NTA JEE Mains 8th April 2024 Shift 2 - Chemistry

NTA JEE Mains 8th April 2024 Shift 2 - Chemistry - Question 31

Report

Identify the correct statements about p-block elements and their compounds. (A) Non metals have higher electronegativity than metals. (B) Non metals have lower ionisation enthalpy than metals. (C) Compounds formed between highly reactive nonmetals and highly reactive metals are generally ionic. (D) The non-metal oxides are generally basic in nature. (E) The metal oxides are generally acidic or neutral in nature. Choose the correct answer from the options given below :

A

(B) and (D) only

B

(A) and (C) only

C

(D) and (E) only

D

(B) and (E) only

View Solution Video Solution

NTA JEE Mains 8th April 2024 Shift 2 - Chemistry - Question 32

Report

The shape of carbocation is :

A

diagonal pyramidal

B

trigonal planar

C

tetrahedral

D

diagonal

View Solution Video Solution

NTA JEE Mains 8th April 2024 Shift 2 - Chemistry - Question 33

Report

When $$\psi_A$$ and $$\psi_B$$ are the wave functions of atomic orbitals, then $$\sigma^*$$ is represented by :

A

$$\psi_A + 2\psi_B$$

B

$$\psi_A - \psi_B$$

C

$$\psi_A + \psi_B$$

D

$$\psi_A - 2\psi_B$$

View Solution Video Solution

NTA JEE Mains 8th April 2024 Shift 2 - Chemistry - Question 34

Report

The equilibrium $$Cr_2O_7^{2-} \rightleftharpoons 2CrO_4^{2-}$$ is shifted to the right in :

A

an acidic medium

B

a basic medium

C

a neutral medium

D

a weakly acidic medium

View Solution Video Solution

NTA JEE Mains 8th April 2024 Shift 2 - Chemistry - Question 35

Report

Given below are two statements : Statement (I) : A Buffer solution is the mixture of a salt and an acid or a base mixed in any particular quantities. Statement (II) : Blood is naturally occurring buffer solution whose pH is maintained by $$H_2CO_3/HCO_3^-$$ concentrations. In the light of the above statements, choose the correct answer from the options given below :

A

Statement I is true but Statement II is false

B

Both Statement I and Statement II are true

C

Statement I is false but Statement II is true

D

Both Statement I and Statement II are false

View Solution

NTA JEE Mains 8th April 2024 Shift 2 - Chemistry - Question 36

Report

The correct sequence of acidic strength of the following aliphatic acids in their decreasing order is: $$CH_3CH_2COOH$$, $$CH_3COOH$$, $$CH_3CH_2CH_2COOH$$, $$HCOOH$$

A

$$CH_3CH_2CH_2COOH > CH_3CH_2COOH > CH_3COOH > HCOOH$$

B

$$CH_3COOH > CH_3CH_2COOH > CH_3CH_2CH_2COOH > HCOOH$$

C

$$HCOOH > CH_3COOH > CH_3CH_2COOH > CH_3CH_2CH_2COOH$$

D

$$HCOOH > CH_3CH_2CH_2COOH > CH_3CH_2COOH > CH_3COOH$$

View Solution Video Solution

NTA JEE Mains 8th April 2024 Shift 2 - Chemistry - Question 37

Report

IUPAC name of following hydrocarbon (X) is :

A

2-Ethyl-3,6-dimethylheptane

B

2,5,6-Trimethyloctane

C

3,4,7-Trimethyloctane

D

2-Ethyl-2,6-diethylheptane

View Solution

NTA JEE Mains 8th April 2024 Shift 2 - Chemistry - Question 38

Report

Given below are two statements : Statement (I) : Kjeldahl method is applicable to estimate nitrogen in pyridine. Statement (II) : The nitrogen present in pyridine can easily be converted into ammonium sulphate in Kjeldahl method. In the light of the above statements, choose the correct 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 false but Statement II is true

D

Statement I is true but Statement II is false

View Solution

NTA JEE Mains 8th April 2024 Shift 2 - Chemistry - Question 39

Report

In qualitative test for identification of presence of phosphorous, the compound is heated with an oxidising agent. Which is further treated with nitric acid and ammonium molybdate respectively. The yellow coloured precipitate obtained is :

