CBSE Class 11 Chemistry The S Block Elements Worksheet Set D

The S Block Elements MCQ Questions with Answers Class 11 Chemistry

Question- The metals A and B form oxide but B also forms nitride when both burn in air. The A and B are

(a) Cs, K

(b) Mg, Ca

(c) Li, Na

(d) K, Mg

Answer-(d)

Question- Calcitonin and parathyroid hormone regulate concentration of which of the following element in plasma?

(a) Calcium

(b) Magnesium

(c) Sodium

(d) Potassium

Answer-(a)

Question- Arrange the following compounds in order of increasing solubility
(i) MgF₂ (ii) CaF₂,
(iii) BaF₂

(a) (i) < (ii) < (iii)

(b) (ii) < (i) < (iii)

(c) (ii) < (iii) < (ii)

(d) (iii) < (ii) < (i)

Answer-(b)

Question- Which gas is released when CaCO3 reacts with dilute HCl?

(a) H₂

(b) CO₂

(c) O₂

(d) Cl₂

Answer-(b)

Question- The oxidation state shown by alkaline earth metals is

(a) +2

(b) +1, +2

(c) –2

(d) –1, –2

Answer-(a)

Question- In which of the following the hydration energy is higher than the lattice energy?

(a) MgSO₄

(b) RaSO₄

(c) SrSO4

(d) BaSO₄

Answer-(a)

Question- Which one of the following is the most soluble in water?

(a) Mg(OH)₂

(b) Sr(OH)₂

(c) Ca(OH)₂

(d) Ba(OH)₂

Answer-(d)

Question- Of the metals Be, Mg, Ca and Sr of group 2 A. In the periodic table the least ionic chloride would be formed by

(a) Be

(b) Mg

(c) Ca

(d) Sr

Answer-(a)

Question- The order of solubility of sulphates of alkaline earth metals in water is

(a) Be > Mg > Ca > Sr > Ba

(b) Mg > Be >> Ba > Ca > Sr

(c) Be > Ca > Mg > Ba >> Sr

(d) Mg > Ca > Ba >> Be > Sr

Answer-(a)

Question- The solubilities of carbonates decrease down the magnesium group due to a decrease in

(a) hydration energies of cations

(b) inter-ionic attraction

(c) entropy of solution formation

(d) lattice energies of solids

Answer-(a)

Question-  The correct order of increasing thermal stability of K2CO3,MgCO3, CaCO3 and BeCO3 is

(a) BeCO₃< MgCO₃ < CaCO₃ < K₂CO₃

(b) MgCO3 < BeCO₃ < CaCO₃ < K₂CO₃

(c) K₂CO₃ < MgCO₃ < CaCO₃ < BeCO₃

(d) BeCO₃ < MgCO₃ < K₂CO₃ < CaCO₃

Answer-(a)

Question- Alkaline earth metals are

(a) reducing agent

(b) amphoteric

(c) dehydrating agent

(d) oxidizing agent

Answer-(a)

Question- Which of the following alkaline earth metal sulphates has hydration enthalpy higher than the lattice enthalpy?

(a) CaSO₄

(b) BeSO₄

(c) BaSO₄

(d) SrSO₄

Answer-(b)

Question- Which of the following is the best method for preparation of BeF₂?

(a) Reaction of Be with F₂

(b) Thermal decomposition of (NH₄)2BeF₄

(c) Reaction of Be with HF

(d) All of the above are equally effective

Answer-(b)

Question- Beryllium shows diagonal relationship with aluminium.Which of the following similarity is incorrect ?

(a) Be forms beryllates and Al forms aluminates

(b) Be(OH)₂ like Al(OH)₃ is basic.

(c) Be like Al is rendered passive by HNO₃ .

(d) Be₂C like Al4C₃ yields methane on hydrolysis.

Answer-(b)

Question- Setting of cement is an

(a) exothermic reaction

(b) endothermic reaction

(c) neither endothermic nor exothermic

(d) example of neutralisation reaction

Answer-(a)

Question- The substance not likely to contain CaCO₃ is

(a) gypsum

(b) sea shells

(c) dolomite

(d) a marble statue

Answer-(a)

Question- Mortar is a mixture of

(a) CaCO₃, sand and water

(b) slaked lime and water

(c) slaked lime, sand and water

(d) CaCO₃ and CaO

Answer-(c)

71. Which of the following alkaline earth metal hydroxides is amphoteric in character

(a) Be(OH)₂

(b) Ca(OH)₂

(c) Sr(OH)₂

(d) Ba(OH)₂

Answer-(a)

Question- Which of the following metal is found in green colouring pigment chlorophyll of plants?

(a) Fe

(b) Mg

(c) Na

(d) Al

Answer-(b)

More Question

Instructions:

1. All questions are compulsory.

2. Please give the explanation for the answer where applicable.

Q1 - Lithium has highest ionization energy as compared to other element same group. Why? 

Q2 - Name the strongest reducing agent alkali metal? 

Q3 - Write the chemical formula of gypsum? 

Q4 - Why alkali metals are difficult to reduce?

Q5 - Why the alkali metals cannot be isolated by electrolysis of the aqueous solution of their salts? 

Q6 - Sodium bicarbonate is prepared by Solvay-Ammonia process but Potassium bicarbonate can not. why?

Q7 - What happens when

i) Sodium hydrogen carbonate is heated.

ii) Carbon dioxide is passed through ammonical brine solution.

iii) Chlorine reacts with slaked lime. 

Q8 - Compare alkali metals and alkaline earth metals on the basis of :-

i) Ionization enthalpy.

ii) Basicity of oxides.

iii) Solubility of hydroxides.

Q9 - How the chemistry of alkali metals differs from alkaline earth metals? Explain. 

Please refer to the link below for CBSE Class 11 Chemistry The S Block Elements Worksheet Set D