CBSE 12TH CHEMISTRY - Online Test
Q1. Study of rate of chemical reaction is known as
Answer : Option D
Explaination / Solution:
Chemical Kinetics deals with rate of a Chemical reactions.
Q2. Which catalyst is used in contact process?
Answer : Option A
Explaination / Solution:
V2O5 is used as catalyst in contact process .
Q3. The following compounds are called
Answer : Option D
Explaination / Solution:
The following compound is tertiary amine.
Q4. Glycerol is
Answer : Option C
Explaination / Solution:
Glycerol and trihydroxypropane are common names. The IUPAC name is propane-1,2,3-triol. The common name glycerol comes from the root glyco- which means sweet. Glucose, glycogen, and glycerin (another name for glycerol) have the same etymology.
Glycerol and trihydroxypropane are common names. The IUPAC name is propane-1,2,3-triol. The common name glycerol comes from the root glyco- which means sweet. Glucose, glycogen, and glycerin (another name for glycerol) have the same etymology.
Q5. Example of solution of liquid in gas is
Answer : Option A
Explaination / Solution:
Solute is water (liquid) and solvent is gas( air).
Q6. For macromolecules to form, one more of the following criteria are essential
Answer : Option B
Explaination / Solution:
Macromolecule is made by joining smaller molecules(monomers)by covalent bond formation.
Q7. [Ar] 3d104s24p3 is the electronic configuration of
Answer : Option C
Explaination / Solution:
Arsenic is a group 15 element and its atomic no. is 33.
Q8. Metal which is found in free state is
Answer : Option B
Explaination / Solution:
Gold is least reactive metal.
Q9. 4d transition elements series are from
Answer : Option D
Explaination / Solution:
4d series arises from Y ( 4d15s2 )
Q10.
Give IUPAC names of the following compound:
Answer : Option A
Explaination / Solution:
The IUPAC of the above compound will be more clear if we open up the structure:
The structure of above compounds is:
Hence the IUPAC name of above compound is 4-Bromo-3-methylheptanal.
