Which of the following exhibits resonance?
Benzene
Butane
Pentene
Octana
Hexene
Correct answer is A
No explanation has been provided for this answer.
If the third member of a homologous series is C3H8, the fifth member will be
C 5H8
C5H9
C5H10
C5H11
C5H12
Correct answer is E
No explanation has been provided for this answer.
What does X represent in the following equation? H 2(g) + 1/2O2(g) → H2O (l); ∆H = xKJ.
Bond energy
Activation energy
Ionization energy
Enthalpy of neutralization
Enthalpy of formation
Correct answer is E
No explanation has been provided for this answer.
cooling the reaction mixture
using zinc powder instead of zinc granules
using zinc rod instead of zinc granules
carrying out the reaction at a higher pressure
carrying out the reaction in a closed vessel
Correct answer is B
No explanation has been provided for this answer.
Which of the following is not correct about a catalyst? It
remains unchanged chemically at the end of a reaction
helps to establish equilibrium faster reversible reaction
can start a chemical rection which will normally not take place
is usually specific in its action
alters the rate of chemical reaction
Correct answer is C
No explanation has been provided for this answer.