NTA JEE Main 24th June 2022 Shift 2 - Chemistry

NTA JEE Main 24th June 2022 Shift 2 - Chemistry - Question 31

Report

$$120$$ g of an organic compound which contains only carbon and hydrogen on complete combustion gives $$330$$ g of $$CO_2$$ and $$270$$ g of water. The percentage of carbon and hydrogen in the organic compound are respectively

A

25 and 75

B

40 and 60

C

60 and 40

D

75 and 25

View Solution Video Solution

NTA JEE Main 24th June 2022 Shift 2 - Chemistry - Question 32

Report

The energy of one mole of photons of radiation of wavelength $$300$$ nm is (Given :
$$h = 6.63 \times 10^{-34}$$ J s, $$N_A = 6.02 \times 10^{23}$$ mol$$^{-1}$$, $$c = 3 \times 10^{8}$$ m s$$^{-1}$$)

A

235 kJ mol$$^{-1}$$

B

325 kJ mol$$^{-1}$$

C

399 kJ mol$$^{-1}$$

D

435 kJ mol$$^{-1}$$

View Solution Video Solution

NTA JEE Main 24th June 2022 Shift 2 - Chemistry - Question 33

Report

Metals generally melt at very high temperatures, Among the following which one has the highest melting point?

A

Ga

B

Ag

C

Hg

D

Cs

View Solution Video Solution

NTA JEE Main 24th June 2022 Shift 2 - Chemistry - Question 34

Report

The correct order of bond orders of $$C_2^{2-}$$, $$N_2^{2-}$$ and $$O_2^{2-}$$ is

A

$$C_2^{2-} > N_2^{2-} > O_2^{2-}$$

B

$$O_2^{2-} > N_2^{2-} > C_2^{2-}$$

C

$$N_2^{2-} > O_2^{2-} > C_2^{2-}$$

D

$$C_2^{2-} > O_2^{2-} > N_2^{2-}$$

View Solution Video Solution

NTA JEE Main 24th June 2022 Shift 2 - Chemistry - Question 35

Report

At $$25°$$C and 1 atm pressure, the enthalpies of combustion are as given below:

Substance	$$H_2$$	C (graphite)	$$C_2H_6(g)$$
$$\frac{\Delta_c H^\ominus}{kJ mol^{-1}}$$	$$-286.0$$	$$-394.0$$	$$-1560.0$$

The enthalpy of formation of ethane is

A

$$+54.0$$ kJ mol$$^{-1}$$

B

$$-68.0$$ kJ mol$$^{-1}$$

C

$$-86.0$$ kJ mol$$^{-1}$$

D

$$+97.0$$ kJ mol$$^{-1}$$

View Solution Video Solution

NTA JEE Main 24th June 2022 Shift 2 - Chemistry - Question 36

Report

Which one of the following compounds is used as a chemical in certain type of fire extinguishers

A

Washing soda

B

Baking soda

C

Caustic soda

D

Soda ash

View Solution Video Solution

NTA JEE Main 24th June 2022 Shift 2 - Chemistry - Question 37

Report

Arrange the following carbocations in decreasing order of stability.

A

$$A > C > B$$

B

$$B > A > C$$

C

$$C > B > A$$

D

$$C > A > B$$

View Solution Video Solution

NTA JEE Main 24th June 2022 Shift 2 - Chemistry - Question 38

Report

Given below are two statements.
Statement I: The presence of weaker $$\pi$$-bonds make alkenes less stable than alkanes
Statement II: The strength of the double bond is greater than that of carbon-carbon single bond.
In the light of the above statements, choose the correct answer from the options given below.

A

Both Statement I and Statement II are correct.

B

Both Statement I and Statement II are incorrect.

C

Statement I is correct but Statement II is incorrect.

D

Statement I is incorrect but Statement II is correct.

View Solution

NTA JEE Main 24th June 2022 Shift 2 - Chemistry - Question 39

Report

Which of the following reagents / reactions will convert 'A' to 'B'?

A

PCC oxidation

B

Ozonolysis

C

$$BH_3, H_2O_2/ -OH$$ followed by PCC oxidation

D

HBr, hydrolysis followed by oxidation by $$K_2Cr_2O_7$$.

View Solution Video Solution

NTA JEE Main 24th June 2022 Shift 2 - Chemistry - Question 40

Report

Some gases are responsible for heating of atmosphere (green house effect). Identify from the following the gaseous species which does not cause it.

