Isomerism, Petroleum, Petrochemicals Jamb Chemistry Past Questions
Question 6
Which of the following derivatives of nitrogen affords an aqueous solution having a pH of less that 7?
- A. N2O
- B. NO
- C. NO2
- D. NaNO3
- E. NH3
Question 7
The compounds CH3CH2CHO and CH3COCH3 can be distinguished from each other using
- A. Dilute ammonia
- B. Benedict's solution
- C. Tollen's reagent
- D. Sodium hydroxide solution
Question 8
Cast iron is used in making
- A. Chains and agricultural implements
- B. Iron sheets and retort stand
- C. Nails and iron rods
- D. Stoves and cookers
Question 9
When few drops of concentrated trioxonitrate(V) acid is added to an unknown sample and wanned an intense yellow colouration is observed. The likely functional group present in the sample is
- A. NH2RCHCOOH
- B. CHO
- C. CO
- D. CNH2
Question 10
An isomer of C5H12 is
- A. 2–ethyl butane
- B. butane
- C. 2–methyl butane
- D. 2–methyl propane
