Haloalkanes and Haloarenes Test

Result

Haloalkanes and Haloarenes Test - 71

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Weekly Quiz Competition

Question 1
1 / -0

Select the incorrect statement (s)

A
$${{\text{S}}_{\text{N}}}{\text{1}}$$ reactions also take place with some elimination.

B
$${{\text{S}}_{\text{N}}}{\text{2}}$$ reactions with chiral compounds gives racemic mixture.

C
$${{\text{S}}_{\text{N}}}{\text{1}}$$ reactions is faster in more polar aprotic solvents.

D
All of the above are incorrect statements.
Question 2
1 / -0

Given the correct order of initial $$T$$ or $$F$$ for the following statements. Use $$T$$ if the statement is true and use $$F$$ if the statement is false.
I. $$Me-CH=C=C=CH-Br$$ is optically active.
II. All optically active compounds are chiral.
III. All chiral pyramidal molecules are optically inactive.
IV. $$CH_{3}-CH_{2}-CH_{2}-COOH$$ and $$CH_{3}-CH_2-CH_{3}$$ are positional isomers.

A
$$TTTF$$

B
$$FTFT$$

C
$$FTFF$$

D
$$TFTT$$
Question 3
1 / -0

Product $$X$$ is :

A

B

C

D
Question 4
1 / -0

In chlorobenzene, $$-Cl$$ group attached to benzene acts as activating ortho-para directing due to:

A
(-I) effect = (+) R effect

B
(-I) effect > (+ R) effect

C
(-I) effect < (+ R) effect

D
(-I) effect < (- R) effect
Question 5
1 / -0

Which alcohol will give only $$E_{1}$$ reaction?

A

B

C

D
Question 6
1 / -0

Rank the alkyl halides in order of increasing reactivity in $$ E_2 $$ reaction.

A

B

C

D
none
Question 7
1 / -0

Write the product :

$${C_6}{H_5}-C{H_2}-CH=CH_2+HBr\rightarrow$$

A
$$
{C_6}{H_5} - CH(Br) - CH = C{H_2} $$

B
$$
{C_6}{H_5} - C{H_{}} - C{H_2}-CH_2(Br)$$

C
$$C_6H_5-CH_2-CH_1(Br)-CH_3$$

D
none of the above

Solution
Question 8
1 / -0

Compound $$C_4H_8Cl_2 \,(A)$$ on hydrolysis gives a compound $$C_4H_8O(B)$$ which reacts with hydroxylamine and does not give any test with Tollens regent . What are (A) and (B)?

A
$$1,1-$$ Dichlorobutane and butanal

B
$$2,2-$$ Dichlorobutane and butanal

C
$$1,1-$$ Dicholorobutane and butan $$-2-$$ one

D
$$2,2-$$ Dichlorobutane and butan $$-2-$$ one

Solution
Question 9
1 / -0

Alkyl halides can be obtained by all methods except?

A
$$CH_{3}-CH_{2}-CH_{3} + Cl_2 \xrightarrow [ UV\ light ]{ } $$

B
$$CH_{3}CH_{2}OH+HCl/ZnCl_{2}\rightarrow$$

C
$$C_{2}H_{5}OH+NaCl\rightarrow$$

D
$$CH_{3}COOAg+Br_{2}/CCl_{4}\rightarrow$$
Question 10
1 / -0

Which of the following do not form Grignard reagent?

A
$$CH_{3}F$$

B
$$CH_{3}Cl$$

C
$$CH_{3}Br$$

D
$$CH_{3}I$$

Solution