41. Calculate the mass of copper deposited if a current of 0.45A flows through CuSO4 solution for 1hour 15mins. [Cu=64.0, S= 32.0, O =16.0, 1F= 96500C]
- A. 6.40g
- B. 0.67g
- C. 0.64g
- D. 0.45g
42. Classification of alkanols is based on the
- A. number of carbon atoms present in the compound
- B. molecular mass of the compound
- C. molecular formula of the compound
- D. number of alkyl groups bonded to the carbon having the hydroxyl group
43. The name of the compound \(C_{4}H_{9}COOC_{3}H_{7}\) is
- A. propyl pentanoate
- B. pentyl propanoate
- C. butyl propanoate
- D. propyl butanoate
44. Which of the following pairs of gases are pollutants from car exhaust?
- A. Nitrogen(II) oxide and Carbon(IV) oxide
- B. Carbon(IV) oxide and Nitrogen
- C. Carbon(II) oxide and Sulphur(IV) oxide
- D. Carbon(II) oxide and oxygen
45. Fats and oils can be obtained from any of the following sources except
- A. paraffin oil
- B. animals
- C. groundnuts
- D. palm kernel
46. The condensation of two units of glucose will produce a dissacharide with the formula \(C_{12}H_{22}O_{11}\) which is
- A. sucrose
- B. maltose
- C. galactose
- D. mannose
47. The IUPAC name for the compound \(ClCH_{2}CH_{2}OH\) is
- A. 1- chloropropanol
- B. 2-chloropropanol
- C. 1-chloroethanol
- D. 2-chloroethanol
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48. The real harmful effect of the release of chlorofluorocarbons into the atmosphere is that it eventually causes
- A. excessive ultraviolet light from the sun to reach the earth surface
- B. excessive release of infrared light from the sun to the earth surface
- C. corrosive effect of the chemicals on humans and animals
- D. acidic effect of chemicals on humans
49. 
A primary alkanol has a molecular mass of 60. What is the structural formula of the compound? [C= 12.0, H= 1.0, O= 16.0)
50. Petroleum is a non-renewable source of energy because it
- A. is formed naturally
- B. is cheap
- C. can be recycled after use
- D. cannot be regenerated once used up
D
Hi Fatima,
Do have any question?