General Science Study Notes

Science - Question	Answer
The temperature at which all substances have zero thermal energy?	-273 degree Celsius
Any substance which when added to a reaction, alters the rate of the reaction but remains chemically unchanged at the end of the process is called?	Catalyst
The study of the inter-relations of animals and plants with their environment is called?	Ecology
Study of insects is called?	Entomology
A unit used to express the focal power of optical lenses?	Dioptre
The velocity that a body with less mass must achieve in order to escape from the gravitational attraction of a more massive body is called?	Escape Velocity
Laughing gas is chemically known as?	Nitrous Oxide
The blood vessels carrying blood from the heart to various parts of the body is called?	Artery
The distance travelled by light in one year is called?	Light year
The rate of change of position of a body with respect to time in a particular direction and is a vector quantity is called:	Velocity
An organism which derives its nourishment from another living organism is called?	Parasite
Newton's which law states that the rate of change of momentum of a body is directly proportional to the force applied and takes place in the direction in which the force acts?	Newton's second law of motion
Which is the world's first man-made satellite?	Sputnik-I
Which planet is the brightest of all the planets?	Venus
Small pieces of solid matter which are found scattered in the inter-planetary space of the solar system are known as?	Meteoroids
The largest gland in the body which is dark red in colour is?	Liver
Inadequate secretion of Insulin hormone causes which disease?	Diabetes
Common cold, Influenza, Chickenpox and Measles are caused due to the attack of Virus or Bacteria?	Virus
In which atmospheric layer is the communication satellite located?	Ionosphere
The scientific principle behind 'Fiber Optics' is?	Total internal reflection of light