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INTRODUCTION : Alcohol is one of the most important chemicals used in the laboratories. In Biology and Chemistry laboratories it is used almost every day. In this exercise you will study how you can procure alcohol for lab activities. In India alcohol is a control item. We cannot buy alcohol from the open market by simply placing an order or inviting quotations which is done in the case of other consurnable/non-consumable items. Permit for procuring alcohol can be obtained from the Excise Department of the State Government. As lab Technical assistant you will be responsible for getting the alcohol permit and its renewal each year before 31st March. You will also maintain day-to-day records of alcohol used and kept in stock. This indeed is a very important activity as the Excise Inspector could come for a surprise check before giving a fresh permit or renewal of permit.
A mylar novelty balloon is filled with 4.5 L of He at1 atm pressure and 23 degree Celcius temperature. It is then dipped into liquid nitrogen (77K) until the gas and balloon are a
Designate on an energy level diagram thee conduction and valence bands, acceptor & donor states and position of Fermi level for (i) An intrinsic semiconductor. (ii) A n-type
0.205g of a metal on treatment with dilute acid gave 106.6ml of hydrogen collected over water at 755mm pressure and 17 degree Celsius. calculate the equivalent mass of the metal. (
Which of the following configuration is correct for iron : (1) 1s 2 , 2s 2, 2p 6 , 3s 2 , 3p 6 ,, 3d 5 (2) 1s 2 , 2s 2 , 2p 6 , 3s 2 ,3p 6 , 4s 2 , 3d 5 (3)
How S.E.P. explains stability of particular oxidation state of transition metals?
how to balnce electrically.
What is the meaning of Casting - fabrication processes Fe-C alloys with more than 2% carbon are known as cast irons. On crossing liquidus, proeutectic crystallizes first. O
Calculation of Number of Atoms per Unit Cell of HCP (n): One half of the each of the 2 base centre atoms (2x1/2), one six of the every of the 12 corner atoms (12x1/6) and all
Processing of Cereals Owing to the low moisture content, cereals and pulses are relatively stable during storage; and processing is not so much for preservation. However, proc
Q. Test for the presence of linseed oil? Hexabromide test is done to know the extent of presence of linolenic acid. In presence of fish oils, which are rich in linolenic acid,
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