General Knowledge : General Science QUESTIONS AND ANSWERS :: part18 : 6 to 10
Following General Knowledge Multiple choice objective type questions and answers will help you in TRB, SSC and UPSC 2014 examinations :
6.Oxidation involves : |
| gains in electrons |
| gain of hydrogen |
| loss of electrons |
| combustion |
7.Red, yellow and blue are known as |
| primary colours |
| complementary colours |
| primary pigments |
| secondary colours |
8.Which of the following is used as a lubricant ? |
| Graphite |
| Silica |
| Diamond |
| Iron oxide |
9.What is the main constituent of natural gas ? |
| Methane |
| Ethane |
| Butane |
| Hydrogen |
10.Rusting of iron is an example of : |
| rapid oxidation |
| spontaneous combustion |
| slow oxidation |
| reduction |
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