O’zbekiston respublikasi xalq talimi ta’lim vazirligi

90. Tuproqning maydalanish darajasi nima deb ataladi?
A) Tuproq morfologiyasi
V) Tuproqning mexanik tarkibi
*S) Tuproqning dispersligi
D) Tuproqning fizik darajasi
91. Mineral bo’lakchalarining tuproq massasiga aylanishidagi elementar jarayonlarga nimalar kiradi?
A) Torflarning to’planishi, shorlanish, gleylanish
*V) Birlamchi yoki ibtidoiy tuproq payda bo’lish, loylanish, lateritlanish
S) Gumus to’planish, loylanish, lateritlanish
D) loylanish, yuvilish, podzollanish
92. Organik moddalarning tuproq massasiga aylanishidagi elementar jarayonlar qanday turlarga ajratiladi?
*A) Gumus toplanishi, torf toplanishi
V) Yuvilish, gumuslanish
S) Gleylanish va rudalanish
D) Torf toplanishi, podzollanish
93.Organik va mineral moddalarning tuproq massasiga aylanishidagi elementar jarayonlar qanday turlarga ajratiladi?
*A) shorlanish, shorsizlanish, gleylanish, yuvilish, podzollanish
V) loylanish, qumga aylanish, gleylanish
S) lateritlanish, loylanish, podzollanish
D) Yuvilish, podzollanish, gumuska aylanish
94.Tuproqning payda bo’lishi eng avvalo biologik prosess ekanligini aniqlagan olim?
A) K.K.Gidroys
*V) P.A.Kostichev
S) P.S.Kossovich
D) K.D.Glinka