p-Block Elements-I Practice Test

12th Standard Chemistry — p-Block Elements-I: Online Practice Test

Pick how many questions you want and set a time limit, then start. You'll get your score at the end with the correct answer and an explanation for every question. Free, in Tamil and English — 33 questions available.

Set up your test

Number of questions

Time limit

Time remaining00:00

An aqueous solution of borax is

A.neutral B.acidic C.basic D.amphoteric

Boric acid is an acid because its molecule (NEET)

A.contains replaceable \(H^{+}\) ion B.gives up a proton C.combines with proton to form water molecule D.accepts \(OH^{-}\) from water, releasing proton

Which among the following is not a borane?

A.\(B_{2}H_{6}\) B.\(B_{3}H_{6}\) C.\(B_{4}H_{10}\) D.none of these

Which of the following metals has the largest abundance in the earth’s crust?

A.Aluminium B.Calcium C.Magnesium D.Sodium

In diborane, the number of electrons that accounts for banana bonds is

A.six B.two C.four D.three

The element that does not show catenation among the following p-block elements is

A.Carbon B.silicon C.Lead D.germanium

Carbon atoms in fullerene with formula \(C_{60}\) have

A.\(sp^{3}\) hybridised B.\(sp\) hybridised C.\(sp^{2}\) hybridised D.partially \(sp^{2}\) and partially \(sp^{3}\) hybridised

Oxidation state of carbon in its hydrides

A.+4 B.-4 C.+3 D.+2

The basic structural unit of silicates is (NEET)

A.\(SiO_{3}^{2-}\) B.\(SiO_{4}^{2-}\) C.\(SiO^{-}\) D.\(SiO_{4}^{4-}\)

Q10

The repeating unit in silicone is

A.SiO2 B.

Structural diagrams representing different potential chemical repeating units for a silicone polymer chain., choice B

Structural diagrams representing different potential chemical repeating units for a silicone polymer chain., choice C

Structural diagrams representing different potential chemical repeating units for a silicone polymer chain., choice D

Q11

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

A.\(Me_{3}SiCl\) B.\(PhSiCl_{3}\) C.\(MeSiCl_{3}\) D.\(Me_{2}SiCl_{2}\)

Q12

Which of the following is not \(sp^{2}\) hybridised?

A.Graphite B.graphene C.Fullerene D.dry ice

Q13

The geometry at which carbon atom in diamond are bonded to each other is

A.Tetrahedral B.hexagonal C.Octahedral D.none of these

Q14

Which of the following statements is not correct?

A.Beryl is a cyclic silicate B.\(Mg_{2}SiO_{4}\) is an orthosilicate C.\(SiO_{4}^{4-}\) is the basic structural unit of silicates D.Feldspar is not aluminosilicate

Q15

Match items in column - I with the items of column – II and assign the correct code. Column-I: A. Borazole B. Boric acid C. Quartz D. Borax Column-II: 1. \(B(OH)_{3}\) 2. \(B_{3}N_{3}H_{6}\) 3. \(Na_{2}[B_{4}O_{5}(OH)_{4}] \cdot 8H_{2}O\) 4. \(SiO_{2}\)

A.A-2, B-1, C-4, D-3 B.A-1, B-2, C-4, D-3 C.A-1, B-2, C-4, D-3 D.None of these

Q16

Duralumin is an alloy of

A.Cu, Mn B.Cu, Al, Mg C.Al, Mn D.Al, Cu, Mn, Mg

Q17

The compound that is used in nuclear reactors as protective shields and control rods is

A.Metal borides B.metal oxides C.Metal carbonates D.metal carbide

Q18

The stability of +1 oxidation state increases in the sequence

A.Al < Ga < In < Tl B.Tl < In < Ga < Al C.In < Tl < Ga < Al D.Ga < In < Al < Tl

Q19

What is the general outer electronic configuration of p-block elements?

A.ns2 np1-6 B.ns2 np1-5 C.ns1 np1-6 D.ns2 np6

Q20

Which group of p-block elements is specifically referred to as the pnictogens?

A.Group 13 B.Group 14 C.Group 15 D.Group 16

Q21

What is the highest possible oxidation state for elements belonging to the boron family (Group 13)?

A.+1 B.+2 C.+3 D.+4

Q22

Why does boron exhibit non-metallic character while other Group 13 elements are mostly metallic?

A.Due to its large atomic radius B.Due to its very small size and high nuclear charge C.Because it has low ionisation enthalpy D.Due to the absence of valence electrons

Q23

How does metallic character generally change when descending a group in the p-block?

A.It decreases B.It increases C.It remains constant D.It first increases then decreases

Q24

In Group 13, what trend is observed in electronegativity from boron to aluminium?

A.It increases significantly B.It decreases C.It remains unchanged D.It becomes zero

Q25

What is responsible for the 'inert pair effect' observed in heavier p-block elements?

A.The reluctance of outer s-electrons to participate in bonding B.The high reactivity of outer p-electrons C.The absence of d-orbitals in the inner shells D.The increase in electronegativity down the group

Q26

Which of the following elements in Group 14 is classified as a non-metal?

A.Silicon B.Germanium C.Carbon D.Tin

Q27

What is the term for the existence of an element in more than one crystalline or molecular form in the same physical state?

A.Isomerism B.Allotropism C.Catenation D.Resonance

Q28

Which group of elements has the highest ionisation enthalpy in each period?

A.Group 13 B.Group 15 C.Group 17 D.Group 18

Q29

Which factor primarily causes the first element of each p-block group to show anomalous behavior?

A.The presence of vacant d-orbitals B.The small size and high electronegativity C.Large atomic radius D.Low ionisation enthalpy

Q30

Which metal is the most abundant in the earth's crust and belongs to the p-block?

A.Iron B.Copper C.Aluminium D.Gold

Q31

Which oxidation state becomes more common in halogens because they tend to gain an electron for stability?

A.+7 B.-1 C.+1 D.-2

Q32

What general trend is observed regarding ionisation enthalpy when moving from left to right across a period in the p-block?

A.It generally increases B.It generally decreases C.It remains exactly the same D.It shows no predictable pattern

Q33

Which sub-block of the periodic table includes a diverse range of metals, non-metals, and metalloids?

A.s-block B.d-block C.f-block D.p-block

More for this chapter

About this p-Block Elements-I test

This free online practice test covers p-Block Elements-I from the 12th Standard Chemistry (Samacheer Kalvi) syllabus. Choose the number of questions and an optional time limit, then answer and submit — everything is checked in your browser, with the correct answers and a worked explanation shown at the end. For the full solutions to every question in this set, see the solved MCQs page.

More chapters in Chemistry

View all