All questions of General Organic Chemistry (GOC) for JEE Exam

Other 3 are sublimating substance except NaCl

Nitration and sulfonation of benzene are two examples of electrophilic aromatic substitution. The nitronium ion (NO2+) and sulfur trioxide (SO3) are the electrophiles and individually react with benzene to give nitrobenzene and benzenesulfonic acid respectively.

Impure sample of Naphthalene can be purified by Sublimation.

Explanation:

The IUPAC name of the compound C6H5COCl is benzoyl chloride.

Reasoning:

To determine the IUPAC name of a compound, we need to follow the guidelines provided by the International Union of Pure and Applied Chemistry (IUPAC). Let's break down the name and analyze it:

- The compound contains a benzene ring, which is represented by the prefix "benzene" in the name.
- The functional group attached to the benzene ring is a carbonyl group (-CO-), which is represented by the suffix "oyl" in the name.
- The carbonyl group is attached to a chlorine atom, which is represented by the prefix "chloride" in the name.

Putting it all together, we have "benzoyl chloride" as the IUPAC name for the compound C6H5COCl.

Summary:

The IUPAC name of the compound C6H5COCl is benzoyl chloride. The name is derived from the presence of a benzene ring and a carbonyl group attached to a chlorine atom.

First we have to find moles of br in rex. as 141/188
now mass of br in compound is 141*80/188
so %br=141*80*100/188*250=24

Option C is correct.
once go through some examples of gauche isomers.

I draw Actual structure For U=> CH2 = CH-C=_ N u can see between C & N there are three bonds (1 sigma & 2 π bonds) NOTE FOR U ==> (1) if carbon is singly bonded only then sp^3 hybridisation (2) if there is one π bond only then sp^2 hybridisation (3) if there is 2 π bonds then there is sp hybridisation ________ So now u use this given information and conclude answer by ur own self 😄😄😄😃

As we know that the migratory aptitude of H-ion is more than CH3- ion.And we always have to form the most stable carbocation in case of rearrangement. Hence if we remove H-Ion form C4 linkage we will gate a +ve charge in the vicinity of a lone pair which is very stable due to back bonding.So option D is correct. I hope u get it.

The Cl is a fictional character and also the main antagonist in the novel and film adaptation of "Gone Girl" by Gillian Flynn. The Cl, short for "Cool Girl," is a term used to describe a woman who is low-maintenance, easygoing, and effortlessly attractive. In the story, the Cl is the alter ego of the protagonist, Amy Dunne. Amy invents the persona of the Cl to please her husband, Nick, and mold herself into the perfect wife. However, as the story unfolds, it is revealed that the Cl is a facade and Amy is actually a manipulative and calculating individual. The Cl represents the societal pressures on women to conform to a specific ideal and the consequences of trying to live up to those expectations.

**Explanation:**

The correct answer is option D, the fractionating column. Let's break down the explanation:

**1. Heat Exchange:**
The apparatus mentioned in the question is designed to facilitate heat exchange between ascending vapors and descending condensed liquid. Heat exchange is an essential process that occurs in various applications, such as distillation, where it helps in separating mixtures based on differences in boiling points.

**2. Surfaces for Heat Exchange:**
The apparatus should provide multiple surfaces or stages where heat exchange can occur. This means that the ascending vapors and descending condensed liquid should come into close contact with each other, allowing thermal energy transfer.

**3. Round Bottom Flask, Pipette, and Burette:**
The options A (round bottom flask), B (pipette), and C (burette) do not meet the criteria for providing multiple surfaces for heat exchange. Let's briefly explain why:

- **Round Bottom Flask (Option A):** A round bottom flask is a commonly used laboratory glassware that is primarily used for holding liquids and conducting chemical reactions. It does not provide multiple surfaces for heat exchange as required in the question.

- **Pipette (Option B):** A pipette is a laboratory tool used for accurately measuring and transferring small volumes of liquids. It is not designed for heat exchange between ascending vapors and descending condensed liquid.

- **Burette (Option C):** A burette is a long, graduated glass tube with a stopcock at the bottom. It is commonly used in titrations for precise volume measurements but does not provide the required surfaces for heat exchange.

**4. Fractionating Column (Option D):**
The fractionating column is a specially designed apparatus used in distillation processes to achieve separation of liquid mixtures based on differences in boiling points. It consists of multiple stages or trays, providing numerous surfaces for heat exchange.

- **Heat Exchange in the Fractionating Column:** As the vapor rises through the fractionating column, it comes into contact with the descending condensed liquid. Heat is exchanged between the ascending vapors and the descending liquid, allowing the separation of components with different boiling points.

- **Multiple Surfaces for Heat Exchange:** The fractionating column contains several trays or stages, each acting as a surface for heat exchange. The vapors and condensed liquid interact on these trays, promoting efficient heat transfer between the two phases.

Therefore, the fractionating column is the apparatus that best fits the description provided in the question, offering multiple surfaces for heat exchange between ascending vapors and descending condensed liquid.

In structure no 1 no charge is present.in third one positive charge is on "OH" which sjows negative I effect and also "O" atom is more electronegative than C so 3rd is more stable than 2

The addition of dihydrogen to propyne is a type of hydrogenation reaction, where the double bond in propyne is broken and replaced with two hydrogen atoms. This leads to the formation of a new compound, propene.

Explanation:

Propyne has the chemical formula C3H4, containing a triple bond between the second and third carbon atoms. When dihydrogen (H2) is added to propyne, it reacts with the triple bond and leads to the formation of a new compound, propene (C3H6). The reaction can be represented by the following chemical equation:

C3H4 + H2 → C3H6

This reaction is an example of an addition reaction, where the reactants combine to form a single product. The addition of dihydrogen to propyne breaks the triple bond between the carbon atoms and forms a single bond between them. The remaining carbon-carbon double bond in propene is more stable than the triple bond in propyne, making it a more favorable product.

Option (C) is the correct answer, as propene is the product formed when dihydrogen is added to propyne.

In summary, the addition of dihydrogen to propyne leads to the formation of propene, where the triple bond in propyne is broken and replaced with a carbon-carbon double bond.

Alkyl halides do not show functional isomerism. Alcohols and ethers, aldehydes and ketones, cyanides and isocyanides are functional isomers.

Resonance energy is directly proportional to stability