NTA JEE Main 3rd September 2020 Shift 2 - Chemistry

The strengths of 5.6 volume hydrogen peroxide (of density 1 g/mL) in terms of mass percentage and molarity(M) respectively, are: (Take molar mass of hydrogen peroxide as 34 g/mol)

Consider the hypothetical situation where the azimuthal quantum number, $$\ell$$, takes values 0, 1, 2, ......... n + 1. Where n is the principal quantum number. Then, the element with atomic number:

The five successive ionization enthalpies of an element are 800, 2427, 3658, 35024, 32824 kJ mol$$^{-1}$$. The number of valence electrons in the element is:

Consider the following molecules and statements related to them:

(a) (B) is more likely to be crystalline than (A)
(b) (B) has higher boiling point than (A)
(c) (B) dissolves more readily than (A) in water
Identify the correct option from below:

A mixture of one mole each of $$H_2$$, He and $$O_2$$ each are enclosed in a cylinder of volume V at temperature T. If the partial pressure of $$H_2$$ is 2 atm, the total pressure of the gases in the cylinder is:

100 mL of 0.1 M HCl is taken in a beaker and to it 100 mL 0.1 M NaOH of is added in steps of 2 mL and the pH is continuously measured. Which of the following graphs correctly depicts the change in pH?

Among the statements (I - IV), the correct ones are:
(I) Be has smaller atomic radius compared to Mg.
(II) Be has higher ionization enthalpy than Al.
(III) Charge/radius ratio of Be is greater than that of Al.
(IV) Both Be and Al form mainly covalent compounds

The incorrect statement(s) among (a) - (d) regarding acid rain is (are):
(a) It can corrode water pipes
(b) It can damage structures made up of stone.
(c) It cannot cause respiratory ailments in animals
(d) It is not harmful for trees

For the reaction $$2A + 3B + \frac{3}{2}C \to 3P$$, which statement is correct?

The incorrect statement is:

Complex A has a composition of $$H_{12}O_6Cl_3Cr$$. If the complex on treatment with conc. $$H_2SO_4$$ loses 13.5% of its original mass, the correct molecular formula of A is:
[Given: atomic mass of Cr = 52 amu and Cl = 35 amu]

The d-electron configuration of $$[Ru(en)_3]Cl_2$$, and $$[Fe(H_2O)_6]Cl_2$$ respectively are:

The decreasing order of reactivity of the following compounds towards nucleophilic substitution ($$S_N2$$) is:

The major product in the following reaction is:

Consider the following reaction:

The product 'P' gives positive ceric ammonium nitrate test. This is because of the presence of which of these -OH group(s)?

The increasing order of the reactivity of the following compounds in nucleophile addition reaction is:
Propanal, Benzaldehyde, Propanone, Butanone

The compound A in the following reactions is:
$$A \xrightarrow[(ii)Conc. H_{2}SO_{4}/ \Delta]{(i)CH_{3}MgBr/H_{2}O} B \xrightarrow[(ii) Zn/H_{2}O]{(i) O_{3}} C + D$$

Three isomers A, B and C (mol. formula $$C_8H_{11}N$$) give the following results:
A and C $$\xrightarrow{Diazotization}$$ P + Q $$\xrightarrow[(ii) acidation(KMnO_4+H^+)]{(i) Hydrolysis}$$ R (product of A) + S (product of C)
R has lower boiling point than S
B $$\xrightarrow{C_6H_5SO_2Cl}$$ alkali-insoluble product
A, B and C, respectively are:

An ionic micelle is formed on the addition of:

Match the following drugs with their therapeutic actions:
(i) Ranitidine                                        (a) Antidepressant
(ii) Nardil (Phenelzine)                        (b) Antibiotic
(iii) Chloramphenicol                           (c) Antihistamine
(iv) Dimetane (Brompheniramine)   (d) Antacid
                                                                (e) Analgesic

$$0.023 \times 10^{22}$$ molecules are present in 10g of a substance 'x'. The molarity of a solution containing 5g of substance 'x' in 2 L solution is _________ $$\times 10^{-3}$$

If 250 cm$$^3$$ of an aqueous solution containing 0.73g of a protein A is isotonic with one litre of another aqueous solution containing 1.65g of a protein B, at 298K, the ratio of the molecular masses of A and B is _________ $$\times 10^{-2}$$ (to the nearest integer).

An acidic solution of dichromate is electrolyzed for 8 minutes using 2 A current. As per the following equation $$Cr_2O_7^{2-} + 14H^+ + 6e^- \to 2Cr^{3+} + 7H_2O$$
The amount of $$Cr^{3+}$$ obtained was 0.104g. The efficiency of the process (in %) is (Take: F = 960000C, At. mass of chromium = 52)

The volume (in mL) of 0.1 N NaOH required to neutralise 10 mL of 0.1 N phosphinic acid is __________.

The number of 

groups present in a tripeptide Asp - Glu - Lys is ____