Sodium carbonate is used in soda-acid fire extinguishers.
15. Alpha cells in the Islets of Langerhans of pancreas secrete insulin.
16. A semi digested food by the action gastric juice in the stomach is called a bolus.
17. Hydraulic pressure is used in the extraction of oil from oil seeds.
18. Acceleration can get negative value also
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Answer:
Soda-acid fire extinguishers comprises of sodium bicarbonate and sulphuric acid. It is the most efficient house-hold fire extinguisher. It consists of a strong iron vessel with a side discharge nozzle. The iron vessel is filled with a sodium bicarbonate solution.
15.1.4 Islets of Langerhans and the Pancreatic Microenvironment
Alpha cells release glucagon, beta cells release insulin, delta cells release somatostatin, gamma cells release pancreatic polypeptide (PP), and epsilon cells release gherlin. The different cell types communicate with each other.
16.These muscles allow the stomach to squeeze and churn the food during mechanical digestion. Powerful hydrochloric acid in the stomach helps break down the bolus into a liquid called chyme.
17.Hydraulic Press is used to extract oil from most oil-bearing materials like seeds, beans and nuts.
When an object is speeding up, the acceleration is in the same direction as the velocity. Thus, this object also has a negative acceleration.
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18.