Physical and Chemical Changes Multiple Choice Questions and Answers 19 PDF Book Download

Physical and chemical changes multiple choice questions (MCQs), physical and chemical changes quiz answers 19 to learn elementary school science online courses. Burning fuels MCQs, physical and chemical changes quiz questions and answers for online elementary education degree. Making ammonia, solids liquids and gases, iron and sulphur, burning fuels test for elementary school teaching certification.

Learn elementary school science MCQs: Making ammonia, solids liquids and gases, iron and sulphur, burning fuels, with choices number of particles per unit volume, number of particles per unit area, mass per unit area, and mass per unit volume for online elementary education degree. Free science study guide for online learning burning fuels quiz questions to attempt multiple choice questions based test.

MCQ on Physical and Chemical Changes Worksheets 19 PDF Book Download

MCQ: Nitrogen is obtained from

  1. gaseous air
  2. liquefied air
  3. solidified air
  4. air spaces in soil

B

MCQ: Reason of low density of gases is

  1. number of particles per unit area
  2. number of particles per unit volume
  3. mass per unit area
  4. mass per unit volume

B

MCQ: Reaction that gives out heat, while taking place is known as

  1. exothermic reaction
  2. endothermic reaction
  3. reversible reaction
  4. substitution reaction

A

MCQ: 'volume' of gases is

  1. indefinite
  2. definite
  3. dependent
  4. reduced

A

MCQ: Compounds made up of hydrogen and carbon are known as

  1. carbohydrates
  2. hydrocarbons
  3. alkanes
  4. alkenes

B