Class 7 Online Courses

Chapter 2: Class 7 Science Exam Tests

Class 7 Science MCQs - Chapter 2

Atoms and Atom Model Trivia Questions and Answers PDF - 32

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Atoms and Atom Model Trivia Questions PDF Download: Science Quiz 32

MCQ 156: The number and arrangement of electrons in an atom are important because it controls

A) the physical properties of atom
B) the chemical properties of atom
C) the size of atom
D) all of above

MCQ 157: The particles which have equal mass are

A) protons and electrons
B) protons and neutrons
C) neutrons and electrons
D) photons and protons

MCQ 158: The rays that can penetrate into metal are

A) x-rays
B) ultra violet rays
C) gamma rays
D) radio waves

MCQ 159: The symbol of 'neon gas' is

A) Ne
B) Na
C) N
D) Mg

MCQ 160: At room temperature, ionic bonds are

A) gas
B) solids
C) liquids
D) semi solids

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