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Engineering Exams RRB-JE CMA (Chemical and Metallurgical Assistant) Technical Abilities 2025 22.04.25 Paper-2 Shift-1 Medium +1 -0.33
Which of the following is/are the use(s) of washing soda? i. Sodium carbonate (washing soda) is used in glass, soap, and paper industries. ii. It is used in the manufacture of sodium compounds such as borax.
Correct Answer: C. Both i and ii
Explanation: Washing soda, chemically known as sodium carbonate, serves multiple purposes in industrial and domestic applications. It is a vital raw material in the production of glass, soap, and paper. Additionally, it plays a key role in the manufacturing of various sodium-based chemicals, including borax. Since both stated uses are correct, the appropriate choice is Both i and ii.
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