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p Block Elements (Group 13 & 14) — NEET UG Chemistry PYQs

613 previous year questions from p Block Elements (Group 13 & 14) with answers and solutions. Numbered list, year tags, and one-tap solutions — built for serious JEE / NEET practice.

613 questionsChemistrySolutions on every page
1

Which of the following elements is in allotopic form in fullerene?

MHT CET Medical 2026 Solution View → 2

Identify the incorrect statement from the following :

NEET 2026 Solution View → 3

In potash alum, the ratio of K ^+ and SO₄²⁻ ions is

NEET 2026 Solution View → 4

Select the element (M) whose trihalides cannot be hydrolysed to produce an ion of the form [ M ( H ₂ O )₆ ]³⁺

NEET 2023 Solution View → 5

Na ₂ ~B ₄ O ₇ heat X + NaBO ₂ in the above reaction the product " X " is :

NEET 2022 Solution View → 6

Match List-I with List-II : ( array l|l List-I & List-II (Compounds) & (Molecular formula) (a) Borax & (i) NaBO ₂ (b) Kernite & (ii) Na ₂ ~B ₄ O ₇ 4 H ₂ O (c) Orthoboric acid & (ii

NEET 2022 Solution View → 7

Which of the following statement is not correct about diborane?

NEET 2022 Solution View → 8

Match the following and identify the correct option. (a) CO g + H 2 g (i) Mg HCO 3 2 + Ca HCO 3 2 (b) Temporary hardness of water (ii) An electron deficient hydride (c) B 2 H 6 (ii

NEET 2020 Solution View → 9

Identify the correct statements from the following: (a) CO 2 g is used as a refrigerant for ice cream and frozen food. (b) The structure of C 60 contains twelve six-membered carbon

NEET 2020 Solution View → 10

Which of the following is not allotrope of carbon?

JIPMER 2019 Solution View → 11

Which of the following statement is correct for isotope of carbon?

JIPMER 2019 Solution View → 12

Which of the following compounds is used in cosmetic surgery?

NEET 2019 Solution View → 13

Which one of the following elements is unable to form MF 6 3 - ion?

NEET 2018 Solution View → 14

In the reaction X+ I ₂+2 HCl SnCl ₄+2 HI The correct option regarding X is/are

JIPMER 2016 Solution View → 15

Boric acid is an acid because its molecule

NEET 2016 Solution View → 16

AlF 3 is soluble in HF only in presence of KF . It is due to the formation of

NEET 2016 Solution View → 17

Number of oxygen atoms shared per SiO ₄⁴⁻ tetrahedron in I. two dimensional sheet structured silicates II. cyclic silicates and III. single strand chain silicates respectively are

JIPMER 2015 Solution View → 18

The stability of +1 oxidation state among Al, Ga, In and Tl increases in the sequence:

NEET 2015 Solution View → 19

Which one of the following statements about C ₂ molecule is wrong?

JIPMER 2013 Solution View → 20

Which statement is wrong?

NEET 2013 Solution View → 21

The basic structural unit of silicates is

NEET 2013 Solution View → 22

Which of these is not a monomer for a high molecular mass silicone polymer?

NEET 2013 Solution View → 23

Which of the following is electron deficient?

NEET 2013 Solution View → 24

Which of the following statements is incorrect?

NEET 2011 Solution View → 25

Name the type of the structure of silicate in which one oxygen atom of [ SiO ₄ ]⁴⁻ is shared?

NEET 2011 Solution View → 26

Inorganic benzene is

JIPMER 2010 Solution View → 27

The tendency of BF ₃, BCl ₃ and BBr ₃ to behave as Lewis acid decreases in the sequence

NEET 2010 Solution View → 28

The straight chain polymer is formed by

NEET 2009 Solution View → 29

With which one of the following elements silicon should be doped so as to give ptype of semiconductor?

NEET 2008 Solution View → 30

Which of the following is the electron deficient molecule?

JIPMER 2007 Solution View → 31

Which of the following oxidation states are the most characteristics for lead and tin respectively?

NEET 2007 Solution View → 32

Which of the following anions is present in the chain structure of silicates?

NEET 2007 Solution View → 33

Which of the following compounds is carborundum?

JIPMER 2006 Solution View → 34

Which of the following is the most basic oxide?

NEET 2006 Solution View → 35

Al ₂ O ₃ can be converted to anhydrous AlCl ₃ by heating:

NEET 2006 Solution View → 36

The hardest substance is

JIPMER 2005 Solution View → 37

Graphite is soft while diamond is hard because

JIPMER 2005 Solution View → 38

Which of the following is the electron deficient molecule?

NEET 2005 Solution View → 39

Which one of the following statements about the zeolite is false?

NEET 2004 Solution View → 40

What property of gallium makes it a useful material for measuring high temperatures?

NEET Solution View → 41

What are some products that use graphite fibers embedded in plastic composites?

NEET Solution View → 42

Which compound is used as a reducing agent in organic synthesis and is derived from diborane?

NEET Solution View → 43

What type of compounds do amorphous boron and aluminum form when heated in air?

NEET Solution View → 44

What is the basic structural unit of silicates?

NEET Solution View → 45

What are some of the characteristics of aluminum?

NEET Solution View → 46

Which two elements have a noble gas core in their electronic configuration?

NEET Solution View → 47

What type of compounds do highly reactive non-metals form with highly reactive metals?

NEET Solution View → 48

What does orthoboric acid form when heated above 370K?

NEET Solution View → 49

Why is diamond considered the hardest substance on Earth?

NEET Solution View → 50

What is the color of diborane?

NEET Solution View → 51

What is the unit of measurement for diamond?

NEET Solution View → 52

Why is lead unaffected by water?

