General Knowledge : General Science QUESTIONS AND ANSWERS :: part1 : 66 to 70
Following General Knowledge Multiple choice objective type questions and answers will help you in TRB, SSC and UPSC 2024 examinations :
66.Which form of Phosphorus is used in safety matches ? |
| White Phosphorus |
| Yellow Phosphorus |
| Red Phosphorus |
| Black Phosphorus |
67.Gobar gas contains mainly |
| methane |
| carbon dioxide |
| butane |
| carbon monoxide |
68.Brass is an alloy of |
| nickel and copper |
| zinc and copper |
| nickel and zinc |
| nickel and silver |
69.Chlorophyll is a naturally occurring chelate compound in which the central metal is |
| iron |
| copper |
| calcium |
| magnesium |
70.Which of the following is used in making smoke bombs ? |
| Sulphur |
| Phosphorus |
| Hydrogen |
| Carbon |
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