PSC Dairy Extension Officer Solved Question Paper – 2015 (Part 3)

PSC Dairy Extension Officer Solved Question Paper – 2015 (Part 3)

Question 51:-Which is not a rapid platform test performed for raw milk A:-Direct microscopic count B:-Clot on boiling test C:-Standard plate count D:-Titratable acidity Correct Answer:- Option-C Question 52:-Flat or insipid flavour in butter is due to A:-Excess washing of butter granules B:-Presence of lactic acid C:-Presence of salt D:-Presence of metal ions Correct Answer:- Option-A Question 53:-Hydrolytic rancidity in butter is due to A:-Action of lipase on fat to produce free fatty acids B:-Oxidation of unsaturated fatty acids C:-Growth of moulds that convert fatty acids to ketones D:-Breakdown of proteins by putrefactive organisms Correct Answer:- Option-A Question 54:-The prescribed microbiological standard for ice-cream as per Bureau of Indian Standards A:-Standard Plate Count per gram not more than 2,00,000 B:-Coliform count per gram not more than 90 C:-Standard Plate Count per gram not more than 1,50,000 D:-Coliform count per gram not more than 70 Correct Answer:-Question Cancelled Question 55:-The optimal temperature for growth of lactic starters like Streptococcus lactis is A:-20-27°C B:-27-32°C C:-32-37°C D:-37-42°C Correct Answer:- Option-B Question 56:-The purity of starter culture can be tested using A:-Horrell-Elliker test B:-Creatine test C:-Resazurin reduction time test D:-Catalase test Correct Answer:- Option-D Question 57:-The type of yoghurt produced after fermentation in bulk and coagulam is broken prior to cooling A:-Set yoghurt B:-Stirred yoghurt C:-Concentrated yoghurt D:-Dried yoghurt Correct Answer:- Option-B Question 58:-The freezing point of cow milk is A:-0.555°C B:-0.560°C C:-0.575°C D:-0.588°C Correct Answer:- Option-A Question 59:-The bound water in milk is A:-50% held by casein, 30% by albumin and 20% by globulin B:-50% held by casein and 50% by albumin and globulin C:-50% held by casein and 30% by albumin and globulin D:-50% held by casein, 20% by albumin and 30% by globulin Correct Answer:- Option-C Question 60:-Sandy texture defect in ice-cream is due to A:-High lactose B:-Temperature fluctuation C:-Long storage D:-All the above Correct Answer:- Option-D Question 61:-Which vitamin is essential for the health and normal functioning of epithelial tissue in animal body A:-Vitamin A B:-Vitamin D C:-Vitamin E D:-Vitamin K Correct Answer:- Option-A Question 62:-Which of the following major element is needed for blood clotting and tissue excitability A:-Sodium B:-Chlorine C:-Calcium D:-Potassium Correct Answer:-Question Cancelled Question 63:-An intimate mixture of concentrates and roughages fed to cattle in the desired proportion is called A:-Challenge feeding B:-Complete feeding C:-Least cost feeding D:-Phase feeding Correct Answer:- Option-B Question 64:-Which of the following is essential for proper rumen fermentation leading to acetic acid production A:-Fat soluble vitamins B:-Water soluble vitamins C:-Crude fibre D:-Crude fat Correct Answer:- Option-C Question 65:-The cationic detergent used as an effective dairy sanitizer is A:-Bleaching powder B:-Quaternary ammonium compounds C:-Washing soda D:-Caustic soda Correct Answer:- Option-B Question 66:-Which of the following is a water soluble vitamin A:-Vitamin A B:-Vitamin C C:-Vitamin D D:-Vitamin E Correct Answer:- Option-B Question 67:-Foot and Mouth disease is a A:-Bacterial disease B:-Fungal disease C:-Metabolic disease D:-Viral disease Correct Answer:- Option-D Question 68:-A feed which contains higher level of primary nutrients, and less crude fibre and low moisture is called A:-Concentrate B:-Pasture C:-Legume D:-Roughage Correct Answer:- Option-A Question 69:-Which of the following is not a symptom of heat in dairy cows A:-Restlessness B:-Mounting other cows C:-Bloody discharge from vulva D:-Frequent bellowing Correct Answer:- Option-C Question 70:-The udder of a good dairy cow should be A:-Long and narrow B:-Symmetrical, round and hard on palpation C:-Smooth, well collapsed after milking and pendulous D:-Wide and deep, and extend well up behind Correct Answer:-Question Cancelled Question 71:-The buffalo breed indigenous to Nilgiri hills in Tamilnadu A:-Bhadawari B:-Toda C:-Murrah D:-Mehsana Correct Answer:- Option-B Question 72:-The fat content of milk in general increase in A:-Final strippings from the udder B:-Indigenous breeds as compared to exotic breeds C:-More roughage portion in diet D:-All the above Correct Answer:- Option-D Question 73:-Which method is not recommended in hand milking A:-Dry hand milking B:-Stripping C:-Full hand milking D:-Knuckling Correct Answer:- Option-D Question 74:-The metal portion of the milking machine that houses the rubber liner inside with space between to alternate the pressure by connecting to air hose A:-Teat cup shell B:-Teat cup claw C:-Pulsator D:-Bucket Correct Answer:- Option-A Question 75:-The Indian breed of cattle with long pendulous ears resembling a curled leaf is A:-Sahiwal B:-Red Sindhi C:-Gir D:-Deoni Correct Answer:- Option-C PSC Dairy Extension Officer Solved Question Paper – 2015 (Part 1) PSC Dairy Extension Officer Solved Question Paper – 2015 (Part 2) PSC Dairy Extension Officer Solved Question Paper – 2015 (Part 3) PSC Dairy Extension Officer Solved Question Paper – 2015 (Part 4)