Class 7 Science MCQs - Chapter 1
Atoms and Atom Model Quiz Questions & Answers PDF Download - 31
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Atoms and Atom Model Exam Questions and Answers PDF Download: Test 31
Medical instruments can be sterilized using
- heat
- boiled water
- radiations
- energy
Sodium and chlorine are attracted to each other because they are
- ions
- positively charged
- negatively charged
- oppositely charged
The nearest shell to a nucleus is called
- shell A
- shell K
- shell S
- shell C
The number of elements are approximately
- fifty
- eighty
- hundred
- two hundred
Atoms are linked together by chemical bonds. The two common chemical bonds are
- ionic and dative bonds
- ionic and covalent bonds
- dative and covalent bonds
- ionic and metallic bonds
Class 7 Science Mock Tests
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