List of top Chemistry Questions

The most stable carbocation from the following is: \includegraphics[width=1\linewidth]{3333.png}
The correct order of the following complexes in terms of their crystal field stabilization energies is:
Arrange the following compounds in increasing order of their dipole moment:
HBr, H2_2S, NF3_3, and CCl3_3
20 mL of 2 M NaOH solution is added to 400 mL of 0.5 M NaOH solution. The final concentration of the solution is ___ x 10−2 10^{-2} M. (Nearest integer)
Match the Compounds (List - I) with the appropriate Catalyst/Reagents (List - II) for their reduction into corresponding amines. \includegraphics[width=1\linewidth]{b.png}
The complex of Ni2+^{2+} ion and dimethyl glyoxime contains ____ number of Hydrogen (H) atoms.
Total number of non-bonded electrons present in NO2 \text{NO}_2 ; ion based on Lewis theory is:
The correct order of stability of following carbocations is:
The correct order of stability of following carbocations is
Given below are two statements:
will undergo alkaline hydrolysis at a faster rate than
, intramolecular substitution takes place first by involving lone pair of electrons on nitrogen.
Given below are two statements:
Statement I: D-glucose pentaacetate reacts with 2,4-dinitrophenylhydrazine.
Statement II: Starch, on heating with concentrated sulfuric acid at 100°C and 2-3 atmosphere pressure, produces glucose.
In the light of the above statements, choose the correct answer from the options given below:
For [NiCl4]2−[ \text{NiCl}_4 ]^{2-}, what is the charge on metal and shape of complex respectively?
Which of the following is the correct order of acidic strength for the following compounds: HNO3_3, HClO4_4, and HClO3_3?
Both acetaldehyde and acetone (individually) undergo which of the following reactions?
A. Iodoform Reaction
B. Cannizzaro Reaction
C. Aldol Condensation
D. Tollen's Test
E. Clemmensen Reduction
Choose the correct answer from the options given below:
A weak acid HA has degree of dissociation x. Which option gives the correct expression of pH−pKapH - pK_a?
The molecules having square pyramidal geometry are:

Compare boiling point of given solutions:

(i) 10−4 M NaCl 10^{-4} \, \text{M NaCl} >(ii) 10−3 M NaCl 10^{-3} \, \text{M NaCl} >(iii) 10−2 M NaCl 10^{-2} \, \text{M NaCl} >(iv) 10−4 M urea 10^{-4} \, \text{M urea}  

(iii) 10−2 M NaCl 10^{-2} \, \text{M NaCl} >(ii) 10−3 M NaCl 10^{-3} \, \text{M NaCl} >(i) 10−4 M NaCl 10^{-4} \, \text{M NaCl} >(iv) 10−4 M urea 10^{-4} \, \text{M urea}  

(ii) 10−3 M NaCl 10^{-3} \, \text{M NaCl} >(i) 10−4 M NaCl 10^{-4} \, \text{M NaCl} >(iii) 10−2 M NaCl 10^{-2} \, \text{M NaCl} >(iv) 10−4 M urea 10^{-4} \, \text{M urea}  

(iii) 10−2 M NaCl 10^{-2} \, \text{M NaCl} >(ii) 10−3 M NaCl 10^{-3} \, \text{M NaCl} >(i) 10−4 M NaCl 10^{-4} \, \text{M NaCl} >(iv) 10−4 M urea 10^{-4} \, \text{M urea}  
 

What is the freezing point depression constant of a solvent, 50 g of which contain 1 g non-volatile solute (molar mass 256 g mol−1^{-1}) and the decrease in freezing point is 0.40 K?
The compounds that produce CO2_2 with aqueous NaHCO3_3 solution are:
The compounds that produce CO2 with aqueous NaHCO3 solution are:
What is the hybridization of the central atom in the molecule SO3 \text{SO}_3 ?
Ice and water are placed in a closed container at a pressure of 1 atm and temperature 273.15K. If pressure of the system is increased 2 times, keeping temperature constant, then identify correct observation from the following:
In a multielectron atom, which of the following orbitals described by three quantum numbers will have the same energy in absence of electric and magnetic fields?
A. n=1,l=0,ml=0 n = 1, l = 0, m_l = 0
B. n=2,l=0,ml=0 n = 2, l = 0, m_l = 0
C. n=2,l=1,ml=1 n = 2, l = 1, m_l = 1
D. n=3,l=2,ml=1 n = 3, l = 2, m_l = 1
E. n=3,l=2,ml=0 n = 3, l = 2, m_l = 0
Choose the correct answer from the options given below:
In the reaction 2A+B→C 2A + B \rightarrow C , if the rate law is Rate=k[A]2[B] \text{Rate} = k[A]^2[B] , what is the overall order of the reaction?
Which of the following oxidation reactions are carried out by both K2Cr2O7 K_2Cr_2O_7 and KMnO4 KMnO_4 in acidic medium?
A. I−→I2 I^- \rightarrow I_2
B. S2−→S S^{2-} \rightarrow S
C. Fe2+→Fe3+ Fe^{2+} \rightarrow Fe^{3+}
D. I−→IO3− I^- \rightarrow IO_3^-
E. S2O32−→SO42− S_2O_3^{2-} \rightarrow SO_4^{2-}
Choose the correct answer from the options given below:
Find the dimensions of Bμ0 \frac{B}{\mu_0}
Match the LIST-I with LIST-II (Redox Reactions).
Redox Reaction;type of Redox Reaction
Choose the correct answer from the options given below: