Physical and Chemical Changes Multiple Choice Questions 19 PDF Download

Practice physical and chemical changes MCQs, grade 7 science test 19 for online courses learning and test prep, making ammonia multiple choice questions and answers. Making ammonia revision test includes science worksheets to learn.

Science multiple choice questions (MCQ) on nitrogen is obtained from with options liquefied air, gaseous air, solidified air and air spaces in soil, making ammonia quiz for competitive exam prep, viva interview questions with answers key. 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. The 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. The reaction that gives out heat, while taking place is known as

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


MCQ. The 'volume' of gases is

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


MCQ. The compounds made up of hydrogen and carbon are known as

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