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NEET s Block Elements PYQs with Solutions

499 previous year questions from s Block Elements (NEET UG Chemistry) with answers and solutions. Numbered list, year tags, and one-tap solutions — built for serious JEE / NEET practice.

499 questionsChemistry2004–2026Answers + solutions

About s Block Elements PYQs

s Block Elements has 499 previous year questions in the Quantrex Academy NEET UG Chemistry bank. The 220 questions in this list come from NEET (190), JIPMER (25) and MHT CET Medical (5), spanning 2004 to 2026. Each question opens on its own page with the options, the correct answer and the worked solution where available.

Questions by year (this list)

2026: 5
2019: 1
2018: 4
2017: 2
2016: 1
2015: 1
2014: 1
2013: 1
2012: 4
2011: 1
2010: 1
2009: 1

Alkali metals readily dissolve in liquid ammonia to give blue coloured solutions. The blue colour is believed to be due to

JIPMER 2018 Solution View → 8

If Na^ + ion is larger than Mg^ 2+ ions and S^ 2- ion is larger than Cl^ - ion, which of the following will be stable salt in water?

JIPMER 2018 Solution View → 9

The chemical formulae of X, Y and Z are x Y z CaO Ca(OH)_2 NaOH NaOH CaO CaCO_3 NaOH Ca(OH)_2 CaCO_3 Ca(OH)_2 NaOH CaCO_3

JIPMER 2015 Solution View → 15

A nuclide of an alkaline earth metal undergoes radioactive decay by emission of three α -particles in succession. The group of the periodic table to which the resulting daughter

JIPMER 2007 Solution View → 27

Among lithium and magnesium, which element reacts slowly with water and forms a nitride by direct combination with nitrogen?

NEET Solution View → 58

What is responsible for the change in color from blue to bronze in concentrated alkali metal solutions in liquid ammonia?

NEET Solution View → 59

Among the alkaline earth metal sulfates, which one forms a white precipitate when added to water due to its low solubility?

NEET Solution View → 70

What happens to the stability of carbonates and hydrogen carbonates as you move down the alkali metal group in the periodic table?

NEET Solution View → 80

How does Plaster of Paris behave when mixed with water?

NEET Solution View → 81

What contributes to the reducing nature of beryllium (Be2+)?

NEET Solution View → 82

Among beryllium, magnesium, calcium, strontium, and barium, which metal is most readily attacked by air to form the oxide and nitride?

NEET Solution View → 83

Which of the following trends is observed as you move down the group from Be to Ba in terms of electropositive character?

NEET Solution View → 95

Which technique is used for the determination of alkali metals by measuring the absorption of light at specific wavelengths?

NEET Solution View → 112

Both lithium and magnesium are known to be harder and lighter than other elements in their respective groups. Which property contributes to their hardness?

NEET Solution View → 113

Related NEET Chemistry chapters

Chemical Bonding and Molecular Structure (1,423)General Organic Chemistry (1,091)p Block Elements (Group 15, 16, 17 & 18) (1,072)Biomolecules (1,038)Coordination Compounds (891)d and f Block Elements (869)Electrochemistry (865)Chemical Kinetics (819)Structure of Atom (785)Ionic Equilibrium (764)Hydrocarbons (757)Thermodynamics (C) (730)

s Block Elements in other exams

JEE s Block Elements (275)BITSAT s Block Elements (26)

NEET s Block Elements PYQs with Solutions

About s Block Elements PYQs

Questions by year (this list)

s Block Elements questions with solutions

Identify the oxide used as CO_2 adsorbent and oxygen generator from following.

Which of the following substance does NOT contain CaCO_3 ?

Which of the following compound used in petrol refining?

Which of the following elements is the radioactive alkaline earth metal?

Identify the pair of basic oxides from the following.

Bordeaux mixture consist of

Alkali metals readily dissolve in liquid ammonia to give blue coloured solutions. The blue colour is believed to be due to

If Na^ + ion is larger than Mg^ 2+ ions and S^ 2- ion is larger than Cl^ - ion, which of the following will be stable salt in water?

The correct formula for plaster of Paris is

The correct order of ease of adsorption of the hydrated alkali metal ions on an ion exchange resin is

Which of the following is the correct order of stability for the given superoxides?

