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Driving a boat by surface tension
Secure some gum camphor at the drug shop. Cut two or three boats from stiff paper, every about 2.5 cm in length. Cut a notch in the stern large sufficient to hold a small lump of gum camphor in contact with the water without letting it fall out. Float your boats in a large pan of water.
Making a 'burp' bottle Fit a bottle or flask with a single-hole stopper which carries a funnel. Put the stopper firmly in the bottle and then pour water into the funnel. The bo
The angle of insolation on the Earth's surface is most direct at which latitude: At 0 o latitude
The digestive system is made up of two groups of organs: Alimentary tract, which includes mouth, pharynx, oesophagys, stomach, small intestine, large intestine, appendix
Human Evolution: Charles Darwin in the 'Origin of Species' gave a lilechanism for the evolution of plants and animals in general, even though he had speculated about the o
Vaccination: Now let us see how vaccination protects us from disease. We have mentioned above that the W.B.Cs. produce antibodies which neutralise the toxins produced by th
Plan 1 Induction 2 Features of science a) controlled observation b) objectivity c) falsifiability d) paradigm e) replicability 3 Aims of science a) prediction b) understanding c)
Flammable Solids : Flammable solids are substances which are flammable or liable to spontaneous combustion or emit flammable gases on contact with water. Examples are: camphor, ci
how to cache images in java or jsp without using .htaccess??
Explain Functions of the Pancreas - Digestive Action Trypsinogen and chymotrypsinogen are the inactive proteolytic enzymes of the pancreatic juice. When they come in contact wi
This mineral has the name "bloodstone" because it provides a deep red color on a streak test. What is its chemical formula? Fe 2 O 3
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