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Q 1. The total number of ions produced by one molecule of CaCl2 is
3 ions
4 ions
5 ions
6 ions
Q 2. Which one of the following statements does not hold true for magnesium chloride?
Magnesium atom loses one electron and forms magnesium cation.
Chlorine atom gains one electron each and it forms chloride ion.
Magnesium atom loses two electrons and form magnesium cation.
Magnesium chloride is an ionic compound.
Q 3. The purity of pure gold in carat is
22 carat
23 carat
24 carat
21 carat
Q 4. The correct electronic configuration for sodium ion is
2, 8, 1
2, 8
2, 8, 7
2, 8, 8, 1
Q 5. Which of the following metal is always a constituent of an amalgam?
Iron
Copper
Mercury
Zinc
Q 6. Which metal has very low melting point?
Gallium
Copper
Tungsten
Gold
Q 7. What is the black substance formed when copper is heated in air?
Copper nitride
Copper sulphide
Copper carbonate
Copper oxide
Q 8. The metals that produce sound on striking a hard surface are said to be
Ductile
Malleable
Lustours
Sonorous
Q 9. Which one of these metals can be extracted from its molten ore only through electrolysis?
Gold
Silver
Potassium
Lead
Q 10. Which process is used to reduce aluminium oxide to aluminium?
Thermit process
Electrolytic reduction
Roasting
Hydraulic washing
Q 11. Why has the iron Pillar at Qutab minar in Delhi not rusted when iron corrodes so easily? This is likely because of the formation of a thin film of
Magnetic oxide
Copper oxide
Steel
Aluminium oxide
Q 12. Identify the colour of deposit formed on the surface of copper when it is exposed to moist air.
Black
Red
Green
White
Q 13. Which of the following will not conduct electricity?
Molten NaCl
NaCl dissolved in water
Solid NaCl
Both molten and solid NaCl
Q 14. Solder is an alloy of:
Lead and tin
Copper and tin
Copper and zinc
Iron and copper
Q 15. Metals can be obtained from metal oxide by
Oxidation
Dissociation
Disproportionation
Reduction
Q 16. A cleaned aluminium foil was placed in an aqueous solution of zinc sulphate. When the aluminium foil was taken out of the zinc sulphate solution after 15 minutes, its surface was found to be coated with a silvery grey deposit. From the above observation, it can be concluded that
Aluminium is more reactive than zinc.
Zinc is more reactive than aluminium.
Zinc and aluminium both are equally reactive.
Zinc and aluminium both are non-reactive.
Q 17. Which metal is kept immersed in kerosene?
Aluminium
Copper
Sodium
Magnesium
Q 18. Which of the following is an example of an amphoteric oxide?
Sodium oxide
Sulphur dioxide
Zinc oxide
Carbon monoxide
Q 19. Among the following metals, the metal that can displace zinc from zinc sulphate solution is
Lead
Copper
Magnesium
Silver
Q 20. Which of the following alloy is used for welding?
Solder
Brass
Bronze
Steel
Q 21. An electrolytic cell consists of(I) Positively charged cathode(II) Negatively charged anode(III) Positively charged anode(IV) Negatively charged cathode
(I) and (II)
(III) and (IV)
(I) and (III)
(II) and (IV)
Q 22. Galvanisation is a method of protecting
Steel and iron
Copper and zinc
Gold and silver
Silver and iron
Q 23. The non-metal that is liquid at room temperature is
Hydrogen
Chlorine
Bromine
Iodine
Q 24. Among the following, ionic compound is formed between
C and H
N and H
Mg and Cl
C and O
Q 25. Ionic compounds are soluble in water but insoluble in kerosene because
Water is polar and kerosene is non polar.
Kerosene is polar and water is non polar.
Kerosene is lighter than water.
Electrostatic or ionic forces are weak.
Q 26. Ionic bond involves
Complete transfer of electrons
Complete sharing of electrons
Partial transfer of electrons
Partial sharing of electrons
Q 27. Anodising is done in case of
Aluminium
Copper
Sodium
Iron
Q 28. Zinc oxide is reduced to metallic zinc by
Heating alone
Heating with Oxygen
Hating with sulphur
Heating with carbon
Q 29. Silver articles become black when exposed to air due to formation of
Silver nitride
Silver nitrate
Silver sulphide
Silver hydroxide
Q 30. Which is the most abundant non-metal on the earth?
Silicon
Oxygen
Sulphur
Phosphorus
Q 31. The electronic configuration of Phosphorus (atomic number 15) will be
2, 8, 5
2, 8, 6
2 , 8 , 4
2 , 8 , 7
Q 32. The best conductor of electricity among the following is
Au (Gold)
Ag (Silver)
Hg (Mercury)
Al (Aluminum)
Q 33. Which of the following metal shows useful corrosion?
Silver
Copper
Aluminium
Iron
Q 34. A metal 'A' reacts with dilute HCl to give metal salt and a gas 'B'. Identify gas  'B'.
  • O2
  • H2
  • Cl2
  • N2
Q 35. Which of the following does not corrode?
Stainless steel
Iron
Silver
Copper
Q 36. An alloy of iron, chromium and nickel is
Bronze
Brass
Stainless steel
Solder
Q 37. Which allotrope of carbon conducts electricity?
Graphite
Diamond
Fullerene
Both Graphite and Diamond
Q 38.  Mostly oxides of non-metals are
Acidic
Basic
Amphoteric
Alkaline
Q 39. All metals exist as solid at room temperature except the metal 'X'. Name the metal "X'.
Gold
Tungsten
Mercury
Potassium
Q 40. When dilute HCl reacts with Zinc metal, the gas liberated is?
Oxygen
Nitrogen
Chlorine
Hydrogen

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