[Download PDF] NTA JEE Main 8th January 2020 Shift 2

For the following questions answer them individually

NTA JEE Main 8th January 2020 Shift 2 - Chemistry - Question 26

Preparation of Bakelite proceeds via reactions:

NTA JEE Main 8th January 2020 Shift 2 - Chemistry - Question 27

The increasing order of the atomic radii of the following elements is:
(a) C
(b) O
(c) F
(d) Cl
(e) Br

NTA JEE Main 8th January 2020 Shift 2 - Chemistry - Question 28

Arrange the following bonds according to their average bond energies in descending order:
C-Cl, C-Br, C-F, C-I

NTA JEE Main 8th January 2020 Shift 2 - Chemistry - Question 29

Among the compounds A and B with molecular formula C$$_9$$H$$_{18}$$O$$_3$$, A is having higher boiling point than B. The possible structures of A and B are:

NTA JEE Main 8th January 2020 Shift 2 - Chemistry - Question 30

For the following Assertion and Reason, the correct option is:
Assertion: The pH of water increases with increase in temperature.
Reason: The dissociation of water into H$$^+$$ and OH$$^-$$ is an exothermic reaction.

NTA JEE Main 8th January 2020 Shift 2 - Chemistry - Question 31

Among the reactions (a) - (d), the reaction(s) that does/do not occur in the blast furnace during the extraction of iron is/are:
(a) CaO + SiO$$_2$$ $$\rightarrow$$ CaSiO$$_3$$
(b) 3Fe$$_2$$O$$_3$$ + CO $$\rightarrow$$ 2Fe$$_3$$O$$_4$$ + CO$$_2$$
(c) FeO + SiO$$_2$$ $$\rightarrow$$ FeSiO$$_3$$
(d) FeO $$\rightarrow$$ Fe + $$\frac{1}{2}$$O$$_2$$

NTA JEE Main 8th January 2020 Shift 2 - Chemistry - Question 32

The radius of the second Bohr orbit, in terms of the Bohr radius, $$a_0$$, in Li$$^{2+}$$ is:

NTA JEE Main 8th January 2020 Shift 2 - Chemistry - Question 33

Kjeldahl's method cannot be used to estimate nitrogen for which of the following compounds?

NTA JEE Main 8th January 2020 Shift 2 - Chemistry - Question 34

Consider the following plots of rate constant versus $$\frac{1}{T}$$ for four different reactions. Which of the following orders is correct for the activation energies of these reactions?

NTA JEE Main 8th January 2020 Shift 2 - Chemistry - Question 35

An unsaturated hydrocarbon X absorbs two hydrogen molecules on catalytic hydrogenation, and also gives following reaction:
X $$\xrightarrow[\frac{(ii) Zn}{H_2O}]{(i) O_3}$$ A $$\xrightarrow{[Ag(NH_3)_2]^+}$$ B (3-oxo-hexanedicarboxylic acid). X will be:

NTA JEE Main 8th January 2020 Shift 2 - Chemistry - Question 36

Which of the following compounds is likely to show both Frenkel and Schottky defects in its crystalline form?

NTA JEE Main 8th January 2020 Shift 2 - Chemistry - Question 37

Among (a) - (d), the complexes that can show geometrical isomerism are:
(a) [Pt(NH$$_3$$)$$_3$$Cl]$$^+$$
(b) [Pt(NH$$_3$$)Cl$$_5$$]$$^-$$
(c) [Pt(NH$$_3$$)$$_2$$Cl(NO$$_2$$)]
(d) [Pt(NH$$_3$$)$$_4$$ClBr]$$^{2+}$$

NTA JEE Main 8th January 2020 Shift 2 - Chemistry - Question 38

The major product in the following reaction is:

NTA JEE Main 8th January 2020 Shift 2 - Chemistry - Question 39

White phosphorus on reaction with concentrated NaOH solution in an inert atmosphere of CO$$_2$$ gives phosphine and compound (X). (X) on acidification with HCl gives compound (Y). The basicity of compound (Y) is:

NTA JEE Main 8th January 2020 Shift 2 - Chemistry - Question 40

Hydrogen has three isotopes (A), (B) and (C). If the number of neutron(s) in (A), (B) and (C) respectively, are (x), (y) and (z), the sum of (x), (y) and (z) is

NTA JEE Main 8th January 2020 Shift 2 - Chemistry - Question 41

A metal (A) on heating in nitrogen gas gives compound B. B on treatment with H$$_2$$O gives a colourless gas which when passed through CuSO$$_4$$ solution gives a dark blue-violet coloured solution. A and B respectively, are:

NTA JEE Main 8th January 2020 Shift 2 - Chemistry - Question 42

The major product [B] in the following sequence of reactions is:

NTA JEE Main 8th January 2020 Shift 2 - Chemistry - Question 43

The correct order of the calculated spin-only magnetic moments of complexes (A) to (D) is:
(A) Ni(CO)$$_4$$
(B) [Ni(H$$_2$$O)$$_6$$]Cl$$_2$$
(C) Na$$_2$$[Ni(CN)$$_4$$]
(D) PdCl$$_2$$(PPh$$_3$$)$$_2$$

NTA JEE Main 8th January 2020 Shift 2 - Chemistry - Question 44

Two monomers in maltose are:

NTA JEE Main 8th January 2020 Shift 2 - Chemistry - Question 45

For the following Assertion and Reason, the correct option is:
Assertion: For hydrogenation reactions, the catalytic activity increases from Group 5 to Group 11 metals with maximum activity shown by Group 7-9 elements.
Reason: The reactants are most strongly adsorbed on group 7-9 elements.

NTA JEE Main 8th January 2020 Shift 2 - Chemistry - Question 46

NaClO$$_3$$ is used, even in spacecrafts, to produce O$$_2$$. The daily consumption of pure O$$_2$$ by a person in 492 L at 1 atm, 300K. How much amount of NaClO$$_3$$, in grams, is required to produce O$$_2$$ for the daily consumption of a person at 1 atm, 300K?
NaClO$$_3$$(s) + Fe(s) $$\rightarrow$$ O$$_2$$(g) + NaCl(s) + FeO(s)
R = 0.082 L atm mol$$^{-1}$$ K$$^{-1}$$