List of top Chemistry Questions

Find the time required to complete a reaction 90% if the reaction is completed 50% in 15 minutes.

Magnetic Moment of \( \text{Mn}^{2+} \) is:
IUPAC Name of Glyceraldehyde is:
IUPAC Name of Acetone is:
Which among the following is not an Analgesic?
Match List-I with List-II:
Glucocorticoids
Match List-I with List-II:
Lucas reagent
Match List-I with List-II:
Fibrous Proteins
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:
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?

\(\text{Reaction of aniline with conc. HNO}_3 \text{ and conc. H}_2\text{SO}_4 \text{ at 298 K will produce 47\% of:}\)

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.
chemical reaction
Which of the following compounds will be repelled when placed in an external magnetic field?
The correct structure of dipeptide, Gly-Ala (glycyl alanine) is:
For a complex reaction, the order of reaction is equal to:
Identify the order of reaction if the rate constant is k=2×10−2s−1:
In the electrolysis of alumina to obtain aluminium metal, cryolite is added mainly to:
Camphor in nitrogen gas is a type of solution:
Aspirin is also known as:
A first-order reaction has a half-life of 693 sec. What will be its rate constant?