
General Knowledge : General Science QUESTIONS AND ANSWERS :: part3 : 81 to 85
Following General Knowledge Multiple choice objective type questions and answers will help you in TRB, SSC and UPSC 2014 examinations :
81.Superphosphate fertilizer is perpared by the reaction between |
Calcium phosphate and Sulphuric hydroxide |
Sodium phosphate and Sodium nitrate |
Magnesium phosphate and Sodium nitrate |
Sodium sulphate and Phosphoric acid |
82.Consider the following statements about antigens : 1. They induce the formation of antibodies. 2. They provide immunity. 3. They are formed only within the body.Of these statements, the correct ones are |
1 and 2 |
2 and 3 |
1 and 3 |
1, 2 and 3 |
83.The major ingredient of leather is |
carbohydrate |
collagen |
polymer |
nucleic acid |
84.In a refrigerator, cooling is produced by |
the ice which deposits on the freezer |
the sudden expansion of a compressed gas |
the evaporation of a volatile liquid |
None of these |
85.Ball bearings are used to reduce friction by |
applying lubricants to the balls used |
reducing the area of contact with the use of metallic balls |
increasing the area of contact with the use of metallic balls |
None of these |
More General Science QUESTIONS AND ANSWERS available in next pages
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Health is the greatest gift, contentment is the greatest wealth -Buddha

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