1st semester question paper solved
 
Fill in the blanks:-  Bronze  is an alloy of copper and tin.  Chamois  leather is used for cleaning glass and silver polishing.  Squeegee  is used to remove excess water from floors.  Sweeping is done before Mopping  .  Brass  is an alloy of copper and zinc.  pH  denotes the acidity and alkalinity of substances.  Saponification  is a reaction in which fats/oils reacts with alkali to form soap.  Faucet  is another term for taps.  Baking soda   is used to polish brass.  Parquet is a Floor  finish.  Chemical name of washing soda is Sodium Carbonate .  Surfactant  is a surface active compounds that impart a good wetting power and suspending power to detergent.  A pink oxide of iron used as a fine abrasive for polishing silver is called Jeweler’s Rouge .  Aerosol  particles dispersed in gas packed under pressure with a device for releasing it as a fine spray.  Whirlpool baths are known as Bathtub  .  Chandelier  are decorative and delicate lamps used mainly in lobbies,banquet hall...
 
 
