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1201.

Why is decomposition of vegetable considerd as exothermic reaction?

Answer» The decomposition of vegetable matter into compost in an exothermic reaction because microbes need energy to break the bond of vegetable that\'s why it produces heat energy hence this decomposition reaction is a exothermic reaction.
The decomposition of all that are biodegradable are decompose by microbes or bacteria .These all reaction bacteria or microbes help in break down of all biodegradable things.So,this is exothermic reaction
The decomposition of vegetable into compost is an example of exothermic reaction.The decomposition of vegetable matter into useful compost is carried out by microbes.These reactions involve break down of bonds.The overall reaction is exothermic.
1202.

difference between opening and closing stomatal event with proper points

Answer» Opening of stomata:\xa0Solutes from neighbouring epidermal and mesophyll cells enter the guard cells lowering its osmotic potential and water potential. This lowered water potential and osmotic potential will allow movement of water into guard cells from neighbouring cells. Guard cells become turgid due to water accumulation in them which results in the opening of the guard cells.\xa0Closing of stomata:\xa0As the somata open the solute concentration is reduced. This makes the water from the guard cells to move away into neighbouring cells. Now, guard cells becom flaccid with no water. They collapse against each other and result in the closing of stomata.\xa0
Each stoma is surrounded by two guard cells. The guards are of kidney shaped and contain chloroplasts. There is a respiratory chamber present in each stoma. The mechanism of the closing and opening of the stomata depends upon the presence of sugar and starch present in the guard cells. In the presence of light, the guard cells of the stomata contain sugar which is synthesized by their chloroplasts. The sugar is soluble and increases the concentration of guard cells. Due to higher concentration of the cytoplasm of guard cells, the water enters into these cells from the neighbouring cells by osmosis. Hence the stomata remains open.in the absence of light the sugar present in guard cells converts into the starch. The starch is insoluble, and this way the guard cells remains in lower concentration than the of neighbouring cells, and the neighbouring cells take out the water from the guard cells by osmosis making them flaccid and the stomata closed.
1203.

May I have the tables of chapter - 3rd which are given in revision notes of this app.....

Answer»
1204.

Metal exist in liquid state ...?

Answer» Only mercury exist in liquid state.
Mercury is the only metal which exists in liquid state at room temperature. .
Yes mercury is the metal which exist in liquid state in the room temperature
1205.

what are sperm and ovary

Answer» During reproduction male produce sperm thruogh ***** and speard the sperm of male into womens ****** ..Women also produces sperm ..Genrrally during suhagraat in night men and women do this process
Sperm:\xa0Testis primarily serves the function of sperm production. Sperms are the male gametes. Ovary:\xa0There are two ovaries; one near each fallopian tube. Ovary produces the eggs or the female gametes. All the eggs are produces by the ovary when the female child is still in the womb. One egg matures in each ovulation cycle and is released from the ovary. The egg is caught by the flimbriae and transferred to the fallopian tube.
1206.

What is sustainable development??

Answer» Thanks everyone ??
the development that we are doing without harming the or using the natural resources
It is a\xa0development\xa0that meets the needs of the present without compromising the ability of future generations to meet their own needs.
economic development that is conducted without depletion of natural resources
1207.

Difference between voltmeter and voltameter

Answer» Voltameter is\xa0an electrolytic cell and\xa0isused to carry out the process of electrolysis but\xa0voltmeter is\xa0an instrument used for measuring the potential\xa0difference\xa0across two pointsin a\xa0circuit . It\xa0is\xa0always connected in parallel across the desired points i8n an electrical circuit.
1208.

How citizenship rules made in Estonia affected people belonging to Russian minority?

