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ICSE Class 12 Science Free Doubts and Solutions

ICSE - XII Science - Chemistry

For reaction A(g) + B(g)  AB(g) we start with 2 moles of A and B each. At equilibrium 0.8 moles of AB is formed. Then how much of A changes to AB :- (1) 20% (2) 40% (3) 60% (4) 4%

Asked by Atulcaald 25th May 2018, 12:27 AM
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ICSE - XII Science - Physics

during lightning,the charges flow from low potential to high potential.how can you tell that the charges in clouds are at lower potential than the ground?

Asked by my3shyll 10th May 2018, 7:08 PM
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ICSE - XII Science - Mathematics

Given two matrices A and B,  A = [endif]-->  and  B = [endif]-->  Find AB. Use this result to solve the following system of equations. X ─ 2y + 3z = 6,  X + 4y + z = 12,  X ─ 3y + 2z = 1.    

Asked by Raj 25th April 2018, 8:01 PM
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ICSE - XII Science - Mathematics

Given two matrices A and B   A = [1, 2,3]  and  B = [11, 5, 1]  Find AB.  Use this result to solve the following system of equations.  x 2y + 3z = 6, x + 4y + z = 12, x  3y + 2z = 1.

Asked by Raj 25th April 2018, 7:04 PM
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ICSE - XII Science -

How many types are matter?

Asked by kumarganeshbhw 26th March 2018, 8:01 PM
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ICSE - XII Science -

If the two co-efficient of regression are -0.6 and -1.4, find the co-efficient of correlation.

Asked by sspadmavithal 28th February 2018, 12:27 PM
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ICSE - XII Science -

Find the regression coefficient of y on x for the following data: ∑x=60, ∑y=105, ∑x2=800, ∑y2=2000, ∑xy=1200 and n=10.

Asked by sspadmavithal 28th February 2018, 12:26 PM
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