d and f Block Test

Question 1
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One or More than One Options Correct Type

Direction (Q. Nos. 1 - 5) This section contains 5 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONE or MORE THAN ONE are correct.

Q.

Identify the pairs in which one covalent radii of elements are almost similar.

A
Nb and Ta

B
Mo and W

C
La and Lu

D
Sc and Y

Question 2
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Which one is of the following is the lightest transition element?

A
Ti

B
Sc

C
Fe

D
Hg

Question 3
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Which of the following have pseudo noble gas configuration?

A
Cu²⁺

B
Zn²⁺

C
Ag⁺

D
Au³⁺

Question 4
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Which one of the following is a diamagnetic ion?

A
CO²⁺

B
Cu²⁺

C
Mn²⁺

D
Sc³⁺

Question 5
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The pair of ions that have same electronic configuration

A
Fe²⁺ and Mn²⁺

B
Fe²⁺ and Co³⁺

C
Fe³⁺ and Co³⁺

D
V²⁺ and Cr³⁺

Question 6
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Comprehension Type

Direction (Q. Nos. 16 and 17) This section contains a paragraph, describing theory, experiments, data, etc. Two questions related to the paragraph have been given. Each question has only one correct answer among the four given options (a), (b), (c) and (d).

Passage

The atomic and ionic radii for transition elements are smaller than their corresponding s-block elements and are greater than their corresponding p-block elements. The atomic and ionic radii transition elements for a given series show decreasing trend for first elements constant in the middle and slight increase towards the end. This is due to the combined effect of increasing effective nuclear charge and increasing screening effect along the period.
The atomic and ionic radii of 4d series are greater than 3d series. However, the elements of 4d series and 5d series have almost similar sizes due to lanthanide contraction. Transition elements have low atomic volumes, high densities, high melting points.

Q.

Which pair of elements has nearly same atomic siz e?

A
Sc and Y

B
V and Zr

C
Zr and Hf

D
La and Y

Question 7
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Passage

The atomic and ionic radii for transition elements are smaller than their corresponding s-block elements and are greater than their corresponding p-block elements. The atomic and ionic radii transition elements for a given series show decreasing trend for first elements constant in the middle and slight increase towards the end. This is due to the combined effect of increasing effective nuclear charge and increasing screening effect along the period.
The atomic and ionic radii of 4d series are greater than 3d series. However, the elements of 4d series and 5d series have almost similar sizes due to lanthanide contraction. Transition elements have low atomic volumes, high densities, high melting points.

Q.

The metal with high melting point in 3d series is

A
Cu

B
Zn

C
Cr

D
Fe

Question 8
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Matching List Type

Choices for the correct combination of elements from Column I and Column II are given as options (a), (b), (c) and (d), out of which one is correct.

Q.

Match the Column I with Column II and mark the correct option from codes given below.

A

B

C

D

Question 9
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Which one of the following ions exhibits colour in aqueous solution

A
Sc³⁺

B
Ni²⁺

C
Ti⁴⁺

D
Zn²⁺

Question 10
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One Integer Value Correct Type

Direction (Q. Nos. 10 - 15) This section contains 4 questions. When worked out will result in an integer from 0 to 9 (both inclusive).

Q.

The number of elements that do not have completely filled d subshell among the elements Ni, Pd, Pt, Cu, Ag, Au, Zn, Cd and Hg are

A
2

B
3

C
5

D
1

Question 11
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Total spin of the electrons in a chromium atom is

A
1

B
2

C
3

D
4

Question 12
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Number of electrons with l = 2 and s = 1/2 in zinc atom are

A
1

B
2

C
3

D
5

Question 13
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Number of elements that generally do not show variable valencies Cu, Zn Au, Cd, Sc, La, Pt, Co.

A
1

B
4

C
2

D
3

Question 14
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During the process of electrolytic refining of copper, some metals present as impurity settle as ‘anode mud ’These are

A
Sn and Ag

B
Pb and Zn

C
Ag and Au

D
Fe and Ni

Question 15
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Statement Type

Direction (Q. No. 25) This section is based on Statement I and Statement II. Select the correct answer from the codes given below.

Q.

Statement I : The highest oxidation state of osmium is +8.

Statement II : Osmium is a 5-d block element.

A
Both Statement I and Statement II are correct and Statement II is not the correct explanation of Statement I

B
Both Statement I and Statement II are correct but Statement II is the correct explanation of Statement I

C
Statement I is correct but Statement II is incorrect

D
Statement II is correct but Statement I is incorrect

Submit Test

d and f Block T...

Question 1

Nb and Ta

Mo and W

La and Lu

Sc and Y

Question 2

Ti

Sc

Fe

Hg

Question 3

Cu2+

Zn2+

Ag+

Au3+

Question 4

CO2+

Cu2+

Mn2+

Sc3+

Question 5

Fe2+ and Mn2+

Fe2+ and Co3+

Fe3+ and Co3+

V2+ and Cr3+

Question 6

Sc and Y

V and Zr

Zr and Hf

La and Y

Question 7

Cu

Zn

Cr

Fe

Question 8

Question 9

Sc3+

Ni2+

Ti4+

Zn2+

Question 10

2

3

5

1

Question 11

1

2

3

4

Question 12

1

2

3

5

Question 13

1

4

2

3

Question 14

Sn and Ag

Pb and Zn

Ag and Au

Fe and Ni

Question 15

Both Statement I and Statement II are correct and Statement II is not the correct explanation of Statement I

Both Statement I and Statement II are correct but Statement II is the correct explanation of Statement I

Statement I is correct but Statement II is incorrect

Statement II is correct but Statement I is incorrect

User

Question Analysis

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Cu²⁺

Zn²⁺

Ag⁺

Au³⁺

CO²⁺

Cu²⁺

Mn²⁺

Sc³⁺

Fe²⁺ and Mn²⁺

Fe²⁺ and Co³⁺

Fe³⁺ and Co³⁺

V²⁺ and Cr³⁺

Sc³⁺

Ni²⁺

Ti⁴⁺

Zn²⁺