FREE ONLINE CHEMISTRY TEST 04

1 / 10

Potassium dichromate (K₂Cr₂O₇) is an important compound of chromium. In acidic medium it acts as:

Reducing agent

Catalyst

Precipitating agent

Oxidising agent

2 / 10

Which of the following has the maximum magnetic moment?

Mn²⁺

Ti³⁺

V³⁺

Cr³⁺

3 / 10

Which one of the following is used in electroplating?

Cr

Ni

Cu

All ot the above

4 / 10

Which of the following elements does not show variable oxidation states?

Zn

Cu

Mn

Fe

5 / 10

Which transition element has the highest melting point?

Fe

W (Tungsten)

Mo

Ni

6 / 10

Which of the following is a coloured compound?

Sc₂O₃

ZnSO₄

TiO₂

CuSO₄·5H₂O

7 / 10

The catalytic property of transition metals is mainly due to:

Formation of volatile compounds

Low ionisation energy

Variable oxidation states

Presence of empty p-orbitals

8 / 10

Which of the following is used in the preparation of permanent magnets?

Fe + Co + Al

Fe + Ni + Co

Fe + W + Mo

Fe + Ni + Al

9 / 10

Which property is not shown by transition elements?

Formation of complexes

Formation of ionic hydrides

Variable oxidation states

Formation of coloured compounds

10 / 10

Why is Zn not considered a transition element?

It has a completely filled d-orbital

It has a high ionisation energy

It does not form coloured compounds

It does not show variable oxidation states

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FREE ONLINE CHEMISTRY TEST 04

FREE ONLINE CHEMISTRY TEST 04 for JEE, NEET, EAPCET EXAMS

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