MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The ideal gases were in ____ group of Mendeleev’s periodic table. |
| A. | 3rd |
| B. | 4th |
| C. | 1st |
| D. | 2nd |
| Answer» D. 2nd | |
| 2. |
In Mendeleev’s periodic classification, what is the number of groups? |
| A. | 12 |
| B. | 8 |
| C. | 7 |
| D. | 6 |
| Answer» C. 7 | |
| 3. |
What are the atomic weights of Aka Silicon and Germanium? |
| A. | 72, 72.6 |
| B. | 68, 70 |
| C. | 70, 72 |
| D. | 68, 72.6 |
| Answer» B. 68, 70 | |
| 4. |
Eka Aluminium is _________ |
| A. | Germanium |
| B. | Gallium |
| C. | Silicon |
| D. | Copper |
| Answer» C. Silicon | |
| 5. |
The periodic functions of the __________ are the properties of respective elements. |
| A. | Atomic Weights |
| B. | Atomic Number |
| C. | Chemical properties |
| D. | No of protons |
| Answer» B. Atomic Number | |
| 6. |
Newland’s law of Octaves is only valid until calcium. |
| A. | False |
| B. | True |
| Answer» C. | |
| 7. |
The property of every eight elements is similar to that of the 1st element. This is proposed by ___________ |
| A. | Thomson |
| B. | Dobereiner |
| C. | Mendeleev |
| D. | John Alexander Newland |
| Answer» E. | |
| 8. |
Which of the following is not Dobereiner triad? |
| A. | Li, Na, and K |
| B. | He, Na and Ar |
| C. | Ca, Sr and Ba |
| D. | CL, Br and I |
| Answer» C. Ca, Sr and Ba | |
| 9. |
In triads, the average weight of the 1st and the 3rd element are equal to the second one. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 10. |
__________ gave the idea for the first time to classify elements as per their properties. |
| A. | Mendeleev |
| B. | Dobereiner |
| C. | Newland |
| D. | John |
| Answer» C. Newland | |