Acetylene gas is dissolved in ________ for safe storage and usage.

Question

Question

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RRB ALP Mechanic Diesel 21 Jan 2019 Official Paper (Shift 1)

Answer 1

Explanation:

Properties of Acetylene gas:

Acetylene is a fuel gas, which produces a very high-temperature flame with the help of oxygen because it has more amount of carbon (92.3%) than any other fuel gas.
The temperature of the oxy-acetylene flame is 3100°C - 3300°C.
Acetylene is composed of:
- Carbon 92.3% (24 parts)
- Hydrogen 7.7% (2 parts)
Its chemical symbol is C₂H₂ which shows that two atoms of carbon are combined with two atoms of hydrogen.
It is a colorless gas, lighter than air.
It has a specific gravity of 0.9056 as compared with air.
It is highly inflammable and burns with a brilliant flame.
It is slightly soluble in water and alcohol.
Impure acetylene has a pungent (garlic-like) odor.
It can be easily detected by its peculiar smell.
Acetylene dissolves in acetone liquid.
The liquid acetone dissolves the acetylene gas in large quantities as a safe storage medium: hence, it is called dissolved acetylene.
One volume of liquid acetone can dissolve 25 volumes of acetylene gas under normal atmospheric pressure and temperature.
During the gas charging operation, one volume of liquid acetone dissolves 25 × 15 = 375 volumes of acetylene gas under 15 kg/cm² pressure at normal temperature.
While charging cold water will be sprayed over the acetylene gas cylinder so that the temperature inside the cylinder does not cross a certain limit