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The critical reasoning question is based on a short argument, a set of statements, or a plan of action. For each question, select the best answer of the choices given. The size of particles is directly linked to their potential for causing health problems. Small particles less than 10 micrometers in diameter cause the greatest problems, as they can get deep into the lungs and some may get into the bloodstream. One being exposed to such particles can affect both the lungs and the heart of a person. But there are particles that are causing environmental effects too, few of which are given below.  Which among the following below options does not talk about the effects of these particles on the environment?
Consider the following statements: a. Beta particles are negatively charged and are more penetrating than Alpha particles, which are positively charged. b. Gamma particles are neutral and are more penetrating than Beta-particles. c. In general neutral particles can be said to be having very high penetrating power.
Two identical particles have to be distributed among three energy levels. Let rB, rF and rC represent the ratios of probability of finding two particles to that of finding one particle in a given energy state. The subscripts B, F and C correspond to whether the particles are Bosons, Fermions and classical particles, respectively. The rB : rF : rC is equal to
Which of the following statement about the force of attraction between the particles is/are correct? The force of attraction between the particles of the same substance is known as cohesion. The force of attraction is maximum in the particles of solid matter and minimum in the particles of gaseous matter.
The following properties of particles decide whether a given substance will exist as a solid, liquid, or gas: The spaces between the particles. The force of attraction between particles. The amount of movement of particles.
A system of four particles is in X-Y plane of these two particles of masses m are located at (1, 1) and (-1, 1). The remaining two particles each of mass 2m are located at (1, 1) and (-1, -1). The xy component of moment of inertia tensor of the system of particles is
A viscous solution contains particles with a density is to be clarified by centrifugation. The solution density is and its viscosity is 80 cp. The centrifuge has a bowl with and 3 1200 / p ρ = kg m3 ρ = 850 / kg m2r m = 0.02 1 r = 0.01 m and height b=0.25 m. Calculate the critical particle diameter of the largest particles in the exit stream if N=15000 rpm and flow rate q=0.002 m3 /hr?
Consider we have a Double Pipe Heat Exchanger, with the inner tube of Outer diameter 20mm (thickness 2mm) and outer tube of inner diameter 30mm. We have two fluids A & B, we desire to have their flow rates as 15Kg/s and 21Kg/s respectively. What is the value of Hydraulic diameter for the annulus tube?
In Rutherford's experiment, some of the alpha particles got scattered through large angles. Consider the following reasons. 1. Atom has a positively charged core in the centre. 2. The positive charges are not uniformly distributed inside the atom. 3. Alpha particles are fast-moving particles. Which among the above statements is/are correct?
Characteristics of 3 types of soil A, B and C are given below. Which of these is best for growing wheat?  Soil type Particle proportion Water retaining property A Large number of big particles Low B Large numbers of fine particles High C About same number of big and fine particles Moderate