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Question 1:
(i) What are the main physical properties of hydrogen sulphide?
(ii) Which occupational group of workers is often exposed to hydrogen sulphide?
(iii) Outline two acute and four chronic health effects of human exposure to hydrogen sulphide.
(iv) Suggest four engineering and four administrative controls to hydrogen sulphide at workplaces.
Explain briefly the importance of material safety data sheet.
Containers in Illustrations C and D are identical Each container is 3.25'w x 3.25'w x 8.4'l Total capacity of each container 88.725 cubic feet Each container is filled wit
disadvantages of sludge formation
why they are called noble gases
Q. Show the solubility of double salts? The solubility of double salts of lanthanides such as 2Ln (N0 3 ).3Mg (N0 3 ) 2 .24H 2 0 and Ln2 (S0 4 ) 3 . Na 2 S0 4 .xH 2 0 increase
What gas form by the hydrolysis of CaCN 2 ? Write down the equation of the reaction of CaCN 2 with water.
Determination of oxalate in copper complex
Compounds with similar molecular formula but different properties are known as Isomers and the phenomenon is known as Isomerism.
which is the main postulate of bohr''s model of atom
what is the geometry of coordination position isomers
in Cr atom the number of electron having n+m=3
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