|
Complete the following chemical reactions
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|
1
|
2781
|
December 20, 2016
|
|
Give ion electron equations for the following reactions
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|
1
|
2127
|
December 20, 2016
|
|
Scientist of UK have invented the cars working on hydrogen fuel cells instead of petrol engines
|
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1
|
764
|
December 20, 2016
|
|
What are the advantages in using hydrogen as a fuel?
|
|
0
|
1975
|
December 20, 2016
|
|
Calculate the volume strength of a 3% solution of $H_{ 2 }$$O_{ 2 }$
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|
0
|
1801
|
December 20, 2016
|
|
Basic principle of hydrogen economy is transportation and storage of energy in the form of liquid or gaseous hydrogen
|
|
1
|
2381
|
December 20, 2016
|
|
Statues coated with white lead on long exposure to atmosphere
|
|
1
|
722
|
December 20, 2016
|
|
Why can dilute solutions of hydrogen peroxide not be concentrated by heating
|
|
1
|
2438
|
December 20, 2016
|
|
What do you expect the nature of hydrides is
|
|
1
|
1504
|
December 20, 2016
|
|
Describe the usefulness of water in biosphere and biological systems
|
|
0
|
2041
|
December 20, 2016
|
|
What properties of water make it useful as a solvent? What type of compounds can it
|
|
1
|
5041
|
December 20, 2016
|
|
How do you expect the metallic hydrides to be useful for hydrogen storage? Explain
|
|
0
|
1724
|
December 20, 2016
|
|
Among $NH _{3 }$, $H _{ 2 }O$ and HF
|
|
1
|
593
|
December 20, 2016
|
|
What characteristics do you expect from an electron-deficient hydride with respect to its structure and chemical reactions?
|
|
0
|
3832
|
December 20, 2016
|
|
What do you understand by the term 'syn gas'?
|
|
1
|
1095
|
December 20, 2016
|
|
Describe the industrial applications of hydrogen dependent on
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|
1
|
2905
|
December 20, 2016
|
|
Atomic hydrogen combines with almost all elements but molecular hydrogen does not. Explain
|
|
0
|
636
|
December 20, 2016
|
|
Hydrogen generally forms covalent compounds. Give reason?
|
|
0
|
3490
|
December 20, 2016
|
|
How can you show that ${{H}_{2}}$${{O}_{2}}$ works both as oxidising and reducing agent by giving examples
|
|
0
|
652
|
August 13, 2016
|
|
Complete the following and classify the reactions into:
|
|
1
|
712
|
August 13, 2016
|
|
Compare structures of ${{H}_{2}}$0 and ${{H}_{2}}$${{O}_{2}}$?
|
|
0
|
560
|
August 13, 2016
|
|
Calculate the volume of 10 volumes of ${{H}_{2}}$${{O}_{2}}$solution that will react with 200 ml of 2N KMn${{O}_{4}}$in acidic medium?
|
|
0
|
576
|
August 13, 2016
|
|
Complete the following:
|
|
1
|
579
|
August 13, 2016
|
|
Find the volume strength of 1.6 N ${{H}_{2}}$${{O}_{2}}$ solution?
|
|
0
|
1968
|
August 13, 2016
|
|
Compare the structure of ${{H}_{2}}$O and ${{H}_{2}}$${{O}_{2}}$
|
|
0
|
566
|
August 13, 2016
|
|
Write reactions showing:
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|
1
|
542
|
August 13, 2016
|
|
Explain the mechanism of bleaching action of ${{H}_{2}}$${{O}_{2}}$
|
|
1
|
704
|
August 13, 2016
|
|
Explain why ${{H}_{2}}$${{O}_{2}}$ cannot be stored for a long period?
|
|
0
|
573
|
August 13, 2016
|
|
Find the volume strength of 2N ${{H}_{2}}$${{O}_{2}}$ solution
|
|
0
|
520
|
August 13, 2016
|
|
Anhydrous Ba${{O}_{2}}$ is not used for preparing ${{H}_{2}}$${{O}_{2}}$. Why?
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|
0
|
562
|
August 13, 2016
|