p-Block Elements · Chemistry · NEET
MCQ (Single Correct Answer)
1
Identify the incorrect statement from the following :
NEET 2024 (Re-Examination)
2
Match List I with List II:
| List - I Solid salt treated with dil. H$$_2$$SO$$_4$$ |
List - II Anion detected |
||
|---|---|---|---|
| (A) | effervescence of colourless gas | (I) | NO$$_2^-$$ |
| (B) | gas with smell of rotten egg | (II) | CO$$_3^{2-}$$ |
| (C) | gas with pungent smell | (III) | S$$^{2-}$$ |
| (D) | brown fumes | (IV) | SO$$_3^{2-}$$ |
Choose the correct answer from the options given below:
NEET 2024 (Re-Examination)
3
Among Group 16 elements, which one does NOT show -2 oxidation state?
NEET 2024
4
Given below are certain cations. Using inorganic qualitative analysis, arrange them in increasing group number from 0 to $$\mathrm{VI}$$.
A. $$\mathrm{Al}^{3+}$$
B. $$\mathrm{Cu}^{2+}$$
C. $$\mathrm{Ba}^{2+}$$
D. $$\mathrm{Co}^{2+}$$
E. $$\mathrm{Mg}^{2+}$$
Choose the correct answer from the options given below.
NEET 2024
5
Match the List - I with List - II
| List - I (Hydride) |
List - II (Type of Hydride) |
||
|---|---|---|---|
| (A) | $$\mathrm{NaH}$$ | (I) | Electron precise |
| (B) | $$\mathrm{PH_3}$$ | (II) | Saline |
| (C) | $$\mathrm{GeH_4}$$ | (III) | Metallic |
| (D) | $$\mathrm{LaH_{2.87}}$$ | (IV) | Electron rich |
Choose the correct answer from the options given below :
NEET 2023 Manipur
6
Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A : Helium is used to dilute oxygen in diving apparatus.
Reason R : Helium has high solubility in O$$_2$$.
In the light of the above statements, choose the correct answer from the options given below:
NEET 2023
7
Match List I with List II:
| List I |
List II |
||
|---|---|---|---|
| (A) | Coke | (I) | Carbon atoms are sp$$^3$$ hybridised |
| (B) | Diamond | (II) | Used as a dry lubricant |
| (C) | Fullerene | (III) | Used as a reducing agent |
| (D) | Graphite | (IV) | Cage like molecules |
Choose the correct answer from the options given below:
NEET 2023
8
The element expected to form largest ion to achieve the nearest noble gas configuration is
NEET 2023
9
Match List I with List II:
| List I (Oxoacids of Sulphur) |
List II (Bonds) |
||
|---|---|---|---|
| (A) | Peroxodisulphuric acid | (I) | Two S-OH, Four S=O, One S-O-S |
| (B) | Sulphuric acid | (II) | Two S-OH, One S=O |
| (C) | Pyrosulphuric acid | (III) | Two S-OH, Four S=O, One S-O-O-S |
| (D) | Sulphurous acid | (IV) | Two S-OH, Two S=O |
Choose the correct answer from the options given below:
NEET 2023
10
Match List-I with List-II :
| List-I (Compounds) |
List-II (Molecular formula) |
||
|---|---|---|---|
| (a) | Borax | (i) | NaBO$$_2$$ |
| (b) | Kernite | (ii) | Na$$_2$$B$$_4$$O$$_7$$ . 4H$$_2$$O |
| (c) | Orthoboric acid | (iii) | H$$_3$$BO$$_3$$ |
| (d) | Borax bead | (iv) | Na$$_2$$B$$_4$$O$$_7$$ . 10H$$_2$$O |
Choose the correct answer from the options given below :
NEET 2022 Phase 2
11
Which of the following reactions is a part of the large scale industrial preparation of nitric acid?
NEET 2022 Phase 2
12
Na2B4O7 $$\buildrel {heat} \over \longrightarrow $$ X + NaBO2
in the above reaction the product "X" is :
NEET 2022 Phase 2
13
Match List-I with List-II.
| List - I (Hydrides) |
List - II (Nature) |
||
|---|---|---|---|
| (a) | MgH$$_2$$ | (i) | Electron precise |
| (b) | GeH$$_4$$ | (ii) | Electron deficient |
| (c) | B$$_2$$H$$_6$$ | (iii) | Electron rich |
| (d) | HF | (iv) | Ionic |
Choose the correct answer from the options given below:
NEET 2022 Phase 1
14
Which of the following statement is not correct about diborane?
NEET 2022 Phase 1
15
Given below are two statements
Statement I : The boiling points of the following hydrides of group 16 elements increases in the order -
H2O < H2S < H2Se < H2Te
Statement II : The boiling points of these hydrides increase with increase in molar mass.
In the light of the above statements, choose the most appropriate answer from the options given below :
NEET 2022 Phase 1
16
Statement I : Acid strength increases in the order given as HF << HCl << HBr << HI.
