EASY
11th CBSE
IMPORTANT
Earn 100

The order of decreasing ionisation enthalpy in alkali metals is
(a)
(b)
(c)
(d)

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Important Questions on The s-Block Elements
EASY
11th CBSE
IMPORTANT
The solubility of metal halides depends on their nature, lattice enthalpy and hydration enthalpy of the individual ions. Amongst fluorides of alkali metals, the lowest solubility of in water is due to

HARD
11th CBSE
IMPORTANT
Amphoteric hydroxides react with both alkalies and acids. Which of the following Group metal hydroxides is soluble in sodium hydroxide?

HARD
11th CBSE
IMPORTANT
In the synthesis of sodium carbonate, the recovery of ammonia is done by treating with . The by-product obtained in this process is:

HARD
11th CBSE
IMPORTANT
When sodium is dissolved in liquid ammonia, a solution of deep blue colour is obtained. The colour of the solution is due to

HARD
11th CBSE
IMPORTANT
By adding gypsum to cement

MEDIUM
11th CBSE
IMPORTANT
Dead burnt plaster is

EASY
11th CBSE
IMPORTANT
Suspension of slaked lime in water is known as

MEDIUM
11th CBSE
IMPORTANT
Which of the following elements does not form hydride by direct heating with dihydrogen?
