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

Refining using liquation method is the most suitable for metals with ______.

Which of the following represents log P vs log V variation as per Boyle's law?

The correct order of electron gain enthalpy (−ve value) is ______.

The dipole moments of CCl₄, CHCl₃ and CH₄ are in the order:

Phenyl magnesium bromide reacts with methanol to give ______.

Which among the following pairs has only herbicides?

The major product formed when 1, 1, 1-trichloropropane is treated with aqueous potassium hydroxide, is ______.

The major product [B] in the following reactions is:

\[\begin{array}{cc}\ce{CH3}\phantom{..................................}\\|\phantom{.....................................}\\\ce{CH3 - CH2 - CH - CH2 - OCH2 - CH3 ->[HI][Heat] [A] alcohol ->[H2SO4][\Delta] [B]}\end{array}\]

Williamson's synthesis of ether is an example of ______.

HBr reacts with \[\ce{CH2 = CH - OCH3}\] under anhydrous conditions at room temperature to give ______.

Which one of the following compounds will liberate CO₂, when treated with NaHCO₃?

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?

Which polymer has 'chiral' monomer(s)?

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

Consider the species CH₄, `"NH"_4^+` and `"BH"_4^-`. Choose the correct option with respect to these species.

Number of lone pair(s) of electrons on central atom and the shape of BrF₃ molecule respectively are ______.

The cell potential for the given cell at 298 K Pt | H₂ (g, 1 bar) | H⁺ (aq) | | Cu²⁺ (aq) | Cu(s) is 0.31 V. The pH of the acidic solution is found to be 3, whereas the concentration of Cu²⁺ is 10^-x M. The value of x is ______.

[Given: (\[\ce{E_{Cu^{2+}/Cu}}\]) = 0.34 V and `(2.303 " RT")/"F"` = 0.06 V]

Kjeldahl’s method was used for the estimation of nitrogen in an organic compound. The ammonia evolved from 0.55 g of the compound neutralised 12.5 mL of 1 M H₂SO₄ solution. The percentage of nitrogen in the compound is ______. (Nearest integer)