JEE PYQ s Block Elements - Chapter-wise Questions with Solutions

About s Block Elements PYQs

s Block Elements has 275 previous year questions in the Quantrex Academy JEE Main & Advanced Chemistry bank. The 220 questions in this list come from JEE Main (134), NTA Abhyas JEE Main (82) and JEE Advanced (4), spanning 2002 to 2026. Each question opens on its own page with the options, the correct answer and the worked solution where available.

JEE s Block Elements PYQs with Solutions

About s Block Elements PYQs

Questions by year (this list)

s Block Elements questions with solutions

First and second ionization enthalpies of lithium are 520 kJ mol ^ -1 and 7297 kJ mol ^ -1 respectively. Energy required to convert 3.5 mg lithium (g) into Li^ 2+ (g) [Li(g) arrow

The correct set that contains all kinds (basic, acidic, amphoteric and neutral) of oxides is:

Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R : Assertion (A) : BeCl _ 2 and MgCl _ 2 produce characteristic flame Reason

Be ( OH ) _ 2 reacts with Sr ( OH ) _ 2 to yield an ionic salt. Choose the incorrect option related to this reaction from the following

In the given reaction cycle X, Y and Z respectively are

The density of alkali metals is in the order

Alkali metal from the following with least melting point is

Mg ( NO _ 3 ) _ 2 . XH _ 2 O and Ba ( NO _ 3 ) _ 2 . YH _ 2 O , represent formula of the crystalline forms of nitrate salts. Sum of X and Y is.......

Match List-I with List-II: List-I List-II A. K I. Thermonuclear reactions B. KCI II. Fertilizer C. KOH III. Sodium potassium pump D. Li IV. Absorbent of CO _ 2

Number of water molecules in washing soda and soda ash respectively are :

Lime reacts exothermally with water to give &lsquo; A &rsquo; which has low solubility in water. Aqueous solution of &lsquo; A &rsquo; is often used for the test of CO _ 2 , a

In the following reaction, the total number of oxygen atoms in X and Y is______ Na _ 2 O + H _ 2 O → 2X Cl _ 2 O _ 7 + H _ 2 O → 2Y

For a good quality cement, the ratio of lime to the total of the oxides of Si, Al and Fe should be as close as to

Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R Assertion A : Sodium is about 30 times as abundant as potassium in the oceans.

Given below are two statements : Statement I : Lithium and Magnesium do not form superoxide Statement II : The ionic radius of Li ^ + is larger than ionic radius of Mg ^ 2 + In

What is the purpose of adding gypsum to cement?

Ion having highest hydration enthalpy among the given alkaline earth metal ions is:

The setting time of Cement is increased by adding

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): Gypsum is used for making fireproof wall boards. Reason

Match List I with List II (A) Slaked lime (I) NaOH (B) Dead burnt plaster (II) Ca ( OH ) _ 2 (C) Caustic soda (III) Na _ 2 CO _ 3 · 10 H _ 2 O (D) Washing soda (IV) CaSO _ 4

Choose the correct statement(s): A. Beryllium oxide is purely acidic in nature. B. Beryllium carbonate is kept in the atmosphere of CO _ 2 . C. Beryllium sulphate is readily

The element playing significant role in neuromuscular function and interneuronal transmission is :

The number of alkali metal(s), from Li, K, Cs, Rb having ionization enthalpy greater than 400kJ mol ^ - 1 and forming stable super oxide is

Chlorides of which metal are soluble in organic solvents:

Which of the following reaction is correct?

The alkaline earth metal sulphate(s) which are readily soluble in water is/are: (A) BeSO _ 4 (B) MgSO _ 4 (C) CaSO _ 4 (D) SrSO _ 4 (E) BaSO _ 4 Choose the correct answer from the

Lithium aluminium hydride can be prepared from the reaction of

On heating, LiNO _ 3 gives how many compounds among the following? Li _ 2 O, N _ 2 , O _ 2 , LiNO _ 2 , NO _ 2

The magnetic behaviour of Li _ 2 O , Na _ 2 O _ 2 and KO _ 2 , respectively, are

The correct order of hydration enthalpies is (A) K ^ + (B) Rb ^ + (C) Mg ^ 2 + (D) Cs ^ + (E) Ca ^ 2 + Choose the correct answer from the options given below:

Match List I with List II List I List II A. Cobalt catalyst I. ( H _ 2 + Cl _ 2 ) production B. Syngas II. Water gas production C. Nickel catalyst III. Coal gasification D. Brine

Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R Assertion A:- The alkali metals and their salts impart characteristic colour

Which one among the following metals is the weakest reducing agent?

Which of the following represents the correct order of metallic character of the given elements?

