Class 7 Science MCQs - Chapter 2

Atoms and Atom Model MCQ with Answers PDF Download - 24

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Class 7 Science: Atoms and Atom Model MCQ Questions PDF Download

MCQ: When the transfer of electrons takes place, the sodium and chlorine atoms turn into

A) ions

B) electrons and protons

C) positrons and negatrons

D) neutrons and photons

MCQ: The activity of organs in a human body can be studied by

A) injected medicines in the body

B) injected chip in human body

C) injected radioisotope in human body

D) injected monitors in the body

MCQ: In element Uranium-235, the combined number of neutrons and protons is

A) 92

B) 235

C) 35

D) 200

MCQ: 'Chlorine' becomes an anion because

A) it loses a proton

B) it gains a proton

C) it loses an electron

D) it gains an electron

MCQ: A material which is made up of one type of atom is known as

A) element

B) compound

C) mixture

D) molecule

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