ICSE Class 10 Chemistry Question 23 of 93

Organic Chemistry — Question 48

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48
Question

Question 15

Fill in the blanks with the correct words from the brackets:

(a) Alkenes are the (i) ............... (analogous/homologous) series of (ii) ............... (saturated/unsaturated) hydrocarbons. They differ from alkanes due to the presence of (iii) ............... (double/single) bonds. Alkenes mainly undergo (iv) ............... (addition/substitution) reactions.

(b) The organic compound which undergoes substitution reaction is (v) ............... (C2H2, C2H4, C10H18, C2H6)

(c) Draw the structural formulae of the two isomers of Butane. Give the correct IUPAC name of each isomer.

Answer

(a) Alkenes are the (i) homologous series of (ii) unsaturated hydrocarbons. They differ from alkanes due to the presence of (iii) double bonds. Alkenes mainly undergo (iv) addition reactions.

(b) The organic compound which undergoes substitution reaction is (v) C2H6.

(c) The correct IUPAC names of isomers of Butane are Butane and 2-Methyl propane. Their structural formulae are given below:

  1. Butane [n-butane]
Give the structural formulae of n-butane. Organic Chemistry, Simplified Chemistry Dalal Solutions ICSE Class 10
  1. 2-Methyl propane [iso-butane]
Give the structural formulae of 2-methyl propane. Organic Chemistry, Simplified Chemistry Dalal Solutions ICSE Class 10