Types of students in online classU0001f971 | YOUR CLASS | Arisha Mam #shorts #ytshorts #funny video #funny

Try this. Make a list of students in your class using spectacles. Record the power of their lenses. Find out and note which type of defect of vision they suffer from. Which defect is most common among the students?

Piyush is a student of class 10. His teacher was teaching the type of chemical reactions in the class. Piyush was aksed to carry out the reaction of electrolysis of water in the laboratory. Piyush set up the complete apparatus for the electrolysis of water. He took pure water (distilled water) to carry out this reaction. When Piyush passed electric current through this water for a considerable time even then no chemical reaction took place. Piyush told this problem to his classmate Arjun. Arjun thought over the problem and asked Piyush to add a little of a certain substance into pure water before passing electric current through it. When electric current was passed thorugh water after adding a little of this substance then a chemical reaction took place to form two gases X and Y . The volume of gas X collected over one of the electrodes was 8mL whreas the volume of gas Y collected over the other electrode was 16mL (a) Why no chemical reaction took place when electric current was passed thorugh pure water? (b) What substance was added in little quantity to pure water before passing electric current again? (c) How did the addition of little of this substance help in the electrolysis of water? (d) What is gas X ? Over which electrode is it collected? (e) What is gas Y ? Over which electrode is it collected? (f) What type of chemical reaction is demonstrated by this experiment ? Why? (g) What values are displayed by Arjun in this episode?

Raghav is a student of class X who was trying to convert the groundnut oil into solid fat (vanaspati ghee). He took the oil inan appropriate flask having an arrangement for passing hydrogen gas into it. Raghav pased the hydrogen gas into oil and heated them together for a considerable time. On cooling the apparatus, Raghav found that even after heating them together for a considerable time. On cooling the apparatus, Raghav found that even after heating together oil and hydrogen for a considerable time, no solid fat was formed. Raghav shard this problem with his sister Divya who is studyging in class XI. She advised him ot add a certain finely divided substance while heating oil wih hydrogen gas. When Raghav repeated the experiment by adding this substance to oil and hydrogen mixture, then the liquid oil was converted into a solid fat.Divya advised Raghav not to consume the fat prepared by him in the laboratory. (a) What was he finely divided substance which Raghav was asked to add for converting oil into fat? What is its function? (b) What type of substance is (i) an oil, and (ii) a fat? (c) What is the special name of conversion of oils into fats used in Industry? (d) What are the two types of chemical reactions exemplified by the conversion of oils into fats? (e) Why did Divya ask Raghav not to consume the fat prepared by him in the laboratory? (f) What values are exhibited by Divya in this episode?