Maths
Give expression for Pythagoras theorem
a2+b2=c2
which particle orbits the Atom?
Electron
what is the term for substance which increases the rate of reaction?
Catalyst
What molecule carries genetic information in cell?
DNA
The most notable achievement of islamic mathematics was?
Algebra
Name of the triangle whose two sides are same?
Isosceles traingle
what happens to the speed of light when it enters the denser medium?
It decreases
Why alkali metals are highly reactive?
Because they easily loose their one valence electron.
What term describes the movement of water across the semi permeable membrane?
Osmosis
Which country has more pyramids than egypt?
Sudan
What is the next number in the series.....1,4,9,16,25.....?
36
Why is efficiency of real machine always less than 100%?
Due to loss of energy in the form friction
Common compound used in hair bleaches?
Hydrogen peroxide , H2O2
What does RNA and DNA stands for?
Ribo-nucelic acid and Deoxy-nucliec acid
Which country has no river at all?
Saudi Arabia
Who were the first people to use the negative numbers?
Chinese
What causes the Mirage on hot road.
Refraction , due to the temeprate dependent air density
The scientist who died in the discovery of radioactivity. name the sceintist and material
Madam curie and Radium
What is the function of the red blood cells?
To transport oxygen
Which country officially has three capital cities, each with a different function?
South Africa
How many digits of Pi are there?
Infinity
why prism seperates white light into spectrum?
Different color has different wavelengths that travel with different speed in glass
Japanese chemist Akira Yoshino switched from low-yield polyacetylene to a carbonaceous material electrode in 1985, locking in what critical piece of cell phone tech?
Lithium-ion battery
Which scientist proposed the theory of evolution by natural selection?
Charles Darwin
Which country has a law requiring citizens to smile in public advertisements?
Thailand