General Science 7th Class English Medium Chapter 4 Online Test With Answers

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General Science 7th Class English Medium Chapter 4 Online Test

Sr. # Questions Answers Choice
1 Positively charged particle of an atom is called. Electron Proton Atom Neutron
2 The particles of an element having different mass numbers. Proton Neutrons Isotopes Atoms
3 The mass of an atom is almost due to the. Electron Proton Nucleus Neutrons
4 Formula showing maximum number of electrons in a shell. n2 2n2 3n2 4n2
5 How many periods are there is the Periodic table. Five Six Seven Eight
6 Atomic number of element presetnin period 2 and group 15 of the periodic table. 4 5 6 7
7 The particle of an atom having negative charge on it. Electron Proton Neutron Nucleus
8 The total numebr of electrons which M shell can accommodate 2 8 18 32
9 Letter K is used to express theshell around the nucleus of an atom. 1st 2nd 3rd 4th
10 The central part of an atom is called. Electron Proton Neutron Nucleus
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