List of top Chemistry Questions

In the reaction, if X is the reagent and Y is the product, which of the following is not feasible?
X is the reagent and Y is the product,
In which of the following, reagent and product are correctly matched with respect to benzene diazonium chloride as reactant?
1-Chloro-4-nitrobenzene, 1-Chloro-2,4-dinitrobenzene and 1-Chloro-2,4,6-trinitrobenzene are transformed to corresponding phenols with the reagents X, Y, Z respectively. What are X, Y, Z?
Which is the correct order of the following alkyl halides for an SN2 reaction?
alkyl halides for an SN2 reaction
Select the correct order of radii of the given ions:
Among V, Cr, Zn, Fe, the metal having lowest enthalpy of atomization is:
Which of the following polymer is used in the preparation of gaskets?
Ranitidine belongs to which of the following class of drugs?
Observe the following Ellingham diagram, and identify the incorrect statement regarding it:
Above 1673K, Al can reduce MgO to Mg
The greater the valence of the flocculating ion added, the greater is its power to cause precipitation of a colloid. This rule is:
Arrange the following free radicals in the correct order of their stability:
The decreasing order of priority for the following functional groups in the IUPAC Nomenclature is: –SO\textsubscript{3}H, –CN, –COOH, –OH, –CHO
Which of the following statement(s) is/are correct?
Which of the following is not correct?
Statement I: Boron does not exhibit allotropy
Statement II: Boron is extremely hard and black coloured solid
The following methods can not be used to remove permanent hardness of water:
At 300 K, the following graph is obtained for one mole of an ideal gas. If its pressure is 10 atm, then its volume (in L) will be
What are x, y and z respectively in the following reaction?
\[ x \text{Fe}^{2+} (aq) + y \text{H}^{+} (aq) + z \text{Cr}_2\text{O}_7^{2-} (aq) \rightarrow \frac{y}{2} \text{H}_2\text{O} (l) + x \text{Fe}^{3+} (aq) + 2z \text{Cr}^{3+} (aq) \]
Maximum number of electrons theoretically possible for an orbit with principal quantum number n = 6 in an atom is.
The correct order of bond enthalpy of given molecules is
The correct order of electron gain enthalpy of N, O, Cl, Al is.
At T (K), an ideal gas (Z) present in V L flask exerted a pressure of 16.4 atm. Its concentration is 1 mol L$^{-1}$. What is the value of T in K?
Which of the following statements are correct?
Identify the region of spectral lines of electromagnetic spectrum, when electron transition takes place from higher energy levels to n = 3, 4, 5 in atomic spectrum of hydrogen.
Identify the major product of the following reaction:
3-bromo benzoic acid