A

$$Na_3PO_4 \cdot 12MoO_3$$

B

$$(NH_4)_3PO_4 \cdot 12MoO_3$$

C

$$MoPO_4 \cdot 21NH_4NO_3$$

D

$$(NH_4)_3PO_4 \cdot 12(NH_4)_2MoO_4$$

View Solution Video Solution

NTA JEE Mains 8th April 2024 Shift 2 - Chemistry - Question 40

Report

The emf of cell 

It could be increased by :

A

decreasing concentration of both $$Tl^+$$ and $$Cu^{2+}$$ ions

C

increasing concentration of $$Tl^+$$ ions

D

increasing concentration of both $$Tl^+$$ and $$Cu^{2+}$$ ions

View Solution

NTA JEE Mains 8th April 2024 Shift 2 - Chemistry - Question 41

Report

The reaction; $$\frac{1}{2}H_{2(g)} + AgCl_{(s)} \rightarrow H^+_{(aq)} + Cl^-_{(aq)} + Ag_{(s)}$$ occurs in which of the following galvanic cell :

A

$$Ag \left| AgCl_{(s)} \right| KCl_{(soln.)} \left| AgNO_{3(aq.)} \right| Ag$$

B

$$Pt \left| H_{2(g)} \right| HCl_{(soln.)} \left| AgCl_{(s)} \right| Ag$$

C

$$Pt \left| H_{2(g)} \right| KCl_{(soln.)} \left| AgCl_{(s)} \right| Ag$$

D

$$Pt \left| H_{2(g)} \right| HCl_{(soln.)} \left| AgNO_{3(aq)} \right| Ag$$

View Solution

NTA JEE Mains 8th April 2024 Shift 2 - Chemistry - Question 42

Report

For a reaction $$A \xrightarrow{K_1} B \xrightarrow{K_2} C$$. If the rate of formation of $$B$$ is set to be zero then the concentration of $$B$$ is given by :

A

$$(K_1 + K_2)[A]$$

B

$$(K_1/K_2)[A]$$

C

$$(K_1 - K_2)[A]$$

D

$$K_1 K_2[A]$$

View Solution Video Solution

NTA JEE Mains 8th April 2024 Shift 2 - Chemistry - Question 43

Report

Identify the incorrect statements about group 15 elements : (A) Dinitrogen is a diatomic gas which acts like an inert gas at room temperature. (B) The common oxidation states of these elements are $$-3, +3$$ and $$+5$$. (C) Nitrogen has unique ability to form $$p\pi - p\pi$$ multiple bonds. (D) The stability of $$+5$$ oxidation states increases down the group. (E) Nitrogen shows a maximum covalency of 6. Choose the correct answer from the options given below :

A

(A), (C), (E) only

B

(B), (D), (E) only

C

(D) and (E) only

D

(A), (B), (D) only

View Solution Video Solution

NTA JEE Mains 8th April 2024 Shift 2 - Chemistry - Question 44

Report

Given below are two statements : Statement (I) : Fusion of $$MnO_2$$ with KOH and an oxidising agent gives dark green $$K_2MnO_4$$. Statement (II) : Manganate ion on electrolytic oxidation in alkaline medium gives permanganate ion. In the light of the above statements, choose the correct answer from the options given below :

A

Statement I is true but Statement II is false

B

Both Statement I and Statement II are false

C

Statement I is false but Statement II is true

D

Both Statement I and Statement II are true

View Solution Video Solution

NTA JEE Mains 8th April 2024 Shift 2 - Chemistry - Question 45

Report

Match List - I with List - II.

Choose the correct answer from the options given below :

A

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

B

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

C

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

D

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

View Solution Video Solution

NTA JEE Mains 8th April 2024 Shift 2 - Chemistry - Question 46

Report

Given below are two statements : Statement (I) : $$S_N2$$ reactions are 'stereospecific', indicating that they result in the formation of only one stereo-isomer as the product. Statement (II) : $$S_N1$$ reactions generally result in formation of product as racemic mixtures. In the light of the above statements, choose the correct answer from the options given below :

A

Both Statement I and Statement II are false

B

Statement I is false but Statement II is true

C

Statement I is true but Statement II is false

D

Both Statement I and Statement II are true

View Solution Video Solution

NTA JEE Mains 8th April 2024 Shift 2 - Chemistry - Question 47

Report

Which one of the following compounds will readily react with dilute NaOH?

A

$$C_2H_5OH$$

B

$$C_6H_5OH$$

C

$$C_6H_5CH_2OH$$

D

$$(CH_3)_3COH$$

View Solution

NTA JEE Mains 8th April 2024 Shift 2 - Chemistry - Question 48

Report

Match List - I with List - II.

