Which one of the following compounds shows intense knocking ?
A. n-pentane
B. iso-heptane
C. iso-octane
D. n-heptane
Submitted by :- Jamil Ahmed
CHEMISTRY
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At low temperature and pressure cracking can be done in presence of catalyst________________?
A. Al2O3
B. Fe2O3
C. Al2O3 and SiO2
D. Fe2O3 and SiO2
Submitted by :- Jamil Ahmed
Crude oil is blackish coloured liquid produced after the decay of organic matter present between_________________?
A. earth layer
B. mountains
C. sedimentary rocks
D. rocks
Submitted by :- Jamil Ahmed
Coal is produced after a long time decay of_________________?
A. animals
B. fossils
C. wood
D. all of the above
Submitted by :- Jamil Ahmed
Rate of reactions of most organic compounds are____________________?
A. very slow
B. very fast
C. slow
D. no regular character present
Submitted by :- Jamil Ahmed
Which one of the following is a state function ________________?
A. pressure
B. temperature
C. enthalpy
D. all of the above
Submitted by :- Jamil Ahmed
Pumping of water uphill is_______________?
A. spontaneous process
B. non-spontaneous process
C. irreversible process
D. reversible process
Submitted by :- Jamil Ahmed
Reaction in which heat evolves is called ____________________?
A. endothermic
B. spontaneous
C. non-spontaneous
D. exothermic
Submitted by :- Jamil Ahmed
Anything which depends upon initial and final state of a system is_______________?
A. environment
B. surrounding
C. state function
D. enthalpy
Submitted by :- Jamil Ahmed
The environment in which a system is studied is __________________?
A. State function
B. phase
C. surrounding
D. state
Submitted by :- Jamil Ahmed