Law of mass action was proposed by Goldberg and Peter Waage in _________?

Related Mcqs:

1. Mass spectrometer is used to determine Mass number of isotopes and___________________?

   A. Atomic number
   B. Relative abundance
   C. Electronic configuration
   D. All of the above

2. A sample of an iron and oxygen ore has a mass of 35.8 grams. The iron in the compound has a mass of 27.9 grams. What is the percent iron in the ore?

   A. 74% Fe
   B. 75% Fe
   C. 77% Fe
   D. 78% Fe

   Submitted by: Muhammad Ali Kunbhar

3. Which element was not known when Mendeleev proposed his classification ?

   A. Hydrogen
   B. Sodium
   C. Copper
   D. Germanium

4. The main product of bacterial action is_________________?

   A. Nox
   B. NO2
   C. N2O3
   D. NO

5. Any process of chemical decay of metals due to the action of surrounding medium is called__________________?

   A. activation
   B. enameling
   C. corrosion
   D. coating

6. Bromine can be liberated from KBr solution by the action of _______________?

   A. Iodine solution
   B. Chlorine
   C. NaCl
   D. Ki

7. Ozone is formed in the upper layer of the atmosphere from oxygen by action of:____________?

   A. Free radicals
   B. Cosmic rays
   C. Nitrogen oxides 
   D. UV -rays

   Submitted by: Said wali shah

8. The number of peaks obtained in mass spectrometry shows____________________?

   A. Relative abundance
   B. Average mass of element
   C. Number of isotopes
   D. Relative isotopic mass

9. The mass of P4O10 that will be obtained from the reaction of 1.33 gram of P4 and 5.07 of oxygen is___________?

   A. 2.05 gram
   B. 3.05 gram
   C. 4.05 gram
   D. 5.05 gram

   Submitted by: Muhammad Ali Kunbhar

10. The maximum mass is present in 1dm3 for the following gas at STP.

    A. C₃H₈
    B. CO₂
    C. CO
    D. CS₂

    Submitted by: Aamir khan Hullio