CBSE Class 11-science Questions and Answers

If you are looking for Class 11 Science online study materials, you’ve come to the right place. On TopperLearning, you’ll find quality e-learning materials for subjects such as Physics, Chemistry, Biology, Mathematics, and Hindi. These study materials include sample papers, MIQs, textbook solutions, video lessons and more.

Understand the course structure and exam paper pattern by going through the latest CBSE Class 11 Science syllabus. With access to the accurate list of syllabus topics, you’ll be able to create an appropriate study plan for your exams. Revision is key to remembering the key concepts learned in class. Get free access to the important revision notes for CBSE Class 11 science prepared by TopperLearning’s experts. Also, improve your Hindi writing skills with textbook solutions or understand concepts in Physics with our conceptual videos.

You just need to access your TopperLearning dashboard for utilising our compiled CBSE Class 11 Science study resources such as sample papers, NCERT solutions, syllabus, videos, revision notes and online mock tests. Study complex topics as per your convenience with our 24/7 access to CBSE Class 11 Science resources and score well in your CBSE final exams for Class 11.

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CBSE XI Science - Physics

Write the unit and dimensional formula of ratio of gravitational constant and acceleration of gravity. 

Asked by tejasgosai8 | 26th Jan, 2020, 09:55: AM

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CBSE XI Science - Mathematics

Conjugate of 2+3i

Asked by sonubharadwaj2000 | 25th Jan, 2020, 08:46: PM

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CBSE XI Science - Physics

A ball of mass m is going to collide with smooth horizontal surface. If the coefficient of restitution is e then the change in momentum of the ball is  

Asked by naveenkumarps2003 | 25th Jan, 2020, 07:05: PM

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CBSE XI Science - Chemistry

Write : (a) molecular formula, (b) electron dot formula and (c) structural formula of ethene (ethylene). 2. The molecules of alkene family are represented by a general formula CnH2n. Answer the following: (a) What do n and 2n signify ? (b) What is the name of alkene when n = 4? (c) What is the molecular formula of alkene when n= 4? (d) What is the molecular formula of the alkene if there are ten H atoms in it ? (e) What is the structural formula of the third member of the alkene family? (f) Write the molecular formula of lower and higher homologous of an alkene which contains four carbon atoms. 3. (a) Distinguish between the saturated hydrocarbon ethane and the unsaturated hydrocarbon ethene by drawing their structural formulae. (b) Draw the structures of isomers of butene and write their IUPAC names. 4. Give a balanced equation for the lab. preparation of ethylene. How is the gas collected ?​

Asked by rajk1001990 | 25th Jan, 2020, 11:03: AM

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CBSE XI Science - Chemistry

Are the questions in miq sufficient for final exams  

Asked by gauravsinghbisht552 | 24th Jan, 2020, 09:30: PM

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CBSE XI Science - Physics

In gases a sound wave is

Asked by rishikeshdash50 | 23rd Jan, 2020, 10:04: PM

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CBSE XI Science - Chemistry

a photon of 3000 Angstrom is absorbed by a gas and then re-elected as two photons. One photon is red 7600  Angstrom  .  What wavelength of other photon?  Here I am knowing solution but I am not able to understand that why we are using formula ( h*c/lambda of total =  h*c/lambda of 1 +h*c / lambda of 2 ) Please solve it 

Asked by rajarage18 | 23rd Jan, 2020, 08:00: PM

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CBSE XI Science - Chemistry

Is lithium and magnesium forms bicarbonates? If yes then which is more stable in them and which is more soluble in water?

Asked by sg908580 | 21st Jan, 2020, 09:16: PM

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CBSE XI Science - Biology

explain the following(photouynesis)

Asked by rajmohite731 | 21st Jan, 2020, 07:24: PM

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CBSE XI Science - Physics

When plug is pulled ,then a spark is shown why

Asked by srinprasad143 | 21st Jan, 2020, 02:26: AM

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