Physical and Chemical Changes Multiple Choice Questions Test 19 Tests pdf Download

Practice science test 19 on physical and chemical changes MCQs, grade 7 making ammonia multiple choice questions and answers. Making ammonia revision test has science worksheets, answer key with choices as liquefied air, gaseous air, solidified air and air spaces in soil of multiple choice questions (MCQ) with making ammonia quiz as nitrogen is obtained from for competitive exam prep. Free science study guide to learn making ammonia quiz to attempt multiple choice questions based test.

MCQs on Physical and Chemical Changes Quiz pdf Download Worksheets 19

MCQ. Nitrogen is obtained from

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


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


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

  1. Exothermic reaction
  2. Endothermic reaction
  3. Reversible reaction
  4. Substitution reaction


MCQ. Volume of gases is

  1. indefinite
  2. definite
  3. indescribable
  4. dependent on air humidity


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

  1. Carbohydrates
  2. Hydrocarbons
  3. Alkanes
  4. Alkenes