|
Complete the following chemical reactions
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|
1
|
2908
|
December 20, 2016
|
|
Give ion electron equations for the following reactions
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|
1
|
2257
|
December 20, 2016
|
|
Scientist of UK have invented the cars working on hydrogen fuel cells instead of petrol engines
|
|
1
|
827
|
December 20, 2016
|
|
What are the advantages in using hydrogen as a fuel?
|
|
0
|
2070
|
December 20, 2016
|
|
Calculate the volume strength of a 3% solution of $H_{ 2 }$$O_{ 2 }$
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|
0
|
1937
|
December 20, 2016
|
|
Basic principle of hydrogen economy is transportation and storage of energy in the form of liquid or gaseous hydrogen
|
|
1
|
2443
|
December 20, 2016
|
|
Statues coated with white lead on long exposure to atmosphere
|
|
1
|
772
|
December 20, 2016
|
|
Why can dilute solutions of hydrogen peroxide not be concentrated by heating
|
|
1
|
2489
|
December 20, 2016
|
|
What do you expect the nature of hydrides is
|
|
1
|
1542
|
December 20, 2016
|
|
Describe the usefulness of water in biosphere and biological systems
|
|
0
|
2088
|
December 20, 2016
|
|
What properties of water make it useful as a solvent? What type of compounds can it
|
|
1
|
5093
|
December 20, 2016
|
|
How do you expect the metallic hydrides to be useful for hydrogen storage? Explain
|
|
0
|
1773
|
December 20, 2016
|
|
Among $NH _{3 }$, $H _{ 2 }O$ and HF
|
|
1
|
655
|
December 20, 2016
|
|
What characteristics do you expect from an electron-deficient hydride with respect to its structure and chemical reactions?
|
|
0
|
3966
|
December 20, 2016
|
|
What do you understand by the term 'syn gas'?
|
|
1
|
1170
|
December 20, 2016
|
|
Describe the industrial applications of hydrogen dependent on
|
|
1
|
2961
|
December 20, 2016
|
|
Atomic hydrogen combines with almost all elements but molecular hydrogen does not. Explain
|
|
0
|
683
|
December 20, 2016
|
|
Hydrogen generally forms covalent compounds. Give reason?
|
|
0
|
3553
|
December 20, 2016
|
|
How can you show that ${{H}_{2}}$${{O}_{2}}$ works both as oxidising and reducing agent by giving examples
|
|
0
|
701
|
August 13, 2016
|
|
Complete the following and classify the reactions into:
|
|
1
|
766
|
August 13, 2016
|
|
Compare structures of ${{H}_{2}}$0 and ${{H}_{2}}$${{O}_{2}}$?
|
|
0
|
600
|
August 13, 2016
|
|
Calculate the volume of 10 volumes of ${{H}_{2}}$${{O}_{2}}$solution that will react with 200 ml of 2N KMn${{O}_{4}}$in acidic medium?
|
|
0
|
621
|
August 13, 2016
|
|
Complete the following:
|
|
1
|
612
|
August 13, 2016
|
|
Find the volume strength of 1.6 N ${{H}_{2}}$${{O}_{2}}$ solution?
|
|
0
|
2095
|
August 13, 2016
|
|
Compare the structure of ${{H}_{2}}$O and ${{H}_{2}}$${{O}_{2}}$
|
|
0
|
629
|
August 13, 2016
|
|
Write reactions showing:
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|
1
|
589
|
August 13, 2016
|
|
Explain the mechanism of bleaching action of ${{H}_{2}}$${{O}_{2}}$
|
|
1
|
783
|
August 13, 2016
|
|
Explain why ${{H}_{2}}$${{O}_{2}}$ cannot be stored for a long period?
|
|
0
|
633
|
August 13, 2016
|
|
Find the volume strength of 2N ${{H}_{2}}$${{O}_{2}}$ solution
|
|
0
|
568
|
August 13, 2016
|
|
Anhydrous Ba${{O}_{2}}$ is not used for preparing ${{H}_{2}}$${{O}_{2}}$. Why?
|
|
0
|
625
|
August 13, 2016
|