IGCSE A Level Chemistry Competitive Exam MCQs – Mock Test 179

Catalysts Notes Questions with Answers PDF Download – Test 179

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Free "Catalysts Notes" App Download (Android & iOS): When molecules become bonded to atoms on the surface of a solid the process is termed as; MCQ with answers: chemisorptions only, adsorption only, adsorption and chemisorptions, and desorption. Learn Reaction Kinetics Questions and Answers, Apple Book to download free chapter to enhance chemistry virtual literacy.

Catalysts MCQs – Mock Test 179 PDF Download

MCQ 891: When molecules become bonded to atoms on the surface of a solid the process is termed as:

adsorption only
chemisorptions only
desorption
adsorption and chemisorptions

MCQ 892: In Group-IV, melting point decreases:

down the group
across the period (left to right)
across the period (right to left)
up the group

MCQ 893: Reactions which take place on 10-14 to 10-15 seconds are termed as:

Nano chemistry
Femtochemistry
Microchemistry
Biochemistry

MCQ 894: The molecule which fits into a specific site of the enzyme is called:

substance
substrate
products
reactant

MCQ 895: The overall reaction in the series of proper steps is termed as:

mechanism
reaction
reaction mechanism
none of above

IGCSE A Level Chemistry Notes App & eBook – Catalysts Competitive Exam

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