MCQOPTIONS
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MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Mg+O2=MgO Balance the above Chemical equation? |
| A. | 2Mg + O2 ----> 2MgO |
| B. | 2Mg + O ----> 2MgO |
| C. | 2Mg + O ----> MgO2 |
| D. | 2Mg + O2 ----> MgO2 |
| Answer» B. 2Mg + O ----> 2MgO | |
| 2. |
What is the IUPAC name for the following compound? H3C-C C-H |
| A. | Acetylene |
| B. | Methyl acetylene |
| C. | Butanol |
| D. | Decanoic Acid |
| Answer» C. Butanol | |
| 3. |
The oxidation number of Cr in K2Cr2O7 is |
| A. | +6 |
| B. | -5 |
| C. | +3 |
| D. | -4 |
| Answer» B. -5 | |
| 4. |
which of the following are chemical changes? |
| A. | Cooking of Food |
| B. | Digestion of Food |
| C. | Freezing of water |
| D. | Water is heated up |
| Answer» B. Digestion of Food | |