Which material is commonly used in the production of solar panels?*1 pointCopperAluminumSiliconIron

What material is used in some photovoltaic panels?AgoldBsiliconChydrogenDplatinum

_____________ is known for its strength and lightness. It is widely used in manufacturing of utensils, electrical goods, etc. *1 point(a) coal(b) Aluminium(c) copper(d) mica

Which of the following is used in the production of Plastic?*1 pointMercuryLeadVinyl chlorideNone of these

What are the four types of solar energy utilization?答案选项组Passive solarTidal powerActive solarWind energySolar thermal energy conversionPhotovoltaic cells

The term PVC used in the plastic industry stands forA) Polyvinyl chloride B) Polyvinyl carbonateC) Phosphors vanadium Chloride D) Polyvinyl carbocarbonate2- The material that can be deformed permanently by heat and pressure iscalled aA) Polymer B) ThermoplasticC) Chemical Compound D) Thermoset3- Valency of Hydroxide ion (OH) isA) -1 B) -2C) -3 D) 14- Atmosphere contains dust particles, salt grains, pollen grains, smoke,etc. which are collectively known as :A) Water vapour B) OzoneC) Aerosols D) CFC5- The Formula of Sodium Hydroxide isA) Na(OH)2 B) NaOHC) Na2(OH)3 D) Na2OH