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. |
Which is the oxidizing agent used in the test for phosphorous? |
| A. | Hydrogen peroxide |
| B. | Potassium nitrate |
| C. | Sodium peroxide |
| D. | Nitric acid |
| Answer» D. Nitric acid | |
| 2. |
A X color precipitate, which is Y in ammonium hydroxide indicates presence of chlorine. Identify X and Y. |
| A. | X = yellowish, Y = soluble |
| B. | X = yellow, Y = insoluble |
| C. | X = white, Y = insoluble |
| D. | X = white, Y = soluble |
| Answer» E. | |
| 3. |
In case of both nitrogen and sulphur existence, Prussian blue is still the color of the end product. |
| A. | True |
| B. | False |
| Answer» C. | |
| 4. |
What is the color of the precipitate obtained in the test for sulphur? |
| A. | White |
| B. | Black |
| C. | Violent |
| D. | Blue |
| Answer» C. Violent | |
| 5. |
In the test for nitrogen, the sodium fusion extract is acidified with which of the following? |
| A. | Dilute sulphuric acid |
| B. | Dilute hydrochloric acid |
| C. | Concentrated hydrochloric acid |
| D. | Concentrated sulphuric acid |
| Answer» E. | |
| 6. |
What is Lassaigne s test extract called as? |
| A. | Fusion extract |
| B. | Sodium fusion extract |
| C. | Lassaigne extract |
| D. | Sodium extract |
| Answer» C. Lassaigne extract | |
| 7. |
Potassium can replace sodium in lassaigne s test. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 8. |
Identify the element that cannot be detected by Lassaigne s test. |
| A. | Nitrogen |
| B. | Fluorine |
| C. | Sulfur |
| D. | Phosphorous |
| Answer» C. Sulfur | |
| 9. |
Which compound gets precipitated in the detection of carbon and hydrogen? |
| A. | Copper |
| B. | Carbon dioxide |
| C. | Calcium carbonate |
| D. | Copper sulphate |
| Answer» D. Copper sulphate | |
| 10. |
Carbon and hydrogen are detected by heating the compound with which of the following? |
| A. | Copper (II)oxide |
| B. | Iron(II)oxide |
| C. | Iron(III)oxide |
| D. | Copper(I)oxide |
| Answer» B. Iron(II)oxide | |