MCQOPTIONS
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MCQOPTIONS
This section includes 259 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 251. |
The last orbit of argon would have element |
| A. | 2 |
| B. | 6 |
| C. | 8 |
| D. | 18 |
| Answer» D. 18 | |
| 252. |
Which of the following noble gases has the largest van |
| A. | Xe |
| B. | Kr |
| C. | Ne |
| D. | Ar |
| Answer» B. Kr | |
| 253. |
The inert form of carbon is |
| A. | Graphite |
| B. | Coal |
| C. | Diamond |
| D. | Charcoal |
| Answer» D. Charcoal | |
| 254. |
An electrician's solder is an alloy of |
| A. | Cu and Pb |
| B. | Zn and Cu |
| C. | Sn and Pb |
| D. | Fe and Zn |
| Answer» D. Fe and Zn | |
| 255. |
The hydrogen halide with the highest boiling point is |
| A. | HI |
| B. | HBr |
| C. | HCI |
| D. | HF |
| Answer» E. | |
| 256. |
On adding little phosphorus to silicon we get |
| A. | Insulator |
| B. | Metallic |
| C. | n-type semiconductor |
| D. | p-type semiconductor |
| Answer» C. n-type semiconductor | |
| 257. |
In manufacture of glass the addition of MnO |
| A. | Yellow colur |
| B. | Red colour |
| C. | Violet colour |
| D. | Pink colour |
| Answer» E. | |
| 258. |
Which of the following is an important consituent of transistors ? |
| A. | Pb |
| B. | Os |
| C. | Sn |
| D. | Ge |
| Answer» E. | |
| 259. |
Which of the following shows electrical conduction ? |
| A. | Diamond |
| B. | Sodium |
| C. | Graphite |
| D. | Potassium |
| Answer» D. Potassium | |