Question

Which one of the following substances used in dry cleaning is a better strategy to control environmental pollution?
A. Sulphur Dioxide
B. Carbon Dioxide
C. Nitrogen Dioxide
D. Tetrachloroethylene

Answer 1

Hint: Three other green cleaning methods follow the traditional solvent model but use carbon dioxide, hydrocarbon or silicon-based cleaners instead of perc(tetrachloroethylene).

Step by step answer: Carbon dioxide (\[C{{O}_{2}}\]) cleaning utilizes fluid \[C{{O}_{2}}\] as the cleaning dissolvable alongside cleanser. The fluid \[C{{O}_{2}}\] is framed by setting the non-combustible and nontoxic gas under high tension. Fluid \[C{{O}_{2}}\] is non-poisonous and is really used to give carbonation to sodas. Garments are set in what gives off an impression of being a customary cleaning machine and the encompassing air is sucked out. The cleaning drum is then infused with carbon dioxide in the two gas and fluid structures. After the garments are cleaned, the fluid \[C{{O}_{2}}\] is siphoned once again into a holding tank for reuse.
The cycle is, maybe, the most naturally benevolent on the grounds that the \[C{{O}_{2}}\] is caught as a side-effect of existing modern cycles. Since under three percent of the \[C{{O}_{2}}\] utilized is lost into the air with each heap of attire, its effect on an Earth-wide temperature boost is insignificant. The cycle utilizes less energy than conventional cleaning on the grounds that there is no dissolvable to warm.
While \[C{{O}_{2}}\] is normally happening and economical, the laundry machines cost around $40,000 each making them cost restrictive for some independent companies.

Hence, the correct option is B. Carbon Dioxide(\[C{{O}_{2}}\]).

Note: The province of California is driving the route toward green cleaning by resolving to eliminate the utilization of perc by 2023. The state offers cash to cleaners that change from perc to \[C{{O}_{2}}\] or wet cleaning. Different states are thinking about comparative enactment.