List of top Chemistry Questions asked in CUET (UG)

If 75$\%$ of a first-order reaction gets completed in 32 minutes, the time taken for 50$\%$ completion of this reaction is:

A molecule X associates in a given solvent as per the following equation:
X ⇌ (X)_n
For a given concentration of X, the van’t Hoff factor was found to be 0.80 and the
fraction of associated molecules was 0.3. The correct value of ‘n’ is:

The total number of ions produced from the compound \(\text{Cr}(\text{NH}_3)_6]\text{Cl}_3\) in aqueous solution is:

For SN₂ reaction, the increasing order of the reactivity of the following alkyl halides is:
(A) CH₃CH₂CH₂CH₂Br (B) CH₃CH₂CH(Br)CH₃   (C) (CH₃)₃CBr   (D) (CH₃)₂CHCH₂Br

Which among the following is not an Analgesic?

In the following table, match the reactants given in List-I with the correct product in.List-II as per the reaction of hydration of alkene under acidic conditions.

Match List-I with List-II:

Match List-I with List-II:

Match List-I with List-II:

Match List-I with List-II:

In the Etard reaction, the final product is

Although chlorine is electron-withdrawing, it is ortho- and para-directing in electrophilic substitution because • (A) Chlorine withdraws electrons through inductive effect.
(B) Chlorine destabilizes the intermediate carbocation formed during electrophilic sub-stitution.
(C) Chlorine accepts electrons through resonance
(D) Chlorine releases electrons through resonance.
Choose the correct answer from the options given below:

The Gattermann-Koch reaction is used in the industrial preparation of benzaldehyde. The electrophile involved in this reaction is

In the reaction, (CH₃)₃C − O − CH₃ + HI → Products, CH₃OH and (CH₃)₃CCl are the products and not CH₃I and (CH₃)₃COH. It is because

Formaldehyde undergoes Cannizzaro reaction because
(A) It has alpha-hydrogen atom.
(B) It does not have alpha-hydrogen atom.
(C) It does not undergo self-oxidation and reduction on heating with concentrated alkali.
(D) It undergoes self-oxidation and reduction on heating with concentrated alkali.

In the following compounds, what is the increasing order of their reactivity towards nucleophilic addition reactions?

Arrange the following acids in increasing order of their acidic strengths: HCOOH, FCH₂COOH, NO₂CH₂COOH, ClCH₂COOH

Which of the following compounds will give the Hell-Volhard-Zelinsky reaction?

What will be the increasing order of basic strength of the following compounds: \(\text{C}_2\text{H}_5\text{NH}_2, (\text{C}_2\text{H}_5)_2\text{NH},(\text{C}_2\text{H}_5)_3\text{N},\text{C}_6\text{H}_5\text{NH}_2\)

The gold number range of some lyophilic colloids is given below: A: 0.005–0.01, B: 0.15–0.25, C: 0.04–1.0, D: 15–25

In the following reaction, identify the product D.

The correct order of increasing boiling points of the following compounds is: Pentan-1-ol, n-Butane, Pentanal, Ethoxyethane

The spin-only magnetic moment of Hexacyanomanganate(II) ion is.........BM

Which of the following compounds will be repelled when placed in an external magnetic field?