CBSE 12TH CHEMISTRY - Online Test
Q1. Which of the following oxides reacts with both HCl and NaOH?
Answer : Option B
Explaination / Solution:
ZnO is an amphroteric oxide.
Q2. Which among the following is a chemical process?
Answer : Option B
Explaination / Solution:
Leaching is a process in which ore is digested with a solvent to form a soluble complex.
Q3. Which of the following lattices has the highest packing efficiency?
Answer : Option B
Explaination / Solution:
Packing Efficiency is highest 74%.
Q4. Which of the following polymers can have strong intermolecular forces?
Answer : Option B
Explaination / Solution:
Rubber and polystyrene have strong intermolecular forces.
Q5. Haemoglobin and chlorophyll contain
Answer : Option D
Explaination / Solution:
Hb contains Fe and Chlorophyll contains Mg.
Q6. Ketones are reduced to the corresponding alcohols by catalytic hydrogenation to form
Answer : Option B
Explaination / Solution:
Ketones reduction give secondary alcohols.
Q7. Which of the following compound would exhibit coordination isomerism?
Answer : Option D
Explaination / Solution:
Coordination isomerism is exhibited the the compounds in which cationic and anionic species is coordination complex.
Q8. A deodorant is used to reduce body odour due to bacterial decomposition because it is an
Answer : Option C
Explaination / Solution:
A deodorant is intended to inhibit bacterial growth with the use of antiseptic.
Q9. Conductivity of 0.00241 M acetic acid is 7.896 × S . If for acetic acid is 390.5 S , what is its dissociation constant?
Answer : Option D
Explaination / Solution:
Q10. p,p’ – Dichlorodiphenyltrichloroethane is a
Answer : Option C
Explaination / Solution:
p,p’ –Dichlorodiphenyltrichloroethane (DDT) is a colorless, tasteless, and almost odorless known for its pesticidal properties and environmental impacts.
