How many pairs of electrons are shared in a double covalent bond?
A) One
B) Two
C) Three
D) Four
Correct Answer:
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Q12: Which of the following structures represents a
Q13: CnH2n is the general formula for the
A)Alkynes
B)Alkenes
C)Alkanes
D)Aromatics
Q14: Which hydrocarbon series is saturated?
A)Alkenes
B)Alkynes
C)Alkanes
D)Aromatics
Q15: Alkyl groups have the general formula
A)CnH2n
B)CnH2n+1
C)CnH2n+2
D)CnHn+2
Q16: Which hydrocarbon series contains a benzene ring?
A)Alkanes
B)Alkenes
C)Alkynes
D)Aromatics
Q18: CnH2n+2 is the general formula for the
A)Alkenes
B)Alkynes
C)Alkanes
D)Aromatics
Q19: Which is unsaturated?
A)C3H8
B)C4H10
C)CH4
D)C5H8
Q20: CnH2n-2 is the general formula for the
A)Alkynes
B)Alkanes
C)Alkenes
D)Aromatics
Q21: Which has the greatest number of isomers?
A)CH4
B)C2H6
C)C3H8
D)C4H10
Q22: CH3CH=CHCH2CH3 is
A)pentane.
B)pentyne.
C)2-pentene.
D)3-pentene.
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