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For instance, honey has a much higher viscosity than water. Viscosity is measured using a viscometer. Measured values span several orders of magnitude. Of all fluids, gases have the lowest viscosities, and thick liquids have the highest.
Which has the highest viscosity?
The correct answer is Honey. Viscosity: S I unit: Pascal seconds (Pa·s) or kg·m−1·s−1. It is the property of a liquid representing the internal resistance of its different layers to motion.
Which of the following substances have the highest viscosity?
The main factor that affects the viscosity of a liquid is the intermolecular force of attraction. But there are other factors too, like- shape of individual molecules or the temperature. By looking at these values, it can be concluded that Glycerine is the most viscous substance from the given list.
Which of the following liquid has highest viscosity?
Among glycol, ethanol and water, the liquid with maximum viscosity is glycol because glycol exhibits stronger hydrogen bonding than ethanol and water due to the presence of two −OH groups.
What is highly viscous?
A fluid that is highly viscous has a high resistance (like having more friction) and flows slower than a low-viscosity fluid. To think of viscosity in everyday terms, the easier a fluid moves, the lower the viscosity. Honey would move slower than water, so honey would have a greater viscosity.
How do you know which substance has the highest viscosity?
Viscosity is governed by the strength of intermolecular forces and especially by the shapes of the molecules of a liquid. Liquids whose molecules are polar or can form hydrogen bonds are usually more viscous than similar nonpolar substances.
What is fluid viscosity?
viscosity, resistance of a fluid (liquid or gas) to a change in shape, or movement of neighbouring portions relative to one another. Viscosity denotes opposition to flow. The reciprocal of the viscosity is called the fluidity, a measure of the ease of flow. Molasses, for example, has a greater viscosity than water.
Which of the following substances has the highest surface tension?
There is only one liquid having higher surface tension and that’s mercury which is a liquid metal with a surface tension of almost 500 mN/m.
Which of the following is viscosity?
Viscosity is the resistance of the fluid to change its shape or movement of neighbouring portions relative to one another. The viscosity of the fluid is the fluid’s opposition to flow. Viscosity is measured in terms of a ratio of shearing stress to the velocity gradient in a fluid.
What is high and low viscosity?
Fluids with low viscosity have a low resistance and shear easily and the molecules flow quickly; high viscosity fluids move sluggishly and resist deformation. Some liquids, like pitch, glass and peanut butter, have such high viscosity they behave like solids. For example, water at 20°C has a viscosity of 1.002 cPs.
What is the highest viscosity of magma?
The magma that has the highest viscosity is rhyolitic magma.
What causes high viscosity?
Hyperviscosity can be caused by your blood cells changing shape or by an increase in serum proteins, red blood cells, white blood cells, or platelets. The reduced blood flow caused by hyperviscosity syndrome is a dangerous phenomenon and can have far-reaching effects on the whole body.
Is high viscosity thick or thin?
In layman’s terms, viscosity defines a fluid’s resistance to flow. The higher the viscosity of a liquid, the thicker it is and the greater the resistance to flow.
Which of the following liquids would have the highest viscosity at 25oc?
From the given compounds C2H5OH will have the highest viscosity.
Which of the following substances has the strongest intermolecular forces?
The strongest intermolecular force is hydrogen bonding, which is a particular subset of dipole-dipole interactions that occur when a hydrogen is in close proximity (bound to) a highly electronegative element (namely oxygen, nitrogen, or fluorine).
Which of the following substances has the highest boiling point?
HF has the highest boiling point.
Which of the following has lower viscosity?
Which of the following liquids has the highest viscosity ? Which of the following substances has the greatest viscosity? Which has the maximum viscosity? Which has the maximum viscosity ?May 26, 2020.
Which of these fluids has the highest viscosity Mcq?
Syrup has the highest viscosity.
What is a high viscosity oil?
Viscosity is a measurement of the internal cohesiveness of an oil, better known as its resistance to flow. High Viscosity oils have molecules with greater cohesion ability (Higher resistance to flow) were as low viscosity oils have lower cohesion ability (Low resistance to flow) allowing faster flow rates to occur.
Is water high viscosity?
Viscosity describes a fluid’s internal resistance to flow and may be thought of as a measure of fluid friction. Thus, water is “thin”, having a low viscosity, while vegetable oil is “thick” having a high viscosity.
What volcanoes have high viscosity?
In contrast to shield volcanoes, there are stratovolcanoes, like Mt. St. Helens. These volcanoes produce sticky, higher viscosity magma (andesite and rhyolite) that does not travel very far.
What igneous rock has the highest viscosity?
Summary Table Magma Type Solidified Volcanic Rock Viscosity Mafic or Basaltic Basalt Low Intermediate or Andesitic Andesite Intermediate Felsic or Rhyolitic Rhyolite High.
Does lava have high viscosity?
Even though lava is 100,000 times more viscous than water, it can still flow great distances. When lava has low viscosity, it can flow very easily over long distances. But most importantly, highly viscous lava is associated with explosive eruptions and dangerous pyroclastic flows.
Which magma type has the highest silica content?
MAGMA COMPOSITION AND ROCK TYPES SiO2 CONTENT MAGMA TYPE VOLCANIC ROCK ~50% Mafic Basalt ~60% Intermediate Andesite ~65% Felsic (low Si) Dacite ~70% Felsic (high Si) Rhyolite.
Why glycerol is highly viscous?
Glycerol has three hydrogen bonds which results in an extensive hydrogen bonding. That is why glycerol is highly viscous.
What are the types of viscosity?
Types of Viscosity & When to Apply Them Dynamic (absolute) viscosity – the measurement of the fluid’s internal resistance to flow when force is applied. Kinematic viscosity – refers to the ratio of dynamic viscosity to density, or a measurement of the viscosity of a fluid in motion.
What is a high plasma viscosity level?
Typically, distilled water at 20oC will have a viscosity of 1.00mPas (millipascal-second), whereas normal plasma at 37oC may have a viscosity of around 1.3-1.7mPas . The higher the result, the more viscous (or “thicker”) the blood is.
