NTA JEE Main 29th July 2022 Shift 1 - Chemistry

$$N_2(g) + 3H_2(g) \rightleftharpoons 2NH_3(g)$$
Consider the reaction: . If 20 g of dinitrogen reacts with 5 g of dihydrogen, then the limiting reagent of the reaction and number of moles of $$NH_3$$ formed respectively are

The first ionization enthalpy of Na and Mg, respectively, are: 496, 737 and 786 kJ mol$$^{-1}$$. The first ionization enthalpy (kJ mol$$^{-1}$$) of Al is

Which of the following pair of molecules contain odd electron molecule and an expanded octet molecule?

Number of lone pairs of electrons in the central atom of $$SCl_2$$, $$O_3$$, $$ClF_3$$ and $$SF_6$$, respectively, are

The reaction of zinc with excess of aqueous alkali, evolves hydrogen gas and gives

Lithium nitrate and sodium nitrate, when heated separately, respectively, give

Which among the following pairs of structures will give different products on ozonolysis? (Consider the double bonds in the structures are rigid and not delocalized.)

Which among the following pairs has only herbicides?

100 mL of 5% (w/v) solution of NaCl in water was prepared in 250 mL beaker. Albumin from the egg was poured into NaCl solution and stirred well. This resulted in a/an

In metallurgy the term "gangue" is used for

In following pairs, the one in which both transition metal ions are colourless is

In neutral or faintly alkaline medium, $$KMnO_4$$ being a powerful oxidant can oxidise, thiosulphate almost quantitatively, to sulphate. In this reaction overall change in oxidation state of manganese will be

Considering the above reactions, the compound 'A' and compound 'B' respectively are

Consider the above reaction sequence, the Product 'C' is

A compound 'X' is acidic and it is soluble in NaOH solution, but insoluble in $$NaHCO_3$$ solution. Compound 'X' also gives violet colour with neutral $$FeCl_3$$ solution. The compound 'X' is

Consider the following reaction sequence. The product 'B' is

Which among the following is the strongest Bronsted base?

Consider the above reaction, the compound 'A' is

Which among the following represent reagent 'A'?

Which of the following compounds is an example of hypnotic drug?

The minimum uncertainty in the speed of an electron in one dimensional region of length $$2a_0$$ (Where $$a_0$$ = Bohr radius = 52.9 pm) is _____ km s$$^{-1}$$ (Nearest integer) (Given: Mass of electron $$= 9.1 \times 10^{-31}$$ kg, Planck's constant $$h = 6.63 \times 10^{-34}$$ Js)

When 600 mL of 0.2 M $$HNO_3$$ is mixed with 400 mL of 0.1 M NaOH solution in a flask, the rise in temperature of the flask is _____ $$\times 10^{-2}$$ °C (Enthalpy of neutralisation = 57 kJ mol$$^{-1}$$ and Specific heat of water = 4.2 J K$$^{-1}$$ g$$^{-1}$$) (Neglect heat capacity of flask)

If the solubility product of PbS is $$8 \times 10^{-28}$$, then the solubility of PbS in pure water at 298 K is $$x \times 10^{-16}$$ mol L$$^{-1}$$. The value of x is _____ (Nearest integer) [Given $$\sqrt{2} = 1.41$$]

In bromination of Propyne, with Bromine 1,1,2,2-tetrabromopropane is obtained in 27% yield. The amount of 1,1,2,2-tetrabromopropane obtained from 1 g of Bromine in this reaction is _____ $$\times 10^{-1}$$ g. (Molar Mass: Bromine = 80 g/mol)

Ionic radii of cation $$A^+$$ and anion $$B^-$$ are 102 and 181 pm respectively. These ions are allowed to crystallize into an ionic solid. This crystal has cubic close packing for $$B^-$$. $$A^+$$ is present in all octahedral voids. The edge length of the unit cell of the crystal AB is _____ pm.

If $$O_2$$ gas is bubbled through water at 303 K, the number of millimoles of $$O_2$$ gas that dissolve in 1 litre of water is _____ (Nearest integer) (Given: Henry's Law constant for $$O_2$$ at 303 K is 46.82k bar and partial pressure of $$O_2$$ = 0.920 bar) (Assume solubility of $$O_2$$ in water is too small, nearly negligible)

Resistance of a conductivity cell (cell constant 129 m$$^{-1}$$) filled with 74.5 ppm solution of KCl is 100 $$\Omega$$ (labelled as solution 1). When the same cell is filled with KCl 149 ppm solution of KCl, the resistance is 50 $$\Omega$$ (labelled as solution 2). The ratio of molar conductivity of solution 1 and solution 2 is i.e. $$\frac{\Lambda_1}{\Lambda_2} = x \times 10^{-3}$$. The value of x is _____ (Given, molar mass of KCl is 74.5 g mol$$^{-1}$$)

The reaction between X and Y is first order with respect to X and zero order with respect to Y.

$$[Fe(CN)_6]^{3-}$$ should be an inner orbital complex. Ignoring the pairing energy, the value of crystal field stabilization energy for this complex is $$(-) \Delta_0$$ _____ .

In a linear tetrapeptide (Constituted with different amino acids), (number of amino acids) - (number of peptide bonds) is