Grouping on Basis of Lusturous
Grouping on Basis of Lusturous
Lustre : lustre is the shine of the material. All metals in pure state are shiny and said to posses lustre. This property of metals is widely used for making jewellery and other decorative articles. Example are gold, silver and bronze.
Example :
A metal spoon shines whereas a wooden spon does not shine so much. Silk cloth has a shine whereas wollen cloth does not. We say that meal has more lustre than wood and that silk has more lustre than wool. An iron rod may not appear lustrous but when you use the sand paper to remove the top layer of the metal than you will see the lustre.Some metals lose their lustre when exposed to air and moisture.
Which of the following are correct ? (a) Luster is the shine of the material. All metals in pure state are shiny and said to posses luster. (b) Luster property of metals is widely used for making jewellery and other decorative articles. | |||
| Right Option : C | |||
| View Explanation | |||
Which of the following does not belong to the group of shiny materials? | |||
| Right Option : D | |||
| View Explanation | |||
Which of the following are correct : (a) Lustre is the shine of the material. (b) Only luminous object are lustrous in nature. (c) All metals in pure state are shiny and said to posses lustre | |||
| Right Option : C | |||
| View Explanation | |||
Students / Parents Reviews [10]
One of the best institutes to develope a child interest in studies.Provides SST and English knowledge also unlike other institutes. Teachers are co operative and friendly online tests andPPT develope practical knowledge also.
Aman Kumar Shrivastava
10thI have spent a wonderful time in Abhyas academy. It has made my reasoning more apt, English more stronger and Maths an interesting subject for me. It has given me a habbit of self studying
Yatharthi Sharma
10thAbout Abhyas metholodology the teachers are very nice and hardworking toward students.The Centre Head Mrs Anu Sethi is also a brilliant teacher.Abhyas has taught me how to overcome problems and has always taken my doubts and suppoeted me.
Shreya Shrivastava
8thIt was a good experience with Abhyas Academy. I even faced problems in starting but slowly and steadily overcomed. Especially reasoning classes helped me a lot.
Cheshta
10thAbhyas is a complete education Institute. Here extreme care is taken by teacher with the help of regular exam. Extra classes also conducted by the institute, if the student is weak.
Om Umang
10thBeing a parent, I saw my daughter improvement in her studies by seeing a good result in all day to day compititive exam TMO, NSO, IEO etc and as well as studies. I have got a fruitful result from my daughter.
Prisha Gupta
8thMy experience was very good with Abhyas academy. I am studying here from 6th class and I am satisfied by its results in my life. I improved a lot here ahead of school syllabus.
Ayan Ghosh
8thMy experience with Abhyas academy is very good. I did not think that my every subject coming here will be so strong. The main thing is that the online tests had made me learn here more things.
Hiya Gupta
8thAbhyas Methodology is very good. It is based on according to student and each child manages accordingly to its properly. Methodology has improved the abilities of students to shine them in future.
Manish Kumar
10thA marvelous experience with Abhyas. I am glad to share that my ward has achieved more than enough at the Ambala ABHYAS centre. Years have passed on and more and more he has gained. May the centre flourish and develop day by day by the grace of God.
