When Ammonia is used as a refrigerant in vapour compression cycle?

Related Mcqs:

1. The geometry of ammonia is___________________?

   A. Tetrahedral
   B. Square planner
   C. Trigonal bipyramidal
   D. Trigonal Pyramidal

2. Which of the following will not change the concentration of ammonia at the equilibrium ?

   A. Increase of pressure
   B. Increase of volume
   C. Addition of catalyst
   D. Decrease of temperature

3. Rate expression for ammonia synthesis is___________________?

   A. Kc=x2/(a-x)(b-x)
   B. Kc=x2/v(a-x)
   C. Kc=4×2/(a-2x)2(b-x)
   D. Kc=4x2v2/(a-x)(b-3x)3

4. Catalyst used to speed up the reaction of ammonia synthesis is________________________?

   A. V2O5
   B. V2O5 and Pt
   C. Fe
   D. Pieces of Fe crystals are embedded in fused mixture of MgO Al2O3 and SiO2

5. Hypochlorous acid is used for disinfecting the water it reacts with the dissolved ammonia producing___________________?

   A. NH2Cl
   B. NHCI2
   C. NCI2
   D. all of the above

6. Which of the following is the most suitable catalyst for ammonia synthesis ?

   A. Pt
   B. ZnO + Cr2O3
   C. Fe in fused mixture of Al2O3 + SiQ2 + MgO
   D. All of the above

7. Carboxylic acid reacts with ammonia to form ammonium salts which on heating produces_______________?

   A. CO2
   B. Alkane
   C. Ester
   D. Acidamide

8. Ammonia may be prepared by heating ammonium chloride with_______________?

   A. Water
   B. NaCl
   C. Aqueous sodium hydroxide
   D. H2SO4

9. What is the molecular weight of Ammonia (NH3) ________ ?

   A. 17.031 g/mol
   B. 18.031 g/mol
   C. 19.031 g/mol
   D. 27.033 g/mol

   Submitted by: Rashid Mehmood

10. The mass of 3.2 moles of ammonia (NH3) gas?

    A. 53.4 grams
    B. 54.4 grams
    C. 55.4 grams
    D. 56.4 grams

    Submitted by: Muhammad Ali Kunbhar