[Download PDF] NTA JEE Main 7th January 2020 Shift 2

For the following questions answer them individually

NTA JEE Main 7th January 2020 Shift 2 - Chemistry - Question 26

The ammonia (NH$$_3$$) released on quantitative reaction of 0.6 g urea (NH$$_2$$CONH$$_2$$) with sodium hydroxide (NaOH) can be neutralized by

NTA JEE Main 7th January 2020 Shift 2 - Chemistry - Question 27

Within each pair of elements F and Cl, S and Se, and Li and Na, respectively, the elements that release more energy upon an electron gain are

NTA JEE Main 7th January 2020 Shift 2 - Chemistry - Question 28

The bond order and the magnetic characteristic of CN$$^-$$ are

NTA JEE Main 7th January 2020 Shift 2 - Chemistry - Question 29

Identify the correct labels of A, B and C in the following graph from the options given below:

Root mean square speed (V$$_{rms}$$); most probable speed (V$$_{mp}$$); Average speed (V$$_{av}$$)

NTA JEE Main 7th January 2020 Shift 2 - Chemistry - Question 30

The redox reaction among the following is

NTA JEE Main 7th January 2020 Shift 2 - Chemistry - Question 31

Among statements (a) - (d), the correct ones are:
(a) Decomposition of hydrogen peroxide gives di-oxygen.
(b) Like hydrogen peroxide, compounds, such as KClO$$_3$$, Pb(NO$$_3$$) and NaNO$$_3$$ when heated liberate di-oxygen.
(c) 2-Ethylanthraquinone is useful for the industrial preparation of hydrogen peroxide.
(d) Hydrogen peroxide is used for the manufacture of sodium perborate.

NTA JEE Main 7th January 2020 Shift 2 - Chemistry - Question 32

The correct order of stability for the following alkoxides is:

NTA JEE Main 7th January 2020 Shift 2 - Chemistry - Question 33

A chromatography column, packed with silica gel as stationary phase, was used to separate a mixture of compounds consisting of (A) benzanilide (B) aniline and (C) acetophenone. When the column is eluted with a mixture of solvents, hexane:ethyl acetate (20 : 80), the sequence of obtained compounds is:

NTA JEE Main 7th January 2020 Shift 2 - Chemistry - Question 34

Two open beakers one containing a solvent and the other containing a mixture of that solvent with a non volatile solute are together sealed in a container. Over time:

NTA JEE Main 7th January 2020 Shift 2 - Chemistry - Question 35

The equation that is incorrect is:

NTA JEE Main 7th January 2020 Shift 2 - Chemistry - Question 36

For the reaction $$2H_2(g) + 2NO(g) \rightarrow N_2(g) + 2H_2O(g)$$ the observed rate expression is, rate $$= k_f[NO]^2[H_2]$$. The rate expression for the reverse reaction is:

NTA JEE Main 7th January 2020 Shift 2 - Chemistry - Question 37

The refining method used when the metal and the impurities have low and high melting temperatures, respectively, is

NTA JEE Main 7th January 2020 Shift 2 - Chemistry - Question 38

In the following reactions, products (A) and (B), respectively, are:
NaOH + Cl$$_2$$ $$\rightarrow$$ (A) + side products (hot and conc.)
Ca(OH)$$_2$$ + Cl$$_2$$ $$\rightarrow$$ (B) + side products (dry)

NTA JEE Main 7th January 2020 Shift 2 - Chemistry - Question 39

The number of possible optical isomers for the complexes MA$$_2$$B$$_2$$ with sp$$^3$$ and dsp$$^2$$ hybridized metal atom, respectively, is:
Note: A and B are unidentate neutral and unidentate monoanionic ligands, respectively.

NTA JEE Main 7th January 2020 Shift 2 - Chemistry - Question 40

Among the statements (a) - (d), the incorrect ones are:
(a) Octahedral Co(III) complexes with strong field ligands have very high magnetic moments
(b) When $$\Delta_0 < P$$, the d-electron configuration of Co(III) in an octahedral complex is $$t_{eg}^4 e_g^2$$
(c) Wavelength of light absorbed by [Co(en)$$_3$$]$$^{3+}$$ is lower than that of [CoF$$_6$$]$$^{3-}$$
(d) If the $$\Delta_0$$ for an octahedral complex of Co(III) is 18,000 cm$$^{-1}$$, the $$\Delta_t$$ for its tetrahedral complex with the same ligand will be 16,000 cm$$^{-1}$$.

NTA JEE Main 7th January 2020 Shift 2 - Chemistry - Question 41

For the following reactions

where:

k$$_s$$ and k$$_e$$ are respectively the rate constants for substitution and elimination, and $$\mu = \frac{k_s}{k_e}$$, the correct option is

NTA JEE Main 7th January 2020 Shift 2 - Chemistry - Question 42

Consider the following reactions:

Which of these reactions are possible?

NTA JEE Main 7th January 2020 Shift 2 - Chemistry - Question 43

In the following reaction sequence, structures of A and B are, respectively

NTA JEE Main 7th January 2020 Shift 2 - Chemistry - Question 44

In the following reaction sequence,

the major product B is

NTA JEE Main 7th January 2020 Shift 2 - Chemistry - Question 45

Which of the following statements is correct?

NTA JEE Main 7th January 2020 Shift 2 - Chemistry - Question 46

The standard heat of formation $$(\Delta_f H_{298}^0)$$ of ethane (in kJ/mol), if the heat of combustion of ethane, hydrogen and graphite are $$-1560$$, $$-393.5$$ and $$-286$$ kJ/mol, respectively is