IGNOU BEY 3 2026 - Explain the effect of temperature and pressure on visc

Question

Explain the effect of temperature and pressure on viscosity of liquids and gases with practical examples.

06 Mar 2026

Answer :

Word Count : 275

Viscosity, the resistance of a fluid to flow, is influenced by both temperature and pressure, though the effects vary between liquids and gases. For liquids, as the temperature increases, viscosity typically decreases. This occurs because higher temperatures increase the kinetic energy of the molecules, which in turn reduces the intermolecular forces holding the liquid together. A practical example of this is motor oil: when heated in an engine, its viscosity decreases, allowing it to flow more easily and lubricate engine parts. Conversely, at lower temperatures, the viscosity of liquids increases, which is why motor oil becomes

_________ ___ __________ ______ ____.
_______ __________ __________ _______ ______ _________.
____ _________ _____ _______ _______ _________ __________ _________ ____ ____ ___ _______.
______ _________ ___ _____ _____ __________ ___ _______ _____ _______ ________ ____.
________ ________ _____ ____ ___ __________ ____ _______ _______.
_____ ___ _____ ________ _______.
______ ____ _____ _____ _____ _____ _______.
_____ __________ _________ ______ ____ _____ _________.
___ ______ _____ _______ ______ _____ ________ ________ ________.
____ _________ _________ _____ _______.
_______ _______ __________ _______ _________ ________ _____ _____ __________ _________ ___ ___.
____ _______ ______ ___ _____ __________ __________ ________ _____.
_________ ________ __________ ________ _____ ________ ____ ___ _____ ___ _______.
____ _________ ______ ________ __________ _____ _________ __________ ______.
___ _______ ________ ____ _____ _____ ______ _________ __________ _____ _________.
___ ________ ___ _____ _________ ___ ________.
__________ _________ _________ _________ ______ ___ _____ ________ _________ _________ ______.
_________ ___ _______ ______ ______ _____ ___ _______ ________ _______ ______ ________.
____ _____ ______ ________ _____ __________.
___ ________ ____ _____ _________ _______ ____ ________ ____ _____ ____ __________.
_____ ______.

IGNOU ACADEMY

Your IGNOU journey, made easier.

Solved Assignments
Study Notes
Guess Papers
Question Papers

Call Us WhatsApp

STUDY • PREPARE • SUCCEED

Skip in 10

IGNOU Solved Assignments Assignments Ignou Projects Project Previous Year Solved Exam Papers Notes Notes Sample Question Papers Sample Question Papers