Jamb Chemistry Past Questions For Year 2009

Question 36

The gas that is most useful in protecting humans against solar radiation is?

jamb 2009

  • A. chlorine
  • B. ozone
  • C. carbon (IV) oxide
  • D. hydrogen sulphide
View Answer and Explanation

Question 37

The gasification of coke is used for the manufacturing of?

jamb 2009

  • A. producer gas
  • B. natural gas
  • C. synthetic gas
  • D. industrial gas
View Answer and Explanation

Question 38

Which of the following molecules has two other positional isomers?

jamb 2009

  • A. CH3CH2Br
  • B. CH3CHBrCH3
  • C. CBr2F2
  • D. CH2CHBrCH2Br
View Answer and Explanation

Question 39

A cracking process in petroleum refining can be represented by

jamb 2009

  • A. heptane to heptene
  • B. heptane to 3-methylhexane
  • C. heptane to propene and butane
  • D. heptane to 2,3,3-trimethybutane
View Answer and Explanation

Question 40

One of the products of the thermal decomposition of sodium trioxonitrate (V) is?

jamb 2009

  • A. sodium
  • B. nitrogen
  • C. sodium dioxonitrate (III)
  • D. sodium oxide
View Answer and Explanation