Which one can form complex ?

A. Na
B. Cr
C. Li
D. K

Addition of 2% gypsum in cement________________?

A. Triggers hydration
B. Triggers hydrolysis
C. Prevents rapid hardening
D. All of the above

Phenanthrene is a fused polycyclic compound contains __________ benzene rings ?

A. Two
B. Three
C. Four
D. Five

How many electrons are there in benzene to form delocalized electron cloud________________?

A. 3
B. 4
C. 6
D. 8

When benzene is substituted by halogens only which one of the following halogens only which one of the following halogens is given the number one position in the ring while writing the name of compound ?

A. Bromine
B. Chlorine
C. Fluorine
D. Iodine

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

How many moles of H2 are added up when benzene is heated with hydrogen in the presence of platinum ?

A. Two
B. Three
C. Four
D. Six

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 substances conducts electricity by the movement of ions ?

A. Graphite
B. Copper
C. Molten sodium chloride
D. Mercury

Which one of the following carbonate is water insoluble ?

A. Na2co3
B. K2co3
C. (nh4)2co3
D. Caco3