1. कलन   calculus   psychology   algebra   chemistry   Hint Half-n-half Clue   2. रसायन-शास्त्र   botany   geometry   geology   chemistry   Half-n-half Clue   3. भूविज्ञान   algebra   botany   geology   calculus   Half-n-half Clue   4. जीवविज्ञान   calculus   algebra   geology   biology   Half-n-half Clue   5. बीजगणित   zoology   botany   algebra   trigonometry   Half-n-half Clue   6. वनस्पतिशास्त्र   botany   physics   calculus   history   Half-n-half Clue   7. इतिहास   algebra   history   trigonometry   geography   Half-n-half Clue