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

An ideal gas expands in volume from 1 × 10⁻³ to 1 × 10⁻² m³ at 300 K against a constant pressure of 1 × 10⁵ Nm⁻². The work done is ______.

The commercial name for calcium oxide is ______.

In curing cement plasters, water is sprinkled from time to time. This helps in ______.

Which of the following on thermal decomposition yields a basic as well as acidic oxide?

The substance not likely to contain CaCO₃ is ______.

Fructose is an example of ______.

Which of the following is an example of polyester?

Which of the following polymers is synthesized using a free radical polymerisation technique?

Nylon threads are made of ______.

How many of the following drugs is/are example(s) of broad spectrum antibiotic?

The structure shown below is of which well-known drug molecule-

Statement I : Penicillin is a bacteriostatic type antibiotic.

Statement II : The general structure of Penicillin is:

Choose the correct option:

Aminoglycosides are usually used as ______.

Sulphonamides act as ______.

The number of chiral alcohol (s) with molecular formula C₄H₁₀O is ______.

Orlon fibres are made up of ______.

Gaseous cyclobutene isomerizes to butadiene in a first order process which has a 'k' value of 3.3 × 10⁻⁴ s⁻¹ at 153°C. The time in minutes it takes for the isomerization to proceed 40% to completion at this temperature is ______. (Rounded-off to the nearest integer)

A s-block element (M) reacts with oxygen to form an oxide of the formula MO₂. The oxide is pale yellow in colour and paramagnetic. The element (M) is ______.

Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R:

Assertion A: Size of Bk³⁺ ion is less than Np³⁺ ion.

Reason R: The above is a consequence of the lanthanoid contraction.

In the light of the above statements, choose the correct answer from the options given below.

The major product formed in the following reaction is: