_____________ kg of CaC03 on heating will give 56 kg of CaO?

Related Mcqs:

1. On mixing 56 gm of CaO with 63 gm of HNO3, the amount of Ca(NO3)2 formed is ______________ gm?

   A. 82
   B. 164
   C. 41
   D. 8.2

2. Refractories subjected to alternate cycles of heating & cooling are liable to loose their resistance to__________________?

   A. Thermal spalling
   B. Slag attack
   C. Fusion under load
   D. CO attack

3. A metal oxide is reduced by heating it in a stream of hydrogen. After complete reduction, it is found that 3.15 gm of the oxide has yielded 1.05 gm of the metal. It may be inferred that the ____________________?

   A. Atomic weight of the metal is 4
   B. Equivalent weight of the metal is 4
   C. Atomic weight of the metal is 2
   D. Equivalent weight of the metal is 8

4. In panel test for spalling resistance, the average face temperature of panel assembly is maintained at _____________ °C for 24 hours?

   A. 700
   B. 1000
   C. 1600
   D. 2000

5. The amount of Zn (atomic weight = 65) required to form 224 c.c. of H2 at N.T.P. on treatment with dilute H2SO4will be _____________ gm?

   A. 0.065
   B. 0.65
   C. 6.5
   D. 65

6. Weight of 56 litres of ammonia at N.T.P. is _____________ gm?

   A. 2.5
   B. 42.5
   C. 56
   D. 2800

7. Raoult’s law is obeyed by a _____________ solution?

   A. Saturated
   B. Molar
   C. Normal
   D. None of these

8. _____________ fuels require the maximum percentage of ‘excess air’ for complete combustion ?

   A. Solid
   B. Liquid
   C. Gaseous
   D. Nuclear

9. 500 c.c. each of hydrogen at 700 mm Hg pressure and oxygen at 600 mm Hg pressure are put together in a vessel of 1 litre capacity. The final pressure of the gas mixture will be _____________ mm Hg?

   A. 650
   B. 700
   C. 600
   D. 375

10. The atomic weight of helium is 4 times that of hydrogen. Its diffusion rate as compared to hydrogen will be _____________ times?

    A. 1/2
    B. 4
    C. √2
    D. 1/4