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