p-Block (15–18)

8 JEE Main questions · Chemistry

ChemistryJEE Main 22 Jan 2026, Shift 1·Q14·MCQ·Easy–moderate
Open
Hydrogen halides and group 15 hydrides
Given below are two statements :
Statement I : The halogen that makes longest bond with hydrogen in HX, has the smallest covalent radius in its group.
Statement II : A group 15 element's hydride $\ce{EH3}$ has the lowest boiling point among corresponding hydrides of other group 15 elements. The maximum covalency of that element E is 4.
In the light of the above statements, choose the correct answer from the options given below.
1. (1)Both Statement I and Statement II are true.
2. (2)Statement I is false but Statement II is true.
3. (3)Both Statement I and Statement II are false.
4. (4)Statement I is true but Statement II is false.
ChemistryJEE Main 22 Jan 2026, Shift 2·Q9·MCQ·Easy–moderate
Open
Group 15 oxides and electronegativity
Given below are two statements :
Statement-I : Element ‘X' and ‘Y' are the most and least electronegative elements, respectively among N, As, Sb and P. The nature of the oxides $\ce{X2O3}$ and $\ce{Y2O3}$ is acidic and amphoteric, respectively.
Statement-II : $\ce{BCl3}$ is covalent in nature and gets hydrolysed in water. It produces $\ce{[B(OH)4]^-}$ and $\ce{[B(H2O)6]^{3+}}$ in aqueous medium.
In the light of the above statements, choose the correct answer from the options given below :
1. (1)Both Statement-I and Statement-II are true.
2. (2)Statement-I is true but Statement-II is false.
3. (3)Both Statement-I and Statement-II are false.
4. (4)Statement-I is false but Statement-II is true.
ChemistryJEE Main 24 Jan 2026, Shift 2·Q8·MCQ·Easy–moderate
Open
Chlorine with cold alkali
One mole of $\ce{Cl2}$ (g) was passed into 2 L of cold 2M KOH solution. After the reaction, the concentrations of $\ce{Cl-}$ , $\ce{ClO-}$ and $\ce{OH-}$ are respectively (assume volume remains constant)
1. (1)0.75 M, 0.75 M, 1 M
2. (2)0.5 M, 0.5 M, 0.5 M
3. (3)0.5 M, 0.5 M, 1 M
4. (4)1 M, 1 M, 1 M
ChemistryJEE Main 28 Jan 2026, Shift 1·Q11·MCQ·Easy–moderate
Open
Group 15 hydride trends
Regarding the hydrides of group 15 elements $\ce{EH3}$ (E = N, P, As, Sb), select the correct statement from the following:
- (A)The stability of hydrides decreases down the group.
- (B)The basicity of hydrides decreases down the group.
- (C)The reducing character increases down the group.
- (D)The boiling point increases down the group.
Choose the correct answer from the options given below:
1. (1)A, B & C only
2. (2)A & D only
3. (3)A, B, C & D
4. (4)B & C only
ChemistryJEE Main 28 Jan 2026, Shift 2·Q2·MCQ·Easy–moderate
Open
Hydrogen halide boiling and melting points
Given below are two statements :
Statement I : The increasing order of boiling point of hydrogen halides is HCl $<$ HBr $<$ HI $<$ HF.
Statement II : The increasing order of melting point of hydrogen halides is HCl $<$ HBr $<$ HF $<$ HI.
In the light of the above statements, choose the correct answer from the options given below :
1. (1)Both Statement I and Statement II are true
2. (2)Statement I is true but Statement II is false
3. (3)Both Statement I and Statement II are false
4. (4)Statement I is false but Statement II is true
ChemistryJEE Main 4 Apr 2026, Shift 1·Q9·MCQ·Easy–moderate
Open
Oxygen anomalous behaviour
Given below are two statements :
Statement I : The covalency of oxygen is generally two but it can exceed upto four. The oxidation state of oxygen in $\ce{SO2}$ is $-2$ and in $\ce{OF2}$ it is $+2$ .
Statement II : The anomalous behaviour of oxygen when compared to the other elements of group 16 is due to its small size and high electronegativity.
In the light of the above statements, choose the correct answer from the options given below :
1. (1)Both Statement I and Statement II are true
2. (2)Both Statement I and Statement II are false
3. (3)Statement I is true but Statement II is false
4. (4)Statement I is false but Statement II is true
ChemistryJEE Main 5 Apr 2026, Shift 1·Q9·MCQ·Easy–moderate
Open
Anomalous behaviour of nitrogen
Correct statements from the following are :
- (A)Nitrogen in oxidation states from $+1$ to $+4$ disproportionates in acid medium.
- (B)Nitrogen has the ability to form d $\pi$ -p $\pi$ multiple bonds with itself and other elements with small size and high electronegativity.
- (C)N-N single bond is stronger than P-P single bond.
- (D)Nitrogen has highest density in its group due to small size.
- (E)The maximum covalency of nitrogen is four since it has only four valence orbitals for bonding.
Choose the correct answer from the options given below :
1. (1)B, C, and D only
2. (2)C, D, and E only
3. (3)A, C and E only
4. (4)A and E only
We corrected a printing error in the original paper
Source printed “the ability of form”.
ChemistryJEE Main 8 Apr 2026, Shift 2·Q9·MCQ·Easy–moderate
Open
Group 15 hydrides properties
Find the correct statements related to group 15 hydrides.
- (A)Reducing nature increases from $\ce{NH3}$ to $\ce{BiH3}$
- (B)Tendency to donate lone pair of electrons decreases from $\ce{NH3}$ to $\ce{BiH3}$
- (C)The stability of hydrides decreases from $\ce{NH3}$ to $\ce{BiH3}$
- (D)HEH bond angle decreases from $\ce{NH3}$ to $\ce{SbH3}$ (E = Elements of group 15)
Choose the correct answer from the options given below :
1. (1)A and B only
2. (2)B and C only
3. (3)A, B, C and D
4. (4)A, C and D only