CBSE 12TH CHEMISTRY - Online Test
Q1. The IUPAC name of AlCl3.4(EtOH) is
Answer : Option D
Explaination / Solution:
This is double salt so name is written in sequential manner.
Q2. Tranquilisers act as antidepressant by
Answer : Option A
Explaination / Solution:
Transquilisers decreases the degradation of noradrenaline.
Q3. What compound is produced when cyclohexene is treated with concentrated KMnO4?
Answer : Option C
Explaination / Solution:
Conc KMnO4 will cause oxidation and ring opening forming adipic acid.
Q4.
Maximum number of molecules of CH3I that can react with a molecule of CH3NH2 is
Answer : Option D
Explaination / Solution:
CH3NH2 can act as nucleophile to cause substitution reaction. (CH3)4N+ this is formed when 3 moles of CH3NH2 reacts with methyl halide.
Q5. The temperature coefficient of most of the reactions lies between
Answer : Option C
Explaination / Solution:
For every 100 rise in temperature rate of reaction increases by factor of 2 or 3.
Q6. Which among the following substances is an example of multimolecular colloids?
Answer : Option A
Explaination / Solution:
Multimolecular colloids are formed when a large number of atoms or molecules of a substance aggregate together to form speices having size in colloidal range. sulphur sol contains a thousand of S8 molecules.
Q7. Ferrous sulphate on heating gives
Answer : Option B
Explaination / Solution:
FeSO4 on heating gives SO2 and SO3
