JEE Main 2020 (Online) 7th January Morning Slot

What is the product of following reaction ?

The increasing order to Pkb for the following compounds will be :

Match the following :
(i) Riboflavin    (a) Beriberi
(ii) Thiamine    (b) Scurvy
(iii) Pyridoxine   (c) Cheliosis
(iv) Ascorbic acid    (d) Convulsions

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

Chlorine reacts with hot and concentrated NaOH and produces compounds (X) and (Y). Compound
(X) gives white precipitate with silver nitrate solution. The average bond order between CI and O
atoms in (Y) is.

The relative strength of interionic/intermolecular forces in decreasing order is :

During the nuclear explosion, one of the products is 90Sr with half life of 6.93 years. If 1 \(\mu\) g of 90Sr was absorbed in the bones of newly born baby in placed of Ca, how much time, in years, is required to reduce much time, in year,...

The number of chiral carbons in chloramphenicol is

Consider the following reaction :

The product 'X' is used :

The IUPAC name of complex [Pt(NH3)2Cl(NH2CH3)]Cl is:

The theory that can completely/properly explain the nature of bonding in [Ni(Co)4] is :

The atomic radius of Ag is closed to :

Given that the standard potentials (Eo) of Cu2+/Cu and Cu+/Cu are 0.34 V and 0.522 V respectively, the Eo of Cu2+/Cu+ :

1- methyl ethylene oxide when treated with an excess of HBr produces :

Consider the following reaction :
\({\left( {C{H_3}} \right)_3}CCH\left( {OH} \right)C{H_3}\buildrel {conc.\,\,\,{H_2}S{O_4}} \over \longrightarrow\)
$${\left( {C{H_3}} \right)_2}CHCH\left( {Br} \right)C{H_3}\buildrel {alc.\,\,KOH} \over
...

In comparison to the zeolite process for the removal of permanent hardness, the synthetic resins
method is :

Two solutions, A and B, each of 100L was made by dissolving 4g of NaOH and 9.8 g of H2SO4 in water, respectively. The pH of the resultant solution obtained from mixing 40L of solution A and 10L of solution B is :

The purest from of commercial iron is :

The electron gain enthalpy (in KJ/mol) of fluorine, chlorine, bromine and iodine, respectively are:

Oxidation number of potassium in K2O. K2O2 and KO2 respectively is :

A solution of m-chloronailimne, m-chlorophenol and m-chlorobenzoic acid in ethyal acetate was extracted initially with a saturated solution of NaHCO3
to give fraction A. The left over organic phase
was extracted with dilute NaoH solution t...

At 35oC, the vapour pressure of CS2
is 512 mm. Hg and that of acetone is 344 mm Hg. A solution
of CS2
in acetone has a total vapour pressure of 600 mm Hg. The false statement amongst the
following is :

Amongst the following statements, that which was not proposed by Dalton was :

The number of orbitals associated with quantum number n = 5, ms = +\({1 \over 2}\) is :

For the reaction :
A(\(l\)) \(\to\) 2B(g)
\(\Delta U = 2.1\,kcal,\,\Delta S = 20\,cal\,{K^{ - 1}}\) at 300 K
Hence \(\Delta\)G in kcal is :