NTA JEE Main 28th July 2022 Shift 1 - Chemistry

NTA JEE Main 28th July 2022 Shift 1 - Chemistry - Question 31

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Identify the incorrect statement from the following.

A

A circular path around the nucleus in which an electron moves is proposed as Bohr's orbit.

B

An orbital is the one electron wave function

C

The existence of Bohr's orbits is supported by hydrogen spectrum.

D

Atomic orbital is characterised by the quantum numbers n and l only

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NTA JEE Main 28th July 2022 Shift 1 - Chemistry - Question 32

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In which of the following pairs, electron gain enthalpies of constituent elements are nearly the same or identical?
(A) Rb and Cs
(B) Na and K
(C) Ar and Kr
(D) I and At
Choose the correct answer from the options given below

A

A & B only

B

B & C only

C

A & C only

D

C & D only

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NTA JEE Main 28th July 2022 Shift 1 - Chemistry - Question 33

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Which of the following relation is not correct?

A

$$\Delta H = \Delta U - P\Delta V$$

B

$$\Delta U = q + W$$

C

$$\Delta S_{sys} + \Delta S_{surr} \geq 0$$

D

$$\Delta G = \Delta H - T\Delta S$$

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NTA JEE Main 28th July 2022 Shift 1 - Chemistry - Question 34

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The metal salts formed during softening of hard water using Clark's method are

A

$$Ca(OH)_2$$ and $$Mg(OH)_2$$

B

$$CaCO_3$$ and $$Mg(OH)_2$$

C

$$Ca(OH)_2$$ and $$MgCO_3$$

D

$$CaCO_3$$ and $$MgCO_3$$

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NTA JEE Main 28th July 2022 Shift 1 - Chemistry - Question 35

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For kinetic study of the reaction of iodide ion with $$H_2O_2$$ at room temperature:
(A) Always use freshly prepared starch solution.
(B) Always keep the concentration of sodium thiosulphate solution less than that of KI solution.
(C) Record the time immediately after the appearance of blue colour.
(D) Record the time immediately before the appearance of blue colour.
(E) Always keep the concentration of sodium thiosulphate solution more than that of KI solution.
Choose the correct answer from the options given below

A

A, B, C only

B

A, D, E only

C

D, E only

D

A, B, E only

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NTA JEE Main 28th July 2022 Shift 1 - Chemistry - Question 36

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Which of the following statement is incorrect?

A

Low solubility of LiF in water is due to its small hydration enthalpy.

B

$$KO_2$$ is paramagnetic.

C

Solution of sodium in liquid ammonia is conducting in nature.

D

Sodium metal has higher density than potassium metal

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NTA JEE Main 28th July 2022 Shift 1 - Chemistry - Question 37

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Match List-I with List-II.

List-I	List-II
A	I. Spiro compound
B	II. Aromatic compound
C	III. Non-planar Heterocyclic compound
D	IV. Bicyclo compound

A

A-II, B-I, C-IV, D-III

B

A-IV, B-III, C-I, D-II

C

A-III, B-IV, C-I, D-II

D

A-IV, B-III, C-II, D-I

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NTA JEE Main 28th July 2022 Shift 1 - Chemistry - Question 38

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Among the following marked proton of which compound shows lowest pKa value?

A

B

C

D

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NTA JEE Main 28th July 2022 Shift 1 - Chemistry - Question 39

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Choose the correct option for the following reactions.

A

'A' and 'B' are both Markovnikov addition products.

B

'A' is Markovnikov product and 'B' is anti-Markovnikov product.

C

'A' and 'B' are both anti-Markovnikov products.

D

'B' is Markovnikov and 'A' is anti-Markovnikov product.

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NTA JEE Main 28th July 2022 Shift 1 - Chemistry - Question 40

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Identify the correct statement for the below given transformation.