Answer» In January 2017, the United States deployed Special Forces to Estonia as part of an ongoing presence of U.S. and other North Atlantic Treaty Organization (NATO) troops aimed at ensuring security in the Baltic region. Following the Russian annexation of Crimea in 2014, separatist conflicts in eastern Ukraine, an increase in Russian military activities in the Baltic Sea region, and ongoing allegations of Russian meddling in elections in Europe and the United States, tensions between Russia and its neighbors have attracted growing international attention. In recent years, the United States has increased its investment and interest in Estonia, working to shield the tiny country and its 1.3 million residents from potential Russian incursions.Estonia’s emergence as a key player in this context is unique and multidimensional, in part due to its large Russian-speaking population and citizenship policy. The first of the former Soviet republics to enter membership talks with the European Union, Estonia has been an EU and NATO member since 2004. Following independence in 1991, Estonia sought to restore the country to its pre-Soviet identity by reverting to its earlier citizenship policy, viewing the Soviet era as a period of illegal occupation. This policy rollback had a significant effect on Russian speakers, a multiethnic linguistic community that comprises 30 percent of the country’s population and is chiefly made up of Soviet-era migrants and their descendants. Russian speakers are often defined as muulased (non-Estonians, aliens, or foreigners), a term also used in a derogatory sense by some Estonians. Most were not entitled to Estonian citizenship following independence, and while the majority has acquired some form of legal residency, a number remain stateless (officially classified as having undetermined or undefined citizenship by the Estonian state and census), causing divisions within the country and with its much larger neighbor.While Estonia earns praise and criticism alike for its citizenship policy at home, militarization and tensions continue to wax and wane between the United States, Estonia, NATO, and Russia. In light of recent geopolitical developments, scholars, policy experts, and journalists are increasing their interest in and coverage of Estonia, often with a keen emphasis on Estonia’s citizenship policy and Russian-speaking population. Building upon recent research, including mixed-methods fieldwork by the author, this article examines Estonia’s citizenship policy, its impacts on Russian-speaking residents, and implications for ongoing regional events.
1209.

what is the difference between efflorescence and hydroscopic and deliquescent

Answer» Hygroscopic and deliquescent materials are both able to absorb moisture from the air. However, hygroscopy and deliquescence don\'t mean precisely the same thing: Hygroscopic materials absorb moisture, while deliquescent materials absorb moisture to the extent that the substance dissolves in water.
\xa0Deliquescent substances\xa0-\xa0certain solid substances, when exposed to air absorb water, enough to form solutions. Example, solid NaOH, CaCl2, CaCl2. 6H2O, P4O10\xa0(forms HPO3), FeCl3, KOH, MgCl2.\xa0Hygroscopic Substances -\xa0substances absorb water from air, but not enough to form solutions. Examples of such substances include CaO, NaNO3, NaCl, Sucrose and CuO. Also, certain liquid substances absorb water from the air to get diluted - these are also regarded as being hygroscopic. Example, conc. H2SO4\xa0and conc. HCl.\xa0lf a hydroscopic substance absorbs so much moisture that an aqueous solution is formed, the substance becomes deliquescent.
1210.

How much 1gm of uranium produce energy

Answer» The fission of 1 g of uranium or plutonium per day liberates about 1 MW. This is the energy equivalent of 3 tons of coal or about 600 gallons of fuel oil per day, which when burned produces approximately 1/4 tonne of carbon dioxide.
1211.

Difference between Focus and principle Focus

Answer» Principal focus is a point on the principal axis where the rays which are incident parallel to the principal axis meet after reflection.\xa0Principal focus is a point on focal plane and is located on the principal axis.Focus is a point where rays parallel to each other meet. It is not necessary for the rays to be parallel to the principal axis.These are infinite foci, all lying in a plane called focal plane.
Very good question u put up
https://youtu.be/1xKSSckSA0Q
1212.

What are inorganic material

Answer» Inorganic materials\xa0are generally derived from non-living sources, such as rocks or minerals.\xa0
https://youtu.be/1xKSSckSA0Q
1213.

Physical change

Answer» They are:1. Temporary changes 2. Reversible 3. New substance is not formed 4. Only shape, size, state etc changes
https://youtu.be/1xKSSckSA0Q
In physical change there is no formed New substance
Physical change are Temperary change. No new substance are form.
1214.

Sir ch 1 me corrosion or rancidity delete ho gya hai kya

Answer» https://youtu.be/1xKSSckSA0Q
Yes
Noooooo
Yes
Noo
1215.

How 1 columb 6 into 10 with power of 18

Answer» Hii
https://youtu.be/1xKSSckSA0Q
1coulomb=1.6×10^-19
1216.

How do amoeba obtaine its food

Answer» https://youtu.be/1xKSSckSA0Q
Amoeba obtain its food by the process of PHAGOCYTOSIS
Amoeba takes in food using temporary finger-like extensions of the cell surface which fuse over the food particle forming a food-vacuole. Inside the food vacuole, complex substances are broken down into simpler ones which then diffuse into the cytoplasm. The remaining undigested material is moved to the surface of the cell and thrown out.\xa0The complete phagocytosis process includes intake, digestion , absorption, assimilation, and egestion process.
1217.

Difference between reflection and

Answer» Tq??
\tReflectionRefractionThis phenomenon usually occurs in mirrors.This phenomenon usually occurs in Lenses.Reflection can simply be defined as the reflection of light when it strikes the medium on a plane.Refraction can be defined as the process of shift of light when it passes through a medium leading to the bending of light.The light entering the medium returns back in the same direction.The light entering the medium travels from one medium to another.Considering the light waves, they bounce from the plane and change direction.The light waves pass through the surface while simultaneously change from medium to medium.The angle of incidence of the light is equal to the angle of reflection.The angle of incidence is not equal to the angle of reflection.\t
The phenomenon of bouncing back of light rays, to that particular medium itself on experiencing a different medium is known as reflection. As against the bending of the light ray to a different medium on striking the boundary of a different surface is termed as refraction.
Refraction
1218.

Why you didn\'t delete the topic which are being deleted by CBSE

Answer» https://youtu.be/1xKSSckSA0Q
may be it is becz the syllabus is reduce for this year only ..
1219.

What changes can you make in your daily habit to become environment friendly?

Answer» The changes we can make in our habits to become more environment friendly are:i. Segregate waste into recyclable and non-recyclable parts.ii. Switch off fans and lights when not required.iii. Use air conditioners, geysers and other appliances efficiently.iv. Walk to nearby shops instead of using vehicles. v. Reuse paper, plastic and glass bottles.vi. Recycle plastic, paper, glass and metal.
1220.

why composition reaction is opposite of Decomposition reaction?

Answer» A decomposition reaction is breakdown or separation of a chemical compound into its elements or simpler compounds while in composition reactions two or more elements or compounds combine to form a single compound that is why decomposition reactions called the opposite of combination reactions.Decomposition ReactionCaCO3\u200b→CaO+CO2\u200bNH4\u200bOH→NH3\u200b+H2\u200bOCombination ReactionN2\u200b+3H2\u200b→2NH3\u200bCaO+H2\u200bO→Ca(OH)2\u200b
1221.

Kyu is name mai koi kharabi hai

Answer» If yes So K.V no.1 ajmer
You mean school????
Hlw..
1222.

Rewari ka best school kinsa hai?Uski qualities kya hai?Aapko vo accha kyun lga?

Answer» I am in vivekanand school near rewari.Its also so goid on study
Hnji m Rewari se hoon
I want to know which is the best school of Rewari ?
AAP Rewari se ho
Sorry not getting ur question
1223.

Bandar kya jane adrak ka suad finally bandar got his bandariya aaj. Haa????.

Answer» Very funny??
Kise bol rhe ho vanshika aap
1224.

Haaa????Gjb interesting very interesting.

Answer» ????.
Byyyy.
Hii
Kya?
What. ?
1225.

Have you all downloaded "myCBSEguide.com" app?

Answer» Maine download kiya hai bakiyo ka pta nhi
Yes
1226.

Ek Insan apni Puri Life Mein Kitna khana kha leta hai

Answer» Jitna vo khane ke baad nikal deta he
Don\'t know
Don\'t know.
Kyun aap ek saath puri life ka khana khridoge kya?
Pta nhi
1227.

pH value of our body is .......

Answer» hii simran!
7.35 to 7.40
pH value of our body is from 7 to 7.8
7.35-7.40
Human life requires a tightly controlled pH level in the serum of about 7.4 (a slightly alkaline range of 7.35 to 7.45) to survive
1228.

Give reason why carbon dioxide turns lime water milky

Answer» When\xa0CO2\u200b\xa0passes through lime water, it turns into milky lime water due to formation of insoluble calcium carbonate.\xa0Ca(OH)2\u200b+CO2\u200b⇌CaCO3\u200b(+)+H2\u200bOIOf\xa0CO2\u200b\xa0is passed for longer period, turbidity disappears due to form of soluble calcium bicarbonate.CaCO3\u200b+H2\u200bO+CO2\u200b⇌Ca(HCO3\u200b)2\u200b\xa0.
The reaction between limewater, which is a solution of calcium hydroxide, Ca(OH)2 , and carbon dioxide will result in the formation of an insoluble solid called calcium carbonate, CaCO3 . The solution will turn milky due to the fact that calcium carbonate is a white precipitate.
1229.

Meri 1 girlfriend uska nam he Anushka sharam???

Answer» Ok dear if u said these lines to Mr sachin...
So????
Okk sorry ?? bhai
Mene sachin ko kaha he
So what??
1230.

Hii sanket are you online ?

Answer» Kal baat kare kya 11:30 ko plz online rahna plz ??good night sanket??
Me to roj ati hu aap to aate hi nahi ho (aap 10th class me ki 10th complete ho gaii hai)
Tum kaha Chali jati ho ye batao phle
Kaha chale jate ho yaar app ??
Yaa tell me
1231.

Can anybody explain it to meCopper have two valency when to use cu^+ or cu^2+ ?

Answer» Hello! Generally, Cu is an element state where cu2+ is used in the reaction when it loose 2 electron which shows it\'s metallic character.
1232.

Which solution is more acidic : a solution of pH = 3 or a solution of pH =6.5?

Answer» Are u sure??
Solution of ph 3
Thanks
1233.

All the best to all bhaiya and Didi for tomorrow\'s result.You are going to rock

Answer» Thank you for your wishes shanaya
1234.

Hi kya yha pr himanshi tyagi ji hai

Answer» Hmm bolo
1235.

भुला देंगे तुम्हें भी जरा सब्र तो रखो.. तुम्हारी तरह बेवफा होने में थोड़ा वक्त तो लगेगा..??

Answer» Nice bro
1236.

Good evening to all my friends

Answer» ?
Hlo divya
Good evening
Good evening
1237.

ABB message mat kar na please I hat you ??

Answer» Kon
1238.

Vanshika 5pm ho chuke he

Answer» I know about your new GF. So don\'t pretending u don\'t know anything.
My parents said me that they wish i died on my birth u can\'t imagine what I face.
Sorry
Due to this problem i leave my house and today i leave on my grandma\'s house. So plz i am living but I don\'t want.
1239.

Hi gyus

Answer» Nhi
Tum insta par hai
Hi kkrh
Sorry hello
Bol
1240.

What is the advantage of olfactory indicator over normal indicator

Answer» Advantage of olfactory indicators over universal indicators is that olfactory indicators also helps us to guess the substance with their smell that whether it is acidic or basic.... but this property is not shared by universal indicated.... as they help us to judge only with change in color and not with smell
The advantage of the universal indicator is that it displays a variety of colors over the whole pH scale. This makes it possible to determine an approximate pH of a solution over a range from 1-14. whereas, A commonly used acid-base indicator is litmus.
1241.

What is OHM\'S law anyone know\'s

Answer» Ur wlc?
Oh tq so much ??
Ohm\'s law states that the voltage or potential difference between two points is directly proportional to the current or electricity passing through the resistance, and directly proportional to the resistance of the circuit. The formula for Ohm\'s law is V=IR.
1242.

Lavanya tum apna name kio change kr deti ho ?

Answer» Okk okk
Mera bhai bhi chlta hai esliye
1243.

Which book is good for class 10science cbse and maths also pls help me ??

Answer» Oswal
Bataya to hai ki NCERT best hai
Pls help me
Pls koi toh bta do
NCERT
1244.

Me tumahri sochh janana chata tha

Answer» I talk at 5 evening. Plz be online.
Ooooo ?
1245.

Lavanya u r my friend so don\'t be sorry for interfering. Ok

Answer» Abb javab nahi h6
Meri new girlfriend kon he
Matlab?
Abb javab di
Thanks ,but u really so lovely
1246.

What are aqua regia?

Answer» It is a mixture of three parts of concentration HCL and one part concentration of HNO3 .it is besy reagent to dissolve noble metals
Aqua regia,\xa0mixture\xa0of concentrated nitric and hydrochloric acids, usually one part of the former to three parts of the latter by volume
1247.

Where does capillaries are found?

Answer» Hii Ankit I am back
Liver bro
1248.

Name the digestive system of grasshopper.

Answer» Digestive system in grasshopper include alimentary canal which is further divided into 3 parts :-1.) fore gut2.)midget3.)hindsight
1249.

What is *** and condom

Answer» Abe oo
It\'s a Mechanical Barrier
1250.

Me nahi gaya ho vanshika???

Answer» How lovely u both r,sorry to interfere in your matter but u both r really caring and loving each other??
Vo to maine byy tata isliye kha bcoz Mai kud ko aur aapko dikha chahti ti that i don\'t care about you.
And i want to cry and i miss you.
I was feeling so sad.
Ok now I am relax.