Chemistry Questions and Answers
| 49. |
Which of the following is chiefly present in LPG (Liquefied Petroleum Gas)? |
| |
- A. methane
- B. propane
- C. ethane
- D. butane
|
| 50. |
Bleaching powder is manufactured by using |
| |
- A. rotatory kiln
- B. contact chamber
- C. solvay tower
- D. bachmann’s plant
|
| 51. |
What type of glass is used in telecommunications? |
| |
- A. optical fibres
- B. covalent
- C. soda glass
- D. flint glass
|
| 52. |
Which one of the following is left when an hydrogen atom loses its electron? |
| |
- A. an alpha particle
- B. a neutron
- C. a beta particle
- D. a proton
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