Haloalkanes And Haloarenes Test

Result

Haloalkanes And Haloarenes Test - 4

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0

Directions For Questions

The following question has four choices, out of which ONLY ONE is correct.

...view full instructions

Consider the following reaction between alkyl halides, RX and alcoholic AgNO₃:
RX + Ag →R⁺ + Ag⁺ X^–
Which of the following statements is true about the above reaction?

A
For a given alkyl group, the reactivity decreases in the order RCl > RBr > RI.

B
For a given halogen atom, reactivity decreases in the order 3^o > 2^o > 1^o_^.

C
Racemisation does not occur.

D
Rearrangement of alkyl group always occurs.

Solution

The given reaction is S_N1 type.
For alkyl group, the reactivity decreases in the order 3^o > 2^o > 1^o. So, (2) is correct.
Question 2
1 / -0

Directions For Questions

The following question has four choices out of which ONLY ONE is correct.

...view full instructions

Bottles containing C₆H₅I and C₆H₅CH₂I lost their original labels. They were labelled A and B for testing. A and B were separately taken in a test tube and boiled with NaOH solution. The end solution in each tube was made acidic with dilute HNO₃ and then some AgNO₃ solution was added. Substance B gave a yellow precipitate. Which of the following statements is true for this experiment?

A
A was C₆H₅I.

B
A was C₆H₅CH₂I.

C
B was C₆H₅I.

D
Addition of NHO₃ was unnecessary.

Solution

C₆H₅I will not respond to silver nitrate test because C - I bond has a partial double bond character.
Question 3
1 / -0

Which of the following statements is incorrect for freons?

A
They are highly toxic and cause skin cancer if contacted.

B
They are rather inert substances, but react with ozone.

C
They are used in extinguishing fire.

D
Their use in refrigerators has been banned.

Solution

Freons are not toxic in nature.