Chemistry The percentage of oxygen in air is approximately 0.78 0.01 0.21 1 0.78 0.01 0.21 1 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following does the Nucleus of an atom consist of? Protons and electrons Protons and neutrons Protons Electrons Protons and electrons Protons and neutrons Protons Electrons ANSWER DOWNLOAD EXAMIANS APP
Chemistry The human body is made up of several chemical elements; the element present in the highest proportion (65%) in the body is carbon oxygen hydrogen nitrogen carbon oxygen hydrogen nitrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry Silicon is used in Solar energy devices All of these Semiconductors Transistors Solar energy devices All of these Semiconductors Transistors ANSWER DOWNLOAD EXAMIANS APP
Chemistry Higher concentration of nitrogen dioxide in atmosphere air causes Bronchitis Asphyxiation Corrosion Cancer Bronchitis Asphyxiation Corrosion Cancer ANSWER DOWNLOAD EXAMIANS APP
Chemistry The drug ‘Marijuana’ is a Mental stimulant Sedative Hallucinating substance Tranquillizer Mental stimulant Sedative Hallucinating substance Tranquillizer ANSWER DOWNLOAD EXAMIANS APP
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