Which of the following is capable of absorbing excess moisture from the air?(a) Silica gel(b) Charcoal(c) Salts of calcium or ammonia(d) Activated aluminaI got this question in final exam.This is a very interesting question from Systems and Essentials of Air Conditioning System topic in portion Air Conditioning, Thermal Insulation, Stones & Ferrous Metals of Construction & Building Materials

Which of the following is capable of absorbing excess moisture from th

1.	Which of the following is capable of absorbing excess moisture from the air?(a) Silica gel(b) Charcoal(c) Salts of calcium or ammonia(d) Activated aluminaI got this question in final exam.This is a very interesting question from Systems and Essentials of Air Conditioning System topic in portion Air Conditioning, Thermal Insulation, Stones & Ferrous Metals of Construction & Building Materials
Answer» Right OPTION is (c) SALTS of calcium or ammonia The explanation is: Absorbents like salts of calcium or ammonia are capable of absorbing EXCESS moisture from the air. However, the adsorbents like silica gel and activated alumina allow moisture to STAY only at the surface.

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