JEE Main 2019 (Online) 10th April Morning Slot

The major product of the following reaction is :

Major products of the following reaction are :

The increasing order of the reactivity of the following compounds towards electrophilic aromatic substitution reactions is :

The principle of column chromatography is :

Amylopectin is compound of :

During the change of O2 to O2-
, the incoming electron goes to the orbital :

The oxoacid of sulphur that does not contain bond between sulphur atoms is

A bacterial infection in an internal wound grows as N'(t) = N0 exp(t), where the time t is in hours. A does of antibiotic, taken orally, needs 1 hour to reach the wound. Once it reaches there, the bacterial population goes down as $${{dN} \...

Ethylamine (C2H5NH2) can be obtained from N-ethylphatalimide on treatment with :

The major product of the following reaction is :

Three complexes,
[CoCl(NH3)5]
2+(I),
[Co(NH3)5H2O]3+ (II) and
[Co(NH3)6]
3+(III)
absorb light in the visible region. The correct order of the wavelength of light absorbed by them is :

The species that can have a trans-isomer is :
(en = ehane-1, 2-diamine, ox = oxalate)

Consider the hydrated ions of Ti2+, V2+, Ti3+, and Sc3+. The correct order of their spin-only magnetic
moments is :

Consider the statements S1 and S2
S1 : Conductivity always increases with decrease in the concentration of electrolyte.
S2 : Molar conductivity always increases with decrease in the concentration of electrolyte.
The correct option among the...

The regions of the atmosphere, where clouds form and where we live, respectively, are :

Consider the following table :

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The major product of the following reaction is :

Increasing rate of SN1 reaction in the following compounds is :

The synonym for water gas when used in the production of methanol is :

Consider the following statements
(a) The pH of a mixture containing 400 mL of 0.1 M H2SO4 and 400 mL of 0.1 M NaOH will be approximately 1.3
(b) Ionic product of water is temperature dependent.
(c) A monobasic acid with Ka = 10–5
has pH =...

Match the refining methods (Column I) with metals (Column II).

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The correct order of catenation is :

Which of the following is a condensation polymer?

The alloy used in the construction of aircrafts is :

At room temperature, a dilute solution of urea is prepared by dissolving 0.60 of urea in 360 g of water. If the
vapour pressure of pure water at this temperature is 35 mm Hg, lowering of vapour pressure will be.
(molar mass of urea = 60 g m...

At 300 K and 1 atmospheric pressure, 10 mL of a hydrocarbon required 55 mL of O2 for complete
combustion, and 40 mL of CO2 is formed. The formula of the hydrocarbon is :

The isoelectronic set of ions is :

The graph between \({\left| \psi \right|^2}\) and r (radial distance) is shown below. This represents :

A gas undergoes physical adsorption on a surface and follows the given Freundlich adsorption isotherm equation
\({x \over m} = k{p^{0.5}}\)
Adsorption of the gas increase with :

A process will be spontaneous at all temperatures if :