Chemistry What particles move around the nucleus of an atom and are negatively charged? Neutrons Positrons Electrons Protons Neutrons Positrons Electrons Protons ANSWER DOWNLOAD EXAMIANS APP
Chemistry The mass of one Avogadro number of helium atom is 8.00 gram 1.00 gram 4 x 6.02 x 1023 gram 4.00 gram 8.00 gram 1.00 gram 4 x 6.02 x 1023 gram 4.00 gram ANSWER DOWNLOAD EXAMIANS APP
Chemistry What is a common name for the substance which irritates lachrymal glands ? Noble Gas Laughing Gas Tear Gas Anaesthetic Gas Noble Gas Laughing Gas Tear Gas Anaesthetic Gas ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following does the Nucleus of an atom consist of? Electrons Protons Protons and neutrons Protons and electrons Electrons Protons Protons and neutrons Protons and electrons ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following gases is most toxic ? Sulphur dioxide Carbon monoxide Chlorine Carbon dioxide Sulphur dioxide Carbon monoxide Chlorine Carbon dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following is most acidic MgO Na2O CaO Al22O3 MgO Na2O CaO Al22O3 ANSWER DOWNLOAD EXAMIANS APP
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