Jamb Chemistry Past Questions For Year 2022
Question 16
An organic compound contains 69% carbon, 15.3% hydrogen and 30.7% oxygen. Calculate the the empirical formula [C=12, H = 1, O = 16]
- A. C\(_4\)H\(_12\)O
- B. C\(_3\)H\(_9\)O
- C. C\(_4\)H\(_9\)O
- D. C\(_3\)H\(_8\)O
Question 17
Crude petroleum is converted to useful products by the process of?
- A. fractional crystallization
- B. fractional distillation
- C. filtration
- D. chromatography
Question 18
An organic compound which decolorizes bromine water is likely to be?
- A. C\(_3\)H\(_8\)
- B. C\(_2\)H\(_6\)
- C. C\(_4\)H\(_10\)
- D. C\(_2\)H\(_4\)
Question 19
When heat is absorbed during a chemical reaction, the reaction is said to be
- A. thermodynamic
- B. exothermic
- C. isothermal
- D. endothermic
Question 20
The dehydration of CH\(_3\)CH\(_2\)CH\(_2\)CH\(_2\)OH will give?
- A. HC≡CCH\(_2\)CH\(_3\)
- B. CH\(_2\)≡CH\(_2\)CH\(_3\)
- C. CH\(_3\)C≡CCH\(_3\)
- D. CH\(_3\)CH=CHCH\(_3\)
