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ICSE/ISC->Std 10 Questions

Total Questions 428
If 7a+8b:7c+8d = 7a-8b:7c-8d , prove that: (i) a:b = c:d (ii) 4a-5b:4c-5d = 3a+4b:3c+4d
in circulatory system what role do red blood cells play
If x/a=y/b=z/c,prove that: 2x3-3y3+4z3/2a3-3b3+4c3 = (2x-3y+4z/2a-3b+4c)3
If three quantities are in continued proportion; show that the ratio of the first to the third is the duplicate ratio of the first to the second.
what is meant by null set?.Please show with an example.
which is the last animal sent to space?.please show the date also
what is meant by the bios of the system?.
WHAT IS THE ACTUAL PROCESS BEHIND LIGHTNING?
which is the lightest element in the periodic table?. please show me a image of that metal also
The center of a circle has the co-ordinates (4,5)and the point on the circumference is(8,10).Find the co-ordinates of other and of diameter of the circle through this point.Also find the radius.
Mr.Gupta opened a Recurring Deposit Account in a bank.He deposited Rs.2500 per month for 2 years.At the time of maturity he got Rs.67500.Find: (i)total interest he got (ii)rate of interest per annum
A line AB meets the x-axis at point A and y-axis at point B.The point P(-4,-2) divides the line segment AB internally such that AP:PB=1:2.Find: (i)the co-ordinates of A and B. (ii)equation of line through P and perpendicular to AB.
Write down the equation of the line whose gradient is 3/2 and which passes through P,where P divides the line segment joining A(2,6) and B(3,-4) in the ratio 2:3.
1.What is Pyruvate? 2.One example of aerobic & anaerobic respiration. 3.One example of Catabolic & anabolic process.
How to construct circum circle & incircle ?
what is meant by covalent bond?
What is a nourishment?
note on greenhouse effect,acid rain,global warming..?
Pls give short notes on greenhouse effect(advantages&disadvantages),global warming,acid rain..?
Pls give short notes on aerobic respiration(glycolysis,krebs cycle,ETS)..?