NTA JEE Main 15th April 2018 Shift 2 - Chemistry

For per gram of reactant, the maximum quantity of N$$_2$$ gas is produced in which of the following thermal decomposition reactions? (Given: Atomic wt. : Cr = 52u, Ba = 137u)

The de-Broglie's wavelength of electron present in first Bohr orbit of 'H' atom is:

The correct order of electron affinity is:

Which of the following best describes the diagram of molecular orbital?

$$\Delta_r G^\circ$$ at 500 K for substance 'S' in liquid state and gaseous state are +100.7 kcal mol$$^{-1}$$ and +103 kcal mol$$^{-1}$$, respectively. Vapour pressure of liquid 'S' at 500 K is approximately equal to: (R = 2 cal K$$^{-1}$$ mol$$^{-1}$$)

Given (i) 2Fe$$_2$$O$$_3$$(s) $$\rightarrow$$ 4Fe(s) + 3O$$_2$$(g); $$\Delta_r G^\circ$$ = +1487.0 kJ mol$$^{-1}$$
(ii) 2CO(g) + O$$_2$$(g) $$\rightarrow$$ 2CO$$_2$$(g); $$\Delta_r G^\circ$$ = -514.4 kJ mol$$^{-1}$$
Free energy change, $$\Delta_r G^\circ$$ for the reaction 2Fe$$_2$$O$$_3$$(s) + 6CO(g) $$\rightarrow$$ 4Fe(s) + 6CO$$_2$$(g) will be:

At a certain temperature in a 5L vessel, 2 moles of carbon monoxide and 3 moles of chlorine were allowed to reach equilibrium according to the reaction, CO + Cl$$_2$$ $$\rightleftharpoons$$ COCl$$_2$$. At equilibrium, if one mole of CO is present then equilibrium constant (K$$_c$$) for the reaction is:

Following four solutions are prepared by mixing different volumes of NaOH and HCl of different concentrations, pH of which one of them will be equal to 1?

In KO$$_2$$, the nature of oxygen species and the oxidation state of oxygen atom are, respectively:

Lithium aluminium hydride reacts with silicon tetrachloride to form:

The total number of optically active compounds formed in the following reaction is:

On the treatment of the following compound with a strong acid, the most susceptible site for bond cleavage is:

Two compounds I and II are eluted by column chromatography (adsorption of I > II). Which one of the following is a correct statement?

When 2-butyne is treated with H$$_2$$/Lindlar's catalyst, compound X is produced as the major product and when treated with Na/liq. NH$$_3$$ it produces Y as the major product. Which of the following statements is correct?

The major product formed in the following reaction is:

Biochemical oxygen demand (BOD) value can be a measure of water pollution caused by the organic matter. Which of the following statements is correct?

All of the following share the same crystal structure except:

Two 5 molal solutions are prepared by dissolving a non-electrolyte, non-volatile solute separately in the solvents X and Y. The molecular weights of the solvents are M$$_X$$ and M$$_Y$$, respectively where M$$_X$$ = $$\frac{3}{4}$$ M$$_Y$$. The relative lowering of vapour pressure of the solution in X is "m" times that of the solution in Y. Given that the number of moles of solute is very small in comparison to that of solvent, the value of "m" is:

For a first order reaction, A $$\rightarrow$$ P, t$$_{1/2}$$ (half-life) is 10 days. The time required for $$\frac{1}{4}$$th conversion of A (in days) is: (ln 2 = 0.693, ln 3 = 1.1)

If x gram of gas is adsorbed by m gram of adsorbent at pressure P the plot of log $$\frac{x}{m}$$ versus log P is linear. The slope of the plot is: (m and k are constants and n > 1)

In the leaching method, bauxite ore is digested with a concentrated solution of NaOH that produces 'X'. When CO$$_2$$ gas is passed through the aqueous solution of 'X', a hydrated compound 'Y' is precipitated. 'X' and 'Y' respectively are:

In XeO$$_3$$ F$$_2$$, the number of bond pair(s), $$\pi$$-bond(s) and lone pair(s) on Xe atom respectively are:

The number of P - O bonds in P$$_4$$O$$_6$$ is:

The correct order of spin-only magnetic moments among the following is: (Atomic number: Mn = 25, Co = 27, Ni = 28, Zn = 30)

The total number of possible isomers for square planar [Pt(Cl)(NO$$_2$$)(NO$$_3$$)(SCN)]$$^{2-}$$ is:

The major product formed in the following reaction is:

The increasing order of the acidity of the following carboxylic acids is:

The increasing order of diazotisation of the following compounds is:

(a)

Which of the following statements is not true?

The dipeptide, Gln-Gly, on treatment with CH$$_3$$COCl followed by aqueous work up gives: