General Knowledge : General Science QUESTIONS AND ANSWERS :: part17 : 81 to 85
Following General Knowledge Multiple choice objective type questions and answers will help you in TRB, SSC and UPSC 2014 examinations :
81.A plasmid is |
| a component of the cell wall |
| a part of the plasma membrane |
| a vesicle full of digestive enzymes |
| an extra-chromosomal genetic element |
82.Which of the following chemicals is used for preserving fruit juices ? |
| Ammonium sulphate |
| Sodium hydroxide |
| Sodium benzoate |
| Potassium nitrate |
83.The most important ore of aluminium is |
| bauxite |
| calamine |
| calcite |
| galena |
84.Light emmited by sun reaches earth in |
| 1 sec |
| 10 sec |
| 13 sec |
| 8 sec |
85.Which of the following cell organelles functions as the power house of a living cell ? |
| Chloroplast |
| Mitochondria |
| Ribosome |
| Golgi apparatus |
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