List of top Chemistry Questions on The S-Block Elements

Observe the following unbalanced reactions \[ KO_2 \xrightarrow{\;HOH\;} X + Y\uparrow + KOH \] \[ KMnO_4 \xrightarrow[\text{basic medium}]{\;X\;} Y + Z + KOH + H_2O \] Y and Z are respectively
Given below are two statements Statement-I: The solubility of \(\mathrm{CaCl_2}\) and \(\mathrm{MgCl_2}\) in water is more than that of \(\mathrm{NaCl}\). Statement-II: \(\mathrm{Ca(NO_3)_2}\) on heating gives three products. The correct answer is
The chemical prepared by Solvay's process is \(X\). The chemical prepared by Castner-Kellner process is \(Y\). \(X\) and \(Y\) are respectively
Which of the following is not the raw material in Solvay process?
The similarities between beryllium and aluminium are
• [I.] The chlorides of both have Cl bridged structure in vapour phase
• [II.] Both have strong tendency to form complexes
• [III.] Maximum covalency of both is 6 The correct answer is
Given below are two statements: Statement-I: Solubility of alkaline earth metal hydroxides in water increases down the group. Statement-II: Solubility of alkaline earth metal sulphates in water increases down the group.
Observe the following sequence of reactions and identify the correct statements about \(W\), \(X\) and \(Z\): \[ Ca + O_2 \rightarrow X \xrightarrow{H_2O} Y \xrightarrow{CO_2} Z \xrightarrow{-H_2O} Z \xrightarrow{H_2O/\text{ excess }CO_2} W \] I. W is soluble in water II. Z is used as mild abrasive in toothpaste III. X is slaked lime
When lithium nitrate and calcium nitrate are heated in separate test tubes, which of the following observations would be identical for both?
Which of the following is NOT correctly matched with its common name?
The pair of elements which do NOT form superoxides in excess oxygen is:
Which of the following is not the correct statement about group 1 elements?
Which of the following statements are correct? I. Liquid sodium metal is used as coolant in fast breeder nuclear reactor II. LiCl is deliquescent III. LiF and CsI have low solubility in water
Identify the incorrect statement from the following:
Which of the given statements are not correct for Li and Mg?
I. Both Li and Mg mainly give monoxides only II. Both Li and Mg react slowly with water III. Both Li and Mg give flame test IV. On combustion in air Mg forms \(Mg_{3}N_{2}\) but Li does not form \(Li_{3}N\)
Which one of the carbonates is unstable in air and is kept in $CO_{2}$ atmosphere to avoid decomposition?
Which of the following alkali metals has the lowest melting point?
Match the elements in List-1 with their characteristic flame colors in List-2: [h] {|l|l|} List -1 (Element) & List -2 (Flame Color)
(A) Na & (I) Apple green
(B) Ca & (II) yellow
(C) Ba & (III) Brick red
(D) Li & (IV) Crimson red
Choose the incorrect statement:
The mineral that contains both magnesium and calcium is:
The order of negative standard potential values of $\text{Li}, \text{Na}, \text{K}$ is
Which of the following statements is not correct?
Identify the incorrect order against the property given in brackets
How many of the following metals give oxides and nitrides when burnt in air? Be, Na, Mg, Ba, Sr, Li, K
By using which process, sodium carbonate is generally prepared?
The incorrect statement about Castner-Kellner cell process is