This quiz works best with JavaScript enabled. Home > Science > Chemistry > Chemistry Basics > Chemistry – Quiz 33 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Chemistry Quiz 33 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. When bromine water is shaken with a liquid organic compound, it is rapidly decolourized. What can be determined from this test? A) The compound is an alcohol. B) The compound is an alkane. C) The compound is an alkene. D) The compound is an iodoalkane. Show Answer Correct Answer: C) The compound is an alkene. 2. ..... is everything around us. It takes up space and has mass. A) Atom. B) Chemistry. C) Matter. D) Molecules. Show Answer Correct Answer: C) Matter. 3. Biochemistry deals with A) Chemical changes in non living things. B) Physical and chemical changes in humans. C) Physical changes. D) I don't know. Show Answer Correct Answer: B) Physical and chemical changes in humans. 4. Among are the characteristics of Polycrystalline materials except ..... A) Crystallographic orientation varies from grain to grain. B) Composed of a collection of small crystals or grains. C) There exists an atomic mismatch within region of grains. D) Everything in the list are characteristics of Polycrystalline materials. Show Answer Correct Answer: D) Everything in the list are characteristics of Polycrystalline materials. 5. How many atoms is in this formula? Na2 CO3 A) 3. B) 4. C) 5. D) 6. Show Answer Correct Answer: D) 6. 6. What is the name of the compound N2O3? A) Sodium dioxide. B) Dinitrogen trioxide. C) Dinitrogen oxide. D) Nitrous oxide. Show Answer Correct Answer: B) Dinitrogen trioxide. 7. A form of matter that has a definite composition and distinct properties. A) Mixture. B) Element. C) Compound. D) Pure Substance. Show Answer Correct Answer: D) Pure Substance. 8. Wood + oxygen $\rightarrow$ carbon dioxide + water +energy ; what are the products A) Wood and oxygen. B) Carbon dioxide and water. C) Oxygen and energy. D) Wood and energy. Show Answer Correct Answer: B) Carbon dioxide and water. 9. A mixture in which substances are not evenly mixed A) Heterogeneous mixture. B) Physical change. C) Homogeneous mixture. D) Chemical change. Show Answer Correct Answer: A) Heterogeneous mixture. 10. Wood burning is an example of ..... A) Physical intensive property. B) Physical extensive property. C) Chemical change. D) Physical change. Show Answer Correct Answer: C) Chemical change. 11. If an atom contains 4 protons, 4 neutrons, and 4 electrons. What is its mass number? A) 4. B) 8. C) 2. D) 16. Show Answer Correct Answer: B) 8. 12. Substances composed of two or more elements chemically combined in a fixed proportion. A) Element. B) Compound. C) Vapor. D) Mixture. Show Answer Correct Answer: B) Compound. 13. What is the correct name of the compound Mg(NO3)2? A) Magnesium nitride. B) Magnesium dinitrate. C) Monomagnesium dinitrate. D) Magnesium nitrate. Show Answer Correct Answer: D) Magnesium nitrate. 14. Propene is converted to propanone in a two stage process.Propene $\rightarrow$ X $\rightarrow$ PropanoneWhat is the formula of compound X? A) CH3CHBrCH3. B) CH3CH2CH2Br. C) CH3CHOHCH3. D) CH3CH2CH2OH. Show Answer Correct Answer: C) CH3CHOHCH3. 15. What is the molar mass of sodium? A) 11. B) 22.990. C) 45.98. D) 3. Show Answer Correct Answer: B) 22.990. 16. The valency of Chlorine in AlCl3 is A) 1. B) 3. C) 2. D) None of above. Show Answer Correct Answer: A) 1. 17. An electrophile is a Lewis ..... A) Base. B) Acid. C) Radical. D) Anion. Show Answer Correct Answer: B) Acid. 18. Bases, like soap, are ..... A) Sour. B) Slippery. C) Non-electrical. D) Carbon. Show Answer Correct Answer: B) Slippery. 19. The activation energy needed for a chemical reaction is decreased by a A) Catalyst. B) Reactant. C) Product. D) Substrate. Show Answer Correct Answer: A) Catalyst. 20. What is the value of x $ Cl^{-1}X$ A) 0. B) 4. C) 100000000000000000000000000. D) 1. Show Answer Correct Answer: D) 1. ← PreviousNext →Related QuizzesChemistry QuizzesScience QuizzesChemistry Quiz 1Chemistry Quiz 2Chemistry Quiz 3Chemistry Quiz 4Chemistry Quiz 5Chemistry Quiz 6Chemistry Quiz 7Chemistry Quiz 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books