CBSE 12TH CHEMISTRY - Online Test
Q1. The drug which can act both as an analgesic and antipyretic is
Answer : Option A
Explaination / Solution:
Asprin can act as both analgesic and antipyretic
Q2. The effective atomic number of Fe in Fe(CO)5 is
Answer : Option A
Explaination / Solution:
26+2(5)=36
Q3. According to Faraday’s Second Law of Electrolysis the amounts of different substances liberated by the same quantity of electricity passing through the electrolytic solution are proportional
Answer : Option B
Explaination / Solution:
The amounts of different substances liberated by the same quantity of electricity passing through the electrolytic solution are proportional to their chemical equivalent weights.
Q4. Carbon – halogen bond of alkyl halides is responsible for their nucleophilic substitution, elimination and their reaction with metal atoms to form organometallic compounds because of their
Answer : Option D
Explaination / Solution:
R—X is polar.
Q5. The expression which relates the rate of reaction to the concentration of the reactants are called
Answer : Option B
Explaination / Solution:
Rate law states that rate of reaction is dependent on concentration of reactant raise to power order of reaction.
Q6. Fog is a colloidal solution of
Answer : Option A
Explaination / Solution:
Dispersed phase is liquid, dispersion medium is gas.
Q7. Glycogen is formed in
Answer : Option C
Explaination / Solution:
Glycogen is how energy is stored in animals
Q8. Which of the following reactions will not result in the formation of carbon-carbon bond?
Answer : Option D
Explaination / Solution:
The Cannizzaro reaction, named after its discoverer Stanislao Cannizzaro, is a chemical reaction that involves the base-induced disproportionation of an aldehyde lacking a hydrogen atom in the alpha position.
This redox disproportionation of non-enolizable aldehydes to carboxylic acids and alcohols is conducted in concentrated base.
Q9. The nitration reaction of amines can be controlled in order to obtain the desired nitro derivative as the major product by:
Answer : Option D
Explaination / Solution:
The activating power of aniline can be controlled by acetylation reaction to get desired product.
Q10. Solubility of which gas is maximum in water?
Answer : Option B
Explaination / Solution:
NH3 forms hydrogen Bonding with water.
