In K2Cr2O7 the oxidation number of chromium is____________________?

Related Mcqs:

1. Which compound form benzoic acid on oxidation with acidified KMnO4 or K2Cr2O7 ?

   A. Toluene B. Ethyl benzene C. n-propyl benzene D. All...

2. K2Cr2O7/H2SO4 generate____________________?

   A. Oxygen B. Hydrogen C. Nascent oxygen[O] D. Nascent hydrogen[H]...

3. Which has maximum oxidation number ?

   A. N B. Cr C. S D. Mn...

4. Decrease in oxidation number is called__________________?

   A. oxidation B. reduction C. oxidation-reduction D. all of above represent same entity...

5. The oxidation number of central metal atom in [Ni(CO)4] is_________________?

   A. 0 B. 2 C. 4 D. 6...

6. The oxidation state of transition elements is usually _______________________?

   A. variable B. constant C. single D. infinite...

7. Oxidation state of an atom represents____________________?

   A. Number of electrons gained B. Number of electrons lost C. Apparent charge in compound D. Its vacancies...

8. In which compound of Xenon the oxidation state of Xenon is + 6?

   A. XeF4 B. XeOF4 C. XeOF2 D. Na4XeO6...

9. Incomplete oxidation of methane in the limited supply of air forms ?

   A. CO2 and H2O B. CH3OH C. CO + H2 + C D. CO + H2O + C...

10. The oxidation state of cu which are expected to be diamagnetic

    A. Cu+2 B. Cu+4 C. Cu+1 D. Cu+3 Submitted by: Siddiqullah wazir...