सेंडाई फ्रेमवर्क एक 15 वर्षीय, स्वैच्छिक,गैर- बाध्यकारी समझौता है।
The correct statement with regard to H+2 & H−2 is
What will be the area A of the quadrilateral in each case with their diagonal d cm & the sum of their heights (h1+h2) cm.
i) d=20,(h1+h2)=10
ii) d=15,(h1+h2)=20
iii) d=20,(h1+h2)=25
iv) d=40,(h1+h2)=30
Assertion : For drying H2S, Conc. H2SO4 cannot be used.
Reason: Moist H2S is oxidized by Conc.H2SO4