Sum of O atoms in A and B is ?
Correct Answer: 14
Solution and Explanation
Top Questions on Nucleophilic and electrophilic substitution reactions (both aromatic and aliphatic)
Total number of nucleophiles from the following is: \(\text{NH}_3, PhSH, (H_3C_2S)_2, H_2C = CH_2, OH−, H_3O+, (CH_3)_2CO, NCH_3\)
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- Chemistry
- Nucleophilic and electrophilic substitution reactions (both aromatic and aliphatic)
Given below are two statements:
Statement (I): Alcohols are formed when alkyl chlorides are treated with aqueous potassium hydroxide by elimination reaction.
Statement (II): In alcoholic potassium hydroxide, alkyl chlorides form alkenes by abstracting the hydrogen from the $ \beta $-carbon.
In the light of the above statements, choose the most appropriate answer from the options given below:- JEE Main - 2025
- Chemistry
- Nucleophilic and electrophilic substitution reactions (both aromatic and aliphatic)
In the following substitution reaction:
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- Chemistry
- Nucleophilic and electrophilic substitution reactions (both aromatic and aliphatic)
- When sec-butylcyclohexane reacts with bromine in the presence of sunlight, the major product is:
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- Chemistry
- Nucleophilic and electrophilic substitution reactions (both aromatic and aliphatic)
- Among the following, which will have inversion of configuration on reaction with aqueous alkali and why?
(i) 1-chloropropane
(ii) 2-chloro-2-methylpropane- CBSE CLASS XII - 2025
- Chemistry
- Nucleophilic and electrophilic substitution reactions (both aromatic and aliphatic)
Questions Asked in JEE Main exam
For a statistical data \( x_1, x_2, \dots, x_{10} \) of 10 values, a student obtained the mean as 5.5 and \[ \sum_{i=1}^{10} x_i^2 = 371. \] He later found that he had noted two values in the data incorrectly as 4 and 5, instead of the correct values 6 and 8, respectively.
The variance of the corrected data is:- JEE Main - 2025
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- Let the line \( x + y = 1 \) meet the circle \( x^2 + y^2 = 4 \) at the points A and B. If the line perpendicular to AB and passing through the midpoint of the chord AB intersects the circle at C and D, then the area of the quadrilateral ABCD is equal to:
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- A person measures mass of 3 different particles as 435.42 g, 226.3 g and 0.125 g. According to the rules for arithmetic operations with significant figures, the additions of the masses of 3 particles will be.
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- A force of 49 N acts tangentially at the highest point of a sphere (solid of mass 20 kg) kept on a rough horizontal plane. If the sphere rolls without slipping, then the acceleration of the center of the sphere is:
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- Two equal sides of an isosceles triangle are along \( -x + 2y = 4 \) and \( x + y = 4 \). If \( m \) is the slope of its third side, then the sum of all possible distinct values of \( m \) is:
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