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s Block Elements — NEET UG Chemistry PYQs

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

499 questionsChemistrySolutions on every page
1

Identify the oxide used as CO ₂ adsorbent and oxygen generator from following.

MHT CET Medical 2026 Solution View → 2

Which of the following substance does NOT contain CaCO ₃ ?

MHT CET Medical 2026 Solution View → 3

Which of the following compound used in petrol refining?

MHT CET Medical 2026 Solution View → 4

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

MHT CET Medical 2026 Solution View → 5

Identify the pair of basic oxides from the following.

MHT CET Medical 2026 Solution View → 6

Bordeaux mixture consist of

JIPMER 2019 Solution View → 7

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 correct formula for plaster of Paris is

JIPMER 2018 Solution View → 10

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

JIPMER 2018 Solution View → 11

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

JIPMER 2017 Solution View → 12

When CO ₂ is bubbled through a solution of barium peroxide in water then

JIPMER 2017 Solution View → 13

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

JIPMER 2016 Solution View → 14

The chemical formulae of X, Y and Z are array |c|c|c|c| & x & Y & z & CaO & Ca ( OH )₂ & NaOH & NaOH & CaO & CaCO ₃ & NaOH & Ca ( OH )₂ & CaCO ₃ & Ca ( OH )₂ & NaOH & CaCO ₃ array

JIPMER 2015 Solution View → 15

Among the following the least thermally stable is

JIPMER 2014 Solution View → 16

Among LiCl , BeCl ₂, BCl ₃ and CCl ₄ , the covalent bond character follows the order

JIPMER 2013 Solution View → 17

The correct order of decreasing first ionisation energy is

JIPMER 2012 Solution View → 18

Le-blanc process is employed in the manufacture of

JIPMER 2012 Solution View → 19

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

JIPMER 2012 Solution View → 20

Which of the following metal carbonates decomposes on heating?

JIPMER 2012 Solution View → 21

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

JIPMER 2011 Solution View → 22

Ammonia gas can be dried over

JIPMER 2010 Solution View → 23

Which of the following is not correct?

JIPMER 2009 Solution View → 24

Plaster of paris is

JIPMER 2008 Solution View → 25

The correct sequence of increasing covalent character is represented by

JIPMER 2007 Solution View → 26

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

JIPMER 2007 Solution View → 27

What will be the order of Ist ionisation energy ?

JIPMER 2006 Solution View → 28

What is the formula of bleaching powder ?

JIPMER 2006 Solution View → 29

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

JIPMER 2004 Solution View → 30

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

JIPMER 2004 Solution View → 31

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

NEET Solution View → 32

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

NEET Solution View → 33

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

NEET Solution View → 34

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

NEET Solution View → 35

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

NEET Solution View → 36

What are the primary uses of sodium chloride?

NEET Solution View → 37

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

NEET Solution View → 38

How is sodium hydroxide generally prepared commercially?

NEET Solution View → 39

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

NEET Solution View → 40

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

NEET Solution View → 41

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

NEET Solution View → 42

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

NEET Solution View → 43

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

NEET Solution View → 44

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

NEET Solution View → 45

Which alkali metal forms superoxides when it reacts with oxygen?

NEET Solution View → 46

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

NEET Solution View → 47

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

NEET Solution View → 48

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

NEET Solution View → 49

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

NEET Solution View → 50

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

NEET Solution View → 51

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

NEET Solution View → 52

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

NEET Solution View → 53

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

NEET Solution View → 54

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

NEET Solution View → 55

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

NEET Solution View → 56

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

NEET Solution View → 57

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

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

NEET Solution View → 60

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

NEET Solution View → 61

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

NEET Solution View → 62

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

NEET Solution View → 63

Which of the following is a common use of calcium?

NEET Solution View → 64

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

NEET Solution View → 65

Which compounds can be prepared using sodium chloride?

NEET Solution View → 66

How is calcium carbonate prepared through chemical reactions?

NEET Solution View → 67

Which alkaline earth metal has the highest melting point?

