NTA JEE Main 26th July 2022 Shift 2 - Chemistry

Download PDF
For the following questions answer them individually
NTA JEE Main 26th July 2022 Shift 2 - Chemistry - Question 31

Hemoglobin contains $$0.34\%$$ of iron by mass. The number of Fe atoms in $$3.3 \text{ g}$$ of hemoglobin is (Given: Atomic mass of Fe is $$56u$$, $$N_A = 6.022 \times 10^{23} \text{ mol}^{-1}$$)

NTA JEE Main 26th July 2022 Shift 2 - Chemistry - Question 33

Arrange the following in increasing order of their covalent character.
(A) $$CaF_2$$
(B) $$CaCl_2$$
(C) $$CaBr_2$$
(D) $$CaI_2$$
Choose the correct answer from the options given below.

JEE Daily Targets
NTA JEE Main 26th July 2022 Shift 2 - Chemistry - Question 34

Class XII students were asked to prepare one litre of buffer solution of pH $$8.26$$ by their chemistry teacher. The amount of ammonium chloride to be dissolved by the student in $$0.2M$$ ammonia solution to make one litre of the buffer is (Given $$pK_b(NH_3) = 4.74$$; Molar mass of $$NH_3 = 17 \text{ g mol}^{-1}$$. Molar mass of $$NH_4Cl = 53.5 \text{ g mol}^{-1}$$)

NTA JEE Main 26th July 2022 Shift 2 - Chemistry - Question 35

Given below are two statements:one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: Phenolphthalein is a pH dependent indicator, remains colourless in acidic solution and gives pink colour in basic medium.
Reason R: Phenolphthalein is a weak acid. It doesn't dissociate in basic medium.
In the light of the above statements, choose the most appropriate answer from the options given below

NTA JEE Main 26th July 2022 Shift 2 - Chemistry - Question 36

Given below are two statements:one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: LiF is sparingly soluble in water.
Reason R: The ionic radius of $$Li^+$$ ion is smallest among its group members, hence has least hydration enthalpy.
In the light of the above statements, choose the most appropriate answer from the options given below.

JEE Mains Mock Tests
NTA JEE Main 26th July 2022 Shift 2 - Chemistry - Question 37

Given below are two statements:one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: Boric acid is a weak acid.
Reason R: Boric acid is not able to release $$H^+$$ ion on its own. It receives $$OH^-$$ ion from water and releases $$H^+$$ ion.
In the light of the above statements, choose the most appropriate answer from the options given below.

NTA JEE Main 26th July 2022 Shift 2 - Chemistry - Question 38

The correct decreasing order of priority of functional groups in naming an organic compound as per IUPAC system of nomenclature is

Jee Mains Previous Papers
NTA JEE Main 26th July 2022 Shift 2 - Chemistry - Question 41

At $$30°C$$, the half life for the decomposition of $$AB_2$$ is $$200 \text{ s}$$ and is independent of the initial concentration of $$AB_2$$. The time required for $$80\%$$ of the $$AB_2$$ to decompose is (Given: $$\log 2 = 0.30$$; $$\log 3 = 0.48$$)

NTA JEE Main 26th July 2022 Shift 2 - Chemistry - Question 42

Given below are two statements:one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: Finest gold is red in colour, as the size of the particles increases, it appears purple then blue and finally gold.
Reason R: The colour of the colloidal solution depends on the wavelength of light scattered by the dispersed particles.
In the light of the above statements, choose the most appropriate answer from the options given below

JEE Question Bank
NTA JEE Main 26th July 2022 Shift 2 - Chemistry - Question 44

The products obtained from a reaction of hydrogen peroxide and acidified potassium permanganate are

Cracku Banner
NTA JEE Main 26th July 2022 Shift 2 - Chemistry - Question 48

The correct sequential order of the reagents for the given reaction is

image
Cracku Banner
JEE Daily Targets
NTA JEE Main 26th July 2022 Shift 2 - Chemistry - Question 52

A $$10 \text{ g}$$ mixture of hydrogen and helium is contained in a vessel of capacity $$0.0125 \text{ m}^3$$ at $$6 \text{ bar}$$ and $$27°C$$. The mass of helium in the mixture is ______ g. (Given: $$R = 8.3 \text{ J K}^{-1} \text{ mol}^{-1}$$)(Atomic masses of H and He are 1u and 4u, respectively)

Backspace
789
456
123
0.-
Clear All
NTA JEE Main 26th July 2022 Shift 2 - Chemistry - Question 53

For the reaction $$H_2F_2(g) \rightarrow H_2(g) + F_2(g)$$
$$\Delta U = -59.6 \text{ kJ mol}^{-1}$$ at $$27°C$$
The enthalpy change for the above reaction is $$-$$ ______ $$\text{kJ mol}^{-1}$$ (nearest integer) (Given: $$R = 8.314 \text{ J K}^{-1} \text{ mol}^{-1}$$)

Backspace
789
456
123
0.-
Clear All
NTA JEE Main 26th July 2022 Shift 2 - Chemistry - Question 54

$$20 \text{ mL}$$ of $$0.02M$$ hypo solution is used for the titration of $$10 \text{ mL}$$ of copper sulphate solution, in the presence of excess of KI using starch as an indicator. The molarity of $$Cu^{2+}$$ is found to be ______ $$\times 10^{-2} M$$ (nearest integer)
Given : $$2Cu^{2+}+4I^{-}\rightarrow Cu_{2}I_{2} + I_{2}I_{2} + 2S_{2}O_{3}^{-2} \rightarrow  2I^{-} + S_{4}O_{6}^{-2}$$

Backspace
789
456
123
0.-
Clear All
JEE Mains Mock Tests
NTA JEE Main 26th July 2022 Shift 2 - Chemistry - Question 55

The elevation in boiling point for 1 molal solution of non-volatile solute A is $$3 \text{ K}$$. The depression in freezing point for 2 molal solution of A in the same solvent is $$6 \text{ K}$$. The ratio of $$K_b$$ and $$K_f$$ i.e., $$K_b/K_f$$ is $$1:X$$. The value of $$X$$ is ______.

Backspace
789
456
123
0.-
Clear All
Jee Mains Previous Papers
JEE Question Bank