A. Hydrogen B. Oxygen C. Carbon D. HeliumRead More »
. Which of the following particles move around the nucleus of an atom and are negatively charged____?
A. Protons B. Neutrons C. Electrons D. None of theseRead More »
Which of the following plays the central role in determining the chemical properties of atoms and molecules______?
A. Electrons B. Neutrons C. Protons D. All the aboveRead More »
A. In medicine, they are used as tracers for diagnostic purposes B. In industry, they are used to detect leak in water, oil and gas pipelines C. They are used to determine the age of rocks and fossils D. All of these statements are correctRead More »
Which of the following is droplet of water vapour suspended in the air and much close to the ground______?
A. Dew B. Color C. Composition D. volumeRead More »
A. Meiosis B. Cell division C. Replication D. MetabolismRead More »
A. Mixxed type of cells B. Different specialization cell C. Different type of cel D. Same type of cellRead More »
A. Soomatic B. Daughter C. ParentsRead More »
A. Ovary B. Stigma C. Anther D. Pollen grainRead More »
A. Community B. Habitats C. Population D. Abiotic environmentRead More »