List of top Chemistry Questions

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
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:
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.

Write the classification of proteins with an example.
46 g ethanol is dissolved in 54 g water. Calculate mole fraction of ethanol and water.
Write a short note on amino acids and nucleic acids.
For an endothermic reaction:
(A) \( q_p \) is negative.
(B) \( \Delta_rH \) is positive.
(C) \( \Delta_rH \) is negative.
(D) \( q_p \) is positive.
Choose the correct answer from the options given below:
Explain the effect of temperature and concentration on the velocity of a reaction.

The spin-only magnetic moment of \( \text{Cr}^{3+} \) cation is ___________.

Define specific resistance and conductance of a cell.
Write the preparation of (a) diethyl ether and (b) ethyl cyanide from ethyl bromide.
Number of deactivating groups among: \( -Cl, -SO_3H, -OH, -NHC_2H_5, -COOCH_3, -CH_3 \)
Derive the relationship between molar mass, density of the substance, and unit cell edge length.
Complete the reaction: \[ CH_3CH_2Cl \quad \xrightarrow{\text{AgCN, alc., } \Delta} \quad ? \]
At 300 K, 3.0 moles of an ideal gas at 3.0 atm pressure is compressed isothermally to one half of its volume by an external pressure of 6.0 atm. The work done (in kJ) is:
Magnesium in Dry Ether
Explain the buffer action of the sodium acetate-acetic acid buffer.
Write the name of the reduction product formed when ethyl cyanide is treated with sodium and alcohol.

The pH of a 0.001 M HCl solution is ___________

Which of the following is a crystalline solid?
Cobalt (III) chloride forms a green-colored complex ‘X’ with NH\(_3\). Number of moles of AgCl formed when excess AgNO\(_3\) solution is added to 100 mL of 1M solution of ‘X’ is: