You are given the following molecular formulae of some hydrocarbons:C5 H8 ; C7 H14 ; C6 H6 ; C5 H10 ; C7 H12 ; C6 H12 (a) Which formula represents cyclohexane as well as hexane? (b) Which formula represents benzene? (c) Which three formulae represent open chain unsaturated hydrocarbons having double bonds? (d) Which two formulae represent unsaturated hydrocarbons having triple bonds? (e) Which three formulae can represent cyclic hydrocarbons?
(a) The formula representing cyclohexane as well as hexene is C6 H12 .
(b) The formula of benzene is C6 H6 .
(c) Three formulae representing open-chain unsaturated hydrocarbons having double bonds are C7 H14 ; C5 H10 ; C6 H12 .
(d) Two formulae representing unsaturated hydrocarbons having triple bonds are C5 H8 and C7 H12 .
(e) Three formulae that can represent cyclic hydrocarbons are C7 H14 ; C5 H10 ; C6 H12 .
Related Articles The unsaturated hydrocarbons which contain one or more double bonds are called ____________.
Two organic compounds A and B have the same molecular formula C6H12. Write the names and structural formulae:(a) if A is a cyclic compound(b) if B is an open chain compound(c) Which compound contains single bonds as well as a double bond?(d) Which compound contains only single bond?
(a) Give IUPAC names and formulae of an organic compound containing single bonds and the other containing a triple bond.(b) Which of the following is the molecular formula of benzene? C6H6 , C6H10 , C6H12 , C6H14 (c) Which of the two has a branched chain: isobutene or normal butane?
Which of the following hydrocarbons is unsaturated?C3H4 ; C2H6
(a) What are hydrocarbons? Explain with examples.(b) Explain the meaning of saturated and unsaturated hydrocarbons with two examples each. (c) Give the names and structural formulae of one saturated cyclic hydrocarbon and one unsaturated cyclic hydrocarbon. (d) Give one example of a hydrocarbon, other than pentane, having more than three isomers. (e) How many isomers of the following hydrocarbons are possible? (i) C3H8 (ii) C4H10 (iii) C5H12 (iv) C6H14
Three organic compounds A, B and C have the following molecular formulae:A C4H8O2B C4H10OC C4H8O(a) Which compound contains an alcohol group? Write its name and structural formula.(b) Which compound contains a carboxyl group? Write its name and structural formula.(c) Which molecular formula can represent an aldehyde as well as a ketone? Write the names and structural formulae of the aldehyde and ketone represented by this molecular formula.
Unsaturated Hydrocarbons
Which of the following hydrocarbons can decolourise bromine water and which cannot? Why?C6H12, C6H14, C6H10
(a) Give the names and structural formulae of the next two higher homologues of methane.(b) The molecular formula of a hydrocarbon is C10H18. Name its homologous series. (c) Select the hydrocarbons which are members of the same homologous series. Give the name of each series. C5H10 ; C3H8 ; C6H10 ; C4H10 ; C7H12 ; C8H16.
(a) Giving their structures, state the number of single bonds, double bonds and triple bonds(if any) following compounds:(i) ethyne (ii) ethene (iii)benzene (b) Write the molecular formula and structure of cyclohexane. How many covalent bonds are there in the molecule of cyclohexane?
Which among the following are unsaturated hydrocarbons?(a) (i) and (iii)(b) (ii) and (iii)(c) (ii) and (iv)(d) (iii) and (iv)."\n
Mention two differences between saturated and unsaturated hydrocarbons.
Unsaturated hydrocarbons contain multiple bonds between the two C-atoms and show addition reactions. Give the test to distinguish ethane from ethene.
Which of the following represents a correct chemical formula ?(a) CaCl (b) Na3N (c) NaSO4 (d) NaS
Which of the following hydrocarbons will give substitution reactions and why?CH4, C3H6, C3H8, C4H6, C5H12, C5H10
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