Hydrocarbons

NEET Chemistry · 53 questions · Page 6 of 6 · Click an option or "Show Solution" to reveal answer

Q51

Which of the following reactions will yield 2, 2-dibromopropane?

A CH3 - CH = CH2 + HBr

\to

B CH3 - C

\equiv

CH + 2HBr

\to

C CH3CH = CHBr + HBr

\to

D CH

\equiv

CH + 2HBr

\to

Correct Answer

Option B

Solution

The reaction follows Markownikoff rule which states that when unsymmetrical reagent adds across unsymmetrical double or triple bond the negative part adds to carbon atom having lesser number of hydrogen atoms.

Q52

The alkane from below having two secondary hydrogens is :

A 2,2,4,5-Tetramethylheptane

B 2,2,4,4-Tetramethylhexane

C 4-Ethyl-3,4-dimethyloctane

D 2,2,3,3-Tetramethylpentane

Correct Answer

Option D

Solution

4-Ethyl-3,4-dimethyloctane

Q53

\stackrel{\bullet}{\mathrm{Cl}}+\mathrm{CH}_{4} \rightarrow \mathrm{A}+\mathrm{B}

A and B in the above atmospheric reaction step are :

\mathrm{C}_{2} \mathrm{H}_{6}

and

\mathrm{Cl}_{2}

\stackrel{\bullet}{\mathrm{C}} \mathrm{HCl}_{2}

and

\mathrm{H}_{2}

\stackrel{\bullet}{\mathrm{C}}\mathrm{H}_{3}

and

\mathrm{HCl}

\mathrm{C}_{2} \mathrm{H}_{6}

and

\mathrm{HCl}

Correct Answer

Option C

Solution

\stackrel{\bullet}{\mathrm{Cl}}+\mathrm{CH}_4 \longrightarrow {\stackrel{\bullet}{\mathrm{C}}}\mathrm{H}_3+\mathrm{HCl}

Ready for a full NEET mock test? Timed · full syllabus · instant results

Take a Mock Test →