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 ____________________?

Related Mcqs:

1. A butane isomerisation process produces 70 k.mole/hr of pure iso-butane. A purge stream removed continuously, contains 85% n-butane and 15% impurity (mole%). The feed stream is n-butane containing 1% impurity (mole%). The flow rate of the purge stream will be_________________?

   A. 3 kmole/hr B. 4 kmole/hr C. 5 kmole/hr D. 6 kmole/hr...

2. Under conditions of equal reduced pressure and equal reduced temperature, substances are said to be in the ‘corresponding states’. At equal reduced conditions i.e., at the corresponding state, the ____________ of different gases are nearly the same?

   A. Compressibility B. Molecular weight C. Humidity D. None of these...

3. 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...

4. Gases having same reduced temperatures and reduced pressures_________________?

   A. Deviate from ideal gas behaviour to the same degree B. Have nearly the same compressibility factor C. Both A. and B. D. Neither A. nor B....

5. pH value of a solution containing 1 gm of hydrogen ion per litre will be ____________________?

   A. 0 B. 1 C. 7 D. 10...

6. Pure oxide refractories are generally monocrystalline in nature and are self bonded ______________ bricks are generally used as moderator in nuclear reactors?

   A. Beryllia B. Carborundum C. Corundum D. Thoria...

7. 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...

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

   A. 56 B. 100 C. 144 D. 1000...

9. Sometimes, in chemical processes, a part of the outlet stream is rejected as waste in order to keep the impurity level in the system within limits. This phenomenon is termed as the_________________?

   A. Recycling B. Purging C. Bypassing D. Recirculation...

10. A bypass stream in a chemical process is useful, because it___________________?

    A. Facilitates better control of the process B. Improves the conversion C. Increases the yield of products D. None of these...