Statement II : As the size of the elements, F, Cl, Br, I increases down the group, the bond strength of HF, HCl, HBr and HI decreases and so the acid strength increases.
In the light of the above statements, choose the correct answer from the options given below.
Statement II : As the size of the elements, F, Cl, Br, I increases down the group, the bond strength of HF, HCl, HBr and HI decreases and so the acid strength increases.
In the light of the above statements, choose the correct answer from the options given below.
NEET 2021
17
Noble gases are named because of their inertness towards reactivity. Identify an incorrect statement about them.
NEET 2021
18
In which one of the following arrangements the given sequence is not strictly according to the properties indicted against it?
NEET 2021
19
Which of the following is not correct about carbon monoxide?
NEET 2020 Phase 1
20
Match the following and identify the correct option.
| (A) | CO(g) + H2(g) | (i) | Mg(HCO3)2 + Ca(HCO3)2 |
| (B) | Temporary hardness of water | (ii) | An electron deficient hydride |
| (C) | B2H6 | (iii) | Synthesis gas |
| (D) | H2O2 | (iv) | Non-planar structure |
NEET 2020 Phase 1
21
Identify the correct statements from the following :
(A) CO2(g) is used as refrigerant for ice-cream and frozen food.
(B) The structure of C60 contains twelve six-carbon rings and twenty five carbon rings.
(C) ZSM-5, a type of zeolite, is used to convert alcohols into gasoline.
(D) CO is colourless and odourless gas.
(A) CO2(g) is used as refrigerant for ice-cream and frozen food.
(B) The structure of C60 contains twelve six-carbon rings and twenty five carbon rings.
(C) ZSM-5, a type of zeolite, is used to convert alcohols into gasoline.
(D) CO is colourless and odourless gas.
NEET 2020 Phase 1
22
Which of the following oxoacid of sulphur has $$ - $$
O$$ - $$
O$$ - $$
linkage?
NEET 2020 Phase 1
23
Which is the correct thermal stability order for H2E (E = O, S, Se, Te and Po)?
NEET 2019
24
Match the following :
Which of the following is the correct option?
| (a) Pure nitrogen | (i) Chlorine |
|---|---|
| (b) Haber process | (ii) Sulphuric acid |
| (c) Contact process | (iii) Ammonia |
| (d) Deacon’s process | (iv) Sodium azide or Barium azide |
Which of the following is the correct option?
NEET 2019
25
Identify the incorrect statement related to PCl5 from the following :
NEET 2019
26
Which of the following species is not stable?
NEET 2019
27
Which of the following is incorrect statement?
NEET 2019
28
Match the Xenon compounds in Column-I with its structure in Column-II and assign the correct code :
NEET 2019
29
Which of the following statements is not true
for halogens?
NEET 2018
30
Which one of the following elements is unable
to form MF63– ion?
NEET 2018
31
Match the interhalogen compounds of column-I with the geometry in column-II and assign the correct code.
| Column $${\rm I}$$ | Column $${\rm I}$$$${\rm I}$$ | |||
|---|---|---|---|---|
| (A) | XX' | (i) | T-shape | |
| (B) | XX'3 | (ii) | Pentagonal bipyramidal | |
| (C) | XX'5 | (iii) | Linear | |
| (D) | XX'7 | (iv) | Square pyramidal | |
| (v) | Tetrahedral | |||
NEET 2017
32
In which pair of ions both the species contain S $$-$$ S bond?
NEET 2017
33
It is because of inability of ns2 electrons of the valence shell to participate in bonding that
NEET 2017
34
Boric acid is an acid because its molecule
NEET 2016 Phase 2
35
AlF3 is soluble in HF only in presence of KF. It is due to the formation of
NEET 2016 Phase 2
36
Among the following the correct order of acidity is
NEET 2016 Phase 1
37
Match the compounds given in column I with the hybridisation and shape given in column II and mark the correct option
| Column $${\rm I}$$ | Column $${\rm I}$$$${\rm I}$$ | |||
|---|---|---|---|---|
| (A) | XeF6 | (i) | distorted octahedral | |
| (B) | XeO3 | (ii) | square planar | |
| (C) | XeOF4 | (iii) | pyramidal | |
| (D) | XeF4 | (iv) | square pyramidal | |
NEET 2016 Phase 1
38
Which is the correct statement for the given acids?
NEET 2016 Phase 1
39
When copper is heated with conc. HNO3 it produces
NEET 2016 Phase 1
40
Which one of the following orders is correct for the bond dissociation enthalpy of halogen molecules?
NEET 2016 Phase 1
41
Strong reducing behavior of H3PO2 is due to
AIPMT 2015
42
The stability of +1 oxidation state among Al, Ga, In and Tl increases in the sequence
AIPMT 2015
43
The variation of the boiling points of the hydrogen halides is in the order HF > HI > HBr > HCl.
What explains the higher boiling point of hydrogen fluoride?
What explains the higher boiling point of hydrogen fluoride?
AIPMT 2015
44
Which of the statements given below is incorrect?
