CBSE > Class 10 | CBSE Board | Homework Help

Ask questions which are clear, concise and easy to understand.

Ask Question

why copper vessels are cleaned with lemon

Posted by Deepa Kumari 5 years, 8 months ago

CBSE > Class 10 > Science

3 answers

? Pranali.A.P ? 5 years, 8 months ago

It's my pleasure ?

0Thank You

Deepa Kumari 5 years, 8 months ago

ok thanks

0Thank You

? Pranali.A.P ? 5 years, 8 months ago

The citric acid present in the lemon or tamarind neutralises the basis copper carbonate and dissolves the layer. That is why, tarnished copper vessels are cleaned with lemon or tamarind juice to give the surface of the copper vessel its characteristic lustre.

0Thank You

ANSWER

How can I join test series?

Posted by Deepa Kumari 5 years, 8 months ago

CBSE > Class 10 > Science

3 answers

? Pranali.A.P ? 5 years, 8 months ago

I also don't know ?

0Thank You

Deepa Kumari 5 years, 8 months ago

how

0Thank You

Ashwin Gupta 5 years, 8 months ago

जब test series start ho tab join kar lena

0Thank You

ANSWER

What is life?

Posted by Deepa Kumari 5 years, 8 months ago

CBSE > Class 10 > English Language and Literature

5 answers

Deepa Kumari 5 years, 8 months ago

ur answer

0Thank You

Ashwin Gupta 5 years, 8 months ago

Isme kya prove karna hai

0Thank You

? Pranali.A.P ? 5 years, 8 months ago

Life is to live every single moment of it and experience every single thing that comes to us…let it not be categorized as good or bad,happy or sad…..

0Thank You

Deepa Kumari 5 years, 8 months ago

prove ur answer

0Thank You

Ashwin Gupta 5 years, 8 months ago

Happiness sadness is a life because everyone face these 2 things in every day of life

1Thank You

ANSWER

What is the syllabus of CBSE board 2020-21

Posted by Abhijeet Anand 5 years, 8 months ago

CBSE > Class 10 > Mathematics

3 answers

...User Not Available.... 5 years, 8 months ago

You can get the syllabus in Google .... And one thing 30 % of syllabus is reduced....

0Thank You

Ashwin Gupta 5 years, 8 months ago

30 persent reduce hoga syllabus

0Thank You

Deepa Kumari 5 years, 8 months ago

go and upload from Google if u have internet connection

0Thank You

ANSWER

Nationalist encinal balcon

Posted by Khushi Basfor 5 years, 8 months ago

CBSE > Class 10 > Social Science

1 answers

? Pranali.A.P ? 5 years, 8 months ago

While the 18th century in the Balkans was dominated by the steady decline of Ottoman power, the outstanding feature of the 19th century was the creation of nation-states on what had been Ottoman territory. Because the emergence of national consciousness and the creation of nation-states were conditioned by local factors, each nation evolved in an individual way. Nevertheless, some general characteristics are discernible.

1Thank You

ANSWER

Not meet h axis meet only y axis

Posted by Saravjit Singh 5 years, 8 months ago

CBSE > Class 10 > Mathematics

1 answers

...User Not Available.... 5 years, 8 months ago

Can you repeat your question properly .....

0Thank You

ANSWER

Solve the following system of equations graphically 2x-y-4=0 and x+y+1=0 find the points where the lines meet h axis

Posted by Saravjit Singh 5 years, 8 months ago

CBSE > Class 10 > Mathematics

3 answers

? Pranali.A.P ? 5 years, 8 months ago

Nhi aata bhai muze?

0Thank You

Saravjit Singh 5 years, 8 months ago

Please Solve the answer

0Thank You

? Pranali.A.P ? 5 years, 8 months ago

Don't know

0Thank You

ANSWER

What do the military generals do?

Posted by Headshot Kings 5 years, 8 months ago

CBSE > Class 10 > English Language and Literature

2 answers

Anu Kumari 5 years, 8 months ago

Military general do their duty. They were very loyal to the rules of country.

0Thank You

? Pranali.A.P ? 5 years, 8 months ago

While they do often carry ~nstitutional bias, they offer information on defense developments in greater depth than the general media. ... they offer insight into the development of military thought. The journals reviewed are those that address the needs of professionals in the defense sector.

0Thank You

ANSWER

11 th term of ap -3,-1/2,2........ Is ( Tanmy aapke question ka answer)

Posted by ? Pranali.A.P ? 5 years, 8 months ago

CBSE > Class 10 > Mathematics

5 answers

? Pranali.A.P ? 5 years, 8 months ago

I am using only WhatsApp

0Thank You

...User Not Available.... 5 years, 8 months ago

In insta can you follow me ?? dramebaaz_cool__girl

1Thank You

? Pranali.A.P ? 5 years, 8 months ago

Yes

1Thank You

...User Not Available.... 5 years, 8 months ago

Hey do you use any social media app??

0Thank You

? Pranali.A.P ? 5 years, 8 months ago

An=a+(n-1)d........ n=11 ........... a=-3 ......... d=5/2........ hence 11th term =-3+(11-1)*5/2 =22.... ( hope this answer helped...)?

1Thank You

ANSWER

Yes , but only whatsapp and Facebook

Posted by ? Pranali.A.P ? 5 years, 8 months ago

CBSE > Class 10 > विज्ञान

1 answers

Bipin Kumar 5 years, 6 months ago

Online paper kaise de sakte ha ????????????????????

0Thank You

ANSWER

Kitnoon ko poetry likhna pasand hai ✍✍??

Posted by Prisha ?? 5 years, 8 months ago

CBSE > Class 10 > Music

4 answers

A V 5 years, 7 months ago

Mujhe bhi pasand hai aur mae meri poetries compose bhi karta hu

0Thank You

Pavithra Pillai 5 years, 8 months ago

Me too

0Thank You

? Pranali.A.P ? 5 years, 8 months ago

Haa

0Thank You

Sana(Silent Love).. ?? 5 years, 8 months ago

Likhna nhi but padhna pasand h..

0Thank You

ANSWER

1/a+1/b+1/x=

Posted by P Kz 5 years, 8 months ago

CBSE > Class 10 > Mathematics

2 answers

Gaurav Seth 5 years, 8 months ago

QUESTION: Solve; 1/a+b+x=1/a+1/b+1/x

Answer:

1/(a+b+x)=1/a + 1/b + 1/x

1/(a+b+x) -1/x = 1/a + 1/b

x-(a+b+x)/x(a+b+x) = a+b/ ab

-1(a+b) /x(a+b+x) = a+b/ ab

-1(a+b)/(a+b) = x(a+b+x)/ab

-1=x(a+b+x) / ab

-ab= (a+b)x + x²

so, x2 + (a+b)x +ab = 0

now, A = 1, B=(a+b) C= ab..

so, D = B² - 4AC

=(a+b)² - 4ab

= (a-b)²

so, x = (-B + root D)/2A and (-B-root D)/2A

= -a-b+a-b /2*1 and -a-b-a+b /2*1

= -2b/1 and -2a /1

so,x = -2b or -2a .

0Thank You

? Pranali.A.P ? 5 years, 8 months ago

Don't know

0Thank You

ANSWER

Hii sana ????how are you ??

Posted by Prisha ?? 5 years, 8 months ago

CBSE > Class 10 > English Language and Literature

5 answers

Sana(Silent Love).. ?? 5 years, 8 months ago

Ok aapko jb poochna ho tb pooch lena..

1Thank You

Prisha ?? 5 years, 8 months ago

But I am not free yet ?

0Thank You

Sana(Silent Love).. ?? 5 years, 8 months ago

Haanji poochiye..

1Thank You

Prisha ?? 5 years, 8 months ago

I am also fine but mujhe tumse kuch puchhna tha

0Thank You

Sana(Silent Love).. ?? 5 years, 8 months ago

Fine nd u..??

3Thank You

ANSWER

11th term of ap: -3,-1/2,2...,is

Posted by Tanmay Bagade 5 years, 8 months ago

CBSE > Class 10 > Mathematics

5 answers

Tanmay Bagade 5 years, 8 months ago

1Thank You

? Pranali.A.P ? 5 years, 8 months ago

Hoooo.......

0Thank You

Tanmay Bagade 5 years, 8 months ago

Asude

0Thank You

? Pranali.A.P ? 5 years, 8 months ago

Nahi mahit

1Thank You

Tanmay Bagade 5 years, 8 months ago

Sang patkan

1Thank You

ANSWER

Can you have pdf of hindi grammer book of class 10

Posted by Jainam G Patel 5 years, 8 months ago

CBSE > Class 10 > हिंदी ए

4 answers

Suryansh Singh 5 years, 8 months ago

Yes u can Have

1Thank You

Tanmay Bagade 5 years, 8 months ago

Download from Google

0Thank You

...User Not Available.... 5 years, 8 months ago

No......

0Thank You

? Pranali.A.P ? 5 years, 8 months ago

0Thank You

ANSWER

Notes of federalism

Posted by Palak Rathore 5 years, 8 months ago

CBSE > Class 10 > Social Science

3 answers

Aditya Gupta 5 years, 8 months ago

hii... palak

0Thank You

Pranjal Yadav 5 years, 8 months ago

Yes i know this answer

0Thank You

? Pranali.A.P ? 5 years, 8 months ago

Federalism is a system of government in which power is divided between a central authority and various constituent units of the country. A federation has two levels of government. Both these levels of governments enjoy their power independent of the other. One is the government for the entire country that is usually responsible for a few subjects of common national interest. Governments at the level of provinces or states that look after much of the day-to-day administering of their state.

1Thank You

ANSWER

If m times mth term of an AP is equal to n times nth term, then show that (m+n)th term of the AP is zero

Posted by Aradhana Hota 5 years, 8 months ago

CBSE > Class 10 > Mathematics

3 answers

? Pranali.A.P ? 5 years, 8 months ago

1Thank You

Tanmay Bagade 5 years, 8 months ago

1Thank You

? Pranali.A.P ? 5 years, 8 months ago

Let the first term of AP = a....... common difference = d......... We have to show that (m+n)th term is zero or a + (m+n-1)d = 0........ mth term = a + (m-1)d....... nth term = a + (n-1) d........ Given that m{a +(m-1)d} = n{a + (n -1)d}...... ⇒ am + m²d -md = an + n²d - nd am - an + m²d - n²d -md + nd = 0........ ⇒ a(m-n) + (m²-n²)d - (m-n)d = 0........ ⇒ a(m-n) + {(m-n)(m+n)}d -(m-n)d = 0....... ⇒ a(m-n) + {(m-n)(m+n) - (m-n)} d = 0....... ⇒ a(m-n) + (m-n)(m+n -1) d = 0........ ⇒ (m-n){a + (m+n-1)d} = 0 ....... ⇒ a + (m+n -1)d = 0/(m-n)....... ⇒ a + (m+n -1)d = 0...... Proved!

3Thank You

ANSWER

What chemical process is used for obtaining metal from its oxide?

Posted by Swandeepan Saikia 5 years, 8 months ago

CBSE > Class 10 > Science

5 answers

Ayush Panday 5 years, 8 months ago

Reduction..

0Thank You

...User Not Available.... 5 years, 8 months ago

Reduction

0Thank You

Tanmay Bagade 5 years, 8 months ago

Reduction....

0Thank You

Ishita ???✨✨✨ 5 years, 8 months ago

Reduction

1Thank You

? Pranali.A.P ? 5 years, 8 months ago

reduction

1Thank You

ANSWER

Define combination reaction ..... From chemistry ....

Posted by ...User Not Available.... 5 years, 8 months ago

CBSE > Class 10 > Science

5 answers

...User Not Available.... 5 years, 8 months ago

I am also fine.... Do you use any social media app ???

0Thank You

? Pranali.A.P ? 5 years, 8 months ago

I am fine, and what about u

1Thank You

...User Not Available.... 5 years, 8 months ago

How are you neha ??? .....

1Thank You

Ishita ???✨✨✨ 5 years, 8 months ago

A reaction in which two or more element or compound combine to form a single compound.

2Thank You

? Pranali.A.P ? 5 years, 8 months ago

A combination reaction is a reaction where two or more elements or compounds combine to form a single compound. Such reactions may be represented by equations of the following form: X + Y → XY. The combination of two or more elements and form one compound is called combination reaction.

2Thank You

ANSWER

kis Rajya Mein Swapan Ki Kisi Ki Jaati Hai

Posted by Sarita Devi 5 years, 8 months ago

CBSE > Class 10 > सामाजिक विज्ञान

0 answers

ANSWER

Hello koi online hy kya ??????

Posted by I ♥️♥️♥️♥️You So Much ♥️♥️♥️ 270505 5 years, 8 months ago

CBSE > Class 10 > English Language and Literature

5 answers

I ♥️♥️♥️♥️You So Much ♥️♥️♥️ 270505 5 years, 8 months ago

Kese ho aap sab

0Thank You

Sana(Silent Love).. ?? 5 years, 8 months ago

Haa

0Thank You

? Pranali.A.P ? 5 years, 8 months ago

Haa

0Thank You

Prisha ?? 5 years, 8 months ago

Haa bhai bolo

0Thank You

...User Not Available.... 5 years, 8 months ago

✌️✌️✌️

0Thank You

ANSWER

Which metal salt react with acid to produce carbon dioxide

Posted by Dharmvir Singh 5 years, 8 months ago

CBSE > Class 10 > Science

4 answers

? Pranali.A.P ? 5 years, 8 months ago

When acids react with carbonates, such as calcium carbonate (found in chalk, limestone and marble), a salt, water and carbon dioxide are made. The carbon dioxide causes bubbling during the reaction, which is observed as fizzing.

0Thank You

...User Not Available.... 5 years, 8 months ago

CaCO3 metal salt react with acid to produce CO2

0Thank You

Gaurav Seth 5 years, 8 months ago

Reaction of acids with metal carbonate:

Acids give carbon dioxide gas and respective salts along with water when they react with metal carbonates.

Metal carbonate + Acid ⇨ Salt + Carbon dioxide + Water

Examples: Hydrochloric acid gives carbon dioxide gas, sodium chloride along with water when it reacts with sodium carbonate.

Na₂CO₃ + 2HCl ⇨ 2NaCl + CO₂ + H₂O

Hydrochloric acid gives carbon dioxide, magnesium chloride and water when it reacts with magnesium carbonate.

MgCO₃ + 2HCl ⇨ MgCl₂ + CO₂ + H₂O

Hydrochloric acid gives carbon dioxide gas, calcium chloride and water when it reacts with calcium carbonate.

CaCO₃ + 2HCl ⇨ CaCl₂ + CO₂ + H₂O

Sulphuric acid gives calcium sulphate, carbon dioxide gas, calcium sulphate and water when it reacts with calcium carbonate.

CaCO₃ + H₂SO₄ ⇨ CaSO₄ + CO₂ + H₂O

0Thank You

Suryansh Singh 5 years, 8 months ago

CaCO3

0Thank You

ANSWER

The factories act,minimum wages act,payment of gratuity act,shops and establishment act are followed by a. Organised sector b. Unorganised sector C. Agricultural sector d.Household sector

Posted by Tanishka Dhonge 5 years, 8 months ago

CBSE > Class 10 > Social Science

2 answers

Gaurav Seth 5 years, 8 months ago

a. Organised sector

The enterprises or places of work where the terms of employment are regular and therefore, people have assured work.
They are registered by the government and have to follow its various laws such as the Factories Act, Minimum Wages Act, Payment of Gratuity Act, Shop and Establishment Act, etc. Workers enjoy the security of employment, they work only fixed a number of hours and given benefits like paid leave, Provident Fund, and medical facilities.

0Thank You

Suryansh Singh 5 years, 8 months ago

Unorganized

0Thank You

ANSWER

(a-b) x+(a+b)y=a2-2ab-b2(a+b)(x+y)=a2+b2

Posted by Namitha Namitha 5 years, 8 months ago

CBSE > Class 10 > Mathematics

1 answers

Gaurav Seth 5 years, 8 months ago

Given that (a-b) x + (a + b)y = a2 - 2ab - b2 -------------(1)

(a+b) x+ (a+b)y = a2 + b2 -------------(2)

Substracting (2) from (1) we get

-2bx = -2ab

=2b2 x = a + b

Subsitute x in equation (2) we get y = - 2ab / ( a + b).

1Thank You

ANSWER

123*4

Posted by Vishal Verma 5 years, 8 months ago

CBSE > Class 10 > Mathematics

5 answers

...User Not Available.... 5 years, 8 months ago

492

0Thank You

Deepa Kumari 5 years, 8 months ago

502

0Thank You

? Pranali.A.P ? 5 years, 8 months ago

Hiiii ?

0Thank You

Prachi Tamrakar 5 years, 8 months ago

Prachi ?p.a.p

0Thank You

? Pranali.A.P ? 5 years, 8 months ago

What ??

1Thank You

ANSWER

Buy meaning

Posted by Vijaya Lakshmi 5 years, 8 months ago

CBSE > Class 10 > हिंदी ब

2 answers

Vikshit Kumar 5 years, 8 months ago

खरीदना. to get something by paying for it. Ok vijaya I hope you understand that.

0Thank You

? Pranali.A.P ? 5 years, 8 months ago

obtain in exchange for payment

1Thank You

ANSWER

Radhe Radhe ji ???

Posted by I ♥️♥️♥️♥️You So Much ♥️♥️♥️ 270505 5 years, 8 months ago

CBSE > Class 10 > English Language and Literature

3 answers

Sana(Silent Love).. ?? 5 years, 8 months ago

Hii i m fine yrr aap to aate he nhi ho ab.. kha gayab rehete ho..??♥️♥️

0Thank You

I ♥️♥️♥️♥️You So Much ♥️♥️♥️ 270505 5 years, 8 months ago

Good morning sana ♥️♥️♥️♥️♥️♥️♥️♥️♥️??

0Thank You

Sana(Silent Love).. ?? 5 years, 8 months ago

Radhe Radhe ji

1Thank You

ANSWER

Good morning friends have a nice day ????

Posted by I ♥️♥️♥️♥️You So Much ♥️♥️♥️ 270505 5 years, 8 months ago

CBSE > Class 10 > English Language and Literature

5 answers

I ♥️♥️♥️♥️You So Much ♥️♥️♥️ 270505 5 years, 8 months ago

I am good how are you ??????

0Thank You

Account Deleted 5 years, 8 months ago

Very Good Morning

1Thank You

? Pranali.A.P ? 5 years, 8 months ago

G m

0Thank You

Sana(Silent Love).. ?? 5 years, 8 months ago

Kaise h aap. ??

0Thank You

Sana(Silent Love).. ?? 5 years, 8 months ago

0Thank You

ANSWER

What do you mean by second's pendulum?

Posted by Drift? Boi? 5 years, 8 months ago

CBSE > Class 10 > Science

5 answers

? Pranali.A.P ? 5 years, 8 months ago

Kuch nhi

0Thank You

Drift? Boi? 5 years, 8 months ago

Kya hua ,

0Thank You

? Pranali.A.P ? 5 years, 8 months ago

It's my pleasure ?

0Thank You

Drift? Boi? 5 years, 8 months ago

Thnx

0Thank You

? Pranali.A.P ? 5 years, 8 months ago

A seconds pendulum is a pendulum whose period is precisely two seconds; one second for a swing in one direction and one second for the return swing, a frequency of 12 Hz. A pendulum is a weight suspended from a pivot so that it can swing freely.

1Thank You

ANSWER

Give the poetic devices in the ball poem

Posted by Akshita Agarwal 5 years, 8 months ago

CBSE > Class 10 > English Language and Literature