Physical and Chemical Changes Multiple Choice Questions 5 PDF Download

Practice physical and chemical changes MCQs, grade 7 online science test 5, polyethene multiple choice questions and answers. Polyethene revision test has science worksheets, helping answer key with choices as 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 of multiple choice questions (MCQ) with polyethene quiz as 'ethene' is composed of for competitive exam prep, viva interview questions. Free science study guide to practice polyethene quiz to attempt multiple choice questions based test.

MCQs on Physical and Chemical Changes Quiz PDF Download Worksheets 5

MCQ. 'Ethene' is composed of

  1. two carbon and three hydrogen atoms
  2. one carbon and one hydrogen atom
  3. two carbon and four hydrogen atoms
  4. three carbon and six hydrogen atoms

C

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

  1. ester
  2. ketone
  3. halo alkane
  4. plasticizer

D

MCQ. The symbol of 'sulphur' is

  1. Fe
  2. Su
  3. S
  4. Ti

C

MCQ. Natural substances made up of long molecules are

  1. plastic and rubber
  2. rubber and wool
  3. wool and plastic
  4. wood and plastic

B

MCQ. The density of gases is

  1. lower than liquids but higher than solids
  2. lower than solids but higher than liquids
  3. higher than solids and liquids
  4. lower than solids and liquids

D