sodium metal Vs Lemon? Experiment || @MR. INDIAN HACKER shorts #shorts #ytshorts #e_bull_jet #yt

Mr. Firoze is a retired man who lives in a big house. He has recently replaced all the filament-type bulbs in his house by CFls. His wife and children have a habit of keeping the lights and fans on (even when there is no one in the room) but Mr. Firoze keeps on going to every room periodically to switch them off. A few days back Mr. Firoze had purchased a device which can cook rice and dal without using any usual fuel. He has also installed an equipment on the roof of his house to obtain hot water. Mr. Firoze uses bicycle for short distances like going to nearby market, instead of scooter or car. (a) What is CFL ? Why has Mr. Firoze replaced all the filament-type bulbs in his big house by CFLs ? (b) Why does Mr.Firoze keep switching off lights and fans when no one is in the rooms ? (c) Name the device which Mr. Firoze has purchased to cook rice and dal without using any usual fuel ? (d) Name the equipment which Mr. Firoze has installed on the house-roof to obtain hot water ? (e) Why does Mr. Firoze use bicycle for going through short distances ? (f) What values are displayed by Mr. Firoze by all the above actions ?

One day Vabhav was performing experiments in the science laboratory based on the of chemical combination. Just then his chemistry teacher, Mr. Rajeev, came into the laboratory. Mr. Rajeev told Vaibhav that in an experiment conducted byby a class IX student when 10.6 g of sodium carbonate was reacted with 12.0g of ethanoic acid in a closed flask, then 16.4 g of sodium ethanoate, 4.4 g of carbon dioxide and an unknown mass of substances Y were produced. Mr. Rajeev asked Vaibhav to make use of this information and answer the following questions : (a) Write a word equation for the reaction which takes place on reacting sodium carbonate and ethanoic acid (b) Which is the substance Y which is produced in this reaction ? (c) What mass of substance Y is produced in this reaction ? (d) Which law of chemical combination has been made use of in calculating the mass of substance Y ? State this law (e) What values are displayed by Vaibhav in this eposide ?