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Grade 7 Science MCQs

Grade 7 Science MCQ PDF - Chapter

Physical and Chemical Changes Multiple Choice Questions and Answers PDF p. 5

Practice Physical and chemical changes multiple choice questions and answers, physical and chemical changes quiz answers PDF to solve grade 7 science worksheet 5 for online courses. Practice Polyethene MCQs, physical and chemical changes quiz questions and answers for online school and college. Physical and Chemical Changes MCQ PDF: polyethene, polyvinyl chloride, iron and sulphur, making plastics, solids liquids and gases test prep for taking online classes.

"'Ethene' is composed of" Multiple Choice Questions (MCQ) on physical and chemical changes with choices one carbon and one hydrogen atom, two carbon and three hydrogen atoms, two carbon and four hydrogen atoms, and three carbon and six hydrogen atoms for online school and college. Solve polyethene quiz questions for school certificate programs for free online courses.

MCQs on Physical and Chemical Changes Quiz

MCQ: 'Ethene' is composed of

two carbon and three hydrogen atoms
one carbon and one hydrogen atom
two carbon and four hydrogen atoms
three carbon and six hydrogen atoms

MCQ: To make flexible items a substance is added to PVC. This substance is known as

ester
ketone
halo alkane
plasticizer

MCQ: The symbol of 'sulphur' is

Fe
Su
S
Ti

MCQ: Natural substances made up of long molecules are

plastic and rubber
rubber and wool
wool and plastic
wood and plastic

MCQ: The density of gases is

lower than liquids but higher than solids
lower than solids but higher than liquids
higher than solids and liquids
lower than solids and liquids