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    which of the following values for contact angle with water corresponds to a hydrophobic drug particle?

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    Denton & Rostron: Pharmaceutics

    Chapter 9: Multiple choice questions

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    Which of the following values for contact angle with water corresponds to a hydrophobic drug particle? a) 45 deg b) 120 deg c) 0 deg d) None of the above

    Answer to: Which of the following values for contact angle with water corresponds to a hydrophobic drug particle? a) 45 deg b) 120 deg c) 0 deg d)...

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    Which of the following values for contact angle with water corresponds to a hydrophobic drug...

    Which of the following values for contact angle with water corresponds to a hydrophobic drug... Question:

    Which of the following values for contact angle with water corresponds to a hydrophobic drug particle?

    a) 45° b) 120° c) 0°

    d) None of the above

    Water:

    Water consists of polar bonds and it has the ability to dissolve many solutes in it as well as organic substances. Because of this property of water, it is called a universal solvent.

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    Water Facts: Lesson for Kids

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    Probe interesting facts about water, a vital resource for life on Earth. Discover the atoms that form a water molecule, how much of the Earth is covered with water, the difference between freshwater and saltwater, and other fun facts.

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    स्रोत : homework.study.com

    Adsorption Flashcards

    Study with Quizlet and memorize flashcards containing terms like Which of the following is not an adsorbent? a) Carbon b) Polymers and resins c) Silica gel d) Dry sponge, What do you mean by the term "Sorption"? a) Attachment b) Detachment c) Diffusion d) Thermal Expansion, Which of the following statements regarding the physical adsorption of a gas on surface of solid is not correct? a) On increasing temperature, adsorption increases continuously b) Enthalpy changes are negative c) Adsorption is specific d) It is reversible in nature and more.

    Adsorption

    Term 1 / 12

    Which of the following is not an adsorbent?

    a) Carbon

    b) Polymers and resins

    c) Silica gel d) Dry sponge

    Click the card to flip 👆

    Definition 1 / 12 d) Dry sponge

    Click the card to flip 👆

    Created by alaelamain

    Terms in this set (12)

    Which of the following is not an adsorbent?

    a) Carbon

    b) Polymers and resins

    c) Silica gel d) Dry sponge d) Dry sponge

    What do you mean by the term "Sorption"?

    a) Attachment b) Detachment c) Diffusion

    d) Thermal Expansion

    d) Thermal Expansion

    Which of the following statements regarding the physical adsorption of a gas on surface of

    solid is not correct?

    a) On increasing temperature, adsorption increases continuously

    b) Enthalpy changes are negative

    c) Adsorption is specific

    d) It is reversible in nature

    a) On increasing temperature, adsorption increases continuously

    c) Adsorption is specific

    Which of the following is not characteristic of chemisorption?

    a) It is irreversible

    b) It is specific

    c) It is multilayer phenomenon

    d) Heat of adsorption is about 400kj

    d) Heat of adsorption is about 400kj

    Which type of mechanism is applicable to chromatography?

    a) Absorption and Desorption

    b) Adsorption and Absorption

    c) Adsorption and Desorption

    d) Adsorption and Diffusion

    c) Adsorption and Desorption

    How do insects such as pond skaters stay afloat on water?

    a) Because of high surface tension of water

    b) As they can swim

    c) Because they are less dense than water

    d) None of the above reasons

    a) Because of high surface tension of water

    Cohesive forces are the forces acting...

    a) Between molecules of different materials

    b) Between molecules of same material

    c) Between water and glass capillary tube

    d) Due to gravity

    b) Between molecules of same material

    The contact angle forming between magnesium stearate and water is larger than that between lactose and water because:

    a) Magnesium stearate is more hydrophilic

    b) Magnesium stearate is more hydrophobic

    c) Lactose has more surface energy

    d) Both have equal hydrophilicity

    b) Magnesium stearate is more hydrophobic

    Which of the following values for contact angle with water corresponds to a hydrophobic drug particle?

    a) 45° b) 120° c) 0°

    d) None of the above

    b) 120°

    The Freundlich adsorption isotherm can be used to model:

    a) Multilayer adsorption

    b) Monolayer adsorption

    c) Both

    d) None of the above

    a) Multilayer adsorption

    Which of the following does not have an effect on adsorption from solution onto a solid adsorbent?

    a) Solubility level of solute

    b) Absorption capacity

    c) Temperature of adsorption medium

    d) Surface area of adsorbent

    b) Absorption capacity

    What is the main result of adding surfactants into a liquid composed of two immiscible phases such as oil and water?

    a) Reduction in the interfacial tension between the phases

    b) Increase in the interfacial tension between the phases

    c) Catalysation of a chemical reaction between the phases

    d) Nothing happens

    a) Reduction in the interfacial tension between the phases

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    Verified answer Engineering

    Air flows steadily through a variable area pipe with a velocity of

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    0 \leq x \leq 12

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    \begin{matrix}\text{x (in.)} & \text{u (ft/s)} & \text{x (in.)} & \text{u (ft/s)}\\\text{0} & \text{10.0} & \text{7} & \text{20.1}\\\text{1} & \text{10.2} & \text{8} & \text{17.4}\\\text{2} & \text{13.0} & \text{9} & \text{13.5}\\ \text{3} & \text{20.1} & \text{10} & \text{11.9}\\\text{4} & \text{28.3} & \text{11} & \text{10.3}\\\text{5} & \text{28.4} & \text{12} & \text{10.0}\\\text{6} & \text{25.8} & \text{13} & \text{10.0}\\\end{matrix}

    स्रोत : quizlet.com

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    Mohammed 7 day ago
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