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p-Block Elements (Group 15–18) · Question 6

JEE Main 2026 (Online) 24th January Evening ShiftMCQEasy📈 Topic in 13% papers+4−1
1

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

Answer

(3) 0.5 M, 0.5 M, 1 M

Solution

With cold dilute alkali (NCERT):

Cl2 + 2OH- Cl- + ClO- + H2O

Moles of OH- = 2 2 = 4 mol; 1 mol Cl2 uses 2 mol OH-.

Cl- = 1 mol, ClO- = 1 mol, OH- left = 2 mol

In 2 L: [Cl-] = 0.5 M, [ClO-] = 0.5 M, [OH-] = 1 M

Answer: (3)

JEE Main 2026 (Online) 24th January Evening Shift

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

2

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
JEE Main 2026 (Online) 23rd January Evening Shift
3

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
JEE Main 2026 (Online) 22nd January Morning Shift
4

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
JEE Main 2026 (Online) 22nd January Evening Shift
5

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
JEE Main 2026 (Online) 21st January Evening Shift
6

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. Statement I is true but Statement II is false
  3. Both Statement I and Statement II are false
  4. Statement I is false but Statement II is true
JEE Main 2025 (Online) 8th April Evening Shift
7

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

  1. Both Statement I and Statement II are true
  2. Statement I is true but Statement II is false
  3. Statement I is false but Statement II is true
  4. Both Statement I and Statement II are False
JEE Main 2025 (Online) 4th April Morning Shift
8

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 true
  3. Both Statement I and Statement II are false
  4. Statement I is true but Statement II is false
JEE Main 2025 (Online) 3rd April Morning Shift
9

The property/properties that show irregularity in first four elements of group-17 is/are Choose the correct answer from the options given below :

  1. A, B, C and D
  2. A and C only
  3. B only
  4. B and D only
JEE Main 2025 (Online) 2nd April Morning Shift
10

The nature of oxide (TeO2) and hydride (TeH2) formed by Te, respectively are:

  1. Reducing and basic
  2. Reducing and acidic
  3. Oxidising and acidic
  4. Oxidising and basic
JEE Main 2025 (Online) 2nd April Evening Shift
11

A group 15 element forms d - d bond with transition metals. It also forms a hydride, which is the strongest base among the hydrides of other group members that form d - d bond. The atomic number of the element is .

JEE Main 2025 (Online) 28th January Evening Shift

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