A

A - $$CH_3CH_2CH=CH-CH_3$$, B - $$CH_3CH_2CH_2CH=CH_2$$, Saytzeff products

B

A - $$CH_3CH_2CH=CH-CH_3$$, B - $$CH_3CH_2CH_2CH=CH_2$$, Hofmann products

C

A - $$CH_3CH_2CH_2CH=CH_2$$, B - $$CH_3CH_2CH=CHCH_3$$, Hofmann products

D

A - $$CH_3CH_2CH_2CH=CH_2$$, B - $$CH_3CH_2CH=CHCH_3$$, Saytzeff products

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NTA JEE Main 28th July 2022 Shift 1 - Chemistry - Question 41

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Given below are two statements:
Statement I: In polluted water values of both dissolved oxygen and BOD are very low.
Statement II: Eutrophication results in decrease in the amount of dissolved oxygen.
In the light of the above statements, choose the most appropriate answer from the options given below:

A

Both Statement I and Statement II are true

B

Both Statement I and Statement II are false

C

Statement I is true but Statement II is false

D

Statement I is false but Statement II is true

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NTA JEE Main 28th July 2022 Shift 1 - Chemistry - Question 42

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Match List-I with List-II.

List-I	List-II
A. $$Cd(s) + 2Ni(OH)_3(s) \to CdO(s) + 2Ni(OH)_2(s) + H_2O(l)$$	I. Primary battery
B. $$Zn(Hg) + HgO(s) \to ZnO(s) + Hg(l)$$	II. Discharging of secondary battery
C. $$2PbSO_4(s) + 2H_2O(l) \to Pb(s) + PbO_2(s) + 2H_2SO_4(aq)$$	III. Fuel cell
D. $$2H_2(g) + O_2(g) \to 2H_2O(l)$$	IV. Charging of secondary battery

A

A-I, B-II, C-III, D-IV

B

A-IV, B-I, C-IV, D-III

C

A-II, B-I, C-IV, D-III

D

A-II, B-I, C-III, D-IV

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NTA JEE Main 28th July 2022 Shift 1 - Chemistry - Question 43

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Which of the reaction is suitable for concentrating ore by leaching process?

A

$$2Cu_2S + 3O_2 \to 2Cu_2O + 2SO_2$$

B

$$Fe_3O_4 + CO \to 3FeO + CO_2$$

C

$$Al_2O_3 + 2NaOH + 3H_2O \to 2Na[Al(OH)_4]$$

D

$$Al_2O_3 + 6Mg \to 6MgO + 4Al$$

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NTA JEE Main 28th July 2022 Shift 1 - Chemistry - Question 44

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Match List-I with List-II.

List-I	List-II
A. $$4NH_3(g) + 5O_2(g) \to 4NO(g) + 6H_2O(g)$$	I. NO(g)
B. $$N_2(g) + 3H_2(g) \to 2NH_3(g)$$	II. $$H_2SO_4(l)$$
C. $$C_{12}H_{22}O_{11}(aq) + H_2O(l) \to C_6H_{12}O_6 (Glucose) + C_6H_{12}O_6 (Fructose)$$	III. Pt(s)
D. $$2SO_2(g) + O_2(g) \to 2SO_3(g)$$	IV. Fe(s)

A

A-II, B-III, C-I, D-IV

B

A-III, B-II, C-I, D-IV

C

A-III, B-IV, C-II, D-I

D

A-III, B-II, C-IV, D-I

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NTA JEE Main 28th July 2022 Shift 1 - Chemistry - Question 45

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Match List-I with List-II, match the gas evolved during each reaction.

List-I	List-II
A. $$(NH_4)_2Cr_2O_7 \xrightarrow{\Delta}$$	I. $$H_2$$
B. $$KMnO_4 + HCl \to$$	II. $$N_2$$
C. $$Al + NaOH + H_2O \to$$	III. $$O_2$$
D. $$NaNO_3 \xrightarrow{\Delta}$$	IV. $$Cl_2$$

Choose the correct answer from the options given below

A

A-II, B-III, C-I, D-IV

B

A-III, B-I, C-IV, D-II

C

A-II, B-IV, C-I, D-III

D

A-III, B-IV, C-I, D-II

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NTA JEE Main 28th July 2022 Shift 1 - Chemistry - Question 46

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Which of the following has least tendency to liberate $$H_2$$ from mineral acids?

A

Cu

B

Mn

C

Ni

D

Zn

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NTA JEE Main 28th July 2022 Shift 1 - Chemistry - Question 47

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Identify the major product A and B for the below given reaction sequence.

