Write one use of each of the following substances- 3
a) Paraffin wax b) Fuel oil c)
Lubricating oil
d) Coke e) Coal Tar f) Coal Gas
Answers
1. Candles
2. Waterproofing
3. Crayons
4. Friction Reducer
5. Coatings
B) uses of fuel oil-
Heating oil, also called fuel oil, is used in boilers and furnaces for heating homes and buildings, for industrial heating, and for producing electricity in power plants.
C) uses of Lubricating oil-
1. It reduces the friction and moving the parts apart from each other.
2. It carries away a considerable amount of heat from the underside of the piston crowns, the valve stems and connecting rod main bearings.
3. It protects the working surface against corrosion.
4. It carries away the contaminators and debris.
5. It removes gritty and carbonaceous deposits of the working surface
6. It reduces operation noise.
D) uses of Coke-
The most common use of coke is as a fuel for stoves, furnaces and blacksmithing. It is sometimes preferred over coal because burning coke produces very little smoke.
It is also used to produce iron in a blast furnace.
Coke is used to manufacture steel and many other materials.
E) uses of coal tar-
Coal tar is widely used to manufacture paints, perfumes, synthetic dyes, photographic material, drugs and explosives.
It can be utilized to make insecticides and pesticides. Naphthalene balls that are commonly used to keep moths away are made from tar.
Coal tar is an ingredient of anti-dandruff and lice-repelling shampoos, soaps and ointments.
F)uses of coal gas-
It is mainly used as a fuel in industries situated near coal processing plants.
Earlier, it was used as a source of light. In the year 1820, it was used in London for the first time as street lighting.
Now, it is more commonly used to provide heat for domestic and industrial purposes.
Explanation:
a) paraffin wax: is also called as paraffin fluid which is
commonly used to treat dry skin , constipation and eczema. And also used as a coolant in electrical systems.
b) Another name of heating oil also known as fuel oil is used in boilers and furnaces for heating homes and buildings and also used for produce electricity in power plants.
c)Lubricating oil is used to reduce friction, heat,and wear between mechanical components that are in contact with each other. also used in motorised vehicles.
e)coal thar is used primarily for the production of refined chemicals and coal thar - products such as creosote and coal thar- pitch. some skin creams, nail paints, ointments, etc. produced from coal thar.
f) coal gas is used in lighting. And also used as an illuminant.