Class 7 Science MCQs - Chapter 18
Physical and Chemical Changes Multiple Choice Questions (MCQs) PDF Download - 21
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The Book Physical and chemical changes Multiple Choice Questions and Answers (MCQs), physical and chemical changes MCQ PDF Download, Free Ch. 18-21 to study class 7 science online courses. Practice Iron and Sulphur MCQs PDF, physical and chemical changes quiz questions and answers to learn online classes courses. The Physical and Chemical Changes MCQs App Download: Free learning app for iron and sulphur, physical changes, making ammonia, making plastics test prep for online degree programs.
The Multiple Choice Question (MCQ Quiz): Color of solid iron is; "Physical and Chemical Changes" App Download (Free) with answers brown, green, grey and black to learn online classes courses. Solve iron and sulphur quiz questions, download Google eBook (Free Sample) for online classes.
Physical and Chemical Changes Questions & Answers PDF Download: MCQ Quiz 21
MCQ 101: The color of solid iron is
- green
- brown
- grey
- black
MCQ 102: Alteration of material without changing its chemical make-up is known as
- physical change
- chemical variation
- biological change
- chemical change
MCQ 103: The exothermic reaction of two elements, iron and sulfur, form the compound,
- iron only
- sulphur only
- iron and sulphur both
- iron sulfide
MCQ 104: 'Ammonia' is an important component of
- water
- soil
- fertilizers
- insecticides
MCQ 105: The name of the chemist who started plastic industry, is
- George Conner
- Alex Martin
- Leo Baekeland
- Robin Norman
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