Quiz # 12

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#1 Nail polish remover contains ?

Acetone is one of the main components in nail polish remover. The formula is C3H6O. Acetone is made up of carbon, hydrogen, and oxygen combined.

#2 What nucleus of atom contains ?

The nucleus, that dense central core of the atom, contains both protons and neutronsElectrons are outside the nucleus in energy levels. Protons have a positive charge, neutrons have no charge, and electrons have a negative charge. A neutral atom contains equal numbers of protons and electrons.

#3 The isotope atoms differ in ?

The atoms of a chemical element can exist in different types. These are called isotopes. They have the same number of protons (and electrons), but different numbers of neutrons. Different isotopes of the same element have different masses.

#4 Human bone does not contain

Human bone contains calcium, carbon, phosphorous.

#5 Homo nuclear molecules contain ?

Homonuclear diatomic molecules include hydrogen (H2), oxygen (O2), nitrogen (N2) and all of the halogens. Ozone (O3) is a common triatomic homonuclear moleculeHomonuclear tetratomic molecules include arsenic (As4) and phosphorus (P4).

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ATTEMPT IN HINDI
January 2, 2020

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