When CO_2 is bubbled through a solution of barium peroxide in water then

Beryllium differs in properties from other elements of its own group but shows resemblance with aluminium because of

The chemical formulae of X, Y and Z are x Y z CaO Ca(OH)_2 NaOH NaOH CaO CaCO_3 NaOH Ca(OH)_2 CaCO_3 Ca(OH)_2 NaOH CaCO_3

Among the following the least thermally stable is

Among LiCl, BeCl_2, BCl_3 and CCl_4 , the covalent bond character follows the order

The correct order of decreasing first ionisation energy is

Le-blanc process is employed in the manufacture of

Argol, a brown crust, formed during the fermentation of grape juice contains

Which of the following metal carbonates decomposes on heating?

The metal that produces red-violet colour in the non-luminous flame is

Ammonia gas can be dried over

Which of the following is not correct?

Plaster of paris is

The correct sequence of increasing covalent character is represented by

A nuclide of an alkaline earth metal undergoes radioactive decay by emission of three α -particles in succession. The group of the periodic table to which the resulting daughter

What will be the order of Ist ionisation energy ?

What is the formula of bleaching powder ?

Which one of the following elements, is a component of a compound essential for photosynthesis?

Which of the following dissolves in hot conc. NaOH solution?

What type of salts do alkali metals form with oxo-acids?

What ion is formed when aluminium hydroxide dissolves in excess of alkali?

When beryllium (Be) reacts with hydrochloric acid (HCl), what is the product formed?

Why do the alkaline earth metals have higher melting and boiling points than the corresponding alkali metals?

What happens to the paramagnetic nature of alkali metal solutions in liquid ammonia when they stand for some time?

What are the primary uses of sodium chloride?

What is the primary reason for sodium having lower reducing power compared to lithium?

How is sodium hydroxide generally prepared commercially?

Which gas is evolved at the anode during the electrolysis of sodium chloride to produce sodium hydroxide?

What type of compounds do alkali metals readily form when they react with halogens?

What is the primary reason for the alkaline earth metals being strongly electropositive in nature?

What is the significance of the low melting and boiling points of alkali metals?

Which alkaline earth metal nitrate crystallizes with six molecules of water?

What happens to the outermost orbital electron of an alkali metal when it is exposed to a flame during a flame test?

Which alkali metal forms superoxides when it reacts with oxygen?

Which group of elements exhibits similar behavior in terms of low melting and boiling points as alkali metals?

Which factor primarily determines the solubility of alkaline earth metal sulfates in water?

Among the alkaline earth metal halides, which ones are soluble in organic solvents?

What is the structure of the chlorides of beryllium and aluminium in the vapour phase?

Which group of elements in the periodic table has the largest atomic sizes within a given period?

Which alkaline earth metal is known for its toxicity and is handled with caution in industrial settings?

What is the trend in melting points among alkali metals as you move down the periodic table?

How many water molecules are associated with each molecule of magnesium nitrate when it crystallizes?

How does calcium oxide (CaO) react with acidic oxides at high temperature?

Among the alkaline earth metal halides, which ones undergo hydrolysis when heated?

What is one of the uses of calcium carbonate in the field of cosmetics?

Among lithium and magnesium, which element reacts slowly with water and forms a nitride by direct combination with nitrogen?

What is responsible for the change in color from blue to bronze in concentrated alkali metal solutions in liquid ammonia?

Which alkaline earth metal halide forms a chain structure in the solid state?

Among the alkaline earth metal sulfates, which one has the lowest solubility in water?

Which of the following is an example of an oxo-acid?

Which type of ion is stable only in the presence of large cations like K, Rb, Cs?

Which of the following is a common use of calcium?

Which of the following ions is smaller than the parent atom among alkali metals?

Which compounds can be prepared using sodium chloride?

How is calcium carbonate prepared through chemical reactions?

Which alkaline earth metal has the highest melting point?

Among the alkaline earth metals, which element has the smallest atomic radius?

Among the alkaline earth metal sulfates, which one forms a white precipitate when added to water due to its low solubility?

Which compound is an example of an extensively hydrated alkaline earth metal compound?

What type of solutions are formed when alkali metals dissolve in liquid water?

How does the solubility of sodium chloride change with an increase in temperature?

Which alkali metal ion has the highest degree of hydration?

Which alkaline earth metal has the highest enthalpy of formation for its oxide?

Which compound forms a hydrate among the following options?

Which alkaline earth metal oxide is the least basic?