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Home /Doubts and Solutions/CBSE/Class 11 Science

CBSE Class 11 Science Free Doubts and Solutions

CBSE - XI Science - Chemistry

How to memorize all chemistry reactions by heart?

Asked by kpbhake 19th October 2018, 6:44 PM
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CBSE - XI Science - Mathematics

find the equation of the plane passing through points A (a,0,0) , B (0,b,0) and C (0,0,c) . Reduce it to normal form. If plane ABC is at a distance of p from origion prove that (1/p^2) = (1/a^2) + (1/b^2) + (1/c^2)

Asked by srivastava.amrendra 15th October 2018, 11:50 PM
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CBSE - XI Science - Mathematics

0.921 multiply 4390 using log table?

Asked by swastikwagle 14th October 2018, 6:42 PM
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CBSE - XI Science - Mathematics

eight cards bearing number 1,2,3,4,5,6,7,8, are well shuffled . then in how mAny ways the top two cards will form a pair of twin prime equals

Asked by samyakagarwal7may 12th October 2018, 11:42 PM
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CBSE - XI Science - Mathematics

the number of ways in which the number 27720 can be split into two factors which are co primes  

Asked by samyakagarwal7may 12th October 2018, 11:37 PM
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CBSE - XI Science - Physics

A ball is dropped onto a floor from a height of 20m. It rebounds to a height of 5m. If the ball is in contact with the floor for 6 milliseconds , find the magnitude of average acceleration during the contact

Asked by arunavamitra50 12th October 2018, 1:00 PM
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CBSE - XI Science - Physics

A lift coming down with a downward acceleration of 2m/s^2 . A boy standing in the lift throws a stone vertically upwards with speed of 5m/s with respect to himself. The time after which he will catch the stone is?

Asked by arunavamitra50 12th October 2018, 12:57 PM
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