¡GoConqr estrena diseño! Cuéntanos qué te parece.

Regístrate gratis

Test

DF05 Powder properties and their importance in pharmacy

Mer Scott 10 preguntas

Hacer el test

Este test tiene tipos de pregunta que se abren en el reproductor de siempre.

Preguntas del test (10)

  1. 1Particles come in a [blank_start]variety[blank_end] of shapes so it is important to have a [blank_start]universal[blank_end] way to express particle size. Particle size is therefore described as the [blank_start]volume[blank_end] of the particle being equal to the volume of the [blank_start]equivalent sphere[blank_end], and then dv = [blank_start]diameter volume[blank_end]. For example the length x breadth x depth of a particle would be equal to [blank_start]4/3πr³[blank_end].
    Particle size could also be expressed as ds; sphere of same surface area, dw; sphere of same weight, and many more.
    1. Avariety
    2. Buniversal
    3. Cvolume
    4. Dequivalent sphere
    5. Ediameter volume
    6. F4/3πr³
  2. 2What kind of graph best represents the usual distribution of particle size?
    1. ABell curve
    2. BHyperbole
    3. CExponential
    4. DLinear with negative slope
  3. 3The smaller the particle sizes the greater the surface area.
    1. AVerdadero
    2. BFalso
  4. 4Particle size is decreased through granulation to improve flow properties.
    1. AVerdadero
    2. BFalso
  5. 5Flowabilty is an important bulk powder characteristic.
    The angle of repose is the [blank_start]maximum[blank_end] angle possible between the [blank_start]surface[blank_end] of a pile of powder & the [blank_start]horizontal plane[blank_end]. It is an indirect method of quantifying flowability. [blank_start]0-25°[blank_end] is very good, [blank_start]25-40°[blank_end] is satisfactory, and [blank_start]>40°[blank_end] indicates bad flowability.
    1. Amaximum
    2. Bsurface
    3. Chorizontal plane
    4. D0-25°
    5. E25-40°
    6. F>40°
  6. 6Choose the incorrect equation.
    1. ABulk volume = Particle volume + volume of spaces between particles (Vb = Vp + V)
    2. BVoid volume = Bulk volume - Particle volume (V = Vb - Vp)
    3. CPorosity = ε = Vb / V
  7. 7Choose the correct equation for bulk density, ρb.
    1. Aρb = m/Vb
    2. Bρb = Vb/m
    3. Cρb = m/Vp
    4. Dρb = Vp/m
  8. 8During tapping, particles gradually pack [blank_start]more[blank_end] efficiently, the powder volume [blank_start]decreases[blank_end] and the tapped density [blank_start]increases[blank_end].
    1. Amore
    2. Bless
    3. Cdecreases
    4. Dincreases
    5. Eincreases
    6. Fdecreases
  9. 9Carr’s compressibility index tells us the relationship between % compressibility and flowability. Carr’s index (%) = ([blank_start]Tapped[blank_end] density − [blank_start]bulk[blank_end] density) / [blank_start]Tapped density[blank_end], then X [blank_start]100[blank_end] to make it a percent. 1-15% compressibility indicates [blank_start]excellent[blank_end] flow, >40% compressibility indicates [blank_start]extremely poor[blank_end] flow.
    1. ATapped
    2. BBulk
    3. CTapped density
    4. DBulk density
    5. E100
    6. Fexcellent
    7. Gextremely poor
  10. 10Uneven powder flow could cause excess [blank_start]entrapped air[blank_end] within powders leading to [blank_start]capping or lamination[blank_end]. It could also increase particle’s [blank_start]friction[blank_end] with die wall, causing [blank_start]lubrication problems[blank_end] and increasing [blank_start]dust contamination[blank_end] risks.
    [blank_start]transfer[blank_end]
    1. Aentrapped air
    2. Bcapping or lamination
    3. Cfriction
    4. Dlubrication problems
    5. Edust contamination
    6. Ftransfer
    7. G.

Información

Descripción
(Formulation) PHCY211 Test sobre DF05 Powder properties and their importance in pharmacy, creado por Mer Scott el 28/04/2018.
Idioma
English
Visitas
7
Valoración
Aún sin valoraciones
Valora este test
Valora este test

Escríbenos

¿Sobre qué es tu mensaje?

¿Qué te parece el nuevo diseño?

¿Te gusta?