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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.
Chain, nuclear or skeleton isomerism: This form of isomerism arises because of the difference in the nature of the carbon chain (that is straight or branched) which makes the
Which of the following pairs of species has same electronic configuration: (1) Zn 2 and Ni 2+ (2) Co +3 and Ni 4 (3) Co 2+ and Ni
onductomerty
Uses of methanol - Uses of monohydric alcohol (1) Methanol is extremely important industrial starting material for making formaldehyde, acetic acid and other chemicals. (2)
A water solution have 64% Na 2 S 2 O 2 together with 1.0% soluble impurity. Upon cooling to 5°C, Na 2 S 2 O 2 ·5H 2 O. crystallizes out. The solubility of this hydrate is 1.35
account for the effects of solvents on the wavelength of absorption of the acetone in terms of the hydrogen bonding properties of the solvent used
Pig iron is cast iron with a very high carbon content: 4% by weight or more. Cast iron has at least 2% carbon by weight. Less than that, and it''s steel. Cast iron and pig iron are
The two chair conformations of cis-1,3-dimethylcyclohexane
Evaporation theory and describe advantages, disadvantages and application?
2. Oxalic acid is a diprotic acid with the following deprotonation equilibria. A. You have 150 ml of a solution of pure oxalic acid with an unknown concentration.
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