UP BOARD CLASS 10TH SCIENCE OBJECTIVE IIMPORTANT QUESTION
Class 9 Science, Class 10 Science, Class 6 Science, Class 7 Science, Class 8 Science
आवर्त सारणी के प्रथम वर्ग के सदस्य हैं –
Class 10 Science, Class 6 Science, Class 7 Science, Class 8 Science, Class 9 Science