JEE Main entrance exam Question Bank Solutions for Chemistry (JEE Main)

Which one of the following compounds has the smallest bond angle in its molecule?

The number of acyclic structural isomers (including geometrical isomers) for pentene are ______.

Compound with molecular formula C₃H₆O can show ______.

Which of the following pairs of compounds are positional isomers?

Biuret test is not given by ______.

The major product obtained in the photo catalysed bromination of 2-methylbutane is ______.

Of the five isomeric hexanes, the isomer which can give two monochlorinated compounds is ______.

Which of the following reactions will not produce a racemic product?

The activation energy of one of the reactions in a biochemical process is 532611 J mol^–1. When the temperature falls from 310 K to 300 K, the change in rate constant observed is k₃₀₀ = x × 10^–3 k₃₁₀. The value of x is ______.

[Given: ln 10 = 2.3, R = 8.3 J K^–1 mol^–1]

The equation k = `(6.5 xx 10^12 "s"^(-1))"e"^(- 26000 " K"//"T")` is followed for the decomposition of compound A. The activation energy for the reaction is ______ kJ mol^-1. (Nearest integer) (Given: R = 8.314 JK^-1 mol^-1)

\[\ce{C6H12O6 ->[(Zymase)] A ->[NaOH][\Delta] B + CHI3}\]

The number of carbon atoms present in the product B is:

According to the valence bond theory, the hybridization of central metal atom is dsp² for which one of the following compounds?

Match List I with List II.

Choose the correct answer from the options given below:

The vapour pressures of pure liquids A and B are 400 and 600 mm Hg, respectively at 298 K On mixing the two liquids, the sum of their initial volumes is equal to the volume of the final mixture. The mole fraction of liquids B is 0.5 in the mixture. The vapour pressure of the final solution, the mole fractions of components A and B in vapour phase, respectively are ______.

What would be the product when ethene is oxidised with cold dil. KMnO₄ solution?

Heating of MgCl₂ 6H₂O in absence of HCl gives ______.

The decomposition of N₂O into N₂ and O₂ in the presence of gaseous argon follows second-order kinetics, with k = (5.0 × 10¹¹ L mol⁻¹ s⁻¹) `"e"^(-(29000  "K")/"T")`. Arrhenius parameters are ______ kJ mol⁻¹.

Carbon deposition reaction taking place in ______.

If the value of K_sp for Hg₂Cl₂ (s) is X then the value of X will be ____ where pX = - log X.
Given:

\[\ce{Hg2Cl2 + 2e- -> 2Hg(l) + 2Cl-}\],  E° = 0.27 V

\[\ce{Hg+2 + 2e- -> 2Hg(l)}\]   E° = 0.81 V

The spectral lines of atomic hydrogen wave number is equal to the difference between the wave numbers of the following two lines of the Balmer series: 486.1 and 410.2 nm. The wavelength of that line is  ______ × 10^-4 cm.