Haloalkanes & Haloarenes - Free MCQ Practice Test with solutions, JEE Chapter

The force of attraction between the alkyl halide and water is weaker and cannot overcome the force of attraction between alkyl halide and alkyl halide as also that of water and water molecules.

Most common Freon is synthesized by Swartz reaction.
The correct answer is:

4. By Swarts reaction

Explanation:

• Swarts reaction is commonly used for the manufacture of freons (chlorofluorocarbons, CFCs), where halogen atoms in a molecule are replaced by fluorine atoms using antimony trifluoride (SbF3) or similar reagents.

• Wurtz reaction: Typically used to couple two alkyl halides to form a longer carbon chain.

• Sandmeyer reaction: Used for the substitution of an aryl diazonium salt with a halogen or other group.

• Fittig reaction: Used to couple aryl halides to form biaryls.

So, Swarts reaction is the correct choice for the production of freons.

This is SN² reaction.

AgCN is covalent in nature while KCN is ionic so KCN produces CN- in the solution.

CHCl₂ is organic solvent

When ethyl bromide reacts with alcoholic KCN, propane nitrile is obtained as main product.

These all are covalent compounds hence are soluble in organic solvents.

This is normal substitution reaction.

Grignard reagent abstracts acidic hydrogen from H2O forming alkane.

Chloramphenicol is antityphoid drug.

This is electrophilic addition reaction following Markovnikoffs rule.

R—MgX is very reactive.

The correct answer is Option C.

The general formula for calculating stereoisomers is: 2ⁿ, where n is the number of chiral centers.
Stereoisomers are compounds with the same chemical formula but different spatial arrangement and chiral centers are carbons that are bonded to 4 different groups. So, the possible no of optical isomers can be 2ⁿ.

Chlorination of ethane is carried out in the presence of Ultraviolet light to form 1,2-hexachloro ethane. 

Chloroquine is a synthetic halogen compound.

Halide exchange reaction is Finkelstein reaction in which alkyl chloride is converted to alkyl iodide.

At position 1 chloro group is present and at 2-methylpropyl is present.

CCl₄ is symmetrical hence dipole moment is zeo.

I⁻is very good nucleophile.

The correct answer is option C
Chlorination of ethane is carried out in the presence of Ultraviolet light to form 1,2-hexachloroethane.                             
CH₃CH₃   ----- UVlight ---->      CCl₃CCl₃
So, the correct answer is C.
 

A hydrocarbon with the molecular formula, C5H10 belongs to the group with a general molecular formula CnH2n. Therefore, it may either be an alkene or a cycloalkane. Since hydrocarbon does not react with chlorine in the dark, it cannot be an alkene. Thus, it should be a cycloalkane. Further, the hydrocarbon gives a single monochloro compound, C5H9Cl by reacting with chlorine in bright sunlight. Since a single monochloro compound is formed, the hydrocarbon must contain H−atoms that are all equivalent. Also, as all H−atoms of a cycloalkane are equivalent, the hydrocarbon must be a cycloalkane. Hence, the said compound is cyclopentane.

Phosgene is also called carbonyl chloride.
Both A and C are correct

Neopentane has all same type of hydrogen and has molecular weight 72u

The physical properties of isomers are influenced by their molecular symmetry and the strength of intermolecular forces. p-Dichlorobenzene is the para isomer, which has a more symmetrical structure compared to the ortho and meta isomers. This symmetry allows the molecules to pack more efficiently in the solid state, resulting in a higher melting point. Additionally, the symmetrical arrangement reduces the overall polarity of the molecule, leading to lower solubility in polar solvents. Therefore, p-Dichlorobenzene has a higher melting point and lower solubility than its o‑ and m‑isomers.