
9-sinf metallar
Authored by Jahongir Nurdinboyev
Chemistry
9th Grade
Used 1+ times

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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ishqoriy metallardan qaysi biri stimulyatorlik xossasiga ega bo’ladi ?
Li,Rb
Na
K
Fr
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Har kuni ovqat tarkibida 5 gr bolishi kerak bo'lgan ishqoriy metallni zaharlili dozasi necha gr ?
6 gr
92-200 mg
0.1-2 mg
zaharli emas
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quyidagilar ichidan "galit" ni toping ?
NaCl
Na2SO4
Na2SO4*10H2O
Na2CO3
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hint silitrasini toping ?
NaNO3
KNO3
KCl
NaCl
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Karnallit fo'rmulasini toping ?
KCl*MgSO4*3H2O
KCl*MgCl2*6H2O
K2O*Al2O3*6SiO2
NaNO3
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
ishqoriy metallardan qaysi biri alanga rangini och binafshaga bo'yaydi ?
K
Na
Rb
Li
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Alanga rangini sariq rangga bo'yaydigan ishqoriy metall ?
Li
Na
K
Fr
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