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

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.

How many structural isomers possible of the molecular formula C₃H₆O (excluding enol form)?

The o, p-directing but deactivating group is ______.

When a certain metal was irradiated with light of frequency 3.2 × 10¹⁶ Hz, the photoelectrons emitted had twice the kinetic energy as did photoelectrons emitted when the same metal was irradiated with light of frequency 2.0 × 10¹⁶ Hz. The light of frequency v₀ for the metal is ______ × 10¹⁵ Hz.

Assertion A: Magnesium can reduce Al₂O₃ at a temperature below 1350°C, while above 1350°C aluminium can reduce MgO.

Reason R: The melting and boiling points of magnesium are lower than those of aluminium.
In light of the above statements. choose most appropriate answer from the options given below:

An Ellingham diagram provides information about ______.

The wavelength associated with an electron equal to the wavelength of a proton would be ______ × 10³.

(mass of e = 9 × 10⁻²⁸ g; mass of proton = 1.6725 × 10⁻²⁴ g)

0.27 g of a long-chain fatty acid was dissolved in 100 cm³ of hexane. 10 mL of this solution was added dropwise to the surface of the water in a round watch glass. Hexane evaporates and a monolayer is formed. The distance from the edge to centre of the watch glass is 10 cm. What is the height of the monolayer?

[Density of fatty acid = 0.9 g cm⁻³; π = 3]

What is the work function of the metal if the light of wavelength 4000 Å generates photoelectrons of velocity 6 × 10⁵ ms⁻¹ from it?

(Mass of electron = 9 × 10⁻³¹ kg
Velocity of light = 3 × 10⁸ ms⁻¹
Planck's constant = 6.626 × 10⁻³⁴ Js
Charge of electron = 1.6 × 10⁻¹⁹ JeV⁻¹)

The region in the electromagnetic spectrum where the Balmer series lines appear is ______.