Engineering Chemistry (BE101) Previous Question Paper Archive

1. (a) Name the problem faced by using hard water in a boiler. Discuss any one. (b) 10,000 litres of hard water was softened by passing through a zeolite softener....

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1. Attempt any two objective question each from A to E. (Total no of 10 question to be attempted):   (A) (i) Which one of the following dissolved salt in...

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1. Attempt any ten objective questions out of fifteen questions:   (i) 1 PPM = ……….. degree clark     (a) 0.07     (b) 0.7     (c) 0.1...

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1. Attempt any two objective question each from A to E. (Total no of 10 question to be attempted):   (A) (i) Hardness in water is expressed in terms of...

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1. (a) Explain the phosphate and carbonate conditioning of boiler feed water. Why carbonate not used for high pressure boilers? (b) Calculate the quantities of lime and soda required for...

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1. (a) Write name and formula of substances which impart temporary and permanent hardness of water. Give chemical reaction involved in softening of hard water by lime soda process.  ...

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1. (a) Discuss briefly the method used for the analysis of residual chlorine.   (b) Explain the function of calgon water treatment.   (c) How the exhausted resin is regenerated...

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1. (a) Describe giving chemical equation, zeolite process of softening hard water. Mention advantages and disadvantages of zeolite process of softening water over lime-soda process.   (b) The hardness of...

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1. (a) Describe with the help of neat labeled diagram ion-exchange process for purification of water.   (b) A water sample, using FeSO47H2O as a coagulant at the rate of...

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1. (a) Explain causes of hardness in water.   (b) At what stages for which purpose hydrazine is added to high pressure boiler water?   (c) Give relationship between various...

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