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Steam supply for experiments in heat
A tin with a press-on lid may be used to make a steam can. Punch two holes in the lid and solder by them one long and one short pipe as shown in the diagram. The long pipe serves as a safety valve and the short single supplies steam to the experiment (by a rubber tube attached). When the tin leaks or becomes rusty the similar lid may be transferred to a same tin.
Q. Detect the presence for sesame oil and linseed oil? To detect the presence for sesame oil, linseed oil, argemone oil, mineral oil and hydrocyanic acid. After undertaking
The electronic configuration of a dipositive metal M 2+ is 2, 8, 14 and its atomic weight is 56 a.m.u. The number of neutrons in its nuclei would be: (1) 30 (2)32
1. A sample of water contains: suspended matter = 100 mg; Ca(NO3)2 = 16.4 mg/L; MgSO4 = 24 mg/L; MgCl2 = 19 mg/L; NaOH = 40 mg/L and KOH = 56 mg/L. Calculate temporary, permanent a
In neutral atom, which particles are equivalent: (1) P + e + (2 ) e - e + (3) e -, P + (
Tests of phenol - Hydrocarbon (a) Aqueous solution of phenol gives a violet colouration with a drop of ferric chloride. (b) Aqueous solution of phenol gives a white precipit
Consult the inside front cover of the text for a list of common functional groups. (a) nitrile (b) ether
Q. How to change in Oxidation Number in Redox Reactions? Ans. In reduction-oxidation, or redox, reactions, atoms undergo changes in their oxidation numbers. Consider th
#sulphuric acid can be made with concentration of 99%.however for diferent industrial requirement ,62% h2so4 is used which has density of 1.55 g/ml.calculate the molarity,molality
. Types of salt and what happens when expose to the atmosphere
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