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d- and f-Block Elements

JEE Main 2025 (Online) 23rd January Evening ShiftMatchingEasy📈 Topic in 11% papers+4−1
Ques. 1JEE Main 2025, 23 January (Evening Shift)

Match List - I with List - II Choose the correct answer from the options given below :

  1. A-IV, B-II, C-III, D-I
  2. A-IV, B-III, C-I, D-II
  3. A-III, B-I, C-IV, D-II
  4. A-III, B-IV, C-II, D-I

Answer

(2) A-IV, B-III, C-I, D-II

Solution

Bronze = Cu + Sn (IV); Brass = Cu + Zn (III); UK silver coin = Cu + Ni (I); Stainless steel = Fe, Cr, Ni, C (II)

∴ A-IV, B-III, C-I, D-II

Answer: (2)

Keep practising — d- and f-Block Elements

Ques. 2JEE Main 2025, 23 January (Evening Shift)

Consider the following reactions K2Cr2O7 [-H2O]KOH [A] [-H2O]H2SO4 [B] + K2SO4 The products [A] and [B], respectively are :

  1. K2Cr(OH)6 and Cr2O3
  2. K2CrO4 and Cr2O3
  3. K2CrO4 and K2Cr2O7
  4. K2CrO4 and CrO
Ques. 3JEE Main 2025, 22 January (Morning Shift)

Lanthanoid ions with 4f7 configuration are : Choose the correct answer from the options given below :

  1. B and E only
  2. B and C only
  3. A and D only
  4. A and B only

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