NTA JEE Main 29th June 2022 Shift 2

42.12% (w/v) solution of NaCl causes precipitation of a certain sol in 10 hours. The coagulating value of NaCl for the sol is
[Given: Molar mass: Na = 23.0 g mol$$^{-1}$$; Cl = 35.5 g mol$$^{-1}$$]

Match List I with List II.
List I With Ore       List II Composition
(A) Siderite             (I) FeCO$$_3$$
(B) Malachite         (II) CuCO$$_3$$ · Cu(OH)$$_2$$
(C) Sphalerite         (III) ZnS
(D) Calamine          (IV) ZnCO$$_3$$
Choose the correct answer from the options given below:

Given below are two statements.
Statement I: In CuSO$$_4$$ · 5H$$_2$$O, Cu - O bonds are present.
Statement II: In CuSO$$_4$$ · 5H$$_2$$O, ligands coordinating with Cu (II) ion are O-and S-based ligands.
In the light of the above statements, choose the correct answer from the options given below

The stable carbocation formed in the above reaction is:

Two isomers (A) and (B) with Molar mass 184 g/mol and elemental composition C, 52.2%; H, 49% and Br 42.9% gave benzoic acid and p-bromobenzoic acid, respectively on oxidation with KMnO$$_4$$. Isomer 'A' is optically active and gives a pale yellow precipitate when warmed with alcoholic AgNO$$_3$$. Isomer 'A' and 'B' are, respectively:

In Friedel-Crafts alkylation of aniline, one gets:

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: Dacron is an example of polyester polymer.
Reason R: Dacron is made up of ethylene glycol and terephthalic acid monomers.
In the light of the above statements, choose the most appropriate answer from the options given below.

The mixture of chloroxylenol and terpineol is an example of:

A white precipitate was formed when BaCl$$_2$$ was added to water extract of an inorganic salt. Further, a gas 'X' with characteristic odour was released when the formed white precipitate was dissolved in dilute HCI. The anion present in the inorganic salt is:

The structure of protein that is unaffected by heating is: