List of top Chemistry Questions asked in IIT JAM BT

Major product formed in the given reaction is
Reaction
The stationary phase of cation-exchange chromatography can be
Components of a Transmission Electron Microscope are
The correct statement/s for bimolecular nucleophilic substitution reactions is/are
Energy of the electron in hydrogen atom in its ground state is 13.6 eV. The energy required (in eV) to move the electron from its ground state to the first excited state, rounded off to TWO decimal places, is .............
The vibrational frequency (expressed in wavenumber) of \( ^1H^{35}Cl \) is 2990.6 cm\(^{-1}\). Assuming that the force constant is the same in both cases, vibrational frequency (in cm\(^{-1}\)) of \( ^2D^{35}Cl \) is .............
In the following reaction, the values of \( \Delta H \) and \( \Delta S \) at temperature 25 °C are -13.7 kcal/mole and -16.0 cal/(K·mole), respectively.
The value of \( \Delta G \) (in kcal/mole) of the reaction, rounded off to TWO decimal places, is ...............

IR spectrum of a compound \( C_5H_{10}O \) shows a band at 1715 cm\(^{-1}\). The same compound showed two signals, a triplet and a quartet, in its NMR spectrum. Identify the compound from the following. 


 

In the following reaction, X is an intermediate and Y is one of the end products. 

Which one of the following compounds is the end product Y? 


 

Which one of the following compounds is the simplest alkane that is optically active? 


 

The following carboxylic acids have a general formula, R-COOH.
(i) HCOOH
(ii) CH\(_3\) - COOH
(iii) ClCH\(_2\) - COOH
(iv) CF\(_3\) - COOH
Which one of the following represents the decreasing order of their respective pK\(_a\) values?
Which one of the following ions has the maximum number of unpaired electrons?

For an ideal gas at room temperature, choose the CORRECT representation(s) of Boyle's Law. 
(P = Pressure, V = Volume, T = Temperature) 

The volume (in mL) required to prepare 350 mL of 1X buffer solution from a fifty times (50X) concentrated buffer stock solution is ..........
In a typical mammalian cell, the protein content is 20 % of its net weight. If the density and volume of the cell are 1.2 g/mL and 4 × 10\(^{-9}\) mL, respectively, then the concentration (in mg/mL) of the protein is

H\(_2\) reacts with trans-(Ph\(_3\))\(_2\)Ir(CO)Cl to primarily produce .......... 

Among the following species, the metal center that has the highest number of unpaired electrons 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 (+) ...........