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.Management Sciences
Category: Chemistry Mcqs
What catalyst is employed when benzene is prepared from acetylene at 70°C?
A. Cr2O3 + A2O3 + SiO2
B. Raney nickel
C. Organo-nickel
D. Ni 250 – 300°C
The property of carbon chain formation is called _________________?
A. catenation
B. hybridization
C. polymerization
D. solvation
Linds method is employed for__________________?
A. Separation of gases
B. Expansion of gases
C. Compression of gases
D. Liquefaction of gases
Which of the following will be acidic_____________?
A. propyne
B. 1-butyne
C. ethyne
D. all of the above
Pi bonds are produced by overlapping of__________________?
A. Un-hybrid orbitals
B. Hybrid orbitals
C. Hybrid and un hybrid orbitals
D. atomic orbital and hybrid orbital
In unsaturated hydrocarbons electrons favour___________________?
A. less reactivity
B. addition reactions
C. substitution reactions
D. none
Crystallization does not involve_______________?
A. heating
B. sublimation
C. cooling
D. vaporization
The balanced chemical equation for the reaction which occurs when Be is added to water is____________?
A. Be+2H2O?Be (OH)2+H2
B. Be+H2O?Be (OH)2+H2
C. Be+H2O?[Be (OH)4]+2+H2
D. no reaction
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