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questinon 72: Nitric acid is a corrosive chemical describes a chemical property, as it refers to nitric acid's ability to react and cause chemical change, such as corroding materials.

Ere 47 , 2 nw mihonw

Part 2

37 is A,not D (A) The speed of an electromagnetic radiation is the product of its wavelength and frequency,so as the frequency increase,so do the speed.so it's right (D) The speed of electromagnetic wave have different speed in different mediums.(i.e it doesn't have the same speed in air and water).it is the frequency that doesn't depend on the nature of the medium.

ለናቹራል😭😭😭😭

Where is part 2?

Q20 isn't correct

Thanks I score😅56

Were is 66

26 tiyaqe peroxide k2o2.ayhonm?

Thank you teacher pls part 2

6:01

Please next part

Teacher if you want you can check it on Physics G-10,U-6 old curriculum we know light is one of EMR as light travels from one medium to another there is refraction of light and this leads to change in speed of light. According to Snell's law SinQ1/SinQ2=n2/n1=V1/V2.So "A" is the correct answer🙏

68 "C" is the correct answer bcz there is no preferential discharge in molten electrolytes bcz we have only one cation and anion so they will migrate to their respective electrodes and got discharged.

Teacher መቼ ይጀምራል ዝም አልከን እኮ pls pls መልስልኝ የሚጀምር ከሆነም ቀኑን ይንገሩን በተስፋ እንጠብቅ ???please please❤❤

Enamesgnewalen

Q3 yibraraln 🙏

#Q3 error

Ere 72 eko mnm ayakerakrm melsu B nw Corrosive this is chemical property

pls part 2

Please explain question no 8, when we use -ve sign?

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Teacher on question 37, the emr speed of light is constant this is because for example from gamma ray to radio wave the wavelength is increase and the frequency is decreases, so because of wavelength c is increase at the same time because of frequency it decrease, so it doesn't change . But the speed of light is change it travels from one medium to another medium. This is because the refractive index of the material. For example light travels from air to water it's speed decrease , because water has high refractive index , and because of this it's wavelength decrease and also it's speed. And teacher you can't see that speed of light is directly proportional to both wavelength and frequency . C=wavelength x frequency and text book also indicated that the speed of emr is depend on the medium which it travel through . On question 72, the corrosiveness of the nitric acid is because of it's strong oxidizing agent. So it is definetly chemical property. So the correct answer is the nitric acid has pungent smell. And also teacher you can't stand to opposite side of the text book , because the question is asked based on the text book.

SPeed of light is constant in vacuum but not in medium

Q26.booklet code 196 lay choice CaO new yemilew I think ye hitmet chigir alew.

37 absolutely D without question.

Very by goodness

i got 85 out of 100 🥵

teacher ante tikikil neh 37 D new gn 72 i am sure B new mihonew lemangnaw tnx

The speed of electromagnetic wave depends on the nature of the medium which the wave is traveling

EMR propagate lemehon medium ayfeligim new enji at vacuum bihon noro awo lik new speedu constant new neger gin lela bota kehone yilewetal. Ante eko eyalk yalehew Mr. Speed minim bifeter ena yetim bihon endemaylewet new

Question No-43 D is correct answer, octahedral. Wushet yimaslal gin ewunat neow!

Lela s7b

Q42/A

thank you teacher

Check on grade 11 unit 2 phage 60

Amzing you are best chemstry teacher thank you

72 b is the correct choice - B. Nitric acid has a pungent smell. (This describes a physical property, as it relates to the senses.) - C. Nitric acid is a corrosive chemical. (This describes a chemical property, as it relates to its ability to react with other materials.)

When you start

Teacher,question 25 and 39 correct answer is A

Sorry teacher question 37 is not D its A right because speed is dependent on medium refer grade 11 old curriculum textbook!

Zendro remidan ynoral end

Speed: Electromagnetic radiation always travels at the same speed in a vacuum, which is the speed of light, approximately 299,792,458 meters per second (m/s). However, in other materials, such as air or water, the speed of electromagnetic radiation can be slower.

is speed or frequency constant? and if the speed is constant why n is needed in refraction?

Brother speed of light constant yemihonew iko in vacuum new