Chemistry Past Questions And Answers
1521
In the electrolytic extraction of cacium from calcium chloride, the cathode is
- A) zinc
- B) graphite
- C) platinum
- D) iron
1522
A hydrogen atom which has lost an electron contains
- A. one proton only
- B. one neutron only
- C. one proton and one neutron
- D. one proton, one electronic and one neutron
1523
The IUPAC nomenclature for the structure above is
- A. 2, 3 - dichloro - 4, 4, 5 - trimethyl pent - 2 - ene
- B. 4, 5 - dichloro - 2, 3 - dimethyl hex - 2 - ene
- C. 2, 3 - dichloro - 4, 4 - dimethyl hex - 2- ene
- D. 2, 3 dichloro - 2, 2 - dimethyl hex - 2 - ene
1524
The type of reaction an alkanoic acid cannot undergo is
- A) Oxidation
- B) Combustion
- C) Decomposition
- D) Esterification
1525
Fermentation is the
- A. breaking down of carbohydrate to glucose
- B. conversion of sugar to alcohol in the presence of yeast
- C. breaking down of sugar to carbohydrate
- D. conversion of alcohol to sugar in the presence of yeast
1526
Which of the following statements does not show Rutherford's account of Nuclear Theory? An atom contains a region
- A) which contains protons and neutrons
- B) which is positively charged
- C) which is massive and can cause deflection of a few projectiles
- D) which is very large and in which close to 98% of projectiles pass undeflected
1527
Diamond cannot be used
- A) In making bicycle chains
- B) As abrasives
- C) In cutting glass and metals
- D) As dies for drawing wires
1528
The dispersion of a liquid in a liquid medium will give
- A) an emulsion
- B) a fog
- C) a gel
- D) an aerosol
1529
Which of the substances is non-polar?
- A. Bromine
- B. Ammonia
- C. Water
- D. Hydrogen Bromide
1530
Which of the following statements is not correct? Group 7 elements
- A. are diatomic
- B. are good oxidizing agents
- C. are highly electronegative
- D. have relatively low ionization potentials