Match the following S. No. Metals Uses Correct match 1 Gold Atomic energy 2 Titanium Car batteries 3 Zirconium Thermometers 4 Lead Jewellery 5 Mercury Bullet proof alloy steels

Gold is a very lustrous metal and is very costly. This is found in the nature in free state or native state. This metal is non-corrosive and have distinctive colour. Its pure form is soft and hence copper metal is often added in it, to increase the strength and hardness. Titanium has a low density and is a strong, lustrous, corrosion-resistant (including seawater, aqua regia and chlorine) transition metal with a silver colour. Titanium can be alloyed with iron, aluminium, vanadium, molybdenum, among other elements, to produce strong lightweight alloys for aerospace (jet engines, missiles, and spacecraft), bullet proof alloy steels, military and industrial process. The most important use of zirconium is in nuclear reactors for cladding fuel rods, for alloying with uranium, and for reactor-core structures because of its unique combination of properties. Zirconium has good strength at elevated temperatures, resists corrosion from the rapidly circulating coolants, does not form highly radioactive isotopes, and withstands mechanical damage from neutron bombardment. The principal consumption of Lead is for the Lead-Acid storage battery in which grid or plate is made of Lead or Lead with other metal more commonly with antimony. The acid used in such batteries is Sulphuric acid. Mercury is the only metal which is present in the liquid state at room temperature. And hence is used in Thermometers. S. No. Metals Correct match 1 Gold Jewellery 2 Titanium Bullet proof alloy steels 3 Zirconium Atomic energy 4 Lead Car batteries 5 Mercury Thermometers

Match the following: S. No. Metals/Non metals Uses Correct match 1 Liquid hydrogen Electrodes 2 Carbon Fungicide 3 Sulphur Fertilizers 4 Nitrogen Rocket fuel

S. No. Metals/Non metals Uses 1 Liquid hydrogen Rocket fuel Liquid hydrogen produces high energy on combustion and hence is used as Rocket fuel. Also, it is less polluting that the other fuels. S. No. Metals/Non metals Uses 2 Carbon Electrodes Graphite is the allotrope of carbon that conducts electricity. And hence, its is used as electrode in electrochemical cells. S. No. Metals/Non metals Uses 3 Sulphur Fungicide Most of the fungicides contain sulphur. These fungicides are biochemical compounds used to kill parasitic fungi or their spores. Sulphur may react with plant or fungi to produce toxic agent. S. No. Metals/Non metals Uses 4 Nitrogen Fertilizers Nitrogen is present in all crops and plays an important role in plant metabolism. It is also essential for the formation amino acids, some vitamins and enzymes. Most of the fertilizers contain nitrogen.