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Chemistry Class 12 Chapter 2
S-Block Elements
Test 8
1.
The solubility of alkaline earth metal?
Increases down the group
Decrease across the period
Remain same
Decreases down the group
2.
The basic character of alkali metals?
Decreases down the group
First increases and then decreases
Increases down the group
Remain same
3.
The only alkaline earth metal which forms peroxide is?
Barium
Magnesium
Calcium
None of these
4.
Metal which does not reacts with water even at red-hot temperature is?
Barium
Calcium
Beryllium
Magnesium
5.
The tendency of alkaline earth metals as compared to the alkali metals to form alkaline solution is?
Relatively less
Both are same
None of these
Relatively greater
6.
A suspension of magnesium hydroxide is called?
None of these
Milk of magnesia
Lime water
Soda water
7.
Due to hydrolyses of carbonate ion the solution of sodium carbonate is?
Acidic
Amphoteric
All of these
Basic
8.
Alkali metals dissolve in water to form?
Strong acidic solution
To give neutralization reactions
All of these
Strong alkaline solution
9.
The increase in solubility of alkaline earth metals is due to?
High lattice energy
High electron affinity
Low lattice energy
Low ionization energy
10.
Magnesium reacts with steam to liberate?
Water gas
Magnesite
Oxygen
Hydrogen gas
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