When thiocyanate ions are added to the ferric solution, a deep red colour is obtained. It is due to the presence of:

1. Fe[Fe(CN)6]

2. [Fe(H2O)5(OH)]2+

3. Fe2+

4. [Fe(SCN)]2+

View Answer

Correct Answer :

[Fe(SCN)]²⁺

Explanation :
No Explanation available for this question

The mineral from which potassium permanganate is manufactured is

1. Pyrolusite

2. Hausmannite

3. Braunite

4. Manganite

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Correct Answer :

Pyrolusite

Explanation :
No Explanation available for this question

Which of the following ions exists as dimer

1. Hg2+

2. Cu2+

3. Hg+

4. Cd2+

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Correct Answer :

Hg⁺

Explanation :
No Explanation available for this question

Which of the following has lowest magnetic moment

1. 3d2

2. 3d7

3. 3d9

4. 3d3

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Correct Answer :

3d⁹

Explanation :
No Explanation available for this question

Which of the following has lowest density

1. Ni

2. Sc

3. Zn

4. Ti

View Answer

Correct Answer :

Explanation :
No Explanation available for this question

Which metal sulphide is not black

1. CuS

2. ZnS

3. NiS

4. CoS

View Answer

Correct Answer :

ZnS

Explanation :
No Explanation available for this question

The element which exhibits variable valency is

1. Iron

2. Zinc

3. Lanthanum

4. Aluminium

View Answer

Correct Answer :

Iron

Explanation :
No Explanation available for this question

The calculated spin magnetic moment of Fe (II) is

1. 4.90 B.M.

2. 4.47 B.M

3. 5.91 B.M

4. 0

View Answer

Correct Answer :

4.90 B.M.

Explanation :
No Explanation available for this question

Lithopone is:

1. BaS+ZnSO4

2. ZnS+BaSO4

3. BaSO4+ZnCO3

4. BaCO3+ZnSO4

View Answer

Correct Answer :

ZnS+BaSO4

Explanation :
No Explanation available for this question

The most important alloying element in the manufacture of steel is

1. Chromium

2. Nickel

3. Carbon

4. Manganese

View Answer

Correct Answer :

Carbon

Explanation :
No Explanation available for this question

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