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