Chemistry – Class 12 Mock Test 5

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Question 1 of 10

1. What is the general electronic configuration of the lanthanides?

(n-2)f ^1-14 (n-1)d ^1-10 ns²

(n-2)f ^1-14 (n-1)d ^1-2 ns²

(n-2)f ^1-14 (n-1)d ^0-1 ns²

(n-2)f ^1-14 (n-1)d ⁰ ns²

Question 1 of 10

Question 2 of 10

2. Which of the following has the highest atomic number?

Lanthanum

Cadmium

Titanium

Scandium

Question 2 of 10

Question 3 of 10

3. Which of the following is not a property of a transition metal?

They are lustrous

They have low boiling points

They are malleable

They are ductile

Question 3 of 10

Question 4 of 10

4. The d-electrons affect the properties of the transition elements to a great extent.

True

False

Question 4 of 10

Question 5 of 10

5. Werner postulated that octahedral, tetrahedral and square planar geometrical shapes are more common in coordination compounds of ________

transition metals

actinides

alkali metals

lanthanides

Question 5 of 10

Question 6 of 10

6. Which of the following tests does AgCl not answer?

Acidic test

Alkaline test

Chromyl chloride test

Baeyer’s reagent test

Question 6 of 10

Question 7 of 10

7. Identify the correct formula for hexaaquamanganese(II) ion.

[Mn(H₂O)₆]⁺²

[Mn(H₂O)₆]²⁺

[Mn(H₂O)₆]^2-

[Mn₂(H₂O)₆]⁺

Question 7 of 10

Question 8 of 10

8. Which of the following are d-block elements, but not regarded as transition elements?

Ru, Ag, Au

Zn, Cd, Hg

Zn, Ru, Pd

Cd, Rh, Pd

Question 8 of 10

Question 9 of 10

9. Which of the following element belongs to the third transition series of the periodic table?

Question 9 of 10

Question 10 of 10

10. Which of the following statement is correct?

The properties of various actinoids are very similar

D-block elements show irregular and erratic chemical properties

4f and 5f orbitals are equally shielded

4d and 5d orbitals are equally shielded

Question 10 of 10