General Knowledge : General Science QUESTIONS AND ANSWERS :: part2 : 11 to 15
Following General Knowledge Multiple choice objective type questions and answers will help you in TRB, SSC and UPSC 2014 examinations :
11.the group of metals Fe, Co, Ni may be best called as |
| alkali metals |
| rare metals |
| main group metals |
| transition metals |
12.Which of the following elements is obtained from sea weeds ? |
| Argon |
| Sulpur |
| Vanadium |
| Iodine |
13.Which of the following reactions is used for increasing the number of carbon atoms in a chain ? |
| Substitution reaction |
| Wurtz reaction |
| Friedel -Crafts reaction |
| Cannizzaros reaction |
14.Atoms are composed of |
| electrons only |
| protons only |
| electrons and protons |
| electrons and nucler |
15.The chemical used as a fixer in photography is |
| borax |
| sodium thiosulphate |
| sodium sulphate |
| ammonium persulphate |
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