Ncert – class 10- science – Chapter 3 – Metals and Non-metals 2 Welcome to your Ncert - class 10- science - Chapter 3 – Metals and Non-metals 2 1. Match the substances given in Column A with their uses given in Column B. Column AColumn B(i) Gold(a) Thermometers(ii) Iron (b) Electric wire(iii) Aluminium(c) Wrapping food(iv) Carbon(d) Jewellery(v) Copper(e) Machinery(vi) Mercury(f) Fuel (i) - d, (ii) - e, (iii) - c, (iv) - f, (v) - b, (vi) - a (i) - c, (ii) - e, (iii) - a, (iv) - f, (v) - d, (vi) - b (i) - b, (ii) - d, (iii) - c, (iv) - e, (v) - a, (vi) - f (i) - d, (ii) - f, (iii) - c, (iv) - a, (v) - b, (vi) - e None 2. Generally metals react with acids to give salt and hydrogen gas. Which of the following acids does not give hydrogen gas on reacting with metals (except Mn and Mg)? HCl HNO3 H2SO4 All of these None 3. The ability of metals to be drawn into thin wire is known as Sonorousity Conductivity Ductility Malleability None 4. Which one of the following metals do not react with cold as well as hot water? Iron (Fe) Magnesium (Mg) Sodium (Na) Calcium (Ca) None 5. Which element is stored in water and which element is stored in kerosene? Magnesium and sodium respectively Sodium and phosphorus respectively Calcium and phosphorus respectively Phosphorus and sodium respectively None 6. An electrolytic cell consists of (i) Positively charged cathode (ii) Negatively charged anode (iii) Positively charged anode (iv) Negatively charged cathode (iii) and (iv) (i) and (ii) (i) and (iii) (ii) ad (iv) None 7. Which of the following is true? Aluminum is more reactive than Copper All the above Malachite is an ore of Copper Color of basic copper carbonate is green None 8. The property of metals by which they can be beaten in to thin sheets is called- Expansion Malleability Conduction Ductility None 9. Which statement is false? Non metals are Occur as solid or gas Non metals have low melting point Metals are Solid at room temperature except mercury Non metals are good conductors of heat and electricity None 10. What happens when calcium is treated with water? (i) It does not react with water (ii) It reacts violently with water (iii) It reacts less violently with water (iv) Bubbles of hydrogen gas formed stick to the surface of calcium (ii) and (iii) (iii) and (iv) (i) and (iv) (i) and (ii) None 11. Which of the following property is generally not shown by metals (except some metals)? Sonorous in nature Ductility Dullness Electrical conduction None 12. Which one of the following properties is not generally exhibited by ionic compounds? Electrical conductivity in molten state High melting and boiling points Solubility in water Electrical conductivity in solid state None 13. Which one of the following properties is not generally exhibited by ionic compounds? High melting and boiling points Electrical conductivity in solid state Electrical conductivity in molten state Solubility in water None 14. What are the main impurities present with bauxite ore? Silica, Calcium carbonate Silica, Iron oxide Sulphur, Iron oxide All of the above None 15. What happens when silicon reacts with oxygen? Silicon phosphate Silicon nitrate None of these Silicon dioxide None 16. What happens when dilute sulphuric acid is poured on a copper plate? Zinc sulphate formed Copper does not react sulphuric acid Copper chloride formed None 17. The following metals exist in their native state: Ne, He, Ar Fe, Ag, Au All of these Pt, Au, Ag None 18. Which of the following property is generally not shown by metals? Ductility Sonorous in nature Dullness Electrical conduction None 19. Aluminium is used for making cooking utensils. Which of the following properties of aluminium are responsible for the same? (i) Good thermal conductivity or good heat conduction (ii) Good conduction of electricity (iii) Ductility (iv) High melting point (i) and (iii) (ii) and (iii) (i) and (ii) (i) and (iv) None 20. Which of the following metals cannot be extracted using smelting Zn Al Fe Pb None Time's up Please Share This Share this content Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Leave a Reply Cancel replyCommentEnter your name or username to commentEnter your email address to commentEnter your website URL (optional) Save my name, email, and website in this browser for the next time I comment.
