विज्ञान के महत्वपूर्ण प्रश्न रेलवे और एसएससी के लिए/ Important Objective Science Questions for Railway & SSC exams (Hindi + English) : Chemistry-3 Important GS Objective Questions for all exams (For Biology check below) Chemistry Question 51 to 75 Question # 51 Which process is inserted to extract the iron from iron ore: Option 1: Oxidation
विज्ञान के महत्वपूर्ण प्रश्न रेलवे और एसएससी के लिए/ Important Objective Science Questions for Railway & SSC exams (Hindi + English) : Chemistry-2 Important GS Objective Questions for all exams (For Biology check below) Chemistry Question 26 to 50 Question # 26 Most fuels are carbon compound: Option 1: With phosphorus Option 2: With nitrogen Option 3: With
विज्ञान के महत्वपूर्ण प्रश्न रेलवे और एसएससी के लिए/ Important Objective Science Questions for Railway & SSC exams (Hindi + English) : Chemistry-1 Important GS Objective Questions for all exams (For Biology check below) Chemistry Question 1 to 25 Question # 1 The chemical behavior of any atom is depend upon his: Option 1: Number of