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. The ability of metals to be drawn into thin wire is known as Sonorousity Ductility Conductivity Malleability None 2. What happens when dilute sulphuric acid is poured on a copper plate? Zinc sulphate formed Copper chloride formed Copper does not react sulphuric acid None 3. Which one of the following metals do not react with cold as well as hot water? Calcium (Ca) Iron (Fe) Sodium (Na) Magnesium (Mg) None 4. What are the main impurities present with bauxite ore? Silica, Iron oxide Silica, Calcium carbonate Sulphur, Iron oxide All of the above None 5. Which statement is false? Non metals have low melting point Non metals are good conductors of heat and electricity Metals are Solid at room temperature except mercury Non metals are Occur as solid or gas None 6. 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 (i) and (iv) (ii) and (iii) (iii) and (iv) (i) and (ii) None 7. Which element is stored in water and which element is stored in kerosene? Calcium and phosphorus respectively Sodium and phosphorus respectively Phosphorus and sodium respectively Magnesium and sodium respectively None 8. Which of the following metals cannot be extracted using smelting Al Zn Fe Pb None 9. Which of the following property is generally not shown by metals? Electrical conduction Ductility Sonorous in nature Dullness None 10. 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) - f, (iii) - c, (iv) - a, (v) - b, (vi) - e (i) - c, (ii) - e, (iii) - a, (iv) - f, (v) - d, (vi) - b (i) - d, (ii) - e, (iii) - c, (iv) - f, (v) - b, (vi) - a (i) - b, (ii) - d, (iii) - c, (iv) - e, (v) - a, (vi) - f None 11. Which of the following is true? All the above Malachite is an ore of Copper Color of basic copper carbonate is green Aluminum is more reactive than Copper None 12. 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 (ii) and (iii) (i) and (iii) (i) and (iv) (i) and (ii) None 13. The property of metals by which they can be beaten in to thin sheets is called- Expansion Malleability Ductility Conduction None 14. An electrolytic cell consists of (i) Positively charged cathode (ii) Negatively charged anode (iii) Positively charged anode (iv) Negatively charged cathode (i) and (iii) (iii) and (iv) (i) and (ii) (ii) ad (iv) None 15. 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)? All of these HNO3 HCl H2SO4 None 16. Which one of the following properties is not generally exhibited by ionic compounds? Electrical conductivity in solid state Solubility in water Electrical conductivity in molten state High melting and boiling points None 17. Which one of the following properties is not generally exhibited by ionic compounds? High melting and boiling points Solubility in water Electrical conductivity in solid state Electrical conductivity in molten state None 18. The following metals exist in their native state: Ne, He, Ar Pt, Au, Ag Fe, Ag, Au All of these None 19. Which of the following property is generally not shown by metals (except some metals)? Electrical conduction Sonorous in nature Dullness Ductility None 20. What happens when silicon reacts with oxygen? None of these Silicon dioxide Silicon phosphate Silicon nitrate 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.
