NEET 2022

188 Questions • 200 Minutes • 2022

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Find the emf of the cell in which the following reaction takes place at 298 K $Ni(s) + 2Ag^+ (0.001\ M) \rightarrow Ni^{2+} (0.001\ M) + 2Ag(s)$ (Given that $E^\circ_{cell} = 10.5\ V$, $\frac{2.303RT}{F} = 0.059$ at 298 K)

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For a first order reaction A$\rightarrow$Products, initial concentration of A is 0.1 M, which becomes 0.001 M after 5 minutes. Rate constant for the reaction in $min^{-1}$ is

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Match List-I with List-II. [table] List-I (Ores) | List-II (Composition) ; A. Haematite | (i) $Fe_3O_4$ ; B. Magnetite | (ii) $ZnCO_3$ ; C. Calamine | (iii) $Fe_2O_3$ ; D. Kaolinite | (iv) $[Al_2(OH)_4Si_2O_5]$ [/table] Choose the correct answer from the options given below:

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In the neutral or faintly alkaline medium, $KMnO_4$ oxidises iodide into iodate. The change in oxidation state of manganese in this reaction is from

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The order of energy absorbed which is responsible for the color of complexes A. $[Ni(H_2O)_2(en)_2]^{2+}$ B. $[Ni(H_2O)_4(en)]^{2+}$ and C. $[Ni(en)_3]^{2+}$ is

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Given below are two statements: Statement I: In Lucas test, primary, secondary and tertiary alcohols are distinguished on the basis of their reactivity with conc. HCl + $ZnCl_2$, known as Lucas Reagent. Statement II: Primary alcohols are most reactive and immediately produce turbidity at room temperature on reaction with Lucas Reagent. In the light of the above statements, choose the most appropriate answer from the options given below:

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Which one of the following is not formed when acetone reacts with 2-pentanone in the presence of dilute NaOH followed by heating?

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Plane angle and solid angle have :

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The dimension $[MLT^{-2}A^{-2}]$ belong to the :

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The ratio of the distance traveled by a freely falling body in the $1^{st}$, $2^{nd}$, $3^{rd}$ and $4^{th}$ second :

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A shell of mass m is at rest initially. It explodes into three fragments having mass in the ratio 2 : 2 : 1. If the fragments having equal mass fly off along mutually perpendicular directions with speed v, the speed of the third (lighter) fragment is:

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An electric lift with a maximum load of 2000 kg (lift + passengers) is moving up with a constant speed of $1.5\ ms^{-1}$. The frictional force opposing the motion is 3000 N. The minimum power delivered by the motor to the lift in watts is : (g = 10 $ms^{-2}$)

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The energy that will be ideally radiated by a 100 kW transmitter in 1 hour is :

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The angular speed of a fly wheel moving with uniform angular acceleration changes from 1200 rpm to 3120 rpm in 16 seconds. The angular acceleration in $rad/s^2$ is :

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The ratio of the radius of gyration of a thin uniform disc about an axis passing through it centre and normal to its plane to the radius of gyration of the disc about its diameter is:

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Two objects of mass 10 kg and 20 kg respectively are connected to the two ends of a rigid rod of length 10 m with negligible mass. The distance of the centre of mass of the system from the 10 kg mass is :

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A body of mass 60 g experiences a gravitational force of 3.0 N, when placed at a particular point. The magnitude of the gravitational field intensity at that point is :

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If a soap bubble expands, the pressure inside the bubble :

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If the initial tension on a stretched string is doubled, then the ratio of the initial and final speed of a transverse wave along the string is :

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Two hollow conducting sphere of radii $R_1$ and $R_2$ ($R_1 >> R_2$) have equal charges. The potential would be:

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Paper Info

Exam: NEET
Year: 2022
Questions: 188
Duration: 200 mins

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