Exercise : Chemistry MCQ Questions and Answers
1. During fermentation, the by-product is
| A. |
| B. |
| C. |
| D. |
Correct Answer : B. carbon dioxide
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2. 18 कैरट सोने में शुद्ध स्वर्ण का अनुपात होता है?
| A. |
| B. |
| C. |
| D. |
Correct Answer : D. 75%
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3. खाद्य परिरक्षण के रूप में सबसे अधिक प्रयोग होने वाला पदार्थ है?
| A. |
| B. |
| C. |
| D. |
Correct Answer : A. बेन्जोइक एसिड का सोडियम लवण
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4. Lunar caustic is
| A. |
| B. |
| C. |
| D. |
Correct Answer : C. silver nitrate
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5. इक्षु-शर्करा के किण्वन से निर्मित सिरके में होता है?
| A. |
| B. |
| C. |
| D. |
Correct Answer : D. ऐसीटिक एसिड
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6. जीवाणुओं को नष्ट करने के लिए निम्नलिखित में से किस गैस का प्रयोग किया जाता है?
| A. |
| B. |
| C. |
| D. |
Correct Answer : C. क्लोरीन
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7. The non-metal which has a shining appearance is
| A. |
| B. |
| C. |
| D. |
Correct Answer : B. iodine
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8. Marble is
| A. |
| B. |
| C. |
| D. |
Correct Answer : A. calcium carbonate
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9. The process that takes place in the atom bomb is
| A. |
| B. |
| C. |
| D. |
Correct Answer : D. nuclear fission
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10. Which of the following is used as a food preservative?
| A. |
| B. |
| C. |
| D. |
Correct Answer : C. vinegar
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