AIPMT 2015
45
The formation of the oxide ion, O2$$-$$(g) from oxygen atom requires first an exthermic and then an endothermic step as shown below:
O(g) + e$$-$$ $$ \to $$ O$$-$$(g); $$\Delta $$fHo = $$-$$141 kJ mol$$-$$1
O$$-$$(g) + e$$-$$ $$ \to $$ O2$$-$$(g); $$\Delta $$fHo = +780 kJ mol$$-$$1
Thus, process of formation of O2$$-$$ is isoelectronic with neon. It is due to the fact that,
O(g) + e$$-$$ $$ \to $$ O$$-$$(g); $$\Delta $$fHo = $$-$$141 kJ mol$$-$$1
O$$-$$(g) + e$$-$$ $$ \to $$ O2$$-$$(g); $$\Delta $$fHo = +780 kJ mol$$-$$1
Thus, process of formation of O2$$-$$ is isoelectronic with neon. It is due to the fact that,
AIPMT 2015
46
Nitrogen dioxide and sulphur dioxide have some properties in common . Which property is shown by one of these compounds , but not by the other?
AIPMT 2015 Cancelled Paper
47
Acidity of diprotic acids in aqueous solutions increases in the order
AIPMT 2014
48
Which statement is wrong?
NEET 2013 (Karnataka)
49
Identify the incorrect statement, regarding the molecule XeO4 :
NEET 2013 (Karnataka)
50
Which of these is not a monomer for a high molecular mass silicone polymer?
NEET 2013
51
The basic structural unit of silicates is
NEET 2013
52
Which is the strongest acid in the following?
NEET 2013
53
Which one of the following molecules contains no $$\pi $$ bond?
NEET 2013
54
Which of the following does not give oxygen on heating?
NEET 2013
55
Which of the following structure is similar to graphite?
NEET 2013
56
In which of the following arrangements the given sequence is not strictly according to the property indicated against it?
AIPMT 2012 Mains
57
Sulphur trioxide can be obtained by which of the following reaction?
AIPMT 2012 Prelims
58
In which of the following compounds, nitrogen exhibits highest oxidation state?
AIPMT 2012 Prelims
59
Which of the following statements is not valid for oxoacids of phosphorus?
AIPMT 2012 Prelims
60
Which of the following oxide is amphoteric?
AIPMT 2011 Mains
61
Which of the following statements is incorrect?
AIPMT 2011 Mains
62
The Lassaigne's extract is boiled with conc. HNO3 while testing for halogens. By doing so it
AIPMT 2011 Prelims
63
Name the two type of the structure of silicate in which one oxygen atom of [SiO4]4$$-$$ is shared?
AIPMT 2011 Prelims
64
How many bridging oxygen atoms are present in P4O10?
AIPMT 2010 Mains
65
Which one of the following molecular hydrides acts as a Lewis acid?
AIPMT 2010 Prelims
66
The tendency of BF3, BCl3 and BBr3 to behave as Lewis acid decreases in the sequence
AIPMT 2010 Prelims
67
The correct order of increasing bond angles in the following species is
AIPMT 2010 Prelims
68
Oxidation states of P in H4P2O5, H4P2O6, H4P2O7 are respectively
AIPMT 2010 Prelims
69
The straight chain polymer is formed by
AIPMT 2009
70
Among the following which is the strongest oxidising agent?
AIPMT 2009
71
The stability of +1 oxidation state among Al, Ga, In and Tl increases in the sequence
AIPMT 2009
72
The angular shape of ozone molecule (O3) consists of
AIPMT 2008
73
Which one of the following orders correctly represents the increasing acid strengths of the given acids?
AIPMT 2007
74
Which of the following anions is present in the chain structure of silicates?
AIPMT 2007
75
Which of the following oxidation states are the most characteristic for lead and tin respectively?
AIPMT 2007
76
In which of the following molecules are all the bonds are not equal?
AIPMT 2006
77
The correct order regarding the electronegativity of hybrid orbitals of carbon is
AIPMT 2006
78
Which of the following is the most basic oxide?
AIPMT 2006
79
Which one of the following orders correctly represents the increasing acid strengths of the given acids?
AIPMT 2005
80
What is the correct relationship between the pH of isomolar solutions of sodium oxide, Na2O (pH1), sodium sulphide, Na2S (pH2), sodium srlenide, Na2Se (pH3) and sodium telluride Na2Te (pH4)?
AIPMT 2005
81
Which one of the following oxides is expected to exhibit paramagnetic behaviour?
AIPMT 2005
82
Among K, Ca, Fe and Zn, the element which can from more than one binary compound with chlorine is
AIPMT 2004
83
Which one of the following statements about the zeolite is false?
AIPMT 2004
84
Which one of the following statements is not true?
AIPMT 2003
85
Which one of the following compounds is not a protonic acid?
AIPMT 2003
86
Which of the following statement is true?
AIPMT 2002
87
Which compound is electron deficient?
AIPMT 2000