Gk Questions with AnswersChemistry Gk Questions and Answers
| 9. | Stainless steel contains | ||
|---|---|---|---|
| A. Fe+ Cr +Ni | |||
| B. Fe+ Ni+ Cu | |||
| C. Fe+ Cr+ Cu | |||
| D. Fe+ C+ Ni | |||
| Answer | ||
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| 10. | Which is the rarest naturally occurring element of earth? | ||
|---|---|---|---|
| A. Astatine | |||
| B. Antimony | |||
| C. Germanium | |||
| D. Gold | |||
| Answer | ||
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| 11. | Indane gas is a mixture of | ||
|---|---|---|---|
| A. Methane and oxygen | |||
| B. Butane and propane | |||
| C. Butane and oxygen | |||
| D. Butane and hydrogen | |||
| Answer | ||
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| 12. | Natural radioactivity was discovered by | ||
|---|---|---|---|
| A. Schmidt | |||
| B. Rutherford | |||
| C. Curie | |||
| D. Becquerel | |||
| Answer | ||
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