CBSE 12TH CHEMISTRY - Online Test
Q1. The condensation of hexamethylene diamine with adipic acid forms
Answer : Option A
Explaination / Solution:
For nylon 6,6 hexamethylenediamine and adipic acid are monomer unit.
Q2. Which compound is used in the preparation of caprolactam?
Answer : Option C
Explaination / Solution:
NH3 is used in preparation of caprolactum. Caprolactam is an organic compound with the formula (CH2)5C(O)NH. It is used to make Nylon 6 fiber and plastics.
Q3. Carbonate ore of iron is
Answer : Option D
Explaination / Solution:
FeCO3 is siderite.
Q4. Which is the most stable oxidation state of iron?
Q5. Ozonolysis of alkenes followed by reaction with zinc dust and water gives depending on the substitution pattern of the alkene
Answer : Option D
Explaination / Solution:
Reductive ozonolysis yields aldehyde or ketone.
Q6. Saponification is a process which involves
Answer : Option C
Explaination / Solution:
Saponification is process which involves the preparation of soaps.
Q7. Which of the following complex will give white precipitate with barium chloride solution?
Answer : Option D
Explaination / Solution:
BaSO4 is precipitated when SO42− ion is present outside the coordination sphere.
Q8. The reversible work done by a galvanic cell is equal to decrease in its Gibbs energy and therefore, if the emf of the cell is E and nF is the amount of charge passed and ΔrG is the Gibbs energy of the reaction, then
Answer : Option B
Explaination / Solution:
Q9. In the reaction, R – X + NaoR’ → ROR’ + X ( – ve ion) The main product formed is
Answer : Option A
Explaination / Solution:
This is normal substitution reaction.
Q10. Oxime is formed by treating glucose with
Answer : Option C
Explaination / Solution:
Oxime is combination of carbonyl group and and hydroxyl groups.
