TN State Board Samacheer Kalvi Online Test for 12th Std - Chemistry - English - Transition and Inner Transition Elements

Question 1 Of 10

The most common oxidation state of actinoids is (PTA -2)

+2 +3 +4 +6

Question 2 Of 10

Chromyl chloride when dissolved in NaOH solution gives yellow solution. The yellow solution contains (PTA – 3)

Cr2O72- CrO42- CrO5 Cr2O3

Question 3 Of 10

Which of the following is coloured

Cu+ Cu2+ Ti4+ V5+

Question 4 Of 10

Which of the following forms colourless compound?

Sc3+ V3+ Ti3+ Cr3+

Question 5 Of 10

All ferromagnetic substances

Can be magnetised Can be electrolysed Have completely filled d – orbitals None

Question 6 Of 10

According to Ellingham diagram, the oxidation reaction of carbon to carbon monoxide may be used to reduce which one of the following oxides at lowest temperature?

Al2O3 Cu2O MgO ZnO

Question 7 Of 10

Paramagnetism in the substance increases as

The number of paired electrons increases The number of unpaired electrons increases The number of unpaired electrons decreases The number of paired electrons decreases

Question 8 Of 10

Which one of the following ions has the same number of unpaired electrons as present in V3+?

Ti3+ Fe3+ Ni2+ Cr3+

Question 9 Of 10

Which of the following oxidation states is most common among the lanthanoids?

4 2 5 3

Question 10 Of 10

The lanthanoids contraction is responsible for the fact that

Zr and Y have the same radius Zr and Nb have similar oxidation state Zr and Hr have almost the same radius Zr and Zn have same oxidation state

Tamil Nadu State Board ( Samacheer Kalvi ) Online Test based on Book Back Questions - 12th Standard Chemistry - English Medium - Transition and Inner Transition Elements

Samacheer Kalvi 12th Chemistry - Transition and Inner Transition Elements - Book Back Questions in English Medium