List of top Chemistry Questions

Which of the following reagents are used to prepare primary amines by Hoffmann bromamide degradation reaction ?
(i) \( \text{R}-\text{C}(=\text{O})-\text{NH}_2 \)
(ii) NaOH
(iii) \( \text{Br}_2 \)
(iv) \( \text{CHCl}_3 \)
Consider the following reaction and identify A and B :
\( \text{CH}_3\text{Cl} + \text{NaI} \xrightarrow{\text{dry acetone}} \text{A} + \text{B} \)
The correct formula of Hinsberg's reagent is :
Which of the reactions is used in the conversion of a ketone into hydrocarbon ?
The major product of carbylamine reaction is :
Identify the set of reagents (X) in the given reaction sequence
Which of the following represents Etard reaction?
Observe the following sets of orders with respect to reactivity of halides against the reactions mentioned as in I and II given below
I. $\text{S}_{\text{N}}1$: Isobutyl iodide $\lt $ sec. butyl iodide $\lt $ t-butyl bromide
II. $\text{S}_{\text{N}}2$: n-Butylbromide $\gt $ Isobutylbromide $\gt $ Sec. butyl bromide
The correct statements of the following are:
I. shaving soaps contain glycerol and rosin
II. Liquid detergents used for dishwashing belong to non-ionic type
III. Unbranched hydrocarbon detergents are non-biodegradable
Identify the reactant (A) in the given reaction

What is the IUPAC name of the product Y formed in the given sequence of reactions? \[ \text{Isobutane} \xrightarrow{\text{KMnO}_4} \text{X} \xrightarrow{\text{(i) Na, (ii) }\text{CH}_3-\text{Br}} \text{Y} \]
What are B and C respectively in the given sequence of reactions?


Consider the following reaction: \[ \text{Ca}_3\text{P}_2 \xrightarrow{\text{HCl}} \text{X} + \text{Y} \uparrow \] Which of the following is not correct regarding Y?
Which of the following is disproportionation reaction?
Which pair of ions act as strong reducing agents?
Which of the following orders correctly represent the strength of ligands in the spectrochemical series?
I. $\text{I}^- \lt \text{Br}^- \lt \text{S}^{2-} \lt \text{SCN}^-$
II. $\text{H}_2\text{O} \lt \text{NCS}^- \lt \text{NH}_3 \lt \text{en}$
III. $\text{Cl}^- \lt \text{F}^- \lt \text{N}^{3-} \lt \text{OH}^-$
D-Glucose does not react with which of the following reagents?
I- $\text{NaHSO}_3$
II- $\text{NH}_2\text{OH}$
III- $(\text{CH}_3\text{CO})_2\text{O}$
IV- Schiff's reagent
Match the following:
Given below are two statements
Statement I: Order of a reaction can be obtained from experiment and can have zero or positive integer or positive fraction values
Statement II: In the Arrhenius equation, the frequency factor is the fraction of molecules that can have energy higher than $E_{\text{a}}$
What is the principle involved in froth floatation process?
Animal skin is X charged and tannin is Y charged. X and Y are respectively
The time taken for 60% completion of a first order reaction is 13.22 min. What is its half-life ($t_{1/2}$) in min? ($\log(2.5) = 0.398$)
Two statements are given about the galvanic cell shown below
Statement I: Current flows from Cu electrode to Zn electrode
Statement II: With increase in time the mass of Zn electrode increases and mass of Cu electrode decreases
Correct answer is
Adsorption of a gas on a metal oxide surface follows Freundlich adsorption isotherm. At $300\text{ K}$, the slope and intercept of this isotherm are 2 and 1.0 respectively. What is the value of $\frac{x}{m}$ when the pressure of the gas is 4 bar?
In the estimation of nitrogen by Kjeldahl's method, the ammonia evolved from 0.30 g of an organic compound (X) was passed into 100 mL of 0.1 M $\text{H}_2\text{SO}_4$. The unreacted acid required 20 mL of 0.5 M NaOH for complete neutralization. What is X?