List of top Chemistry Questions

Photographic plates are prepared by coating emulsion of which of the following in gelatin?
The diameter range of colloidal particles is approximately:
Which of the following is correct related to the colours of TiCl$_3$ (X) and [Ti(H$_2$O)$_6$]Cl$_3$ (Y)?
If molten NaCl contains SrCl$_2$ as impurity, crystallization can generate
The compound or ion which is not aromatic in the following is
The correct order of acidity of the following is:
order of acidity
Which of the following tetrahalides does not exist?
Identify the correct statements about Boron:
I. It has high melting point.
II. It has high density.
III. It has high electrical conductivity.
IV. B-10 isotope of it has high ability to absorb neutrons
Identify the reaction/process in which the entropy increases.
Lithium shows diagonal relationship with element X and aluminum with element Y. Identify X and Y respectively.
Gabriel phthalimide synthesis is used for the preparation of which of the following?
In ruby and emerald, the metal ion(s) present is/are:
The rate for \( S_N1 \) reaction will be faster for which of the following bromides?
Curdling of milk is caused due to the formation of which of the following acids by bacteria?
The sol formed in the following unbalanced equation is: \[ \text{As}_2\text{O}_3 + \text{H}_2\text{S} \rightarrow ? \]
The correct statements with respect to halides of group 14 elements are:
(I) Both CCl4 and SiCl4 undergo hydrolysis.
(II) GeX4 is more stable than GeX2.
(III) PbX4 is less stable than PbX2.
(IV) Stability of dihalides decreases down the group.
Which of the following is not a disproportionation reaction?
The combination of which of the following gives an ionic compound with maximum covalent character?
The number of valence electrons present in an element with atomic number 117 is:
In which of the following, the elements Al, B, Mg, and K are correctly arranged in the increasing order of their metallic character?
What does an oxidizing agent do?
For diatomic molecules, the correct statement(s) about the molecular orbitals formed by the overlap to two $2 p_z$ orbitals is(are)
The correct option(s) related to adsorption processes is(are)
The electrochemical extraction of aluminum from bauxite ore involves
The treatment of galena with $HNO _3$ produces a gas that is