List of top Chemistry Questions

Assertion (A): Aldehydes are more reactive than ketones towards nucleophilic addition reactions.
Reason (R): In aldehydes, the carbonyl carbon is less electrophilic compared to ketones.
Appropriate reagent used to distinguish between acetaldehyde and acetone is
Which of the following sequence of reagents convert benzaldehyde to 4-chlorotoluene?
In the following reaction sequence, what are X and Y respectively?
nucleophilic addition of a methoxy group
The reagents/ chemicals X and Y that convert cyanobenzene to Schiff's base are

Identify the set, in which X and Y are correctly matched:

What are X and Y respectively in the following reactions? 

The pK\(_a\) values of X, Y, Z respectively are 8.3, 7.1, 10.2. What are X, Y, Z?
Which of the following statements is correct regarding boric acid?
Phosphodiester linkage that joins nucleotides together is present between which carbons of pentose sugar?
In which of the following species, the ratio of s-electrons to p-electrons is the same?
Consider the argon atom. For how many electrons does this atom have \( m_l = 1 \)?
The correct increasing order of energy of orbitals in a hydrogen atom is:
Which of the following is a globular protein?
Silver Nitrite
What are interhalogen compounds? Write the chemical reaction when chlorine reacts with dry slaked lime.
Write short notes on the changes in atomic and ionic sizes and ionization enthalpy of transition metals.
In the following reaction: \[ \text{C} + \text{Conc.} \, \text{H}_2\text{SO}_4 \xrightarrow{\Delta} \text{X} + \text{Y} + \text{H}_2\text{O} \] X and Y in the above reaction are:
Adsorption of a gas (A) on an adsorbent follows Freundlich adsorption isotherm. The slope and intercept (on y-axis) of the isotherm are 0.5 and 1.0, respectively. What is the value of \( \frac{x}{m} \), when the pressure of the gas (A) is 100 atm?
A low boiling point metal contains high boiling point metal as impurity. The correct refining method is
Copper matte is a mixture of:
Why are amines basic in nature? Among dimethylamine (pK$_b$ = 3.27) and diethylamine (pK$_b$ = 3.0), which one is more basic?
Explain Wolff-Kishner reduction reaction. Write the preparation of propanone by using ethanoyl chloride and dimethyl cadmium.
Calculate the effective atomic number (EAN) of \( [Co(NH_3)_6]^{3+} \) ion.

Write the name of the metal nanoparticle used to remove E. coli bacteria from water.