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p-Block Elements (Group 13 & 14)

JEE Main 2024 (Online) 6th April Evening ShiftMCQEasy📈 Topic in 20% papers+4−1
Ques. 1JEE Main 2024, 6 April (Evening Shift)

The number of ions from the following that are expected to behave as oxidising agent is : Sn4+, Sn2+, Pb2+, Tl3+, Pb4+, Tl+

  1. 3
  2. 4
  3. 2
  4. 1

Answer

(3) 2

Solution

Inert pair effect: down groups 13 and 14 the lower oxidation state (ns2 pair unused) becomes more stable.

Sn: Sn4+ is the stable state ⇒ Sn2+ is a reducing agent, Sn4+ is not oxidising

Pb: Pb2+ is the stable state ⇒ Pb4+ Pb2+ ⇒ Pb4+ is oxidising ✓

Tl: Tl+ is the stable state ⇒ Tl3+ Tl+ ⇒ Tl3+ is oxidising ✓

∵ Pb2+ and Tl+ are already in their stable lower states, they are not oxidising

∴ 2 ions ( Pb4+, Tl3+)

Answer: (3)

Keep practising — p-Block Elements (Group 13 & 14)

Ques. 2JEE Main 2024, 6 April (Evening Shift)

Evaluate the following statements related to group 14 elements for their correctness. Choose the correct answer from the options given below :

  1. (A), (B) and (C) Only
  2. (A) and (B) Only
  3. (C), (D) and (E) Only
  4. (C) and (D) Only
Ques. 3JEE Main 2024, 5 April (Morning Shift)

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

  1. Statement I is incorrect but Statement II is correct
  2. Statement I is correct but Statement II is incorrect
  3. Both Statement I and Statement II are correct
  4. Both Statement I and Statement II are incorrect
Ques. 4JEE Main 2024, 5 April (Morning Shift)

The number of neutrons present in the more abundant isotope of boron is 'x'. Amorphous boron upon heating with air forms a product, in which the oxidation state of boron is 'y'. The value of x + y is .

  1. 9
  2. 6
  3. 4
  4. 3
Ques. 5JEE Main 2024, 5 April (Evening Shift)

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

  1. (A), (B), (C) and (E) only
  2. (C) and (E) only
  3. (A), (C) and (E) only
  4. (A) and (C) only
Ques. 6JEE Main 2024, 4 April (Evening Shift)

The correct order of the first ionization enthalpy is

  1. Ga > Al > B
  2. Tl > Ga > Al
  3. Al > Ga > Tl
  4. B > Al > Ga
Ques. 7JEE Main 2024, 1 February (Evening Shift)

Given below are two statements : In the light of the above statements, choose the most appropriate 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. Both Statement I and Statement II are true
  4. Statement I is true but Statement II is false
Ques. 8JEE Main 2024, 31 January (Morning Shift)

Consider the oxides of group 14 elements SiO2, GeO2, SnO2, PbO2, CO and GeO. The amphoteric oxides are

  1. SnO2, CO
  2. SiO2, GeO2
  3. SnO2, PbO2
  4. GeO, GeO2
Ques. 9JEE Main 2024, 31 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 true
  3. Both statement I and statement II are false
  4. Statement I is true but statement II is false
Ques. 10JEE Main 2024, 30 January (Morning Shift)

Aluminium chloride in acidified aqueous solution forms an ion having geometry

  1. Square planar
  2. Octahedral
  3. Trigonal bipyramidal
  4. Tetrahedral
Ques. 11JEE Main 2024, 29 January (Morning Shift)

Given below are two statements : In the light of the above statements, choose the most appropriate 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

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