List of top Chemistry Questions

When 1-chlorobutane is treated with aqueous KOH it gives P. However, when treated with alcoholic KOH it gives Q. Identify P and Q respectively.
Identify the major product formed from the following:
Nai/dry acetone
Arrange the following in increasing order of their reactivity for nucleophilic addition reaction:
Arrange the following in increasing order of their reactivity for nucleophilic addition reaction:
Identify the major product formed in the following reaction sequence:
ch3cocl/anhyd alcl3
What are x and y in the following reaction?
$x \text{Pb}_3\text{O}_4 \rightarrow y \text{PbO} + \text{O}_2$
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
Photographic plates are prepared by coating emulsion of which of the following in gelatin?
The diameter range of colloidal particles is approximately:
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$_2$
If molten NaCl contains SrCl$_2$ as impurity, crystallization can generate
The compound or ion which is not aromatic in the following is
Assertion (A): Blood cells collapse when suspended in saline water
Reason (R): Cell membrane dissolves in saline water
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
What are X and Y respectively in the following reactions?
\( \text{X} + \text{D}_2\text{O} \rightarrow \text{CD}_2 + \text{P} \)
\( \text{Y} + \text{D}_2\text{O} \rightarrow \text{CD}_4 + \text{Q} \)
Identify the reaction/process in which the entropy increases.
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
The statement related to law of definite proportions is:
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.
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: