METAL AND NON METAL 2

Q1) Which of the following oxides of iron would be obtained on the prolonged reaction of iron with steam?

• a) FeOb) Fe₂O₃

• b) Fe₂O₃

• c) Fe₃O₄

• d) Fe₂O₃ and Fe₃O₄

Q2) A non-metal used to preserve food material is:

• a) Carbon

• b) Phosphorus

• c) Sulphur

• d) Nitrogen

Q3) The arrangement for Copper, Tin, Lead and Mercury, according to the reactivity series, is:

• a) Tin> Lead> Copper> Mercury

• b) Lead> Copper> Mercury> Tin

• c) Copper> Mercury> Tin> Lead

• d) Mercury> Tin> Lead> Copper

Q4) The metals that float when treated with water are:

• a) Manganese and sodium

• b) Sodium and calcium

• c) Magnesium and sodium

• d) Magnesium and calcium

Q5) Aluminium is used for making cooking utensils. Which of the following properties of aluminium are responsible for the same?

• (i) Good thermal conductivity

• (ii) Good electrical conductivity

• (iii) Ductility

• (iv) High melting point

Q6) When hydrochloric acid is added to barium hydroxide, a white-coloured compound is formed. Which of the following option gives the complete chemical reaction?

• a) HCl + Ba(OH)₂ → BaCl₂ + 2H2O

• b) 2HCl + Ba(OH)₂ → BaCl₂ + 2H2O

• c) 2HCl + Ba(OH)₂ → BaH₂ + 2HCl + O₂

• d) HCl + 2Ba(OH) → 2BaCl₂ + 2H2O + O₂

Q7) What happens when a pellet of sodium is dropped in water?

• (a) It catches fire and forms oxide

• (b) It absorbs heat and forms oxide

• (c) It catches fire and forms hydroxide

• (d) It absorbs heat and forms hydroxide

  
  

Q8) The chemical reaction between a piece of copper and nitric acid is given by the chemical equations,Cu + HNO₃ → Cu(NO₃)₂ + H₂

H₂ + HNO₃ → H₂O + NO₂

What can be inferred from the chemical equation?

• a) Copper causes the oxidation of HNO₃ to form NO₂

• b) Hydrogen gas gets oxidised by HNO₃ to form water

• c) Gas reacts with oxygen in the air to form water

• d) Nitrate reacts with hydrogen to form NO₂ and H₂O

Q9) Which of the following options gives the process of extraction of mercury from its ore cinnabar?

• (a) Cooling cinnabar in the presence of excess air

• (b) Cooling cinnabar to convert it into mercuric oxide and then heating it

• (c) Cinnabar to convert it into mercuric oxide and then heating it again

• (d) Cinnabar in the presence of limited air, and then adding a small amount of water

Q10) The image shows the electrolytic refining of copper.

Which of the following options explains the process of obtaining pure copper?

• (a) When current is passed, pure copper from the anode deposits to the cathode.

  
  

• (b) When current is passed, pure copper from the anode deposits in the electrolytic solution.

• (c) When current is passed, pure copper from the electrolytic solution deposits at the anode.

• (d) When current is passed, pure copper from the electrolytic solution deposits at the cathode.