NEET Solution View → 68

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

NEET Solution View → 69

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

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

NEET Solution View → 71

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

NEET Solution View → 72

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

NEET Solution View → 73

Which alkali metal ion has the highest degree of hydration?

NEET Solution View → 74

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

NEET Solution View → 75

Which compound forms a hydrate among the following options?

NEET Solution View → 76

Which alkaline earth metal oxide is the least basic?

NEET Solution View → 77

Which group of elements do the alkaline earth metals belong to in the periodic table?

NEET Solution View → 78

Which alkaline earth metal oxide is the least stable to heat?

NEET Solution View → 79

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

What is the primary use of Plaster of Paris in the medical industry?

NEET Solution View → 84

What is the chemical formula of Gypsum?

NEET Solution View → 85

What is the primary use of lime in the tanning industry?

NEET Solution View → 86

Which alkali metal has the lowest melting point?

NEET Solution View → 87

Which industry commonly uses milk of lime in its processes?

NEET Solution View → 88

What is the chemical formula for the nitrate formed by the dissolution of magnesium carbonate in dilute nitric acid?

NEET Solution View → 89

What is the chemical formula of the dihydrogen liberated when an alkaline earth metal reacts with hydrochloric acid?

NEET Solution View → 90

What is the common tendency of beryllium and aluminium ions regarding complex formation?

NEET Solution View → 91

What is the term used to describe the distortion of the electron cloud of an anion by a cation?

NEET Solution View → 92

What is the oxidation state of alkali metals in their oxides?

NEET Solution View → 93

What is the final product formed when alkali metal solutions in liquid ammonia slowly liberate hydrogen?

NEET Solution View → 94

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

What property of calcium hydroxide makes it suitable for use in white wash?

NEET Solution View → 96

Which alkaline earth metal sulfate has the highest hydration enthalpy?

NEET Solution View → 97

What is the primary reason for the conducting nature of alkali metal solutions in liquid ammonia?

NEET Solution View → 98

Which property of beryllium (Be) contributes to its weaker reducing nature?

NEET Solution View → 99

Among lithium and magnesium, which one crystallizes from aqueous solution as the hydrate LiCl·2H 2 O?

NEET Solution View → 100

What is the product of the reaction between calcium (Ca) and hydrochloric acid (HCl)?

NEET Solution View → 101

How many ammonia molecules are coordinated around the alkaline earth metal in the ammoniate ion?

NEET Solution View → 102

What is the common name for anhydrous calcium sulfate formed when gypsum is heated?

NEET Solution View → 103

What is the primary reason for lithium's high negative E o value and strong reducing power?

NEET Solution View → 104

Which alkaline earth metal is used in the production of fireworks to create a brilliant white light?

NEET Solution View → 105

Why do beryllium and magnesium appear kinetically inert to oxygen and water?

NEET Solution View → 106

Which of the following compounds forms a hydrate?

NEET Solution View → 107

In concentrated alkali metal solutions in liquid ammonia, what color does the solution change to?

NEET Solution View → 108

What is the chemical equation for the reaction of calcium oxide with silicon dioxide to form calcium silicate?

NEET Solution View → 109

What causes limewater to turn milky when carbon dioxide is passed through it?

NEET Solution View → 110

What characteristic colors do calcium, strontium, and barium impart to a flame?

NEET Solution View → 111

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

Which alkaline earth metal is the most reactive towards acids?

NEET Solution View → 114

For what purpose are the chlorides of beryllium and aluminium used?

NEET Solution View → 115

Which alkaline earth metal halide has the highest number of water molecules in its hydrate?

NEET Solution View → 116

Which alkaline earth metal oxide is sparingly soluble in water?

NEET Solution View → 117

In flame tests for alkali metals, why is it important to use an oxidizing flame?

NEET Solution View → 118

What type of acids are the chlorides of beryllium and aluminium?

NEET Solution View → 119

What is the chemical process involved in the preparation of calcium oxide on a commercial scale?

NEET Solution View → 120

Which alkali metal ion has the strongest tendency to form hydrates in the presence of water?

NEET Solution View →
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