# A certain refrigerating system has a normal operating suction pressure of 10 kg/cm gauge and condensing pressure of about 67 kg/cm. The refrigerant used is _____ ? with Answer - Mechanical Engineering Mcqs | TestPrep

> Solved MCQ: A certain refrigerating system has a normal operating suction pressure of 10 kg/cm gauge and condensing pressure of about 67 kg/cm. The refrigerant used is _____ ? Correct Answer: B. Carbon dioxide. Verified answer explanation for FPSC, PPSC, MDCAT, NTS, and CSS competitive exam preparation.

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# A certain refrigerating system has a normal operating suction pressure of 10 kg/cm gauge and condensing pressure of about 67 kg/cm. The refrigerant used is _____ ?

Direct Answer & Quick Reference

The correct option is **B. Carbon dioxide**.

A. Ammonia

B. Carbon dioxide **(Correct Answer)**

C. Freon

D. Brine

E. Hydrocarbon refrigerant

✨ Explain with AI

Verified Key: B. Carbon dioxide
Solved by 1,779+ students

Verified against official examination board answer keys and standard curriculum textbooks.

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