Elements and Compounds Multiple Choice Questions and Answers 8 pdf eBooks Download

Learn elements and compounds MCQs, grade 7 online science test 8, what is element multiple choice questions and answers. What is element revision test has science worksheets, helping answer key with choices as hydrolysis, electrolysis, photolysis and photosynthesis of multiple choice questions (MCQ) with what is element quiz as the process which involves in breaking down element by passing electricity through it is called for competitive exam prep, viva interview questions. Free science study guide to practice what is element quiz to attempt multiple choice questions based test.

MCQs on Elements and Compounds Quiz pdf Download Worksheets 8

MCQ. Process which involves in breaking down element by passing electricity through it is called

  1. electrolysis
  2. hydrolysis
  3. photolysis
  4. photosynthesis

A

MCQ. Chinese thought that number of elements were

  1. 3
  2. 4
  3. 2
  4. 5

D

MCQ. Low densities, low melting, low boiling point and poor conductivity are found in

  1. metals
  2. non metals
  3. alkalis
  4. metalloids

B

MCQ. Air ships and balloons use gas called

  1. oxygen
  2. hydrogen
  3. helium
  4. neon

C

MCQ. A compound which yields in black solid, copper oxide and colorless gas carbon dioxide on heating, is

  1. copper carbonate
  2. iron sulfide
  3. sodium chloride
  4. copper chloride

A