Alcohols Phenols and Ethers Test

Result

Alcohols Phenols and Ethers Test - 51

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following combinations can be used for the preparation of cis vic diol?

A
Alkene, Baeyer reagent

B
Alkene ,$$OsO_{4}$$

C
Alkene, MMPP and $$H_{2}O/H$$

D
Both of (A) and (B)
Solution
Osmium tetroxide (OsO4) is a volatile liquid that is most useful for the synthesis of 1,2 diols from alkene.
The OsO₄ is a catalyst. It reacts with the π electrons of the alkene in a syn addition to form a cyclic osmate ester.
The OH⁻ hydrolyzes the ester. This forms the cis-diol and H₂OsO₄.
Question 2
1 / -0

Which of the following compounds when heated with CO at $$ 150^oC $$ and 500 atm pressure in presence of $$ BF_3 , $$ forms ethyl propionate ?

A
$$ C_2H_5OH $$

B
$$ CH_3OCH_3 $$

C
$$ C_2H_5OC_2H_5 $$

D
$$ CH_3OC_2H_5 $$

Solution
Question 3
1 / -0

IUPAC name of compound is:

A
5-ethyl-3,3-dimethyl cyclohex-en-6-ol

B
6-Ethyl-4,4-dimethyl cyclohex-2-en-1-ol

C
2-ethyl-4,4-dimethyl cyclohex-en--enol

D
6-ethyl-4,4-dimethyl cyclohexenol

Solution
Question 4
1 / -0

Ethene on reaction with cold & dilute alkaline $$KMnO_4$$ gives ?

A
Ethylene glycol

B
Propylene glycol

C
Acetone

D
Alcohol

Solution
Question 5
1 / -0

In which of the following substances, ethanol is not used?

A
Tonics

B
Cough mixture

C
Candle

D
Alcohol

Solution

Ethanol, also called alcohol, ethyl alcohol and grain alcohol, is a clear, colorless liquid and the principle ingredient in alcoholic beverages like beer, wine or brandy. Because it can readily dissolve in water and other organic compounds, ethanol also is an ingredient in a range of products, from personal care and beauty products to paints and varnishes to fuel.

Ethanol is a good solvent and hence is used in many medicines such as tincture of iodine, cough syrup and tonics.

Many cough and cold liquids and other OTC (over-the-counter) products contain some alcohol. In the formulation, alcohol helps to dissolve active ingredients or preserve the product.

Hence,except candle ethanol is used in all above substances therefore option C is correct answer.
Question 6
1 / -0

Identify the correct order of boiling points of the following compounds:
$$CH_3CH_2CH_2CH_2OH$$ (1)

$$CH_3CH_2CH_2CHO $$ (2)

$$CH_3CH_2CH_2COOH $$ (3)

A
1>2>3

B
3>1>2

C
1>3>2

D
3>2>1

Solution
Question 7
1 / -0

Give the IUPAC name of the above compound.

A
2-Bromo 3-methyl butyric acid

B
2-Bromo 4-formyl butane

C
3-Bromo 2-methyl butanoic acid

D
None of the above
Question 8
1 / -0

The major product of the following reaction:

A

B

C

D

Solution
Question 9
1 / -0

The compounds A and B in the following reaction are ________ respectively.

A
A = Benzyl alcohol, B = Benzyl cyaninde

B
A = Benzyl chloride, B = benzyl cyanide

C
A = benzyl alcohol, B = Benzyl isocyanide

D
none of these

Solution
Question 10
1 / -0

Which of the following ether is unlikely to be cleaved by hot cone. HBr.

A

B

C

D

Solution

A cannot be cleved by HBr it is because in A O is attached to both phenyl ring.
So, nucleophilic attack is not feasible and also positive charge on benzene unstable.