List of top Chemistry Questions asked in CUET (UG)

The oxidation number of Co in complex [Co(H$_2$NCH$_2$CHNH$_2$)$_3$]$_2$(SO$_4$)$_3$ is:

What is the overall order of the reaction which has the following rate expression? Rate = k[A]$^\frac{1}{2}$[B]$^\frac{3}{2}$

Match List-I with List-II:

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

The total number of sigma bonds in P$_4$O$_{10}$ is:

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.

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

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

Aniline does not undergo Friedel-Crafts reaction because 1.(A) It forms salt with the Lewis acid catalyst, AlCl₃.
2. (B) Nitrogen of aniline acquires negative charge.
3. (C) Nitrogen of aniline acquires positive charge.
4. (D) Nitrogen acts as a strong deactivating group in the further reaction.

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

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

The correct structure of dipeptide, Gly-Ala (glycyl alanine) is:

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

The Cu metal crystallises into fcc lattice with a unit cell edge length of 361 pm. The radius of Cu atom is:

For the reaction 2A₂(g) + ¼X(g) → 2A₂X(g),If the volume is increased to double its value by decreasing the pressure on it. If the reaction is first order with respect to X and second order with respect to A₂, the rate of reaction will:

Which among the following is not an Analgesic?

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 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

Arrange the following in decreasing order of the number of molecules contained in: (A) 16 g of O$_2$, (B) 16 g of CO$_2$, (C) 16 g of CO, (D) 16 g of H$_2$

For a complex reaction, the order of reaction is equal to:

In the electrolysis of alumina to obtain aluminium metal, cryolite is added mainly to:

Camphor in nitrogen gas is a type of solution: