NCERTCOURSE.COM- Find here the NCERT/CBSE chapter-wise Multiple Choice Questions from Class 10 Science book Chapter 3 Metals and Non-metals with Answers Pdf free download. This may assist you to understand and check your knowledge about the chapters. Students also can take a free test of the Multiple Choice Questions of Metals and Non-metals. Each question has four options followed by the right answer. These MCQ Questions are selected supported by the newest exam pattern as announced by CBSE.
MCQ Questions for Class 10 Science with Answers Chemistry
Q1. Which one among the following is an acidic oxide?
(i) Na2O
(ii) CO
(iii) CO2
(iv) Al2O3
Answer: (iii)
Q2. 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)?
(i) H2SO4
(ii) HCl
(iii) HNO3
(iv) All of these
Answer: (iii)
Q3. Al2O3 + 2NaOH → …… + H2O
(i) Al(OH)3
(ii) Na2O
(iii) NaAlO2
(iv) AlNaO2
Answer: (iii)
Q4. In extraction of copper, the flux used is
(i) CaO
(ii) SiO2
(iii) FeO
(iv) FeSiO3
Answer: (ii)
Q5. The slag obtained during the extraction of copper pyrites is composed mainly of
(i) Cu2S
(ii) FeSiO3
(iii) CuSiO3
(iv) SiO2
Answer: (ii)
Q6. Which of the following oxide(s) of iron would be obtained on prolonged reaction of iron with steam?
(i) FeO
(ii) Fe2O3
(iii) Fe3O4
(iv) Fe2O3 and Fe2O4
Answer: (iii)
Q7. Which property of metals is used for making bells and strings of musical instruments like Sitar and Violin?
(i) Sonorousness
(ii) Malleability
(iii) Ductility
(iv) Conductivity
(i) Sonorousness
Q8. Which one of the following four metals would be displaced from the solution of its salts by other three metals?
(i) Mg
(ii) Ag
(iii) Zn
(iv) Cu
(ii) Ag
Q9. The poorest conductor of heat among metals is
(i) Lead
(ii) Mercury
(iii) Calcium
(iv) Sodium
(i) Lead
Q10. Galvanisation is a method of protecting iron from grudging by coating with a thin layer of
(i) Galium
(ii) Aluminium
(iii) Zinc
(iv) Silver
(iii) Zinc
Q11. Metal always found in free state is:
(i) Gold
(ii) Silver
(iii) Copper
(iv) Sodium
(i) Gold
Q12. The most abundant metal in the earth’s crust is
(i) Iron
(ii) Aluminium
(iii) Calcium
(iv) Sodium
(ii) Aluminium
Q13. Metal M occurs in the Earth’s crust as its oxide M2O3. An alloy of this metal is used in making aircrafts. The ore of the metal M is
(i) magnetite
(ii) haematite
(iii) bauxite
(iv) pyrolusite
(iii) bauxite
Q14. The highly reactive metals like Sodium, Potas-sium, Magnesium, etc. are extracted by the
(i) electrolysis of their molten chloride
(ii) electrolysis of their molten oxides
(iii) reduction by aluminium
(iv) reduction by carbon
(i) electrolysis of their molten chloride
Q15. The earthy impurities associated with mineral used in metallurgy are called
(i) Slag
(ii) Flux
(iii) Gangue
(iv) Ore
(iii) Gangue
Q16. The poorest conductor of heat among metals is
(i) Lead
(ii) Mercury
(iii) Calcium
(iv) Sodium
(i) Lead
Q17. Which of the following non-metal is lustrous?
(i) Sulphur
(ii) Oxygen
(iii) Nitrogen
(iv) Iodine
(iv) Iodine
Q18. An element A is soft and can be cut with a knife. This is very reactive to air and cannot be kept in open. It reacts vigorously with water. Identify the element from the following:
(i) Mg
(ii) Na
(iii) P
(iv) Ca
(ii) Na
Q19. The process in which a carbonate ore is heated strongly in the absence of air to convert it into metal oxide is called
(i) Roasting
(ii) Reduction
(iii) Calcination
(iv) Smelting
(iii) Calcination
Q20. The sulphide ore among the following is
(i) haematite
(ii) bauxite
(iii) argentite
(iv) zinc blende
(iv) zinc blende
Q21. Malachite is an are of:
(i) Iron
(ii) Copper
(iii) Mercury
(iv) Zinc
(ii) Copper
Q22. A basic lining is given to a furnace by using
(i) Calcined dolomite
(ii) Copper sulphate
(iii) Haematite
(iv) Silica
(i) Calcined dolomite
Q23. The atomic number of an element ‘X’ is 12. Which inert gas is nearest to X?
(i) He
(ii) Ar
(iii) Ne
(iv) Kr
(iii) Ne
Q24. Galvanisation is a method of protecting iron from rudftng by coating with a thin layer of
(i) Galium
(ii) Aluminium
(iii) Zinc
(iv) Silver
(iii) Zinc
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