The d- and f- Block Elements - Online Test
Q1. Vitamin B12 contains
Answer : Option C
Explaination / Solution:
Vitamin B12 containsCo3+
Q2. Which is least soluble in water?
Answer : Option C
Explaination / Solution:
Ag2S is least soluble in water.
Q3. A reduction in the atomic size with increase in atomic number is characteristic of the elements of
Answer : Option C
Explaination / Solution:
In f block elements with increase in atomic number atomic radii decreases smoothly.
Q4. Nitrous oxide is evolved when Zn is treated with
Answer : Option D
Explaination / Solution:
Q5. Ferrous sulphate on heating gives
Answer : Option B
Explaination / Solution:
FeSO4 on heating gives SO2 and SO3
Q6.
In the reaction,
A is
A is
Answer : Option B
Explaination / Solution:
Q7. Ag+ ion is isoelectronic with
Answer : Option B
Explaination / Solution:
Ag+ is isoelectronic with Cd2+
Q8. Ni2+ in traces can be tested using
Answer : Option B
Explaination / Solution:
Ni forms complex with DMG which is red in color.
Q9. The compound which is widely used as a white pigment is
Answer : Option D
Explaination / Solution:
ZnO is white in color.
Q10. The catalyst used in Deacon’s process is
Answer : Option A
Explaination / Solution:
CuCl2 is used as catalyst in Decon’s Process.
