List of top Chemistry Questions

Which of the following will have a meso-isomer also?
Which of the following is the correct and increasing order of lone pair of electrons on the central atom?
If the Planck?s constant $h = 6.6 \times 10^{-34} \, Js$, the de Broglie wavelength of a particle having momentum of $3.3 \times 10^{-24} \, kg \, ms^{-1}$ will be
Choose the CORRECT answer(s) with respect to the magnesium-EDTA titration carried out in the pH range 7 – 10.5, using Solochrome black as indicator

Tetrapeptide(s) that gives(give) the following product on reaction with Sanger's reagent followed by hydrolysis is(are) 

The volume of 0.3 M ferrous ammonium sulphate solution required for the completion of redox titration with 20 mL of 0.1 M potassium dichromate solution is ............. mL.
The number of hydrogen bond(s) present in a guanine-cytosine base pair is .............

The achiral molecules among the following (I, II, III and IV) are 

Match the entries in Group I (Mechanical system) with analogous quantities in Group II (Electrical system) 
Group I                                  Group II 
P) Proline                          1) Artificial sweetener 
Q) Oxytocin                      2) Cyclic amino acid 
R) Aspartame                   3) β-Lactam 
S) Penicillin                      4) Peptide hormone 
 

Which one of the following statements is CORRECT?

In the \( ^1H \) NMR spectrum, which one of the following compounds will show a triplet? 

 

Which of the following statements is/are CORRECT?
Which of the following pairs of compounds can be distinguished by iodoform test performed in ammonium hydroxide?

The stability of the following carbocation arises from hyperconjugation with ........... number of hydrogen atoms. 

Oxidation state of Fe in the complex \( K_3[Fe(CN)_5NO] \) is (+) ........... 
 

The mechanism of the following reaction involves the formation of a .......... membered ring. 

The number of axial C-H bond(s) in the major product (P) of the given reaction is .............. 

A first order reaction is 87.5% complete at the end of 30 minutes. The half-life of the reaction is ............... minute(s). 
 

Carbonic anhydrase is an example of
Which of the following molecules can be described as having sp hybridisation?
For the isoelectronic series \(S^{2-}, Cl^{-}, Ar, K^{+}\) and \(v\), which species requires the least energy to remove an outer electron?
Which of the following best explains, why a hot air balloon rises?
Beyond the critical point of H2O
On combustion of x-g of ethanol in a bomb calorimeter, y-joules of heat energy is produced. The heat of combustion of ethanol (\(\Delta H_{{comb}}\)) is
Which of the following represents an ester?