Class 10 Science

State Fleming’s left hand rule
Why does the sun appear reddish early in the morning
Write the function of each of the following parts of human eye
Why do stars twinkle ? Explain
A student is unable to see clearly the words written on the black board
Describe in brief the structure and function of placenta
Draw excretory system in human beings and label the following organs of excretory system
Name the basic filtration unit present in the kidney
Define excretion
Write one structural difference between the composition of artery and veins
Write the function of valves present in between atria and ventricles
How is copper extracted from its sulphide ore
Write the steps involved in the extraction of pure metals in the middle of the activity series
What is a dam ? Why do we seek to build large dams
Students in a school listened to the news read in the morning assembly that the mountain of garbage in Delhi
Why are alloys commonly used in electrical heating devices
Why are metals good conductors of electricity whereas glass is a bad conductor of electricity
List the factors on which the resistance of a conductor in the shape of a wire depends
Write Joule’s law of heating
Show how would you join three resistors, each of resistance 9 Ω