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p-Block Elements (Group 15–18)

JEE Main 2024 (Online) 27th January Evening ShiftNumericalEasy📈 Topic in 19% papers+4
Ques. 1JEE Main 2024, 27 January (Evening Shift)

1 mole of PbS is oxidised by "X" moles of O3 to get "Y" moles of O2. X + Y = .

Answer

8

Solution

Ozone oxidises sulphide to sulphate; each O3 gives one O atom: O3 O2 + [O]

PbS needs 4 O atoms to become PbSO4:

PbS(s) + 4O3(g) PbSO4(s) + 4O2(g)

⇒ X = 4, Y = 4

∴ X + Y = 8

Answer: 8

Keep practising — p-Block Elements (Group 15–18)

Ques. 2JEE Main 2026, 8 April (Evening Shift)

Find the correct statements related to group 15 hydrides. Choose the correct answer from the options given below :

  1. A and B only
  2. B and C only
  3. A, B, C and D
  4. A, C and D Only
Ques. 3JEE Main 2026, 5 April (Morning Shift)

Correct statements from the following are: Choose the correct answer from the options given below:

  1. B, C and D Only
  2. C, D and E Only
  3. A, C and E Only
  4. A and E Only
Ques. 4JEE Main 2026, 4 April (Morning Shift)

Given below are two statements : In the light of the above statements, choose the correct answer from the options given below

  1. Both Statement I and Statement II are true
  2. Both Statement I and Statement II are false
  3. Statement I is true but Statement II is false
  4. Statement I is false but Statement II is true
Ques. 5JEE Main 2026, 28 January (Morning Shift)

Regarding the hydrides of group 15 elements EH3 (E = N, P, As, Sb), select the correct statement from the following : Choose the correct answer from the options given below :

  1. A, B & C only
  2. A, B, C & D
  3. A & D only
  4. B & C only
Ques. 6JEE Main 2026, 28 January (Evening Shift)

Given below are two statements : In the light of the above statements, choose the correct answer from the options given below :

  1. Statement I is false but Statement II is true
  2. Both Statement I and Statement II are false
  3. Statement I is true but Statement II is false
  4. Both Statement I and Statement II are true
Ques. 7JEE Main 2026, 24 January (Evening Shift)

One mole of Cl2(g) was passed into 2 L of cold 2 M KOH solution. After the reaction, the concentrations of Cl-, ClO- and OH- are respectively (assume volume remains constant)

  1. 0.5 M, 0.5 M, 0.5 M
  2. 1 M, 1 M, 1 M
  3. 0.5 M, 0.5 M, 1 M
  4. 0.75 M, 0.75 M, 1 M
Ques. 8JEE Main 2026, 23 January (Evening Shift)

Elements X and Y belong to Group 15. The difference between the electronegativity values of 'X' and phosphorus is higher than that of the difference between phosphorus and 'Y'. 'X' & 'Y' are respectively

  1. As & Bi
  2. Bi & N
  3. N & As
  4. As & Sb
Ques. 9JEE Main 2026, 22 January (Morning Shift)

Given below are two statements : In the light of the above statements, choose the correct answer from the options given below

  1. Statement I is true but Statement II is false
  2. Statement I is false but Statement II is true
  3. Both Statement I and Statement II are true
  4. Both Statement I and Statement II are false
Ques. 10JEE Main 2026, 22 January (Evening Shift)

Given below are two statements : In the light of the above statements, choose the correct answer from the options given below :

  1. Statement I is false but Statement II is true
  2. Statement I is true but Statement II is false
  3. Both Statement I and Statement II are false
  4. Both Statement I and Statement II are true
Ques. 11JEE Main 2026, 21 January (Evening Shift)

Given below are two statements : In the light of the above statements, choose the correct answer from the options given below :

  1. Both Statement I and Statement II are true
  2. Both Statement I and Statement II are false
  3. Statement I is false but Statement II is true
  4. Statement I is true but Statement II is false

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