Gk Questions with AnswersChemistry
DIRECTIONS : Questions based on Chemistry.
| 61. | What is the chemical name for marble? | ||
|---|---|---|---|
| A. Potassium nitrate | |||
| B. Calcium carbonate | |||
| C. Titanium dioxide | |||
| D. Calcium bicarbonate | |||
| 62. | Which of the following metals is in liquid state at normal room temperature? | ||
|---|---|---|---|
| A. Gallium | |||
| B. Radon | |||
| C. Silicon | |||
| D. Sodium | |||
| 63. | The chemical name of bauxite is | ||
|---|---|---|---|
| A. Aluminium oxide | |||
| B. Aluminium chloride | |||
| C. Aluminium sulphite | |||
| D. Hydrated aluminium oxide | |||
| 64. | Which of the following is the hardest element? | ||
|---|---|---|---|
| A. Copper | |||
| B. Diamond | |||
| C. Iron | |||
| D. Silicon | |||
| 65. | Biogas mainly contains | ||
|---|---|---|---|
| A. Oxygen | |||
| B. Carbon dioxide | |||
| C. Methane | |||
| D. Nitrogen | |||