A

B

C

D

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NTA JEE Main 28th July 2022 Shift 1 - Chemistry - Question 48

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Terylene polymer is obtained by condensation of

A

Ethane-1,2-diol and Benzene-1,3 dicarboxylic acid

B

Propane-1,2-diol and Benzene-1,4 dicarboxylic acid

C

Ethane-1,2-diol and Benzene-1,4 dicarboxylic acid

D

Ethane-1,2-diol and Benzene-1,2 dicarboxylic acid

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NTA JEE Main 28th July 2022 Shift 1 - Chemistry - Question 49

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Statements about Enzyme Inhibitor Drugs are given below:
(A) There are Competitive and Non-competitive inhibitor drugs.
(B) These can bind at the active sites and allosteric sites.
(C) Competitive Drugs are allosteric site blocking drugs.
(D) Non-competitive Drugs are active site blocking drugs.
Choose the correct answer from the options given below:

A

A, D only

B

A, C only

C

A, B only

D

A, B, C only

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NTA JEE Main 28th July 2022 Shift 1 - Chemistry - Question 50

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For the below given cyclic hemiacetal X, the correct pyranose structure is

A

B

C

D

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NTA JEE Main 28th July 2022 Shift 1 - Chemistry - Question 51

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In the given reaction, $$X + Y + 3Z \rightleftharpoons XYZ_3$$. If one mole of each of X and Y with 0.05 mol of Z gives compound $$XYZ_3$$. (Given: Atomic masses of X, Y and Z are 10, 20 and 30 amu, respectively). The yield of $$XYZ_3$$ is _____ g.

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NTA JEE Main 28th July 2022 Shift 1 - Chemistry - Question 52

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On complete combustion of 0.492 g of an organic compound containing C, H and O, 0.7938 g of $$CO_2$$ and 0.4428 g of $$H_2O$$ was produced. The % composition of oxygen in the compound is _____ (Nearest Integer)

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NTA JEE Main 28th July 2022 Shift 1 - Chemistry - Question 53

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The number of paramagnetic species among the following is $$B_2, Li_2, C_2, C_2^-, O_2^{2-}, O_2^+$$ and $$He_2^+$$

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NTA JEE Main 28th July 2022 Shift 1 - Chemistry - Question 54

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$$K_a$$ for butyric acid ($$C_3H_7COOH$$) is $$2 \times 10^{-5}$$. The pH of 0.2 M solution of butyric acid is _____ $$\times 10^{-1}$$. (Nearest integer) [Given $$\log 2 = 0.30$$]

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NTA JEE Main 28th July 2022 Shift 1 - Chemistry - Question 55

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An element M crystallises in a body centred cubic unit cell with a cell edge of 300 pm. The density of the element is 6.0 g cm$$^{-3}$$. The number of atoms present in 180 g of the element is _____ $$\times 10^{23}$$. (Nearest integer)

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NTA JEE Main 28th July 2022 Shift 1 - Chemistry - Question 56

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150 g of acetic acid was contaminated with 10.2 g ascorbic acid $$(C_6H_8O_6)$$ to lower down its freezing point by $$x \times 10^{-1}$$ °C. The value of $$x$$ is _____ (Nearest integer). [Given $$K_f = 3.9$$ K kg mol$$^{-1}$$; Molar mass of ascorbic acid = 176 g mol$$^{-1}$$]

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NTA JEE Main 28th July 2022 Shift 1 - Chemistry - Question 57

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For the given first order reaction $$A \to B$$ the half life of the reaction is 0.3010 min. The ratio of the initial concentration of reactant to the concentration of reactant at time 2.0 min will be equal to _____. (Nearest integer)

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NTA JEE Main 28th July 2022 Shift 1 - Chemistry - Question 58

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The number of inter halogens from the following having square pyramidal structure is
$$ClF_3, IF_7, BrF_5, BrF_3, I_2Cl_6, IF_5, ClF, ClF_5$$

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NTA JEE Main 28th July 2022 Shift 1 - Chemistry - Question 59

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The disproportionation of $$MnO_4^{2-}$$ in acidic medium resulted in the formation of two manganese compounds A and B. If the oxidation state of Mn in B is smaller than that of A, then the spin-only magnetic moment $$\mu$$ value of B in BM is _____ (Nearest integer)

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NTA JEE Main 28th July 2022 Shift 1 - Chemistry - Question 60

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Total number of relatively more stable isomer(s) possible for octahedral complex $$[Cu(en)_2(SCN)_2]$$ will be _____

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