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