|
How is dihydrogen obtained from
|
|
1
|
1840
|
December 20, 2016
|
|
How does the atomic hydrogen or oxy-hydrogen torch function for cutting and welding purposes? Explain
|
|
0
|
1596
|
December 20, 2016
|
|
What happens when magnesium is burnt in air
|
|
1
|
6183
|
December 20, 2016
|
|
Present a comparative account of the alkali and alkaline earth with respect to the following characteristics
|
|
1
|
2406
|
December 20, 2016
|
|
Compare alkali metals and alkaline earth metals with respect to
|
|
1
|
2261
|
December 20, 2016
|
|
The hydroxides and carbonates of sodium and potassium
|
|
1
|
1823
|
December 20, 2016
|
|
What happens when magnesium
|
|
1
|
684
|
December 20, 2016
|
|
Complete the following equations for the reaction between
|
|
0
|
1181
|
December 20, 2016
|
|
What happens when magnesium reacts with
|
|
1
|
565
|
December 20, 2016
|
|
Explain why can an alkali and alkaline earth metals not be obtained by chemical reduction methods?
|
|
0
|
784
|
December 20, 2016
|
|
Name the groups which constitute s-block elements
|
|
1
|
1307
|
December 20, 2016
|
|
Mention the various sources of sodium chloride and explain the preparation of sodium chloride from sea-water and salt mines
|
|
0
|
845
|
December 20, 2016
|
|
What happens when sodium hydrogen carbonate is precipitated?
|
|
1
|
1764
|
December 20, 2016
|
|
Which colour is imparted to flame by sodium?
|
|
1
|
3493
|
December 20, 2016
|
|
Ions of an element of group 1 participate in the transmission of nerve signals
|
|
1
|
1866
|
December 20, 2016
|
|
State as to why
|
|
1
|
5347
|
December 20, 2016
|
|
What happens when sodium metal is dropped in water?
|
|
1
|
1056
|
December 20, 2016
|
|
Identify (A), (B), (C) and (D) and give their chemical formulae
|
|
1
|
1103
|
December 20, 2016
|
|
How do you account for the strong reducing power of lithium
|
|
1
|
3664
|
December 20, 2016
|
|
Comment on each of the following observations
|
|
1
|
2299
|
December 20, 2016
|
|
Complete the following reactions given
|
|
1
|
757
|
December 20, 2016
|
|
All compounds of alkali metals are easily soluble in water
|
|
1
|
2615
|
December 20, 2016
|
|
Write the formulae of
|
|
1
|
636
|
December 20, 2016
|
|
When alkali metals are heated in excess of air. What is the nature of oxides formed?
|
|
1
|
2302
|
August 13, 2016
|
|
Write equation for the preparation of;
|
|
1
|
4470
|
August 13, 2016
|
|
Describe the importance of the following:
|
|
1
|
957
|
August 13, 2016
|
|
Describe two important uses of each of the following:
|
|
1
|
2503
|
August 13, 2016
|
|
Give reasons for the following :
|
|
1
|
2228
|
August 13, 2016
|
|
Write two uses of plaster of paris
|
|
1
|
3667
|
August 13, 2016
|
|
What happens when :
|
|
1
|
525
|
August 13, 2016
|