|
Justify the position of hydrogen in the periodic table on the basis of its electronic configuration?
|
|
0
|
4160
|
August 12, 2016
|
|
Describe the bulk preparation of dihydrogen by electrolytic method. What is the role of an electrolyte in this process
|
|
0
|
2487
|
August 12, 2016
|
|
How can the production of dihydrogen, obtained from 'coal gasification' be increased?
|
|
0
|
3954
|
August 12, 2016
|
|
Give two advantages of using hydrogen as a fuel over gasoline
|
|
0
|
951
|
August 12, 2016
|
|
Does hydrogen support combustion?
|
|
0
|
602
|
August 12, 2016
|
|
Name the element which when reacted with dil. ${{H}_{2}}S{{O}_{4}}$ gives pure hydrogen
|
|
0
|
501
|
August 12, 2016
|
|
Concentrated ${{H}_{2}}S{{O}_{4}}$ cannot be used to dry moist ${{H}_{2}}$ gas. Why?
|
|
0
|
362
|
August 12, 2016
|
|
Name one example of a reaction in which hydrogen acts as an oxidizing agent
|
|
0
|
2225
|
August 12, 2016
|
|
How will you show that hydrogen is an electropositive element?
|
|
0
|
679
|
August 12, 2016
|
|
Which isotope of hydrogen contains equal number of proton and neutron?
|
|
0
|
959
|
August 12, 2016
|
|
Why hydrogen behaves both as a halogen and as an alkali metal?
|
|
0
|
521
|
August 12, 2016
|
|
Out of the following metals which can be used to liberate ${{H}_{2}}$ gas on reaction with dil. hydrochloric acid?
|
|
1
|
375
|
August 12, 2016
|
|
Which gaseous compound on treatment with dihydrogen produces methanol?
|
|
0
|
1340
|
August 12, 2016
|
|
What are the constituents of water gas?
|
|
0
|
1720
|
August 12, 2016
|
|
Why is dihydrogen gas not preferred in baloons?
|
|
0
|
497
|
August 12, 2016
|
|
How does the atomic hydrogen or oxy-hydrogen torch function for cutting and welding purposes?Explain
|
|
0
|
2920
|
August 12, 2016
|
|
Complete the following reactions :
|
|
1
|
2866
|
August 12, 2016
|
|
Why does hydrogen occur in diatomic form rather than in a monoatomic form under normal conditions?
|
|
0
|
5979
|
August 12, 2016
|
|
Write the skeleton equations for the following chemical reactions and balance them by oxidation number method
|
|
1
|
4102
|
August 12, 2016
|
|
Balance the following redox equations by half reaction method:
|
|
1
|
5690
|
August 12, 2016
|
|
Balance the following in acidic medium by ion electron method:
|
|
1
|
2748
|
August 12, 2016
|
|
Balance in acidic medium
|
|
1
|
1950
|
August 12, 2016
|
|
Balance the following in basic medium:
|
|
1
|
1107
|
August 12, 2016
|
|
Assign oxidation number to the underlined elements in each of the following species :
|
|
1
|
1653
|
August 12, 2016
|
|
Why does the following reaction occur?
|
|
1
|
869
|
August 12, 2016
|
|
For the Galvanic cell reaction
|
|
1
|
656
|
August 12, 2016
|
|
Balance in Basic Medium
|
|
1
|
412
|
August 12, 2016
|
|
Find oxidation number of:
|
|
1
|
3687
|
August 12, 2016
|
|
What are the oxidation number of the underlined elements in each of the following and how do you rationalise your results?
|
|
1
|
2353
|
August 12, 2016
|
|
Consider the reactions :
|
|
1
|
461
|
August 12, 2016
|