JEE Main 2020 (Online) 3rd September Morning Slot

An organic compound [A], molecular formula C10H20O2
was hydrolyzed with dilute sulphuric acid to
give a carboxylic acid [B] and an alcohol [C]. Oxidation of [C] with CrO3
- H2SO4
produced [B].
Which of the following strucutres are not po...

Which one of the following compounds possesses the most acidic hydrogen?

Glycerol is separated in soap industries by :

Of the species, NO, NO+, NO2+ and NO-
, the one with minimum bond strength is :

It is true that :

The antifertility drug “Novestrol” can react with :

The Kjeldahl method of Nitrogen estimation fails for which of the following reaction products?

The electronic spectrum of [Ti(H2O)6]3+ shows a single broad peak with a maximum at 20,300 cm-1
.
The crystal field stabilization energy (CFSE) of the complex ion, in kJ mol-1, is :

The complex that can show optical activity is :

Let CNaCl
and CBaSO4 be the conductances (in S) measured for saturated aqueous solutions of NaCl
and BaSO4, respectively, at a temperature T.
Which of the following is false?

The photoelectric current from Na (Work function, w0
= 2.3 eV) is stopped by the output voltage of
the cell Pt(s) | H2
(g, 1 Bar) | HCl (aq., pH =1) | AgCl(s) | Ag(s).
The pH of aq. HCl required to stop the photoelectric current form K(w0
...

Thermal power plants can lead to :

The mechanism of SN1 reaction is given as :

A student writes general characteristics based
on the given mechanism as :
(a) The reaction is favoured by weak
nucleophiles.
(b) R+ would be easily formed if the
substituents are bulky.
(c) The ...

Which of the following compounds produces an optically inactive compound on hydrogenation?

The total number of monohalogenated organic
products in the following (including
stereoisomers) reaction is ______.

If the boiling point of H2O is 373 K, the boiling point of H2S will be :

An acidic buffer is obtained on mixing :

Aqua regia is used for dissolving noble metals (Au, Pt, etc.). The gas evolved in this process is :

In a molecule of pyrophosphoric acid, the number of P - OH, P = O and P - O - P bonds/moiety(ies)
respectively are :

The atomic number of the element unnilennium is :

An element with molar mass 2.7 \(\times\) 10-2 kg mol-1 forms a cubic unit cell with edge length 405 pm. If its
density is 2.7 \(\times\) 103
kg m-3, the radius of the element is approximately ______ \(\times\) 10-12 m (to the
neares...

Henry’s constant (in kbar) for four gases \(\alpha\), \(\beta\), \(\gamma\) and \(\delta\) in water at 298 K is given below :

.tg {border-collapse:collapse;border-spacing:0;}
.tg td{border-color:black;border-style:solid;border-width:1...

The mole fraction of glucose (C6H12O6
) in an aqueous binary solution is 0.1. The mass percentage of
water in it, to the nearest integer, is _______.

The volume strength of 8.9 M H2O2
solution calculated at 273 K and 1 atm is ______. (R = 0.0821 L
atm K-1 mol-1) (rounded off ot the nearest integer)

Tyndall effect is observed when: