CBSE > Class 10 > Science | CBSE Board | Homework Help

Singhania Sir Gamer 6 years ago

Sun appears red at the time of sun rise and sun set because at the time of sun rise and sun set sun are maximum distance from the earth and this distance are covered by red colour.

ANSWER

Mentioning the mode of reproduction used by - Planaria, Spirogyra,?

Posted by Honey... ??#Girl 6 years ago

CBSE > Class 10 > Science

7 answers

Shreyas Samarth ??? 6 years ago

Spirogyra by fragmentation, and planaria by regeneration

Rajat Dubey 6 years ago

Planaria use regeneration and spyrogyra use fragmentation

Priyanshu Yadav 6 years ago

Regenration

Honey... ??#Girl 6 years ago

Thanks yogita

Yogita Ingle 6 years ago

Planaria reproduces by regeneration. .

In Spirogyra, reproduction takes place by fragmentation that involves breaking down the filaments into smaller bits.

Honey... ??#Girl 6 years ago

And in Spirogyra is Fragmentation

Shivangi Verma 6 years ago

Regeneration

ANSWER

What is meant by affinity

Posted by Vishnu Prasad 6 years ago

CBSE > Class 10 > Science

2 answers

Param Eswari 6 years ago

To put it simply, affinity means a close relation

Yogita Ingle 6 years ago

The electron affinity is the potential energy change of the atom when an electron is added to a neutral gaseous atom to form a negative ion. So the more negative the electron affinity the more favorable the electron addition process is. Not all elements form stable negative ions in which case the electron affinity is zero or even positive.

ANSWER

How are Rainbows formed?

Posted by Romy Rajput 6 years ago

CBSE > Class 10 > Science

5 answers

Vikas Saini 6 years ago

It's process is Refaction →Reflection →Refraction. This reaction is in the water droplets?

Priyanshu Yadav 6 years ago

Due to refraction in the water drop so all liggt split into seven colours(vigyour)

Aman Kumar 6 years ago

A rainbow is a natural spectrum appearing in the sky after arain shower. It is caused by dispersion of sunlight by tiny water droplets, present in the atmosphere. A rainbow is always formed in a direction opposite to that of the sun. The water droplets act like small prism. They refract and disperse the incident sunlight, then refract internally, and finally refract it again when it comes out of the raindrop. Due to the dispersion of light an internal reflaction, different colours reach the observers eye.

Vishnu Prasad 6 years ago

Due to atmospheric refraction between the molecules of water present in the atmosphere

Dheersing Rana 6 years ago

I don't know

ANSWER

What is the function of rheostat

Posted by Piyali Saha 6 years ago

CBSE > Class 10 > Science

4 answers

Yogita Ingle 6 years ago

A rheostat is an adjustable resistor used in applications that require the varying of resistance in an electric circuit. Its function is to adjust the magnitude of current in a circuit, by varying the resistance.

Rj..... Rj..... 6 years ago

To control the resistance in a circuit. ......

Beauty... ??? 6 years ago

Through a glass prism

Romy Rajput 6 years ago

How are Rainbows formed?

ANSWER

Metlity

Posted by Jashan Preet Singh 6 years ago

CBSE > Class 10 > Science

0 answers

ANSWER

How O2and CO2 transported

Posted by Happy Singh 6 years ago

CBSE > Class 10 > Science

2 answers

?Urstruley Ashu? 6 years ago

By nose

Lucifer ? Morningstar? 6 years ago

Through blood

ANSWER

Posted by Miss. 1234 6 years ago

CBSE > Class 10 > Science

15 answers

Miss. 1234 6 years ago

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<a href="https://www.sendscraps.com/" target="_blank" />

Miss. 1234 6 years ago

Miss. 1234 6 years ago

Miss. 1234 6 years ago

bola to mene sirf mujhe dikh rhi h??

Abhi Sharma 6 years ago

Nhi dikh rhi

Miss. 1234 6 years ago

sirf mujhe hi dikh rhi h???

Miss. 1234 6 years ago

ooo??? thik h

Beauty... ??? 6 years ago

Nhiiii......

Miss. 1234 6 years ago

kya apko khch nhi dikh rha??

Beauty... ??? 6 years ago

Ye kaise pic h miss .....??show nhi ho rhi h

Shreya ... 6 years ago

Hello..aadya..?

Aadya Singh ? 6 years ago

Hello shreya...?

Aadya Singh ? 6 years ago

Miss aap kitna bhi try kar lo...yha pe pic nahi aayegi...??

Shreya ... 6 years ago

Nhi aati h pic..miss..

Miss. 1234 6 years ago

????ye kese aa gyiii

ANSWER

What is persistance of vision ?

Posted by Pooja Bashera 6 years ago

CBSE > Class 10 > Science

2 answers

Vikas Saini 6 years ago

Persistence of vision means the image stays on the retina for about 1/16 of a second.This feature is called as persistence of vision.

Anand Tushar 6 years ago

Persistence of vision tradionally refers to the optical illusion that occurs when visual perception of an object does not cease for some time after the rays of light proceeding from it have ceased to enter the eye

ANSWER

Define vegetative propagation list its two method why is this mode parasitic for growing some types of plant

Posted by Danish Ansari 6 years ago

CBSE > Class 10 > Science

2 answers

Anshika ??? 6 years ago

It is a method plants reproduce by their vegetative parts is called vegetative propagation.

Shrashti?? Bisen 6 years ago

When ,new plants are obtained from the parts of old plants without help of any reproductive organs is known as vegetative propagation

ANSWER

Name the acid present in the vinegar and tomato

Posted by Prashant Chaudhary 6 years ago

CBSE > Class 10 > Science

2 answers

Sarvagya Porwal 6 years ago

CH3COOH in vinegar oxalic in tamatar

Miss. 1234 6 years ago

acetic in vinegar and oxalic in tomato

ANSWER

Name te acid present in nt sting

Posted by Prashant Chaudhary 6 years ago

CBSE > Class 10 > Science

6 answers

Shrashti?? Bisen 6 years ago

Formic (methanoic acid) is present in ant sting

Miss. 1234 6 years ago

na ques sahi se likha h apne......aur na answer??

Miss. 1234 6 years ago

ya yoh ques puchlo ya answer hi dedo..........???

Miss. 1234 6 years ago

in ant sting

Miss. 1234 6 years ago

methanoic acid

Prashant Chaudhary 6 years ago

Formic acid methanioc acid HCOOOH

ANSWER

What is acdic

Posted by Prashant Chaudhary 6 years ago

CBSE > Class 10 > Science

5 answers

Param Eswari 6 years ago

When a substance releases H+ ions during the reaction with water, then it is said to be an acid

Shrashti?? Bisen 6 years ago

Acid is a saur substance which turns blue litmus to red litmus

Sarvagya Porwal 6 years ago

Khatta ho jo kuchh bo hai acidic indicators use karna na to khane lagna

Miss. 1234 6 years ago

are*?

Miss. 1234 6 years ago

salts of strong acid and weak base ate acidic with ph value less than 7.

ANSWER

Kya koi bulandshahr se hai

Posted by Adity@?? Gujj@R?‍✈️?️‍♂️ 6 years ago

CBSE > Class 10 > Science

6 answers

Adity@?? Gujj@R?‍✈️?️‍♂️ 6 years ago

Okkk... to ham bhi apne ghar walo se hain

Beauty... ??? 6 years ago

Mai to bhai ghar se hu.....?????

☃️? Queen ?☃️ 6 years ago

Shrashti?? Bisen 6 years ago

Me to UP se hu

Sarvagya Porwal 6 years ago

Hum to India wale hai

Miss. 1234 6 years ago

hm UP wale nhiiii Delhi wale h?????????

ANSWER

Why does hard water produce scum with soaps?

Posted by Geetu Krishnan 6 years ago

CBSE > Class 10 > Science

1 answers

Sarvagya Porwal 6 years ago

Kitab padho na jakar sabse kyon puchte ho

ANSWER

Biological magnificent

Posted by Saif Ali 6 years ago

CBSE > Class 10 > Science

1 answers

Meghna Thapar 5 years, 10 months ago

The non-biodegradable chemicals like pesticides and insecticides enter the food chains in land and aquatic ecosystems and then accumulate progressively at each trophic level. This is known as biological magnification.

ANSWER

Why sun appear out at sunset and sunrise but appear circular at noon

Posted by Pragya Sachdeva 6 years ago

CBSE > Class 10 > Science

0 answers

ANSWER

What is nutrilisation

Posted by Manshi Rajput 6 years ago

CBSE > Class 10 > Science

2 answers

Adity@?? Gujj@R?‍✈️?️‍♂️ 6 years ago

When acid react with base at that time salt and water is produce this reaction is known as nutrilisation

Aditya Raj 6 years ago

Acid and base solution to give salt and water

ANSWER

Why only 10℅ energy and mass is transferred to next trophic level in food chain

Posted by Shavi Sodhi 6 years ago

CBSE > Class 10 > Science

0 answers

ANSWER

Advantages of v.p

Posted by Shivam Kumar 6 years ago

CBSE > Class 10 > Science

1 answers

Pragya Sachdeva 6 years ago

1 the plant without seed can grow

ANSWER

Refractive index??

Posted by Kamakshi Chawla 6 years ago

CBSE > Class 10 > Science

2 answers

Shekhar Pandey 6 years ago

It is ratio of speed of light in vaccum to the speed of light in medium defined as refractive index

Dharson B 6 years ago

It the molecular formula

ANSWER

Cbse sample paper book for class 10

Posted by Arsh Saini 6 years ago

CBSE > Class 10 > Science

7 answers

Harsh Mishra 6 years ago

<a>Ankesh ..?? Now I Am Fully Ready? </a>

Harsh can u help me

What type of Help, You Need Bro....

Sarvagya Porwal 6 years ago

Edu cart

Manshi Rajput 6 years ago

Ulikes or examideas

<font style =woodcut >. Plz

Harsh can u help me

Harsh Mishra 6 years ago

You can buy the books of all subject for class 10th CBSE of Arihant Publisher which include at least 10 sample papers ......

ANSWER

State the principle behind electric generator

Posted by Beauty... ??? 6 years ago

CBSE > Class 10 > Science

2 answers

Manshi Rajput 6 years ago

Principle behind electric generator is EMI (electromegnatic induction)

?Urstruley Ashu? 6 years ago

Fleming's right hand rule

ANSWER

Why the food chain is unidirectional in nature

Posted by Subhash Chand 6 years ago

CBSE > Class 10 > Science

2 answers

Kittu Bharti 6 years ago

Their ke baad heat hoga wrong typing ho gya

Kittu Bharti 6 years ago

Because the energy lost their hea from the living organism of a food chain cant be reuced by plants in a photosynthesis

ANSWER

Which has higher resistance of 50 Watt or a 25 Watt lamp bulb and how many times?

Posted by Riya Narang 6 years ago

CBSE > Class 10 > Science

2 answers

Manshi Rajput 6 years ago

?Urstruley Ashu? 6 years ago

50 Watt

ANSWER

Difference between acquired and inherited characters

Posted by Prudhvi Yadav 6 years ago

CBSE > Class 10 > Science

2 answers

Aditya Raj 6 years ago

Acquired. The characters which during lifetime individual

?Urstruley Ashu? 6 years ago

The traits which occur in F1 generation is called acquired traits

ANSWER

What are plant hormones give the functions of different plant hormones

Posted by Ram Ji 6 years ago

CBSE > Class 10 > Science

1 answers

Shekhar Pandey 6 years ago

Culytokinin auxin gibberelin are some plant harmone

ANSWER

<font size=9><font color=Dark blue> hello to all my frnds , brothers and sisters and one bestie ji?????

Posted by Ankesh ..?? Now I Am Fully Ready? 6 years ago

CBSE > Class 10 > Science

102 answers

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Ni hui ...uupper aoo

Abhinav ? 6 years ago

Hii sis...ispe bht gussa aa rahi h

☃️? Queen ?☃️ 6 years ago

Byeee...

☃️? Queen ?☃️ 6 years ago

Bhai..

Abhinav ? 6 years ago

Ha..mai bhi try krta hu..wait..

Pata ni kyo..but unki to hui h

Abhinav ? 6 years ago

Ha..vahi ni hoti

Ha bhai sab kuch ho raha h but image show ni hoti

Abhinav ? 6 years ago

Nhi aati bro..?

☃️? Queen ?☃️ 6 years ago

??.. Byee..

☃️? Queen ?☃️ 6 years ago

Hii bro...itna chota kyu likha apne

Abhinav ? 6 years ago

Oh..?..

Aadya Singh ? 6 years ago

Maine bhi bahut pehle ek bar id banayi thi...but ab nahi chalati...?

Abhinav ? 6 years ago

Honey... ??#Girl 6 years ago

Pdhaku frnds.. Mere upper vale question k reply dedo..itne chasmish h yha p ????????????

Abhinav ? 6 years ago

Pehle thi..kl gyi thi..kaafi dino baad..aap bhi ho kya..??

Aadya Singh ? 6 years ago

Aadya Singh ? 6 years ago

Shreya insta pe h kya.. ??

Abhinav ? 6 years ago

Ha...kya kr leta..??

Aadya Singh ? 6 years ago

Ok...?....gussa ho kar bhi kya kar lete...?

Abhinav ? 6 years ago

Nhi..nhi..?

Aadya Singh ? 6 years ago

Abhinav gussa to ni na ho rahe ho...chashmish bulane par...?

Abhinav ? 6 years ago

Hello..?

Hello sis ...but by

Hm bhi .ji....ok.bye frnds..

Honey... ??#Girl 6 years ago

M mast ?

Aadya Singh ? 6 years ago

Hello once again..chashmish..? ..shreya..ankesh bhai and deepika..

Abhinav ? 6 years ago

Koi ni..ek din jane se kuch ni hoga na..good girl..?..baat toh ki tmne..?

Shreya ... 6 years ago

Ha..abhinav kl ki thi..?vapis insta pe jana pada tha..sirf ek baat ke liye..?

Shreya ... 6 years ago

Mai acchi hu..ap kaise ho..deep..aap bhi..?

KAisi ho aap

Honey... ??#Girl 6 years ago

Ohk shreya ??

Abhinav ? 6 years ago

Shreya ..baat ki tmne..a ji se..?

Ok sahi h

Shreya ... 6 years ago

Krenge ji..sabse krenge..pr zyada ni..in limits..kabhi kabhi kuch yaad aa jata h uss vajh se zyada ni krenge

Hmse bhi ni ji

Shreya ... 6 years ago

Karungi*

Shreya ... 6 years ago

Deep mai kisi ko ni bhuli..or bhul bhi ji skti..?bss..ab sabse baat ni krungu..

Shreya ... 6 years ago

Sorry mai chali gyi thi..hello adu bestu?..ankesh ji..deep..abhu..

Welcome

Abhinav ? 6 years ago

Im back..?

Sis kl wali baay shair mt krna warna sabke samne popat ho jayega

Cold ke alawa

?Urstruley Ashu? 6 years ago

Hiiiiiiiiiiii

Honey... ??#Girl 6 years ago

Cold ?

Or bataoo

Accha ji

Honey... ??#Girl 6 years ago

fog

Or batao sab ..kya chal raha h

Shi kaha......bestie ji aayi vo bhi hyi

Honey... ??#Girl 6 years ago

M hu

Aadya Singh ? 6 years ago

Bye...?

Aadya Singh ? 6 years ago

Aur sabhi log....?? ...yaha pe sabhi log ek sath hi gayab hote h..?

Hm hn sis

Aadya Singh ? 6 years ago

Kha gye sab...???

Bestie ji aap gyi kya

Honey... ??#Girl 6 years ago

Shreya hume to bhul gyi aap... Baade dino baad aayi hu m ??

Its ok sid

Aadya Singh ? 6 years ago

Hello shreya bestie...?

Abhinav ? 6 years ago

Shreya...????

Hello bestie ji

Abhinav ? 6 years ago

Ha..aaj hi dikhaunga..taki dikhne lage vaise bhi kl se preboard h..??

Aadya Singh ? 6 years ago

Ok...ok...jaldi dikha lungi...but uske liye abhi kota jana padega...?

Honey... ??#Girl 6 years ago

Srry ankesh ?

Ha jaldi dikhana

Shreya ... 6 years ago

Hello..?

Aadya Singh ? 6 years ago

Aneesh kaun h...???

Honey... ??#Girl 6 years ago

Chalo kisi n to hii bola meko ??????Halowin Day GUYS

Naam...mujhe ni pata ji

Honey... ??#Girl 6 years ago

Hi aadya, abhi and Aneesh ??????

Aadya Singh ? 6 years ago

Aapne doctor ka name nahi bataya....jane do mai apni didi se hi dikhva lungi...?

Hello honey sis

Aadya Singh ? 6 years ago

Yes...chashmis...?

Abhinav ? 6 years ago

Hello..deep

Abhinav ? 6 years ago

Chashmish..??

Aadya Singh ? 6 years ago

Hello honey...?

Ha ji ye bhi sahi h

Abhinav ? 6 years ago

Ha..sahi kaha aadya..??

Honey... ??#Girl 6 years ago

Aadya Singh ? 6 years ago

Hey chashmis....?

Aadya Singh ? 6 years ago

Chanda kyu ekkatha karenge...aap bas doctor ka name bta digiye...mere mumma papa h na...paisa dene k liye...?

Abhinav ? 6 years ago

Ha..mere vaise bhi chashma laga hua h..?

Hello astha sis

Aap chinta mti karo hm chanda ekktha kr ke aapki aakho ka opresion krwayenge

Aadya Singh ? 6 years ago

Aastha*

Aadya Singh ? 6 years ago

Hello astha..

Aastha .. 6 years ago

Hlo

Aadya Singh ? 6 years ago

Abhinav...gye kya...??

Abhi ap gye kya

Aadya Singh ? 6 years ago

Oh...?...ab to mai boards me fail ho jaungi...?

Board bhi aa raha h ..agar dikhna band ho gya to problems ho kayegi

Aadya Singh ? 6 years ago

Kisi achhe doctor ka name bta digiye...karva lungi...??

To aap sab apni aakhon ka ilaaz karwaw

Abhinav ? 6 years ago

Aadya Singh ? 6 years ago

Meko dikh hi nahi raha h...kya likha h...????

Ha sahi kaha dikh hi raha

Abhinav ? 6 years ago

Bht chota likha h bro..?

ANSWER

Chadhi kaise dhoote h

Posted by Shivam Jain 6 years ago

CBSE > Class 10 > Science

2 answers

Devansh Buchasia 6 years ago

Bhai yeh kaisa question h