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chemistry in action - Detergents
A result of high dissolving power, the logically happening water all time consists of dissolved matters, majorly ionic substances. Hard water has specific metal ions like Ca2+ and Mg2+. These ions react along with soap. (Sodium salts of stearic and associated natural acids), to make a curdy precipitate of magnesium and calcium salts. This precipitate sticks to clothing and blocks the capability of soaps to take away oil and grease from fabrics. Synthetic detergents are extremely similar to the salts of fatty acids originate in soap, separately from that they are manufactured chemically from materials others as compared to the animal fats.
construction & working.
A simple rotation machine Secure a breast-drill or hand- drill like as the one shown in the diagram. Clamp a small screw eye or cup hook in the chuck of the drill. Join a 30 cm
Illustrate "Tangent law" in magnetism. Compare magnetic moment of two bar magnet in a tan A, tan B position by null method or equal distance method.
UNIT: SI unit of impulse is NS (Newton x Second) or kgms -1
He customized Newton's formula suppose that propagation of sound in gaseous medium is adiabatic process. For adiabatic method
How many types of hologen and gas discharge are there? This will depend upon the use of the system. Gas discharge lamps, particularly those with a very small plasma area are pr
State the Working of UJT Make circuit arrangement as demonstrated in fig.(c), where UJT is represented by its equivalent circuit comprising resistances R B1
mechanical wave
A metal rod of mass 10 g and length 10 cm is placed on a smooth 60 degree incline. A uniform magnetic field B is applied in the region vertically downwards . If a current of 3 A is
Q. Define roentgen and activity and Curie? One roentgen (1R) is described as the quantity of radiation which produces 1.6 × 10 12 pairs of ions in 1 gram of air. The activi
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