Answer to Question #52277 in Physics for vi

Question

State an impossible hazard caused by smoking in a labouratory
It may cause a fire accident, especially while flammable solvents are stored.
Hot zone of a lighted cigarette may help in the formation of poisonous substances in presence of some chemicals.
Smoking is not directly related to a decrease in human function
Minute particles in smoke may interfere with or spoil purity, chemical processes and electronic parts.
2 The following must be observed in the laboratory EXCEPT
keep LPG cylinders outside the laboratory
regulate the pressure of the gas to the optimum level
use spark free switches where LPGs are in use
allow the gas to flow freely for sometime before lighting a match
3 some of the possible causes of electrical mishap include the following except
impropr choice of fuse
broken fuse wire
break in the earthing system
improper wiring
4 In the wiring of a plug, the green flex is connected to
live
earth
source
neutral

Answer 1

Answeron Question #
State an impossible hazard caused bysmoking in a laboratory
It may cause a fire accident, especiallywhile flammable solvents are stored.
Hot zone of a lighted cigarette may help inthe formation of poisonous substances in presence of some chemicals.
Smoking is not directly related to adecrease in human function
Minute particles in smoke may interferewith or spoil purity, chemical processes and electronic parts.
Answer: Smoking is not directlyrelated to a decrease in human function.

2 The following must be observed in thelaboratory EXCEPT
keep LPG cylinders outside the laboratory
regulate the pressure of the gas to theoptimum level
use spark free switches where LPGs are inuse
allow the gas to flow freely for sometimebefore lighting a match
Answer: allow the gas to flow freelyfor sometime before lighting a match.

3 some of the possible causes of electricalmishap include the following except
impropr choice of fuse
broken fuse wire
break in the earthing system
improper wiring
Answer: broken fuse wire.

4 In the wiring of a plug, the green flexis connected to
live
earth
source
neutral
Answer: earth.