List of top Chemistry Questions

The structure of the compound having molecular formula $C_9H_{12}$ showing NMR peaks at δ 7.1, 2.2, 1.5 and 0.9 ppm is:

Number of distinct NMR signals observed in case of acetone and ethyl methyl ketone are:

Arrange the following carbonyl compounds in the decreasing order of their reactivity towards nucleophilic addition reaction:
(A) CH₃CHO
(B) HCHO
(C) Cl₃CCHO
(D) CH₃COCH₂CH₃
Choose the correct answer from the options given below:

Match List I with List II:

Table Fig

Arrange the following compounds A, B, C, and D in decreasing order of acidic strength:

Ques Fig

Ques Fig 2

Choose the correct answer from the options given below:

Iodoform reaction is given by:
(A). all methyl ketones with CH3CO group
(B). Acetaldehyde
(C). all secondary alcohols with CH3CH(OH) group
(D). all primary alcohols
Choose the correct answer from the options given below:

Which one is not an electrophile?

The correct order of the stability of different conformations of cyclohexane is:
(A). chair
(B). boat
(C). twist boat
(D). half chair
Choose the correct answer from the options given below:

Assign the R and S configuration to the following molecule.

Quest problem

Choose the correct answer from the options given below:

Number of elements from the following that CANNOT form compounds with valencies which match with their respective group valencies is ______.
B, C, N, S, O, F, P, Al, Si

If an iron (III) complex with the formula \[\left[ \text{Fe}(\text{NH}_3)_x (\text{CN})_y \right]^-\]has no electron in its \( e_g \) orbital, then the value of \( x + y \) is:

What is another term used for the probability factor (P) in collision theory?

Which factor in the Arrhenius equation corresponds to the fraction of molecules having kinetic energy greater than activation energy?

Kohlrausch law is related to which of the following term?

Which term of molar conductivity is used when the concentration of electrolyte approaches zero?

What is the overall order of the reaction? Rate = k[A]^½ [B]^3/2

Molal elevation constant is also known as:

Which among the following compounds show metal excess defect due to anionic vacancy?

Which of the following solvents is having its lowest Ebullioscopic constant?

Solvent	Boiling Point (K)
Chloroform	334.4
Diethyl Ether	307.8
Benzene	353.3
Carbon disulphide	319.4

Choose the correct answer from the options given below:

Which of the following gases at 298 K and 1 atm pressure is having maximum solubility in water?
(A) Methanal, K_H = 0.000018
(B) Argon, K_H = 40.3
(C) Methane, K_H = 0.41
(D) CO₂, K_H = 1.6
Choose the correct answer from the options given below:

Match List-I with List-II:

List-I (Amino Acid)	List-II (Nature of Amino Acid)
(A) Valine	(I) Basic amino acid
(B) Glycine	(II) Neutral optically active amino acid
(C) Lysine	(III) Acidic amino acid
(D) Glutamic acid	(IV) Neutral optically inactive amino acid

Choose the correct answer from the options given below:

Which of the following is/are the bases of DNA?
(A) Adenine
(B) Uracil
(C) Thymine
(D) Cytosine

Match List-I with List-II:

Choose the correct answer from the options given below:

Match List-I with List-II:

List-I	List-II
(A) Mn²⁺	(I) Pyrolusite ore
(B) Spin only Magnetic Moment	(II) An alloy of 4f metal, iron and traces of S, C, Al and Ca
(C) MnO₂	(III) μ_s = √n(n + 2) BM
(D) Misch metal	(IV) Highest oxidation states

Choose the correct answer from the options given below:

The correct statement/statements from the options given below is/are:
(A) Diazonium salts of aromatic amines are less stable than diazonium salts of aliphatic amines.
(B) Ethylamine is insoluble in water.
(C) Gabriel phthalimide synthesis can be used to prepare primary amines.
(D) Because of +R-effect of–NH2 group, aniline will undergo Friedel-Crafts acylation reaction.
Choose the correct answer from the options given below: