CBSE > Class 11 | CBSE Board | Homework Help

Admission Test Physics Chemistry Biology Mathematics Applied Maths Accountancy Economics Business Studies English Core हिंदी कोर History Political Science Geography Sociology Psychology Physical Education Computer Science Informatics Practices Painting Reasoning & Mental Ability Legal Studies गणित लेखाशास्त्र जीव विज्ञान व्यवसाय अध्ययन मनोविज्ञान रसायन विज्ञान भौतिक विज्ञान English Elective NCERT हिंदी ऐच्छिक इतिहास राजनीति विज्ञान भूगोल अर्थशास्त्र समाजशास्त्र Engineering Graphics गृह विज्ञान Home Science शारीरिक शिक्षा Multimedia and Webtech English Elective CBSE (Deleted) Entrepreneurship संस्कृत कोर (भास्वती) संस्कृत ऐच्छिक (शाश्वती) Philosophy (Deleted) Biotechnology Financial Market Management Other Subjects Regional Language Information Technology (802)

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

Ask Question

Who made the first printing press?

Posted by Urmika Sarkar 6 years, 11 months ago

CBSE > Class 11 > History

3 answers

Krishna Yadav 6 years, 11 months ago

Sorry it is Johnnes Gutenberg exactly ...its my mistake

0Thank You

Sumayla Khan 6 years, 11 months ago

Johannes Gutenberg

2Thank You

Krishna Yadav 6 years, 11 months ago

James Gutenberg

1Thank You

ANSWER

Relation b/w kc and kp

Posted by Himani Bhatia 6 years, 11 months ago

CBSE > Class 11 > Chemistry

4 answers

Ankit Singh 6 years, 11 months ago

Hope this help u

1Thank You

Ankit Singh 6 years, 11 months ago

Relationship between Kc and Kp In a reaction, aA + bB = cC + dD we can write Assuming the gaseous components to behave ideally, PiVi = niRT or where (i) is the molar concentration of the species 'i'. n = (Number of moles of gaseous products)-(Number of moles of gaseous reactants). Thus, n is equal to the difference in the number of gaseous moles of products and the number of gaseous moles of reactants. The above equation can be rewritten as Kp = Kc (RT)n

2Thank You

Aman Kumar 6 years, 11 months ago

If ∆n < 0,then kp>kc.............If ∆n=0 then kp=kc..........If ∆n > 0 , then kp<kc

1Thank You

Aman Kumar 6 years, 11 months ago

Kp=kc (RT)^∆n

3Thank You

ANSWER

How many teeth in mosquito?

Posted by @@Ditya ®°@Thore????? 6 years, 11 months ago

CBSE > Class 11 > Psychology

3 answers

@@Ditya ®°@Thore????? 6 years, 11 months ago

Thanks for answer the question

0Thank You

@@Ditya ®°@Thore????? 6 years, 11 months ago

Correct answer

3Thank You

Lily ☺ 6 years, 11 months ago

0Thank You

ANSWER

All log rules and define

Posted by Mayank Patil 5 years, 8 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

Bernouli principle

Posted by Jaat Community 6 years, 11 months ago

CBSE > Class 11 > Physics

1 answers

Yogita Ingle 6 years, 11 months ago

For a streamline fluid flow, the sum of the pressure (P), the kinetic energy per unit volume (ρv2/2) and the potential energy per unit volume (ρgh) remain constant.
Mathematically:- P+ ρv²/2 + ρgh = constant
- where P= pressure ,
- E./ Volume=1/2mv²/V = 1/2v²(m/V) = 1/2ρv²
- E./Volume = mgh/V = (m/V)gh = ρgh

2Thank You

ANSWER

The focal length of a plane convex glass lens is 50 cm find the radius of curvature of its curved surface. (ug glass = 1.5)

Posted by Tejaswini Khole 6 years, 11 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

The focal length of a plane Congress glass lens is 50 cm find the radius of curvature of its curved surface ( u = glass = 1.5)

Posted by Tejaswini Khole 6 years, 11 months ago

CBSE > Class 11 > Physics

6 answers

Ankit Singh 6 years, 11 months ago

Aacha ??ok yakshi

1Thank You

Yakshi ? 6 years, 11 months ago

Nai.....mainey 10th class ke acc. Btaya tah

1Thank You

Ankit Singh 6 years, 11 months ago

U have complete optics yakshi

1Thank You

Ankit Singh 6 years, 11 months ago

Yes me bhi

1Thank You

Aman Kumar 6 years, 11 months ago

Mai help jarur karta but I had not started optics yet

1Thank You

Yakshi ? 6 years, 11 months ago

Radius toh focal length ki double hoti hai naah.......??? toh shaayad se iska answer 100cm ho ......meri physics kuchh zyaada e weak hai???

2Thank You

ANSWER

Who is mrs dolle

Posted by Bikash Thakur 6 years, 11 months ago

CBSE > Class 11 > English Core

1 answers

Yanshi Dhawan 6 years, 10 months ago

Dolle was the sister of the narrators mother

0Thank You

ANSWER

What are the way in which specimens are kept in musium

Posted by Renu Sharma 6 years, 11 months ago

CBSE > Class 11 > Biology

1 answers

Smriti Shikha 6 years, 11 months ago

Cork and foam plastics are convenient examples. Open trays are very vulnerable to attack by museum beetles and similar pests. So, such open trays are stored in turn inside glass-topped insect proof drawers, commonly protected by suitable pesticides, repellents or barriers.

1Thank You

ANSWER

What type of relationship between teacher and student portrayed in the play Browning version?

Posted by Pragya Arora 6 years, 11 months ago

CBSE > Class 11 > English Core

1 answers

Smriti Shikha 6 years, 11 months ago

As there are two teachers in the play and Taplow is represented as the speaker of all the students as an unit. So from the play we come to know that although Mr Crocker Harris did not like to be liked by the students but still they liked him. Mr Crocker Harris was a man of strict principles and regulations therefore students were afraid of him but still they liked him. He was so strict that even on the last working day he called Taplow for extra work which he had missed once due to his illness and Taplow was obedient to come. But Frank encouraged him to cut Crocker Harris and play golf but Taplow did not move from the place. He was an obedient student and he knew how to respond to the punishment given by the teacher. So there was true relationship between the teacher and student as shown by both the characters. Both were respectful and conscious towards their duties and it is shown in the play how did they fulfil their duties.

2Thank You

ANSWER

Can you provide lab manual of class 11 of lens

Posted by Satyam Jaiswal 6 years, 11 months ago

CBSE > Class 11 > Physics

3 answers

Yakshi ? 6 years, 11 months ago

????

2Thank You

Ankit Singh 6 years, 11 months ago

Here ???????

2Thank You

???. Pragati 6 years, 11 months ago

Here???????¿...

1Thank You

ANSWER

Formula of water

Posted by Akshpreet Singh 6 years, 11 months ago

CBSE > Class 11 > Chemistry

2 answers

Ankit Singh 6 years, 11 months ago

H2O ???

1Thank You

???. Pragati 6 years, 11 months ago

H20 ??

2Thank You

ANSWER

What is partial pressure of a gas...(easy define)

Posted by Hritik Gupta 6 years, 11 months ago

CBSE > Class 11 > Biology

1 answers

Ritu Thapliyal 6 years, 11 months ago

It is the pressure exerted by an individual gas in a mixture of gases.....

2Thank You

ANSWER

A wheel makes 360 revolution in one minute. Through his many radius does it turn in one second

Posted by Harsh Kumar 6 years, 11 months ago

CBSE > Class 11 > Mathematics

1 answers

Deepak Singh 6 years, 11 months ago

12π

2Thank You

ANSWER

How a atom know that he have to react or bonding rather he did not have brain

Posted by Sumit Nimiwal 6 years, 11 months ago

CBSE > Class 11 > Chemistry

1 answers

Aryan Jaswal 6 years, 11 months ago

Atom have a electrostatic energy which attract other electron . If an atom have energy to attact other atom they will take bonding with each other. For example- If you have money then you can give party to your friend and attract your friend and your friend is with you and a energy is created between you and your friend but if you have not money then you cannot give party to your friends and your friends have not attachement with you.

0Thank You

ANSWER

Derive the projectile motion??

Posted by Prathmesh Mulay 6 years, 11 months ago

CBSE > Class 11 > Physics

1 answers

Ankit Singh 6 years, 11 months ago

Let a projectile be thrown up with a velocity u at angle angle w. Velocity of projectile along the horizontal is u∗cos(w) and velocity along the vertical is u∗sin(w). During the motion of the projectile there is no force acting in the horizontal direction. There is only the force of gravity acting in the vertically downward direction. So horizontal component of velocity remains same. Only the vertical component changes. Also the net displacement of the particle is 0. s=ut+(gt2)/2 We use this equation in the vector form 0=u∗sin(w)∗t−(gt2)/2 Solving this you get t=2u∗sin(w)/g This is the time of flight of the projectile. During this time the horizontal range covered is R=u∗cos(w)∗2u∗sin(w)/g Simplifying this you get R=(u2)∗sin(2w)/g At the highest point of the projectile the vertical component of the velocity becomes 0. So now we use the formula v2=u2−2as 0=(u∗sin(w))2−2gh Solving this you get h=((u∗sin(w))2)/2g Hope that was useful.

2Thank You

ANSWER

Was the king really ' just and placid' ?

Posted by Aditya Shaw 6 years, 11 months ago

CBSE > Class 11 > English Core

1 answers

Smriti Shikha 6 years, 11 months ago

Yes the king was really just and placid. As the king was peace loving and wanted to maintain peace and liberty he was just and placid. By being just and placid the ruler would never achive anything. If the king had not been just and placid then under any situations and conditions he would never have allowed himself to be hanged.

2Thank You

ANSWER

What is Bernoulli's theorem derive its expression

Posted by Sandy Kumar 6 years, 11 months ago

CBSE > Class 11 > Physics

1 answers

Aman Kumar 6 years, 11 months ago

Here.??..check it in revision note section or in videos .....??

2Thank You

ANSWER

I am unable to understamding oraganic chemistry plz if u able then help me ...

Posted by Rittik Kumar 6 years, 11 months ago

CBSE > Class 11 > Chemistry

3 answers

Ankit Singh 6 years, 11 months ago

I have seen the videos bahut aache se Sanjaye hai

1Thank You

Yakshi ? 6 years, 11 months ago

Don't worry . ......i know u are getting confused with IUPAC names ........i am giving u the name of youtube channel it will be very helpful for u .....really it helped me a lot and reduced my confusion.......plz search " pradeep kshetrapal" on youtube i m sure it will help u

3Thank You

Harshit Tyagi 6 years, 11 months ago

It is very easy

3Thank You

ANSWER

Importance of judiciary in india

Posted by Rohit Sharma 6 years, 11 months ago

CBSE > Class 11 > Political Science

0 answers

ANSWER

Explain any four characteristics of business activity

Posted by Rakshith T.S 6 years, 11 months ago

CBSE > Class 11 > Business Studies

0 answers

ANSWER

Compare and contrast the characters of Mrs Pearson and Fitzgerald

Posted by ?????Geetanjali???? ? 6 years, 11 months ago

CBSE > Class 11 > English Core

1 answers

Smriti Shikha 6 years, 11 months ago

Mrs Pearson and Mrs Fitzerald are two contrasting characters. Mrs Pearson is caring and loving wife and mother. Her excessive love and care have spoilt her husband and children. The result is that they take her for granted and not show any interest for her comfort they act selfishly. On the other hand Mrs Fitzerald is aggressive, authoritative and a dominating lady. She is more prqctical and talented. She judges correctly that Mrs Pearson could never control her family unless she takes some drastic steps. She exchanges personality with Mrs Pearson to teach a lesson to her family members.

8Thank You

ANSWER

Write the purpose of the following SELECT statement ? SELECT Itemcode, I Name AS "Item Title" from Item ;

Posted by Tannu Singh 6 years, 11 months ago

CBSE > Class 11 > Informatics Practices

1 answers

Rittik Kumar 6 years, 11 months ago

SELECT is used for give direction for generating our commands

3Thank You

ANSWER

What is accounting adjustment

Posted by Mayank Aneja 6 years, 11 months ago

CBSE > Class 11 > Accountancy

1 answers

Parth Patel 6 years, 11 months ago

It is the adjustments which we have to do in our final accounts as some transcations are not recorded in trial balance properly.

0Thank You

ANSWER

A living organism is unexceptionaly differentiated from a nonliving structure on the basis of

Posted by Vedanti A Shirbhate 6 years, 11 months ago

CBSE > Class 11 > Biology

1 answers

Kratika Mehta 6 years, 11 months ago

On the basis of their interaction with the environment , while a non living structure does not show any kind of interaction.

0Thank You

ANSWER

What is the formula of alcohol?

Posted by ?????Geetanjali???? ? 6 years, 11 months ago

CBSE > Class 11 > Chemistry

7 answers

Anushka Jaiswal 6 years, 11 months ago

C(n)H(2n+1)OH Where n=no. Of carbon

1Thank You

Yakshi ? 6 years, 11 months ago

Nancy rajput is right.....that is the real formula

2Thank You

Aryan Jaswal 6 years, 11 months ago

0Thank You

Shruti Gupta 6 years, 11 months ago

C2H50H

0Thank You

Rittik Kumar 6 years, 11 months ago

0Thank You

Nancy Rajput 6 years, 11 months ago

CnH2n+1 OH

1Thank You

?????Geetanjali???? ? 6 years, 11 months ago

Koi tho batao please

0Thank You

ANSWER

What is covalent bond and polarising power

Posted by Amit Kumar 6 years, 11 months ago

CBSE > Class 11 > Chemistry

2 answers

Nancy Rajput 6 years, 11 months ago

Polarising power is the ability of an atom or group of atoms to attract the shared pair of electrons toward itself. Its depends on these two factors. 1] Polarizing power of a cation- Polarizing power is the tendency of metal cation to distort the electron cloud of anion. 2] Polarizibility of anion- Tendency of anion to get distorted because of the polarizing power of cation is called polarizibility power of anion.

2Thank You

Nancy Rajput 6 years, 11 months ago

the bond formed by mutual sharing of electrons is called covalent bond

2Thank You

ANSWER

an object is placed between 2 plane mirrors inclined at angle θ with each other. What is the total number of image formed.

Posted by Ʌɐpɐʎ Ɐuɐɥsɹɐp . 6 years, 11 months ago

CBSE > Class 11 > Physics

4 answers

Ʌɐpɐʎ Ɐuɐɥsɹɐp . 6 years, 11 months ago

hyyy will you answer my next question ❓ ?

0Thank You

Nancy Rajput 6 years, 11 months ago

welcome?

0Thank You

Ʌɐpɐʎ Ɐuɐɥsɹɐp . 6 years, 11 months ago

tanks Nancy ☺️

0Thank You

Nancy Rajput 6 years, 11 months ago

If the image of an object is viewed in two plane mirrors that are inclined to each other more than one image is formed. The number of images depends on the angle between the two mirrors.

2Thank You

ANSWER

Where is infomative practise .it is old syllabus plz update new book ..python ip

Posted by Ayana Sharma 6 years, 11 months ago

CBSE > Class 11 > Informatics Practices