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1
MHT CET 2021 21th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which property from following is NOT exhibited by interstitial compounds?

A
Their melting points are higher than pure metal.
B
Their densities are less than parent metal.
C
Their chemical properties are different than parent metal.
D
These are hard and good conductors of heat and electricity.
2
MHT CET 2021 20th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

What are the formulae of the compounds formed when lanthanoids (Ln) react with nitrogen and halogen respectively?

A
$$\mathrm{LnN}$$ and $$\mathrm{LnX}_3$$
B
$$\mathrm{LnN}_3$$ and $$\mathrm{LnX}$$
C
$$(\mathrm{Ln})_2 \mathrm{N}_3$$ and $$\mathrm{LnX}_2$$
D
$$\mathrm{LnN}$$ and $$\mathrm{LnX}$$
3
MHT CET 2021 20th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which among following properties of lanthanoids is NOT true?

A
These are good conductors of heat and electricity.
B
These are strongly paramagnetic.
C
These all are non-radioactive.
D
These have coordination number greater than 6 .
4
MHT CET 2021 20th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which among the following elements has completely filled 4d-orbital?

A
Ag
B
Cd
C
Sc
D
Zr
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