sodium and lithium
B. Lithium and magnesium
C. Lithium and beryllium
D. Boron and beryllium
Sodium is not observed in +2 oxidation state because of its__________________?
A. High first ionization potential
B. High second ioniation potential
C. High ionic radius
D. High electronegativity