CUET · CHEMISTRY · PYQ PAPER 2023
Read the passage carefully and answer the Questions
Carbonyl compounds such as aldehydes, ketones, and carboxylic acids play an important role in the biochemical process of plants and animal kingdom.
Many aldehydes and ketones find applications in dye, perfumery and other industries.
The carbonyl carbon atom is \(s p^2\)-hybridized forming three sigma and one pi-bond with oxygen.
C-O bonds are polar bond due to high electronegativity of oxygen than carbon.
Hence the carbonyl carbon behaves as an electrophilic center and oxygen as a nucleophilic centre.
Primary and secondary alcohols yield aldehydes and ketones respectively upon oxidation with variety of oxidizing agents.
The boiling points of aldehydes and ketones differ from hydrocarbons and ethers.
Aldehydes and ketones undergo nucleophilic addition reaction due to presence of electrophilic carbonyl carbon.
Nucleophile and a proton add across the carbon oxygen double bond.
The alcohol which cannot be used to prepare carbonyl compound through oxidation is
- A \(\text{CH}_3\text{CH}_2\text{CH}_2\text{CH}_2\text{OH}\)
- B \((\text{CH}_3)_3\text{C-OH}\)
- C \(\text{CH}_3\text{CH}_2\text{CH(OH)CH}_3\)
- D \(\text{CH}_3\text{CH = CHCH}_2\text{OH}\)
Answer & Solution
Correct Answer
(B) \((\text{CH}_3)_3\text{C-OH}\)
Step-by-step Solution
Detailed explanation
No Solution
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from CHEMISTRY
- Match List-I with List-II
Choose the correct answer from the options given below:List-I (Name Reaction) List-II (Reaction) (A) Stephen Reaction (i) 
(B) Gatterman-Koch Reaction (ii) 
(C) Etard Reaction (iii) 
(D) Rosenmund reduction
(iv)
CUET 2025 Easy - Transition metal ions having zero unpaired electrons are:
(A) \(Sc^{3+}\)
(B) \(Ti^{3+}\)
(C) \(Cu^{2+}\)
(D) \(Zn^{2+}\)
(E) \(Mn^{2+}\)
Choose the correct answer from the options given below:CUET 2023 Medium - The unit of molar conductivity isCUET 2025 Easy
- According to Alexander Zaitsev the most preferred product for dehydrohalogenation of 2-Bromopentane will be :CUET 2023 Hard
- From the statements given, choose the correct option based on the Arrhenius equation
\(k = Ae^{-E_{a}/RT}\)CUET 2025 Hard - Which of the following complexes show linkage isomerism?CUET 2025 Easy
More PYQs from CUET
- A and \(B\) throw a pair of dice alternately. A wins the game if he gets a total of 6 and \(B\) wins if he gets a total of 7 . If \(A\) starts the game, the probability of winning the game by \(A\) in the third throw of the pair of dice is:CUET 2023 Medium
- The area (in square units) of the region bounded by the curves \(3 y^2=a x, y=a, a>0\) and \(y\) - axis is :CUET 2025 Easy
- The correct statements regarding order and molecularity of the reaction are:
(A) The order of a reaction can be zero or an integer.
(B) The molecularity of a reaction can be zero or an integer.
(C) The molecularity cannot be zero or fraction.
(D) The order of a reaction is decided by the slowest step of the complex reaction.
Choose the correct answer from the options given below:CUET 2025 Hard - A ray incident at 50° on one refracting surface of a prism of angle 60°, suffers a deviation of 40°. The angle of emergence is:CUET 2023 Medium
- Which of the following statements is correct for a compound microscope?CUET 2025 Medium
- There are two metallic spheres A and B having radii equal to R and 2R respectively. A charge Q is distributed on these two spheres such that the two spheres have equal surface charge densities. The ratio of charge on A to charge on B is :CUET 2023 Easy