1 |
Which is more basic |
RbOH
NaOH
KOH
Li OH
|
2 |
Which is more basic |
RbOH
NaOH
KOH
Li OH
|
3 |
Which one of the following has lowest first ionization energy. |
Li
Na
Rb
Cs
|
4 |
Alkali metal whose carbonate is is relatively less stable and decomposes giving its oxides is. |
Li
Ba
K
Rb
|
5 |
Which one of the following pairs of metal reactive directly with nitrogen |
Na and Mg
Li and Mg
Mg and Ca
Li and Be
|
6 |
Which hydroxide decomposes on heating. |
LiOH
NaOH
KOH
CaOH
|
7 |
Which meal is least reactive |
Li
NaOH
K
Pb
|
8 |
Which element is present in chlorophyll |
Ca
Mg
K
Be
|
9 |
In which ore carbon is present |
Magnesite
Epsom salt
Barite
Sylvite
|
10 |
Ca Mg3 (SiO3)2 is the composition of. |
Dolomite
Gypsum
Calcite
Asbestos
|
11 |
Down's cell is used to prepare. |
Sodium carbonate
Sodium bicarbonate
sodium metal
Sodium hydroxide
|
12 |
The ore CaSO4.2H2O has the general name. |
Gypsum
dolomite
Calcite
Epsom salt
|
13 |
Chile saltpeter has the chemical formula |
NaNO3
KNO3
Na2B4O7
Na2CO3.H2O
|
14 |
The element cesium bears resemblance with |
Ca
Cr
Both of the above
None of the above
|
15 |
Which of the following sulphates is not soluble in water. |
Sodium sulphate
Potassium sulphate
Zinc sulphate
Barium Sulphate
|
16 |
Which one of the following is not an alkali metal. |
Francium
Cesium
Rubidium
Radium
|
17 |
Which ion will have the maximum value of heat of hydration. |
Na+
Ca+
Ba+2
Mg+2
|