CBSE 12TH CHEMISTRY - Online Test
Q1. A group of atoms can function as a ligand only when
Answer : Option D
Explaination / Solution:
Ligands are electron donors.
Q2. Penicillin Fungus was discovered by
Answer : Option D
Explaination / Solution:
Penicillin Fungus was discovered by Alexander Flemming.
Q3. Fundamental difference between an electrolytic cell and the galvanic cell is that in an electrolytic cell free energy
Answer : Option C
Explaination / Solution:
In electrolytic cell electrical energy is converted into chemical energy.
Q4. The following (CH3)2CHCH2CH2Cl
(CH3)2CHCH(Cl)CH3
(CH3)2C(Cl)CH2CH3
CH3CHCH2(Cl)CH2CH3
are the possible structural isomers expected to be formed if one of the hydrogen atoms is replaced by chlorination. The original compound is
(CH3)2CHCH(Cl)CH3
(CH3)2C(Cl)CH2CH3
CH3CHCH2(Cl)CH2CH3
are the possible structural isomers expected to be formed if one of the hydrogen atoms is replaced by chlorination. The original compound is
Answer : Option B
Explaination / Solution:
this is the original compound.
this is the original compound.
Q5. The spatial arrangement of the molecule is denoted by
Answer : Option A
Explaination / Solution:
D is dextrotatry , L is leavorotatry.
Q6. Rate of reaction for the combustion of propane is equal to
Answer : Option D
Explaination / Solution:
Q7. The example of heteropolar solution is
Answer : Option C
Explaination / Solution:
Protein solution is an example heteropolar solution.
Q8. The following amine can be classified as (C2H5)2NH
Answer : Option B
Explaination / Solution:
Nitrogen is attached is two carbons, so this is asecondary amine.
Q9.
Give IUPAC names of the following compound:
Answer : Option C
Explaination / Solution:
Longest chain has three carbons and at 2nd position both –OH and –CH3 group are attachted.
Q10. For ideal solution the enthalpy of mixing of the pure components to form the solution is
Answer : Option D
Explaination / Solution:
For ideal solution there is no evolution or absorption of heat on mixing.
