What is difference between acids and bases? What are indicators? Name some natural and human made indicators! What is the function of pancreas and abdomen.. Explain briefly... Why sting of ant contains formic acid? Why zinc carbonate is present in calamine solution?What does digestive juices contain? Why we only inhale oxygen? Why only oxygen is used for breakdown of food? Why oxygen supports burning? Explain with activity...What do u mean by manure and fertilisers?Difference between manure and fertilisers?What is seed drill? Tell some advantages of manure?! Draw a diagram of luner eclipse and solar eclipse ! Name some methods of irrigation?! What is threshing? What are pathogens? What is chemical method of preservation of food? What is nitrogen fixation? Explain NITROGEN CYCLE?!What are thermosetting plastics? Is plastic non reactive? What are sonours? Explain digestion process in humans! Tell some user of metals and nonmetals?!Chemical formula of calcium carbonate?! What can be the ph of acidic rain? What is ignition temperature?What is shape of a cell? Wat are pseudopodia? Explain the structure of cell with diagram! What are amino acids? Briefly describe the. function of cell! (What is cell membrane, cytoplasm etc etc) What is Gene? Is structure of the nucleus same in cells of plants and animals and bacteria? What is puberty? What are hormones? Which gland produces hormones? What's Adam's Apple? What is electrostatic force?
Answers
Answer:
1) Acids when dissolved in water produce hydrogen ions whereas Bases produce Hydroxyl ions when dissolved in water.
2) Indicators are special substances which are used to test whether a substance is acidic or basic in nature. Turmeric, litmus and red-cabbage are examples of some naturally occurring indicators. Phenolphthalein and methyl orange are human-made indicators.
3) PANCREAS : Enzymes, or digestive juices, are secreted by the pancreas into the small intestine. There, it continues breaking down food that has left the stomach. The pancreas also produces the hormone insulin and secretes it into the bloodstream, where it regulates the body's glucose or sugar level.
ABDOMEN : The abdomen helps in breathing via the accessory muscles of respiration.The primary functions of the abdomen consist of digestion, breathing, posture and balance, as well as movement
4) Ant sting contains the simplest carboxylic acid found in nature, Methanoic acid which is also known as formic acid. Formic acid got its name from “formica”, the Latin name for ant
5) Calamine solution contains zinc carbonate which is basic in nature. It is just a fact and not really likely to question "WHY".
Now please try to solve the remaining questions of your own. The answers can be found in the SCIENCE TEXTBOOK in the specific chapter....!!!