Question

Study the table related to three hydrocarbons P,Q, R and answer the questions
that follow.
Organic compound Molecular formula
P C3H8
Q C5H1 0
R C4H6
19(i) P,Q& R are classifies as hydrocarbons because ?
(a)they contain carbon. (b)they contain hydrogen.
(c)they contain both carbon and hydrogen. (d) non of these
19(ii) Which of these organic compounds is an alkyne?
(a)P (b) Q (c)R (d) both P & Q
19(iii)C3H8 belongs to
(a) CnH2 n+2 series (b) CnH2 n series (c) CnH2 n-2 series (d) None of these
19(iv)Identify the incorrect statement about these three hydrocarbons.
(a) all have different general formula (b) P, Q both differ by –CH2 unit
(c) P is an Alkane (d) Q is an Alkene
19(v) General formula for Alkyne is
(a) CnH2 n (b) CnH2 n+2 (c) CnH2 n-2 (d) CnHn

Answer 1

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