The numerical designation of air as refrigerant is :

Question 1

The numerical designation of air as refrigerant is :
1. 717
2. 718
3. 729
4. 744

Question 2

Correct Answer - Option 3 : 729

Explanation:

Nomenclature of refrigerants :

Refrigeration	Designation	Example
Fully Saturated Hydrocarbon compounds (freon)	R - (m-1)(n + 1)p n + p + q = 2m + 2 C_mH_nF_pCl_q	R - 11 = CFCl₃ ; R - 22 = CHF₂Cl R - 12 = CF₂Cl₂(Freon12) R- 134 = C₂H₂F₄Ecofriendly (No clorine)
Unsaturated Hydrocarbon (freon)	R - 1(m-1)(n + 1) p n + p + q = 2m C_mH_nF_pCl_q	R-1150 = C₂H₄
Inorganic Compound	R - (700 + Mol Weight)	R-717 = NH_{3 ,} R-744 = CO₂ R-764 = SO_{2 ,} R-729 = Air

SiddhiSomnath · Answer 1 · 2022-03-02T16:23:25+0000

Correct Answer - Option 3 : 729

Explanation:

Nomenclature of refrigerants :

Refrigeration	Designation	Example
Fully Saturated Hydrocarbon compounds (freon)	R - (m-1)(n + 1)p n + p + q = 2m + 2 C_mH_nF_pCl_q	R - 11 = CFCl₃ ; R - 22 = CHF₂Cl R - 12 = CF₂Cl₂(Freon12) R- 134 = C₂H₂F₄Ecofriendly (No clorine)
Unsaturated Hydrocarbon (freon)	R - 1(m-1)(n + 1) p n + p + q = 2m C_mH_nF_pCl_q	R-1150 = C₂H₄
Inorganic Compound	R - (700 + Mol Weight)	R-717 = NH_{3 ,} R-744 = CO₂ R-764 = SO_{2 ,} R-729 = Air

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