5 th grade science

Bacterial Disease Disease Symptoms Prevention and Control Tuberculosis Loss of weight Vaccination Persistent diarrhoea is intestinal tuberculosis Use of suitable antibiotic Intermittent fever with a dry husky cough in lung tuberculosis Breast glan..

Time in Seconds 0 5 10 15 20 25 30 35 Distance covered in metres 0 10 20 30 40 50 60 70 ..

One cell division involves four phases Consists of two sub-divisions: Meiosis - I and Meiosis - II each involving four phases. Prophase - I is again subdivided into five sub-stages No crossing over Crossing over takes place Daughter cells have identical chromosomes to parent c..

Represent the atom of sodium whose atomic mass is 23 and atomic number is 11. Calculate the number of protons, electrons and neutrons..

Group I A elements Electronic configuration No.of elememnts Hydrogen 1 1 Lithium 2,1 2 Sodium 2,8,1 3 Potassium 2,8,8,1 4 Rubidium 2,8,18,8,1 5 Caesium 2,8,18,18,8,1 6 Francium 2,8,18,32,18,8,1 7 ..

Sl. No Nobel Gas Symbol 1. Helium He 2. Neon Ne 3. Argon Ar 4. Krypton Kr 5. Xenon Xe 6. Radon Rn The names of the elements had originated from different sources in different ways. Some of them are discussed here. For example, Hydrogen was na..

Name of the Crop Name of Disease Symptoms Control Measure Rice Blast Brown boat-shaped lesions appear on the leaves Seed treatment with thiram solution in water. Spray bavistin at 10 days interval Wheat Rust Yellow, brown or black elongated spots appear on leaves Sp..

Speed of Sound - The flash of lightning due to collision of clouds is seen much before the thunder, although both occur simultaneously. This happens because the velocity of light is greater than the velocity of sound. The speed of sound depends on the properties of the medium through which it trave..

When a small piece (pea size) of sodium is placed in cold water, it darts about on the water with a hissing sound and produces hydrogen. The water left behind, acquires the property of turning red litmus blue. This shows the presence of a basic substance, which is sodium hydroxide Physical Change C..

Electrons revolve around the nucleus in different energy levels or shells and each shell is associated with definite energy. The energy of the K shell is the least while those of L, M, N and O shells increases progressively. We also know that any system that has least energy is the most stable.1 s..