Organic Affecting Human Health Part 2
20.9 Some common parasitic worms Some common parasitic worms are round worms, thread worms, liver fluke and tapeworms. Roundworms (nematodes)...
Category: 9th 10th
Organic Affecting Human Health Part 1
Microorganism: Very minute living organisms not seen without the aid of microscope are called microorganisms. There are numerous microorganism but...
Current Carrying Coil In A Magnetic Field and D.C. Motor
Turning Effect On A Current Carrying Coil In A Magnetic Field 17.3 A rectangular coil ABCD has been placed in...
Treatment of Organic Sewage and Population (10th - Biology)
Treatment of Organic sewage: Sewage consists of faeces and urine along with water from kitchens, washrooms, and shops. It may...
Conservation (10th-Biology-Lesson-20.5)
It is necessary to protect and preserve the natural resources to maintain a stable and balanced ecosystem for the benefit...
Force On a Current Carrying Conductor in a Magnetic Field 17.2
When a current carrying conductor is placed in a magnetic field at right angles to it, it experiences a force...
Electricity Hazards (10th-Physics-Lesson-16. 8) Part 2
Circuit breaker It is a safety device which is used in place of fuse (fig 16.26-a) due to any fault...
Electricity Hazards (10th-Physics-Lesson-16. 8) Part 1
Electric energy is distributed to various houses in a city from a power station by means of two wires. One...
Pollution (10th-Biology-Lesson-20. 4)
Contamination of the environment with waste products and other impurities is called pollution. And the substances whose presence in air,...
Direct Current and Alternating Current (Physics-Lesson-16.7)
You have studied that if positive and negative terminals of a battery are connected to the ends of a conductor,...
