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

The water having more dissolved O₂ is ______.

The separation of two coloured substances was done by paper chromatography. The distances travelled by solvent front, substance A and substance B from the baseline are 3.25 cm, 2.08 cm and 1.05 cm respectively. The ratio of R_f values of A to B is ______.

The polymer containing strong intermolecular forces, e.g., hydrogen bonding, is ______.

The polymer formed on heating Novolac with formaldehyde is ______.

Match List - I with List - II:

Choose the correct answer from the options given below:

The artificial sweetener that has the highest sweetness value in comparison to cane sugar is ______.

Which one of the following techniques is not used to spot components of a mixture separated on thin layer chromatographic plate?

In chromatography, which of the following statement is INCORRECT for R_f?

The product formed in the first step of the reaction

\[\begin{array}{cc}
\ce{Br}\phantom{......}\\
|\phantom{.......}\\
\ce{CH3-CH2-CH-CH2-CH-CH3}\\
\phantom{...............}|\\
\phantom{................}\ce{Br}
\end{array}\]

with excess Mg/Et₂O(Et = C₂H₅) is:

Which is the final product ‘A’ (major) in the given reaction?

What is the major product formed by HI on reaction with \[\begin{array}{cc}
\ce{CH3}\phantom{....}\\
|\phantom{.......}\\
\ce{CH3-C-CH = CH2}\\
|\phantom{.......}\\
\ce{H3C}\phantom{.........}
\end{array}\]?

Given below are two statements.

Statements I: The choice of reducing agents for metal extraction can be made by using Ellingham diagram, a plot of ΔG vs temperature.

Statements II: The value of ΔS increases from left to right in Ellingham diagram. In the light of above statements, choose the most appropriate from the options given below:

With respect to an ore, Ellingham diagram helps to predict the feasibility of its.

Which type of isomerism can not be shown by benzaldoxime?

Acetamide is isomer of ______.

Which one of the following pairs are called position isomers?

In blast furnace, the hearth is lined with ______.

The correct stereochemical name of

In the following compounds:

(I)	(II)	(III)	(IV)

The order to acidity is ______.

The minimum uncertainity in velocity of a particle of mass 1.1 × 10^-27 kg if uncertainity in its position is 3 × 10-10 cm will be _____ × 10^-4 ms^-1.