Daily NEET MCQ- July 15, 2022 - NEET MCQ

We know that reaction quotient Q_c = [HI]t² / [H₂]t[I₂]t and given that [H₂]t=0.10 M, [I₂]t = 0.20 M and [HI]t = 0.40 M, So by substituting, we get Q_c = (0.40 M x 0.40 M)/(0.20 M x 0.10 M) = 8.0, 8 is the answer.

In a reaction, if reaction quotient is less than the equilibrium constant, the reaction quotient will tend to increase and the reaction will proceed in the forward direction till it reaches equilibrium.

For any reversible reaction at any stage other than equilibrium, the ratio of the molar concentrations of the products to that of the reactants, where is concentration term is raised to the power equal to the stoichiometric efficient to the substance concerned is called the reaction quotient, Q_C.

From the law of conservation of energy, we have;
(m x v²)/2 – (G x M x m)/R = -(G x M x m)/(R+h)
m = Mass of object
M = Mass of earth
h = Maximum height of the object
v = Velocity of projection
(m x v²)/2 – (g x m x R) = -(g x m x R²)/(R+h)
(g x R)/2 = (g x R x h)/(R+h)
Therefore; h = R.

Escape velocity (v) = [(2*G*M)/R]^1/2
Mass of moon = (Density) x (Volume)
= (Density) x (Volume of the earth)/50.65;
[Volume is directly proportional to the cube of the radius]
V_moon/v_earth = [(2*G*M_moon)/R_moon^1/2/[(2*G*M_earth)/R_earth]^1/2
= [1/(50.65 x 3.7)] ^½
= 0.07
Therefore; V_moon = 0.07 (v_earth).

Escape velocity (v) = (2*g*R)^1/2
g = Acceleration due to gravity
R = Radius of planet
Given;
R_a/R_b = r
g_a/g_b = p
v_a/v_b = (2*g_a*R_a])^1/2/(2*g_b*R_b) ^1/2
= (p x r)^1/2.

The full form of PPLO is Pleuro Pneumonia Like Organisms. They are a type of prokaryotic organisms, which also include bacteria, blue – green algae and mycoplasma. The lack a true nucleus.

Bacteria have four basic shapes. These are bacillus or rod – shaped, coccus or spherical shape, vibrio or comma shaped and spirillum or spiral shaped. Bacteria are a type of prokaryotic organisms.

All bacteria have a cell wall covering the cell membrane, except in the genus mycoplasma. Since all bacteria are prokaryotic organisms, they do not have a well – defined nucleus. The genetic material is naked.

Plasmids are extrachromosomal small circular DNA that is present in bacterial cell, apart from the genomic DNA. Plasmid DNA confers several special features to the cell such as resistance to certain chemicals.