15.a)O’g’it eritmasiga kumush nitrat (AgNO
3
) ta’sir ettirilganda – oq cho’kma hosil bo’ladi.
Cho’kmaning ustki qatlami sarg’ish rangda ------------------------- PRESIPITAT (SaNRO
4
*2N
2
O)
b) Cho’kmaning ustki qatlamida sariq rang bo’lmaydi -------------------------------------------GIPS
16. a)O’g’it to’q-kul rangda, kukunsimon yoki granulasimon, muhiti kislotali ------------------------------
-------------------------------------------------------SUPERFOSFAT (Sa(N
2
RO
4
)
2*
N
2
O+ 2SaSO
4
)
b) O’g’it kul rangda, malla rangdagi aralashmadan iborat va tuproqsimon kukun holatda ------------
------------------------------------------------------------------------------FOSFOR UNI (Sa3(RO4)
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