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9-sinf metallar

Authored by Jahongir Nurdinboyev

Chemistry

9th Grade

Used 1+ times

9-sinf metallar
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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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