16/12/2019Atoms, Compounds and Mixtures (STUDY BY TOPICS JUNIOR CLASS) 0Comments by Gate Academy Welcome to your Atoms, Compounds and Mixtures (STUDY BY TOPICS JUNIOR CLASS) NAME EMAIL PHONE NUMBER 1. Which of the following pairs of properties is correct for the proton?Its got a charge of -1 and normally found inside the nucleus of an atom.Its got no charge and normally found inside the nucleus.Its got a charge of +1 and normally found inside the nucleus.Its got a charge of +1 and normally found outside the nucleus.2. The amount of a substance that can exist separately is called moleculeentityatomformulae3. Uniform mixtures are called terogeneoussolutionsheterogeneoushomogeneous4. Who founded the atomic theory Blaise PascalRoger WilliamsMicheal FaradayJohn Dalton5. Which one of the following is the electronic configuration for a group VII (7) element?2,42,8,72,57,26. "Sub-atomic particle" is the name given tothe tiny particles found outside the nucleus.the tiny particles found inside an atom.particles found in a nuclear submarine.the tiny particles found inside the nucleus.7. Which one of the following elements is used in party balloons?NitrogenNeonHeliumOxygen8. How many protons are there in an atom of sodium which has an atomic number of 11 and a mass number of 23?233411129. Which one of the following substances is a compound?IronHydrogenSodium fluorideOxygen10. Which particles are to be found in the nucleus of an atom?Neutrons and protons.Electrons and neutrons.Protons, neutrons and electrons. ? ? ?Neutrons only.11. The following are products of fractional distillation of crude oil exceptbitumenkerosenenaphtaoctane12. Which one of the following represents the compound called carbon dioxide?COCCO2H2O13. The chemical symbol of potassium is KMPD14. The chemical symbol of silver isAuAgAdAl15. Which component of atom is negatively chargedprotonelectronneutronisotron16. The smallest part of a compound which still has the properties of that compound is calleda solida mixturean atoma molecule17. Which of the following sets of substances represents mixtures only?Air, blood and sodium chlorideGold, carbon and airOrange juice, sodium and hydrogenBrass, seawater and air18. The chemical symbol for oxygen isYOXN19. The chemical symbol "Ca" represents which of the following elements?CalciumCopperSulfurCarbon20. The period in which an element is located gives usthe number of electron shells that the electron has.the number of neutrons in that element.the electronic configuration of that element.the number of electrons in its outer shell.21 out of 20Time is Up!
