List of top Chemistry Questions asked in IIT JAM BT

Group I	Group II
P) NaCl	1) Coordination bond
Q) $H_2$	2) Polar covalent bond
R) $Pd-P$ bond in $Pd(PPh_3)_4	3) Covalent bond
S) $C-Cl$ bond in $CH_3Cl $	4) Ionic bond

What is the splitting pattern of proton $H^{a}$ of the following compound in its $^1H NMR$ spectrum?

Which of the following compound(s) is/are aromatic?

Which of the following statement(s) is/are correct for the following compound?

Among $i-BuNH_2, NH_3, Me_2NH, EtNH_2,$ the number of compound(s) more basic than $MeNH_2$ is/are ______.

Among $K^+, Li^+, Rb^+, Cs^+$, the number of cation(s) having ionic radii more than $Na^+$ is/are _____.

Among the five fragments given below, <br> the number of fragment(s) accelerated to the analyzer tube in mass spectrometer with electron ionization is/are _________.

A protein solution of 1 µM has transmission of 40 % at 280 nm, when measured in a 1 cm cuvette using a UV-Visible spectrophotometer. The transmission of the same solution, when measured using a 2 cm cuvette is ______ %. (rounded off to the nearest integer)

Consider a first order reaction 𝐴 → 𝐵. The initial concentration of 𝐴 is $100 mol L^{-1}$ and the value of first order rate constant is 0.01 $min^{-1}$. The concentration of 𝐴 after 10 min of reaction is ____ $ mol L^{-1}$ (rounded off to one decimal place).

In the 1'H NMR spectrum of ethanol at 400 MHz, the methyl group splits into ___number of peaks.

Assuming the molecule shown below is aromatic, the value of "s" according to "Hückel's rule" is

A double stranded DNA molecule of total 5000 base pairs long, has a melting temperature of 85 °C. What will be the % AT base pairs in this sample? (up to one decimal place).

Amongst the molecules given below, the total number of molecules that have at least one sp² hybridized atom is___.
$C_6H_6, NO_2, BF_3, H_2O_2,SO_2,C_2H_2, L$ -Tryptophan

Major product formed in the given reaction is

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?