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)?
The catalyst used in the manufacture of polyethylene is a mixture of
Assertion (A): HCl gas is dried by passing through concentrated H$_2$SO$_4$
Reason (R): HCl gas reacts with NH$_3$ that gives white fumes
The compound or ion which is not aromatic in the following is
The number of network solids and ionic solids in the list given below is respectively
H$_2$O (ice), AlN, Cu, CaF$_2$, diamond, MgO, CCl$_4$, ZnS, Ag, NaCl, SiO$_2$
Assertion (A): Blood cells collapse when suspended in saline water
Reason (R): Cell membrane dissolves in saline water
If molten NaCl contains SrCl$_2$ as impurity, crystallization can generate
What are X and Y respectively in the following reactions?
\( \text{X} + \text{D}_2\text{O} \rightarrow \text{CD}_2 + \text{P} \)
\( \text{Y} + \text{D}_2\text{O} \rightarrow \text{CD}_4 + \text{Q} \)
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
The correct order of acidity of the following is:
order of acidity
A cyclic process involves 3 states with 1 mole of ideal gas as follows:\ State 1: \( T = 300 \text{ K},\ P = 15 \text{ bar} \)\ State 2: \( T = 300 \text{ K},\ P = 10 \text{ bar} \)\ State 3: \( T = 300 \text{ K},\ P = 5 \text{ bar} \)\ Calculate the total work done during one complete cycle.
Identify the reaction/process in which the entropy increases.
The statement related to law of definite proportions is:
Among the gases a, b, c, d, e, and f, the gases that show only positive deviation from ideal behavior at all pressures in the graph are:
Among the gases a, b, c, d, e, and f, the gases
Lithium shows diagonal relationship with element X and aluminum with element Y. Identify X and Y respectively.
The correct order of the metallic character of the elements Be, Al, Na, K is:
Choose the correct option from the following:
If \( \Delta x \) is the uncertainty in position and \( \Delta v \) is the uncertainty in velocity of a particle and both are equal, then the correct expression for uncertainty in momentum for the same particle is:
Gabriel phthalimide synthesis is used for the preparation of which of the following?
Identify the major product formed from the following reaction sequence:
major product formed from the following reaction sequence:
Identify the major product from the following reaction sequence:
major product from the following reaction sequence
Reactant: 1-phenylpropanol
In ruby and emerald, the metal ion(s) present is/are: