Chemistry Metals Non-metals and alloys Test 3 Welcome to your Chemistry Metals Non-metals and alloys Test 3 Name Email 1.How many types of isotopes does Scandium have? (a) 7 (b) 13 (c) 10 (d) 9 None 2.Name the only metal that is antibacterial. (a) Sodium (b) Copper (c) Iron (d) Aluminium None 3.Which of the following is NOT a compound? (a) Sodium chloride (b) Carbon monoxide (c) Iron (d) Water None 4.Which of the following is NOT a noble gas? (a) Neon (b) Hydrogen (c) Helium (d) Argon None 5.Which mineral is also known as ‘fool’s gold’? (a) Quartz (b) Magnetite (c) Pyrite (d) Fluorite None 6.Which of the following metals in pure form has the highest melting point? (a) Tungsten (b) Copper (c) Platinum (d) Gold None 7. _______ gas gives an orange glow when electricity is passed through it. It is generally used in fluorescent lighting. (a)Nitrogen (b)Hydrogen (c)Neon (d)Oxygen None 8.Talonite is a combination of cobalt and _______. (a)chromium (b)zinc (c)copper (d)iron None 9.Which of the following is not used in the manufacturing of stainless steel? (a)Carbon (b)Sulphur (c)Nickel (d)Chromium None 10.Which metal was earlier called Wolfram ? (a)Tungsten (b)Molybdenum (c)Zinc (d)Radium None 11.Which of the following is a metal? (a)Sulphur (b)Iodine (c)Iron (d)Carbon None 12. What is the colour of copper sulphate ? (a) Colourless (b) Blue (c) Black (d) Red None 13.Arrange the following metals in the decreasing order of reactivity : (a)Iron > sodium > silver > gold (b)Sodium > silver > iron > gold (c)Gold > silver > iron > sodium (d)Sodium > iron > silver > gold None 14.What is the chemical symbol of Gold? (a)Mg (b)Hg (c)Ag (d)Au None 15.Which of the following elements found in water is responsible for cancer? (a) Arsenic (b) Iron (c)Chlorine (d)Fluorine None 16.Which of the following gases is used for anesthesia ? (a)Xenon (b)Argon (c)Neon (d)Helium None 17.Which of the following gases causes explosions in coal mines? (a)Carbon dioxide (b)Nitrogen (c)Butane (d)Methane None 18.. Brass is an alloy of : (a)zinc and iron (b)lead and copper (c)iron and lead (d)copper and zinc None 19.Which of the following elements/chemical compounds has the highest density? (a) Mercury (b) Osmium (c) Zinc (d) Nickel None 20.Which element is used to make the coils used in water heaters? (a) Copper (b) Nichrome (c) A mixture of aluminium and copper (d)A mixture of iron and steel None 21. Iron boils at about ____ degree Celius. (a)3182 (b)2181 (c)2861 (d)3861 None 22.At what temperature does iron melt? (a)1538°C (b)1683°C (c)1583°C (d)1638°C None Time's up