A

$$H_2O$$ vapour

B

$$O_3$$

C

$$N_2$$

D

$$CH_4$$

View Solution Video Solution

NTA JEE Main 24th June 2022 Shift 2 - Chemistry - Question 41

Report

In the industrial production of which of the following, molecular hydrogen is obtained as a bye product.

A

$$Na_2CO_3$$

B

$$NaOH$$

C

$$Na$$ metal

D

$$NaHCO_3$$

View Solution Video Solution

NTA JEE Main 24th June 2022 Shift 2 - Chemistry - Question 42

Report

For a first order reaction, the time required for completion of $$90\%$$ reaction is '$$x$$' times the half life of the reaction. The value of '$$x$$' is
(Given: $$\ln 10 = 2.303$$ and $$\log 2 = 0.3010$$)

A

1.12

B

2.43

C

3.32

D

33.31

View Solution Video Solution

NTA JEE Main 24th June 2022 Shift 2 - Chemistry - Question 43

Report

Which of the following chemical reactions represents Hall-Heroult Process?

A

$$Cr_2O_3 + 2Al \to Al_2O_3 + 2Cr$$

B

$$2Al_2O_3 + 3C \to 4Al + 3CO_2$$

C

$$FeO + CO \to Fe + CO_2$$

D

$$2[Au(CN)_2]^-(aq) + Zn(s) \to 2Au(s) + [Zn(CN)_4]^{2-}$$

View Solution Video Solution

NTA JEE Main 24th June 2022 Shift 2 - Chemistry - Question 44

Report

$$PCl_5$$ is well known but $$NCl_5$$ is not. Because,

A

N - does not have vacant d-orbital

B

P - does not have 2d orbitals

C

Back bonding in $$NCl_5$$ is not possible

D

N atom is more electronegative so does not forms 5 bonds

View Solution Video Solution

NTA JEE Main 24th June 2022 Shift 2 - Chemistry - Question 45

Report

Transition metal complex with highest value of crystal field splitting $$(\Delta_0)$$ will be

A

$$[Mo(H_2O)_6]^{3+}$$

B

$$[Cr(H_2O)_6]^{3+}$$

C

$$[Os(H_2O)_6]^{3+}$$

D

$$[Fe(H_2O)_6]^{3+}$$

View Solution

NTA JEE Main 24th June 2022 Shift 2 - Chemistry - Question 46

Report

Hex-4-ene-2-ol on treatment with PCC gives 'A'. 'A' on reaction with sodium hypoiodite gives 'B', which on further heating with soda lime gives 'C'. The compound 'C' is

A

2-pentene

B

proponaldehyde

C

2-butene

D

4-methylpent-2-ene

View Solution Video Solution

NTA JEE Main 24th June 2022 Shift 2 - Chemistry - Question 47

Report

The conversion of propan-1-ol to n-butylamine involves the sequential addition of reagents. The correct sequential order of reagents is

A

(i) $$SOCl_2$$ (ii) KCN (iii) $$H_2/Ni$$, $$Na(Hg)/C_2H_5OH$$

B

(i) HCl (ii) $$H_2/Ni$$, $$Na(Hg)/C_2H_5OH$$

C

(i) $$SOCl_2$$ (ii) KCN (iii) $$CH_3NH_2$$

D

(i) HCl (ii) $$CH_3NH_2$$

View Solution Video Solution

NTA JEE Main 24th June 2022 Shift 2 - Chemistry - Question 48

Report

Which of the following is not a condensation polymer?

A

Nylon-6,6

B

Nylon-6

C

Dacron

D

Buna-S

View Solution

NTA JEE Main 24th June 2022 Shift 2 - Chemistry - Question 49

Report

The structure shown below is of which well-known drug molecule?

A

Codeine

B

Morphine

C

Ranitidine

D

Cimetidine

View Solution

NTA JEE Main 24th June 2022 Shift 2 - Chemistry - Question 50

Report

In the flame test of a mixture of salts, a green flame with blue centre was observed. Which one of the following cations may be present?

A

Calcium

B

Copper

C

Barium

D

Strontium

View Solution Video Solution

NTA JEE Main 24th June 2022 Shift 2 - Chemistry - Question 51

Report

At $$300$$ K, a sample of $$3.0$$ g of gas A occupies the same volume as $$0.2$$ g of hydrogen at $$200$$ K at the same pressure. The molar mass of gas A is ______ g mol$$^{-1}$$. (nearest integer) Assume that the behaviour of gases as ideal.
(Given: The molar mass of hydrogen ($$H_2$$) gas is $$2.0$$ g mol$$^{-1}$$.)

