Organic Chemistry Some Basic Principles and Techniques Test

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Organic Chemistry Some Basic Principles and Techniques Test - 68

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Weekly Quiz Competition

Question 1
1 / -0

The maximum ease of abstraction of a hydrogen atom by a chlorine atom is show by?

A
${(C{H_3})_3}C - C{H_3}$

B
${(C{H_3})_3}C{H_2}$

C
${C_6}{H_5}C{H_5}$

D
$C{H_2} = CHCH$

Solution

solution:
all compounds are hydrocarbon so the reaction for abstraction of chlorine is callled chlorination
and here chlrone is present in radical form
so lets first check stabily of following hydrocarbons
$Benzyl> allyl> 3^o >2^o>1^o>-CH_3>Vinyl >phenyl$
see figure
hence the correct option: B
Question 2
1 / -0

Functional group order for Cahn Ingold Prelog preference is

A
I>II>III>IV

B
I>III>II>IV

C
IV>II>III>I

D
I>IV>III>II
Question 3
1 / -0

The number of $\sigma$ and $\pi$ bonds present in a molecule of tetracyanoethane $(CN)_{2}C=C(CN)_{2}$ are

A
$5\sigma$ and $9\pi$

B
$5\sigma$ and $8\pi$

C
$9\sigma$ and $9\pi$

D
$9\sigma$ and $7\pi$
Question 4
1 / -0

Write the IUPAC name of given compound ?

A
1 - Chloro- 2- methylbenzene

B
o - chlorotoluene

C
2 - chlorotoluene

D
both A and C
Question 5
1 / -0

Two complexes $\left[ Cr\left( { H }_{ 2 }O \right) _{ 6 } \right] { C }I_{ 3 }\left( A \right)$ and $\left[ Cr\left( { NH }_{ 3 } \right) _{ 6 } \right] { C }I_{ 3 }\left( B \right)$ are violet and yellow coloured, respectively. The incorrect statement regarding them is:

A
$\triangle _{ 0 }$ values of $(A)$ and $(B)$ are calculated from the energies of violet and yellow light, respectively.

B
$\triangle _{ 0 }$ value of $(A)$ is less than that of $(B)$ .

C
both absorb energies corresponding to their complementary colors.

D
both are paramagnetic with three unpaired electrons.

Solution
Question 6
1 / -0

$IUPAC$ name of (see figure) is :

A
Cyclobutane-1 carbaldehyde-2-carboxylate

B
2-Formylcyclobutane carboxylate

C
2-formylcyclobutyl methanoate

D
2-Methanoyloxy cyclobutane carbaldyde
Question 7
1 / -0

The correct comparison in B.P's of different carbon compounds of similar molar masses is:

A
$Propan-1-ol > Propanal > Propanone > Methoxymethane$

B
$Propan-1-ol > Propanone > Propanal > Methoxy \ ethane$

C
$$Propan -1-ol>Methoxy\ ethane >Propanone >Propanal$$

D
$Propanal>Propanol >Methoxy ethane >Propanone$

Solution
Question 8
1 / -0

Quinine is the most important alkaloid obtained from Cinchona bark. It's molecular formula is $C_{20}H_{24}N_2O_2$ . It may contain

A
5 double bond & 6 ring

B
6 double bond & 4 ring

C
6 double bond & 3 ring

D
7 double bond & 5 ring
Question 9
1 / -0

How many different type of functional group are present in this compound?

A
$7$

B
$6$

C
$5$

D
$4$
Question 10
1 / -0

Select the option having incorrect named compound(s) :
(I) 3, 3-dimethyl-1-hydroxycyclohexane (II) 4-ethoxy-2-methoxypentan-3-one
(III) 2-ethyl-1, 1-dimethylcyclopentane (IV) 4-amino-2-hydroxy-4-oxobutanal

A
I, II and III

B
III only

C
II and IV

D
II only