NEET Solution View → 53

What is expected to happen to the atomic radius as you move down the group?

NEET Solution View → 54

What is the trend in ionization enthalpy values expected as you move down the group?

NEET Solution View → 55

What are water gas and producer gas primarily used for in industrial applications?

NEET Solution View → 56

Why can most tetrachlorides be easily hydrolyzed by water?

NEET Solution View → 57

What is the nature of the oxides of aluminum and gallium?

NEET Solution View → 58

What is the stable isotope of naturally occuring carbon?

NEET Solution View → 59

What is the role of copper in the synthesis of silicones?

NEET Solution View → 60

What causes the observed discontinuity in ionization enthalpy values between aluminum and gallium?

NEET Solution View → 61

What are some of the applications of silicones?

NEET Solution View → 62

What property of graphite makes it suitable for making crucibles?

NEET Solution View → 63

What is the nature of non-metal oxides?

NEET Solution View → 64

Which elements are members of group 14?

NEET Solution View → 65

What is the general electronic configuration of the first member of Group 13 in the periodic table?

NEET Solution View → 66

What is the energy change (Δ) associated with the combustion of diborane in oxygen?

NEET Solution View → 67

Why are silicones water-repelling in nature?

NEET Solution View → 68

How would you describe the melting points and boiling points of group 14 elements compared to those of corresponding elements in group 13?

NEET Solution View → 69

What is the melting point of gallium?

NEET Solution View → 70

How many d-electrons are present in the electronic configuration of gallium and indium?

NEET Solution View → 71

How many isotopic forms of boron are there?

NEET Solution View → 72

Why does boron primarily form covalent compounds?

NEET Solution View → 73

What is the maximum oxidation state shown by a p-block element?

NEET Solution View → 74

Which minerals are mentioned as important sources of aluminum?

NEET Solution View → 75

What tendency do group 14 elements have in forming complexes with donor species?

NEET Solution View → 76

What is the distance between two layers of graphite?

NEET Solution View → 77

What property of carbon monoxide (CO) makes it useful in the extraction of metals from their oxide ores?

NEET Solution View → 78

What does the oxide layer on the surface of aluminum do?

NEET Solution View → 79

What is the glass-like material obtained when borax further heats up and solidifies?

NEET Solution View → 80

Among the heavier members of group 14, which element shows the highest tendency to exhibit a +2 oxidation state?

NEET Solution View → 81

Are oxides in higher oxidation states generally more acidic or basic than those in lower oxidation states?

NEET Solution View → 82

What gives aromatic character to the C60 molecule?

NEET Solution View → 83

What are two important man-made silicates?

NEET Solution View → 84

How many vertices does a Buckminsterfullerene (C60) molecule have, and what occupies each vertex?

NEET Solution View → 85

What is the main industrial application of borax and boric acid?

NEET Solution View → 86

Which element has the atomic number 113?

NEET Solution View → 87

What is quartz extensively used for?

NEET Solution View → 88

How is pure carbon monoxide (CO) prepared on a small scale?

NEET Solution View → 89

What is the behavior of the halides of group 14 elements in terms of hydrolysis?

NEET Solution View → 90

What is the temperature at which the reaction between methyl chloride and silicon takes place?

NEET Solution View → 91

How does concentrated nitric acid affect aluminum?

NEET Solution View → 92

How can silicate units be joined together in silicate structures?

NEET Solution View → 93

What is the seventeenth most abundant element by mass in the earth's crust?

NEET Solution View → 94

How does the ionization enthalpy generally change as you move down group 14?

NEET Solution View → 95

What happens to the overall structure of silicon dioxide when aluminum atoms replace some silicon atoms?

NEET Solution View → 96

How is carbon black obtained?

NEET Solution View → 97

In what forms is carbon available in its elemental state?

NEET Solution View → 98

What is the primary reason for the higher electronegativity of group 14 elements?

NEET Solution View → 99

Under what conditions does SiO exist?

NEET Solution View → 100

What property of graphite makes it conduct electricity?

NEET Solution View → 101

What are the two main types of oxides formed by all members when heated in oxygen?

NEET Solution View → 102

Which substances attack silica?

NEET Solution View → 103

What is the bond length within each layer of graphite?

NEET Solution View → 104

What are some of the industries where aluminum and its alloys find uses?

NEET Solution View → 105

What effect does the sum of the first three ionization enthalpies have on the chemical properties of these elements?

NEET Solution View → 106

Which element in the group 13 is known to exhibit both +1 and +3 oxidation states?

NEET Solution View → 107

Which element is the exception and does not form trihalides?

NEET Solution View → 108

What is the thermodynamically most stable allotrope of carbon?

NEET Solution View → 109

Which group 13 element lacks d orbitals, limiting its covalence to 4?

NEET Solution View → 110

What is kieselghur?

NEET Solution View → 111

What is the product obtained when metaboric acid is further heated?

NEET Solution View → 112

Which two elements in group 14 are "soft metals with low melting points"?

NEET Solution View → 113

What is the maximum covalence for the second period elements of p-groups?

NEET Solution View → 114

What are the composites made from graphite fibers and plastic used in?

NEET Solution View → 115

What is the nature of the oxides of indium and thallium?

NEET Solution View → 116

How does the metal species complete its octet in halogen-bridged molecules?

NEET Solution View → 117

Which elements head the groups in the p-block of the periodic table?

NEET Solution View → 118

Why does boron have an unusually high melting point?

NEET Solution View → 119

How many sigma and pi bonds are present between carbon and oxygen in a carbon monoxide (CO) molecule?

NEET Solution View → 120

How does the tendency to behave as Lewis acids change as you move down the group?

NEET Solution View →
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