CBSE 12TH CHEMISTRY - Online Test
Q1. The tanks used by divers are filled with air diluted with
Answer : Option B
Explaination / Solution:
Size of Helium is small so does not causes “Bents” to divers when the dive back to surface.
Q2.
Name the following amine as per the IUPAC system
Answer : Option B
Explaination / Solution:
This is 2-bromo-N-methylaniline.
Q3. Which of the following is thermally the most stable?
Answer : Option D
Explaination / Solution:
Stability of hydrides decreases down the group so most stable is H2O
Q4. The Wilfley table is used in the process of
Answer : Option A
Explaination / Solution:
Wilfley table is used in Hydraulic washing.
Q5. Packing efficiency in body centered cubic structure is
Answer : Option B
Explaination / Solution:
Q6. Vulcanisation makes rubber
Answer : Option C
Explaination / Solution:
Vulcanization makes rubber more elastic and more stiff.
Q7. Which of the following methods is based on distribution law?
Answer : Option B
Explaination / Solution:
Parkes process is a process for removing silver from Pb. It is an example of Liquid liquid extraction.s
Q8. The incorrect IUPAC name is
Answer : Option C
Explaination / Solution:
Numbering is done in a way that CO gets the lower number.
Q9. The correct IUPAC name of K2[Zn(OH)4] is
Answer : Option C
Explaination / Solution:
OH is hydroxo ligand. Name of ligand is named first.
Q10. A person suffering from depression is administered
Answer : Option A
Explaination / Solution:
A person suffering from depression is advised to administer iproniazid.
