Chemistry The chemical name of quartz is Sodium phosphate Calcium phosphate Calcium oxide Sodium silicate Sodium phosphate Calcium phosphate Calcium oxide Sodium silicate ANSWER DOWNLOAD EXAMIANS APP
Chemistry The nucleus of an atom consists of All of these electrons and protons protons and neutrons electrons and neutrons All of these electrons and protons protons and neutrons electrons and neutrons ANSWER DOWNLOAD EXAMIANS APP
Chemistry A balloon filled with helium rises in air because The balloon is weightless Air exerts an upward force on the balloon Helium is less dense than air Helium pushes down on the air below the balloon The balloon is weightless Air exerts an upward force on the balloon Helium is less dense than air Helium pushes down on the air below the balloon ANSWER DOWNLOAD EXAMIANS APP
Chemistry What is a common name for the substance which irritates lachrymal glands ? Noble Gas Laughing Gas Anaesthetic Gas Tear Gas Noble Gas Laughing Gas Anaesthetic Gas Tear Gas ANSWER DOWNLOAD EXAMIANS APP
Chemistry All isotopes of the same element have ________ Different atomic numbers and different atomic mass The same atomic number and the atomic mass The same atomic number but different atomic masses Different atomic numbers and the same atomic mass Different atomic numbers and different atomic mass The same atomic number and the atomic mass The same atomic number but different atomic masses Different atomic numbers and the same atomic mass ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following is a major green house gas? Chloro fluorocarbon Freon Carbon monoxide Carbon dioxide Chloro fluorocarbon Freon Carbon monoxide Carbon dioxide ANSWER DOWNLOAD EXAMIANS APP
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