Match List I with List II List I List II Elements Colour imparted to the flame A K I Brick Red B Ca II Violet C Sr III Apple Green D Ba IV Crimson Red Choose the correct answer

Identify the correct statements about alkali metals. A. The order of standard reduction potential ( M ^ + | M ) for alkali metal ions is Na > Rb > Li . B. CsI is highly soluble in

Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R . Assertion A : Beryllium has less negative value of reduction potential

The number of s-electrons present in an ion with 55 protons in its unipositive state is

Match Column I with Column II Column I Column II A Soda ash I CaSO _ 4 B Chlorophyll II Ca (OH) _ 2 C Used in Whitewashing III Na _ 2 CO _ 3 D Dentistry, ornamental work IV Mg ^ 2

Reaction of BeO with ammonia and hydrogen fluoride gives ' A ' which on thermal decomposition gives BeF _ 2 and NH _ 4 F . What is ' A ' ?

Portland cement contains &#39; X &#39; to enhance the setting time. What is &#39; X &#39;?

Lithium nitrate and sodium nitrate, when heated separately, respectively, give

Statement I: An alloy of lithium and magnesium is used to make aircraft plates. Statement II : The magnesium ions are important for cell-membrane integrity. In the light the above

Which of the following statement is incorrect?

An element A of group 1 shows similarity to an element B belonging to group 2 . If A has maximum hydration enthalpy in group 1 then B is

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R . Assertion A : LiF is sparingly soluble in water. Reason R : The ionic radius

Reaction of BeCl _ 2 with LiAlH _ 4 gives : (A) AlCl _ 3 (B) BeH _ 2 (C) LiH (D) LiCl (E) BeAlH _ 4 Choose the correct answer from options given below

The correct order of density is

Choose the correct order of density of the alkali metals

Amongst baking soda, caustic soda and washing soda carbonate anion is present in :

Match List-I with Match List-II List-I (Metal) List-II (Emitted light wavelength (nm) ) (A) Li (I) 670 . 8 (B) Na (II) 589 . 2 (C) Rb (III) 780 . 0 (D) Cs (V) 455 . 5 Choose the

Among the following, basic oxide is

BeO reacts with HF in presence of ammonia to give [A] which on thermal decomposition produces [B] and ammonium fluoride. Oxidation state of Be in [A] is

Addition of H _ 2 SO _ 4 to BaO _ 2 produces

BeCl _ 2 reacts with LiAlH _ 4 to give

s-block element which cannot be qualitatively confirmed by the flame test is

The correct order of melting point is

Which one of the following alkaline earth metal ions has the highest ionic mobility in its aqueous solution?

Which one of the following compounds is used as a chemical in certain type of fire extinguishers

Which of the following statements are correct ? (A) Both LiCl and MgCl _ 2 are soluble in ethanol. (B) The oxides Li _ 2 O and MgO combine with excess of oxygen to give

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): Lithium salts are hydrated. Reason (R) : Lithium has

The major component/ingredient of Portland Cement is :

The oxide that gives H _ 2 O _ 2 most readily on treatment with H _ 2 O is :

Choose the correct statement from the following :

The number of water molecules in gypsum, dead burnt plaster and plaster of Paris, respectively are:

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): Barium carbonate is insoluble in water and is highly

What are the products formed in sequence when excess of CO _ 2 is passed in slaked lime?

Match List - I with List II : List-I List-II a Li i photoelectric cell b Na ii absorbent of CO _ 2 c K iii coolant in fast breeder nuclear reactor d Cs iv treatment of cancer v

Match List I with List II : List-I Elements List-II Properties (a) Li (i) Poor water solubility of I ^ - salt (b) Na (ii) Most abundant element in cell fluid (c) K (iii)

Given below are two statements: Statement I : None of the alkaline earth metal hydroxides dissolve in alkali. Srtatement II : Solubility of alkaline earth metal hydroxides in

Match List-I with List-II List - I (Elements) List - II (Properties) (a) Ba ( i ) Organic solvent soluble compounds (b) Ca ( ii ) Outer electronic configuration 6 s ^ 2 (c) Li (

Metallic sodium does not react normally with:

A s-block element (M) reacts with oxygen to form an oxide of the formula MO _ 2 . The oxide is pale yellow in colour and paramagnetic. The element ( M ) is:

Match list-I with list-II : (a) Be (i) Treatment of cancer (b) Mg (ii) Extraction of metals (c) Ca (iii) Incendiary bombs and signals (d) Ra (iv) Windows of X-ray tubes (v)

Match List - I with List - II List - I List - II (a) Ca ( OCl ) _ 2 (i) Antacid (b) CaSO _ 4 · (1)/(2) H _ 2 O (ii) Cement (c) CaO (iii) Bleach (d) CaCO _ 3 (iv) Plaster of paris

The set of elements that differ in mutual relationship from those of the other sets is:

Lime reacts exothermally with water to give ‘ A ’ which has low solubility in water. Aqueous solution of ‘ A ’ is often used for the test of CO _ 2 , a

Portland cement contains ' X ' to enhance the setting time. What is ' X '?

An alkaline earth metal ' M ' readily forms water soluble sulphate and water insoluble hydroxide. Its oxide MO is very stable to heat and does not have rock-salt

Among the statement (I – IV), the correct ones are: (I) Be has smaller atomic radius compared to Mg. (II) Be has higher ionization enthalpy than AI. (III) Charge/radius

Two elements A and B have similar chemical properties. They don't form solid hydrogencarbonates, but react with nitrogen to form nitrides. A and B , respectively, are :