NEET Test 158...

A particle of mass 𝑚 carrying charge +𝑞₁ is revolving around a fixed charge −𝑞₂ in a circular path of radius 𝑟. Calculate the period of revolution.

A rod 𝐴𝐵 of mass 10 𝑘𝑔 and length 4 𝑚 rests on a horizontal floor with end 𝐴 fixed so as to rotate it in a vertical plane about the perpendicular axis passing through 𝐴. If the work done on the rod is 100𝐽, the height to which the end 𝐵 is raised vertically above the floor is

The standard Gibbs free energy change and enthalpy change at 25^∘𝐶 for the liquid phase reaction 𝐶𝐻₃𝐶𝑂𝑂𝐻(𝑙) + 𝐶₂𝐻₅𝑂𝐻(𝑙) → 𝐶𝐻₃𝐶𝑂𝑂𝐶₂𝐻₅(𝑙) + 𝐻₂𝑂 ( l ) are given as 𝐴𝐺⁰ ags = −4650𝐽/𝑚𝑜𝑙 and Δ𝐻⁰₂₉₈ = −3640 J/mol. If the solution is ideal and enthalpy change is assumed to be constant, then the equilibrium constant at 95^∘𝐶 is

A weightless bag is filled with 5 kg of water and then weighed in water. The reading of spring balance is:

A particle moves from position  acts on it. What is the work done by the force?

What is not applicable to ozone?

Which of the following species is not extinct?

A Carnot engine takes in 3000kcal of heat from a reservoir at 627^∘C and gives it to a sink at 27^∘C. The work done by the engine is:

Consider the following statements.

1) First generation biofuels use oil seeds and non food agricultural crops as feedstock.

2) Second generation biofuels use anaerobic digestion and fermentation for conversion.

3) Microalgae are used as feedstock for third generation biofuels.

Which of the statements given above are correct?