Backspace
789
456
123
0.-
Clear All

Submit

View Solution Video Solution

NTA JEE Main 24th June 2022 Shift 2 - Chemistry - Question 52

Report

$$PCl_5$$ dissociates as $$PCl_5(g) \rightleftharpoons PCl_3(g) + Cl_2(g)$$. $$5$$ moles of $$PCl_5$$ are placed in a $$200$$ litre vessel which contains $$2$$ moles of $$N_2$$ and is maintained at $$600$$ K. The equilibrium pressure is $$2.46$$ atm. The equilibrium constant $$K_p$$ for the dissociation of $$PCl_5$$ is ______ $$\times 10^{-3}$$. (nearest integer) (Given: $$R = 0.082$$ L atm K$$^{-1}$$ mol$$^{-1}$$; Assume ideal gas behaviour)

Backspace
789
456
123
0.-
Clear All

Submit

View Solution Video Solution

NTA JEE Main 24th June 2022 Shift 2 - Chemistry - Question 53

Report

Manganese (VI) has ability to disproportionate in acidic solution. The difference in oxidation states of two ions it forms in acidic solution is ______

Backspace
789
456
123
0.-
Clear All

Submit

View Solution Video Solution

NTA JEE Main 24th June 2022 Shift 2 - Chemistry - Question 54

Report

$$0.2$$ g of an organic compound was subjected to estimation of nitrogen by Dumas method in which volume of $$N_2$$ evolved (at STP) was found to be $$22.400$$ mL. The percentage of nitrogen in the compound is ______ [nearest integer] (Given: Molar mass of $$N_2$$ is $$28$$ g mol$$^{-1}$$, Molar volume of $$N_2$$ at STP: $$22.4$$ L)

Backspace
789
456
123
0.-
Clear All

Submit

View Solution Video Solution

NTA JEE Main 24th June 2022 Shift 2 - Chemistry - Question 55

Report

A company dissolves '$$x$$' amount of $$CO_2$$ at $$298$$ K in $$1$$ litre of water to prepare soda water. $$X = $$ ______ $$\times 10^{-3}$$ g. (nearest integer)
(Given: partial pressure of $$CO_2$$ at $$298$$ K $$= 0.835$$ bar. Henry's law constant for $$CO_2$$ at $$298$$ K $$= 1.67$$ kbar. Atomic mass of H, C and O is $$1, 12,$$ and $$6$$ g mol$$^{-1}$$, respectively)

Backspace
789
456
123
0.-
Clear All

Submit

View Solution Video Solution

NTA JEE Main 24th June 2022 Shift 2 - Chemistry - Question 56

Report

The resistance of a conductivity cell containing $$0.01$$ MKCl solution at $$298$$ K is $$1750$$ $$\Omega$$. If the conductivity of $$0.01$$ MKCl solution at $$298$$ K is $$0.152 \times 10^{-3}$$ S cm$$^{-1}$$, then the cell constant of the conductivity cell is ______ $$\times 10^{-3}$$ cm$$^{-1}$$

Backspace
789
456
123
0.-
Clear All

Submit

View Solution Video Solution

NTA JEE Main 24th June 2022 Shift 2 - Chemistry - Question 57

Report

When $$200$$ mL of $$0.2$$ M acetic acid is shaken with $$0.6$$ g of wood charcoal, the final concentration of acetic acid after adsorption is $$0.1$$ M. The mass of acetic acid adsorbed per gram of carbon is ______ g.

Backspace
789
456
123
0.-
Clear All

Submit

View Solution Video Solution

NTA JEE Main 24th June 2022 Shift 2 - Chemistry - Question 58

Report

(a) Baryte, (b) Galena, (c) Zinc blende and (d) Copper pyrites. How many of these minerals are sulphide based? ______

Backspace
789
456
123
0.-
Clear All

Submit

View Solution Video Solution

NTA JEE Main 24th June 2022 Shift 2 - Chemistry - Question 59

Report

Consider the above reaction. The number of $$\pi$$ electrons present in the product 'P' is ______

Backspace
789
456
123
0.-
Clear All

Submit

View Solution Video Solution

NTA JEE Main 24th June 2022 Shift 2 - Chemistry - Question 60

Report

In alanylglycylleucylalanylvaline the number of peptide linkages is: ______

Backspace
789
456
123
0.-
Clear All

Submit

View Solution