Which of the following is an exothermic reaction ?

Related Mcqs:

1. For a reaction, X → Y, if the concentration of ‘X’ is tripled; the rate becomes nine times. The order of reaction is__________________?

   A. 0
   B. 1
   C. 2
   D. 3

2. The reaction A + B → C has been conducted in a reactor as shown below. The number of boundaries around which material balance can be written, are_________________?

   A. 1
   B. 6
   C. 3
   D. 4

3. The reaction A + B → C has been conducted in a reactor as shown below. The numbers of balances (material) that can be made around the reactor are________________?

   A. 1
   B. 2
   C. 3
   D. 4

4. If 1.5 moles of oxygen combines with aluminium to form Al2O3, then the weight of aluminium (atomic weight = 27) used in this reaction is __________ gm?

   A. 27
   B. 54
   C. 5.4
   D. 2.7

5. In the reaction, represented by Na2CO3 + HC1 → NaHO3 + NaCl, the equivalent weight of Na2CO3 is________________?

   A. 53
   B. 5.3
   C. 106
   D. 10.6

6. The heat change for the reaction, C(s) + 2S(s) → CS2(l), is 104.2 kJ. It represents the heat of_________________?

   A. Formation
   B. Solution
   C. Combustion
   D. Fusion

7. A ‘limiting reactant’ is the one, which decides the ____________ in the chemical reaction?

   A. Equilibrium constant
   B. Conversion
   C. Rate constant
   D. None of these

8. Enthalpy of formation of NH3 is – 46 kJ/kg mole. The enthalpy change for the gaseous reaction, 2NH3 → N2 + 3H2, is equal to _____________ kJ/kg. mole?

   A. 46
   B. 92
   C. -23
   D. -92

9. ______________ equation gives the effect of temperature on heat of reaction ?

   A. Kirchoff’s
   B. Maxwell’s
   C. Antoine
   D. Kistyakowsky

10. As per Kirchhoff s equation, the heat of reaction is affected by the__________________?

    A. Pressure
    B. Volume
    C. Temperature
    D. Molecularity