Chemistry Gk QUESTIONS AND ANSWERS :: part9 : 36 to 40
Following Multiple choice objective type questions and answers for gk in hindi will help you as a free online coaching for your hindi written exam preparation for 2024. These are useful study materials collected from previous year question papers. :
36.वाहनों से उत्सर्जित धुएँ में किसकी उपस्थिति से प्रदूषण होता है ? |
| लौह |
| सीसा |
| सोडियम |
| पोटैशियम |
37.सीसा का निष्कर्षण मुख्यतः किस अयस्क से किया जाता है ? |
| गैलना |
| हेमेटाइट |
| सिनेबार |
| ये सभी |
38.मरकरी को किस धातु के पात्र में रखा जाता है ? |
| लोहा |
| जस्ता |
| सिल्वर |
| लेड |
39.निम्न में से कौन सामान्य ताप पर द्रव है ? |
| सीसा |
| टिन |
| निकेल |
| पारा |
40.निम्न में से कौन एक द्रव धातु है ? |
| सोडियम |
| मरकरी |
| लिथियम |
| बेरीलियम |
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