Question Paper from: IIT JEE Main 2021 TestSeries Paper 1

If element A shows two cationic states +2 and +3 and form oxides in such a way that the ratio of the element showing +2 and +3 state is 1:3 in a compound. The formula of the compound will be.

Reagent A is?

When copper is heated with conc HNO₃. It produces

The mole fraction of glucose in an aqueous solution is 0.2 then the molality of the solution will be

Glucose is an aldose. Which one of the following reactions is not expected with glucose?

Which is the correct arrangement of molecules regarding dipole moment?

Tautomerism is not exhibited by

The number of isomers possible for the octahedral complex [CoCl₂(en)(NH₃)₂]⁺ is

The electron identified by quantum number n and l

(i) n = 4, l = 1

(ii) n = 4, l = 0

(iii) n = 3, l = 0

(iv) n = 3, l = 1

can be placed in order of increasing energy

Predict the product Z in the following series of reactions.

Ethanoic acid $\stackrel{PC{l}_5}{\to }$ X $\underset{AnhyAlC{l}_3}{\overset{C_6{H}_6}{\to }}$ Y $\underset{H_3{O}^{+}}{\overset{C{H}_{3}MgBr}{\to }}$. Z

Which is the correct statement about the gold number?

P₄O₆ reacts with cold water to give

In the first-order reaction t_99.9% is 60 minutes, t_50%of the reaction would be nearly

Select the incorrect statement for B₂H₆

A metal exists as an oxide with the formula M_0.96O. Metal M can exist as M⁺² and M⁺³ in its oxide M_0.96O. The percentage of M⁺³ in the oxide is nearly.

Match the metal ions given in Column - I with the magnetic moments of the ions given in column - II and assign the correct code

All spinel structures have

If E₁, E₂, and E₃ represent respectively the kinetic energies of an electron, $\alpha -$ particle, and a proton each having same de Broglie's wavelength then