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d- and f-Block Elements

JEE Main 2024 (Online) 27th January Evening ShiftMCQEasy📈 Topic in 3% papers+4−1
Ques. 1JEE Main 2024, 27 January (Evening Shift)

Identify the incorrect pair from the following :

  1. Haber process - Iron
  2. Polythene preparation - TiCl4, Al(CH3)3
  3. Photography - AgBr
  4. Wacker process - PtCl2

Answer

(4) Wacker process - PtCl2

Solution

Uses of d-block metals / compounds as catalysts:

(A): Haber process, N2 + 3H2 2NH3, catalyst Fe ⇒ (A) is a correct pair

(B): Ziegler catalyst TiCl4 + Al(CH3)3 polymerises ethene to polythene ⇒ (B) is a correct pair

(C): AgBr is the light-sensitive salt of photographic film ⇒ (C) is a correct pair

(D): Wacker process, CH2=CH2 CH3CHO, uses PdCl2, not PtCl2 ⇒ (D) is the incorrect pair

Answer: (4)

Keep practising — d- and f-Block Elements

Ques. 2JEE Main 2024, 27 January (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. Both Statement I and Statement II are false
  2. Statement I is true but Statement II is false
  3. Both Statement I and Statement II are true
  4. Statement I is false but Statement II is true
Ques. 3JEE Main 2024, 27 January (Evening Shift)

Choose the correct option having all the elements with d10 electronic configuration from the following :

  1. 46Pd, 28Ni, 26Fe, 24Cr
  2. 29Cu, 30Zn, 48Cd, 47Ag
  3. 27Co, 28Ni, 26Fe, 24Cr
  4. 28Ni, 24Cr, 26Fe, 29Cu

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