Choose the correct answer from the options given below :

A

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

B

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

C

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

D

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

View Solution

NTA JEE Mains 8th April 2024 Shift 2 - Chemistry - Question 49

Report

Match List - I with List - II.

Choose the correct answer from the options given below :

A

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

B

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

C

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

D

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

View Solution

NTA JEE Mains 8th April 2024 Shift 2 - Chemistry - Question 50

Report

Given below are two statements : Statement (I) : All the following compounds react with p-toluenesulfonyl chloride. $$C_6H_5NH_2$$, $$(C_6H_5)_2NH$$, $$(C_6H_5)_3N$$. Statement (II) : Their products in the above reaction are soluble in aqueous NaOH. In the light of the above statements, choose the correct answer from the options given below :

A

Statement I is false but Statement II is true

B

Statement I is true but Statement II is false

C

Both Statement I and Statement II are true

D

Both Statement I and Statement II are false

View Solution

NTA JEE Mains 8th April 2024 Shift 2 - Chemistry - Question 51

Report

Wavenumber for a radiation having wavelength $$5800 \text{ Å}$$ is $$x \times 10 \text{ cm}^{-1}$$. The value of $$x$$ is _____.

Backspace
789
456
123
0.-
Clear All

Submit

View Solution Video Solution

NTA JEE Mains 8th April 2024 Shift 2 - Chemistry - Question 52

Report

Number of molecules having bond order 2 from the following molecules is _____ : $$C_2, O_2, Be_2, Li_2, Ne_2, N_2, He_2$$

Backspace
789
456
123
0.-
Clear All

Submit

View Solution

NTA JEE Mains 8th April 2024 Shift 2 - Chemistry - Question 53

Report

$$\Delta_{vap}H^{\ominus}$$ for water is $$+40.79 \text{ kJ mol}^{-1}$$ at 1 bar and $$100°C$$. Change in internal energy for this vapourisation under same condition is _____ $$\text{kJ mol}^{-1}$$. (Given $$R = 8.3 \text{ JK}^{-1}\text{mol}^{-1}$$)

Backspace
789
456
123
0.-
Clear All

Submit

View Solution Video Solution

NTA JEE Mains 8th April 2024 Shift 2 - Chemistry - Question 54

Report

Total number of optically active compounds from the following is ____

Backspace
789
456
123
0.-
Clear All

Submit

View Solution Video Solution

NTA JEE Mains 8th April 2024 Shift 2 - Chemistry - Question 55

Report

Total number of aromatic compounds among the following compounds is _____

Backspace
789
456
123
0.-
Clear All

Submit

View Solution

NTA JEE Mains 8th April 2024 Shift 2 - Chemistry - Question 56

Report

A solution is prepared by adding 1 mole ethyl alcohol in 9 mole water. The mass percent of solute in the solution is _____ (Given : Molar mass in g/mol: Ethyl alcohol : 46, water: 18)

Backspace
789
456
123
0.-
Clear All

Submit

View Solution Video Solution

NTA JEE Mains 8th April 2024 Shift 2 - Chemistry - Question 57

Report

Molality of an aqueous solution of urea is 4.44 m. Mole fraction of urea in solution is $$x \times 10^{-3}$$. Value of $$x$$ is _____.

Backspace
789
456
123
0.-
Clear All

Submit

View Solution

NTA JEE Mains 8th April 2024 Shift 2 - Chemistry - Question 58

Report

Total number of unpaired electrons in the complex ions $$[Co(NH_3)_6]^{3+}$$ and $$[NiCl_4]^{2-}$$ is _____

Backspace
789
456
123
0.-
Clear All

Submit

View Solution Video Solution

NTA JEE Mains 8th April 2024 Shift 2 - Chemistry - Question 59

Report

Two moles of benzaldehyde and one mole of acetone under alkaline conditions using aqueous NaOH after heating gives $$x$$ as the major product. The number of $$\pi$$ bonds in the product $$x$$ is _____

Backspace
789
456
123
0.-
Clear All

Submit

View Solution

NTA JEE Mains 8th April 2024 Shift 2 - Chemistry - Question 60

Report

The total number of carbon atoms present in tyrosine, an amino acid, is _____

Backspace
789
456
123
0.-
Clear All

Submit

View Solution Video Solution