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Cement and concrete
Secure a small bag of Portland cement. Have the pupils mix it with water and put it in tin can covers, paper cups, or small pasteboard boxes unless it hardens. Study its appearance and its properties. Break a piece of cement and study it. Mix the dry cement with about twice as much sand or gravel. This will form concrete. After adding water and mixing thoroughly place it in moulds. Permit these to arden various days. Again study the appearance and the characteristics of these samples.
Scurvy Disease occurs due to vitamin C deficiency.
working of calomel electrode
Explain the Formation of sedimentary rocks? Lithification refers to the processes by which loose sediments are consolidated into new rock material. One of the most common forms
what is the name of the theory that explains plate movement?
Acute and Chronic Effects : The effects of accidents due to chemicals are severe and immediate on the human body. These effects are called acute effects and can be traced without
Non-Specific Defence Mechanism The non-specific defence mechanism is implemented for different types of infections. It resists infection in two ways, firstly, by blocking the e
State the harmul effects of Acidity of soil Acidity of soil may have harmful effects on plants due to the effect on enzymatic changes, reduced availability of nutrients like c
what are the different respiratory disease in man . give their symptoms and cause
a. A 2 mm diameter parallel beam of photons each with energy of 100 keV is incident on a water phantom of thickness 15 cm. If the exit exposure is 2 mR (caused by primary photons),
assignment on microscope
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