List of top Chemistry Questions

The set of molecules in which the central atom is not obeying the octet rule is
The formal charges of atoms (1), (2) and (3) in the ion $\left[ \mathrm{O} = \mathrm{N} = \mathrm{O} \right]^+$ are
Observe the following properties: Volume, enthalpy, density, temperature, heat capacity, pressure, internal energy. The number of extensive properties in the above list is
How many grams of Mg is required to completely reduce 100 mL, 0.1 M $\mathrm{NO}_3^-$ solution using the following reaction? $\mathrm{NO}_3^- + \mathrm{Mg} \to \mathrm{Mg}^{2+} + \mathrm{NH}_3$
What is the oxidation state of S in the sulphur containing product of the following reaction?
$\mathrm{SO}_3^{2-} (aq) + \mathrm{Br}_2(l) + \mathrm{H}_2O \to$
The maximum number of electrons present in an orbital with \(n = 4,\ l = 3\) is
Which quantum number provides information about the shape of an orbital?
Which of the following elements are arranged in the correct order of their electron gain enthalpies?
Identify the correct trend of acidic strength for the given alcohols:
correct trend of acidic strength for the given alcohols:
Identify the major product from the following reaction sequence:
the major product from the following reaction sequence
Identify P and Q respectively of the following reaction:
P and Q respectively of the following reaction
Which of the following can undergo disproportionation reaction on heating with Conc. Alkali?
Identify the major product formed from the following:
the major product formed from the following
Which of the following is Indian saltpetre?
In the following unbalanced reaction, the product formed is:
NaAlO$_2$ + Al(OH)$_3$ + H$_2$O $\rightarrow$ ?
The outer electronic configuration of \(\text{Pd}^{2+}\) is
The IUPAC name of the following complex is \([Co(NH_2CH_2CH_2NH_2)_2Br_2]Br\)
The correct statements with respect to dialysis of colloidal solution are:
I. Colloidal particles can pass through the membrane
II. Animal bladder can be used as membrane
III. Cellophane is not used as membrane
IV. Ions and small molecules can diffuse through membrane into water
The molality and molarity of a solution of glucose in water which is labeled as 10% (w/w) are respectively (density of solution = 1.2 g/mL)
The ratio of effective number of atoms in a unit cell of fcc and bcc lattices is
A cubic lattice has A atoms at the body center, B atoms at the corners, C atoms at half of the face centers. The formula of the lattice is
Assertion (A): Finely divided charcoal can act as an adsorbent
Reason (R): Finely divided material has small surface area
1.8 g of glucose (molar mass 180 g/mol) is dissolved in 0.1 kg of water. The freezing point of the solution (in °C) is
(K$_f$ for water = 1.86 K kg mol$^{-1}$)
The energy conversion involved in a galvanic cell is
If the rate of disappearance of N$_2$O$_5$ in the following reaction is 1.2 $\times$ 10$^{-5}$ mol L$^{-1}$ s$^{-1}$, the rate of production of NO$_2$ (in mol L$^{-1}$ s$^{-1}$) is
2N$_2$O$_5$ (g) $\rightarrow$ 4NO$_2$ (g) + O$_2$ (g)