S-Block Element...

Cs⁺ ions impart violet to Bunsen flame. This is due to the fact that the emitted radiations are of

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

An alkaline earth metal (M) gives a salt with chlorine, which is soluble in water at room temperature. It also forms an insoluble sulphate whose mixture with a sulphide of a transition metal is called `lithopone'-a white pigment. Metal M is-

The reaction of an element A with water produces combustible gas B and an aqueous solution of C. When another substance D reacts with this solution C also produces the same gas B.D also produces the same gas even on reaction with dilute H₂SO₄ at room temperature. Element A imparts golden yellow colour to Bunsen flame. Then A,B,C and D may be identified as

The hydroxide of alkaline earth metal, which has the lowest value of solubility product (K_sp) at normal temperature (25°C) is-

(Yellow ppt) T  X  Y. (Yellow ppt) + Z­ (pungent smellinggas)

If X gives green flame test. Then, X is :

Which of the following carbonate of alkali metals has the least thermal stability ?

The `milk of magnesia' used as an antacid is chemicaly -

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 LiF in water is due to

The pair of compounds, which cannot exist together in a solution is-

The formula of soda ash is

The hydration energy of Mg²⁺ is -?

The golden yellow colour associated with NaCl to Bunsen flame can be explained on the basis of -

Solution of sodium metal in liquid ammonia is a strong reducing agent due to presence of -?

The order of solubility of lithium halides in non polar solvents follows the order.

The salt which finds uses in qualitative inorganic analysis is -?

Fire extinguishers contain -?

CsBr₃ contains -?

Alkali metals reacts with water vigorously to form hydroxides and dihydrogen. Which of the following alkali metals reacts with water least vigorously?

The correct order of second ionisation potentials (IP) of Ca, Ba and K is -

EDTA is used in the estimation of - ?

aq. NaOH + P₄ (white) → PH₃ + X; compound X is

The correct order of solubility is -?

The complex formation tendency of alkaline earth metals decreases down the group because -

The alkaline earth metals, which do not impart any colour to Bunsen flame are -

The alkali metals are low melting. Which of the following alkali metal is expected to melt if the room temperature rises to 30°C?

A metal M readily forms water soluble sulphate, and water insoluble hydroxide M(OH)₂. Its oxide MO is amphoteric, hard and having high melting point. The alkaline earth metal M must be -

When K₂O is added to water, the solution becomes basic in nature because it contains a significant concentration of -

If A is the metallic salt, then the white ppt. of D must be of -?

(Mily Cloud) 

The chemical formulae of A and B are -?