List of top Chemistry Questions

Consider the following Statement-I : Lactose is composed of \( \alpha \)-D-glucose and \( \beta \)-D-glucose. Statement-II : Lactose is a reducing sugar. The correct answer is
Consider the following Statement-I : Lactose is composed of \( \alpha \)-D-glucose and \( \beta \)-D-glucose. Statement-II : Lactose is a reducing sugar. The correct answer is
The list given below contains essential amino acids that are basic (X) and also non-essential amino acids that are neutral (Y). X and Y, respectively are
a) Lysine
b) Alanine
c) Serine
d) Arginine
e) Tyrosine

How many of the following molecules / ions have a trigonal planar structure? 
\( \text{BO}_3^{3-}, \, \text{NH}_3, \, \text{PCl}_3, \, \text{BCl}_3, \, \text{ClF}_3, \, \text{XeO}_3 \)

The increasing order of covalent character of \(\mathrm{NaCl}\) (I), \(\mathrm{RbCl}\) (II), \(\mathrm{MgCl}_2\) (III), \(\mathrm{AlCl}_3\) (IV) is:
A diatomic molecule has a dipole moment of $ 4 \times 10^{-30} \, \text{Cm} $. If the bond distance is $ 1.0 \, \text{\AA} $, what fraction of an electronic charge exists on each atom? (Actual value of electronic charge = $ 1.6 \times 10^{-19} \, \text{C} $)
A molecule ‘X’ has square pyramidal geometry, as per VSEPR theory. The number of bond pairs and lone pairs of electrons present in the valence shell of central atom of X, respectively, are
The pairs of compounds which have the same molecular geometry are
I) BF\textsubscript{3}, BrF\textsubscript{3}
II) XeF\textsubscript{2}, BeCl\textsubscript{2}
III) BCl\textsubscript{3}, PCl\textsubscript{3}
IV) PCl\textsubscript{3}, NCl\textsubscript{3}
Which of the following molecules has the highest bond angle?
Which of the following sets are not correctly matched?
I) O\textsubscript{2}\textsuperscript{+}, O\textsubscript{2}\textsuperscript{–} \hspace{1em} – diamagnetic
II) O\textsubscript{2}\textsuperscript{–}, O\textsubscript{2} \hspace{3.8em} – paramagnetic
III) O\textsubscript{2}\textsuperscript{–}, O\textsubscript{2}\textsuperscript{2–} \hspace{1em} – diamagnetic
IV) O\textsubscript{2}\textsuperscript{+}, O\textsubscript{2}\textsuperscript{2–} \hspace{1em} – paramagnetic
Observe the following statements
Statement-I: Hybridisation is not same in both SF₆ and BrF₅.
Statement-II: BrF₅ is Square pyramidal while SF₆ is octahedral in shape
The correct answer is
The sum of bond order of \(O_2\), \(O_2^-\), \(O_2^{2-}\) and \(O_2^+\) is equal to
Which of the following statements are correct?
I. The increasing order of covalent character of NaCl, RbCl, MgCl$_2$ is RbCl < NaCl <\ MgCl$_2$
II. The high boiling point of water is due to intramolecular hydrogen bonding
III. H$_2$O has more dipole moment among NH$_3$, H$_2$O, and HF
Identify the pairs in which both molecules do not possess same type of hybridization:
I. H$_2$O, SO$_2$
II. PCl$_3$, NH$_3$
III. SO$_2$, SO$_3$
IV. BCl$_3$, NCl$_3$
Which of the following statement is not correct?
The pair of molecules having same number of lone pair of electrons on central atom is
Given below are two statements:
Statement I: A hypothetical diatomic molecule with bond order zero is quite stable.
Statement II: As bond order increases, the bond length increases.
In the light of the above statements, choose the most appropriate answer from the options given below:
Which of the following molecules has the highest bond angle?
Which of the following molecules has a trigonal planar shape?
Identify the geometry and hybridization of the central atom in SF₄.

Identify the correct orders against the property mentioned:
A. H$_2$O $>$ NH$_3$ $>$ CHCl$_3$ - dipole moment
B. XeF$_4$ $>$ XeO$_3$ $>$ XeF$_2$ - number of lone pairs on central atom 
C. O–H $>$ C–H $>$ N–O - bond length 
D. N$_2$>O$_2$>H$_2$ - bond enthalpy 
Choose the correct answer from the options given below:

Which of the following molecules has a linear shape?
Match the Compounds (List- I) with the appropriate Catalyst/Reagents (List- II) for their reduction into corresponding amines.
Match the Compounds (List- I) with the appropriate Catalyst/Reagents (List- II) for their reduction into corresponding amines.
State Raoult’s law for a solution containing volatile components. Why is the vapour pressure of an aqueous solution of glucose lower than that of water?
Magnetic moment of a bivalent ion in aqueous solution will be, if its atomic number is 25: