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D And F Block Elements Mock Tests

44 questions available

D And F Block Elements Mock Test 1

Questions: 30

D And F Block Elements Mock Test 2

Questions: 14

नमूना प्रश्न

NEET Chemistry
In acidic medium, potassium permanganate (KMnO₄) acts as an oxidizing agent and MnO₄⁻ is reduced to:
A Mn²⁺
B MnO₂
C MnO₄²⁻
D Mn
JEE Main Chemistry
Which of the following statements is correct regarding the lanthanoid contraction?
A Atomic radii of elements after lanthanides are smaller than expected
B Atomic radii of lanthanides increase across the series
C Lanthanoids show only +3 oxidation state
D Lanthanoids are all radioactive
JEE Main Chemistry
The number of unpaired electrons in Cr3+ (Cr = 24) is:
A 1
B 2
C 3
D 4
JEE Main Chemistry
The lanthanoid contraction is responsible for which of the following observations?
A The atomic radii of Zr and Hf are nearly identical
B The atomic radii of Na and K are similar
C The atomic radius of F is smaller than Cl
D The atomic radii of Li and Be are similar
JEE Main Chemistry
The colour of transition metal compounds is due to:
A charge transfer
B d-d electron transition
C p-s electron transition
D s-p electron transition
JEE Main Chemistry
Which of the following reactions is used in the Hall-Heroult process?
A Electrolytic reduction of Al₂O₃
B Electrolytic oxidation of Al₂O₃
C Thermal reduction of Fe₂O₃
D Electrolytic reduction of CuO
NEET Chemistry
What is the magnetic moment of Fe³⁺ (atomic number 26) in Bohr magnetons (B.M.)? Use μ = √[n(n+2)] B.M.
A 5.92 B.M.
B 4.90 B.M.
C 3.87 B.M.
D 1.73 B.M.
NEET Chemistry
Which of the following is the correct order of stability for +1 oxidation state of group 13 elements?
A Tl⁺ > In⁺ > Ga⁺ > Al⁺
B Al⁺ > Ga⁺ > In⁺ > Tl⁺
C Tl⁺ > Ga⁺ > In⁺ > Al⁺
D In⁺ > Tl⁺ > Ga⁺ > Al⁺

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