|
What type of elements form interstitial hydrides?
|
|
0
|
2371
|
August 13, 2016
|
|
What is hydrolith ? How is it prepared?
|
|
0
|
4491
|
August 13, 2016
|
|
What happens when chloroform is treated with heavy water in presence of an alkali?
|
|
0
|
895
|
August 13, 2016
|
|
Why is sodium less soluble in heavy water than in ordinary water?
|
|
0
|
526
|
August 13, 2016
|
|
Give an example where water acts as an oxidising agent
|
|
0
|
1669
|
August 13, 2016
|
|
How is heavy water produced from ordinary water?
|
|
0
|
911
|
August 13, 2016
|
|
What is the cause of temporary hardness of water?
|
|
0
|
706
|
August 13, 2016
|
|
Explain why water is either acidified or made alkaline before electrolysis it to get hydrogen?
|
|
0
|
570
|
August 13, 2016
|
|
Name the compounds which retard the decomposition of ${{H}_{2}}$${{O}_{2}}$
|
|
0
|
565
|
August 13, 2016
|
|
Give one example of a zeolite used in softening of hard water
|
|
0
|
871
|
August 13, 2016
|
|
Arrange ${{H}_{2}}$0, ${{H}_{2}}$S, ${{H}_{2}}$Se, ${{H}_{2}}$Te in the decreasing order of boiling point
|
|
0
|
376
|
August 13, 2016
|
|
What is the importance of heavy water in nuclear : power generation?
|
|
0
|
975
|
August 13, 2016
|
|
Name one compound each of hydrogen in which it exists in (i) Positive oxidation state, (ii) Negative oxidation state
|
|
0
|
2849
|
August 13, 2016
|
|
Do you expect different products in solution when aluminium (III) chloride and potassium chloride treated separately with (i) normal water, (ii) acidified water and (iii) alkaline water .Write equations wherever necessary
|
|
0
|
592
|
August 13, 2016
|
|
How can saline hydrides removes traces of water from organic compounds?
|
|
0
|
533
|
August 13, 2016
|
|
Is demineralised or distilled water useful for drinking purposes ? If not how can it be made useful?
|
|
0
|
3236
|
August 13, 2016
|
|
Arrange the following:
|
|
1
|
398
|
August 13, 2016
|
|
Among N${{H}_{3}}$,${{H}_{2}}$O and HF, which would you expect to have highest magnitude of hydrogen bonding and why?
|
|
0
|
441
|
August 13, 2016
|
|
What do you understand by the term:
|
|
1
|
4050
|
August 12, 2016
|
|
Write down two forms of hydrogen which are used as a energy donor
|
|
0
|
526
|
August 12, 2016
|
|
What are typical properties of hydrogen?
|
|
0
|
459
|
August 12, 2016
|
|
Name one example of a reaction in which dihydrogen acts as:
|
|
1
|
1480
|
August 12, 2016
|
|
Complete the following?
|
|
1
|
435
|
August 12, 2016
|
|
Which isotope of Hydrogen
|
|
1
|
481
|
August 12, 2016
|
|
Describe relative stability of different isotopes of Hydrogen. What percentage of each is present in Hydrogen gas?
|
|
0
|
525
|
August 12, 2016
|
|
Discuss the consequences of high enthalpy of H—H bond in terms of chemical reactivity of dihydrogen?
|
|
0
|
2059
|
August 12, 2016
|
|
Write the names of isotopes of Hydrogen. What is the mass ratio of these isotopes?
|
|
0
|
4502
|
August 12, 2016
|
|
Justify the position of hydrogen in the periodic table on the basis of its electronic configuration?
|
|
0
|
4132
|
August 12, 2016
|
|
Describe the bulk preparation of dihydrogen by electrolytic method. What is the role of an electrolyte in this process
|
|
0
|
2466
|
August 12, 2016
|
|
How can the production of dihydrogen, obtained from 'coal gasification' be increased?
|
|
0
|
3926
|
August 12, 2016
|