Haloalkanes and Haloarenes - Online Test
Q1. Boron is unable to form BF6− ion.
Answer : Option D
Explaination / Solution:
Boron cannot expand its covalency due to absence of d orbitals.
Q2. Toluene reacts with a halogen in the presence of iron (III) chloride giving ortho and para halo compounds. The reaction is
Answer : Option C
Explaination / Solution:
This is example of electrophilic aromatic substitution (EAS) reaction.Sincle Cl ion replaces hydrogen atom and here FeCl3 acts as halogen carriers.
Q3. 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.
Q4. Tetrachloromethane (Carbon tetrachloride)is
Answer : Option B
Explaination / Solution:
CCl4 is degreasing agent.
Q5. Triiodomethane (Iodoform) is
Answer : Option C
Explaination / Solution:
The compound finds small scale use as a disinfectant.Around the beginning of the 20th century it was used in medicine as a healing and antiseptic dressing for wounds and sores, although this use is now superseded by superior anticeptics..
Q6. The most common freons in industrial use is manufactured by
Answer : Option D
Explaination / Solution:
Most common Freon is synthesized by Swartz reaction.
Q7. Dichloromethane (Methylene chloride) is
Answer : Option B
Explaination / Solution:
CHCl2 is organic solvent
Q8. Freons diffuses unchanged into the stratosphere. It can
Answer : Option D
Explaination / Solution:
Freons disturbs the natural ozone balance and initial free radical rxn.
Q9. Chloroform is in closed dark coloured bottles completely filled
Answer : Option D
Explaination / Solution:
In presence of light choloroform oxidizes to form phosgene , which is poisonous gas.
Q10. Anisole reacts with a mixture of concentrated sulphuric and nitric acids to yield a mixture of ortho and paranitroanisole
