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1.SRT - pisana provjera znanja

Authored by Danijela Leko

Chemistry

9th Grade

Used 2+ times

1.SRT - pisana provjera znanja
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30 questions

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1.

FILL IN THE BLANK QUESTION

30 sec • 1 pt

Maseni udio bakra u rudama je mali pa se ruda koncentrira procesom koji se zove .......

(1 bod)

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Mjed je legura: (jedan točan odgovor)

(1 bod)

željeza i ugljika

bakra i cinka

bakra i kositra

bakra i željeza

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Halogeni element koji spriječava nastanak karijesa je: (jedan odgovor je točan)

(1 bod)

fluor

klor

brom

kisik

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Kao antiseptik u medicini koristi se: (jedan točan odgovor)

( 1bod)

klor

fluor

jod

brom

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Koliko kisika ima u atmosferi? (jedan točan odgovor)

(1 bod)

78%

50%

21%

90%

6.

FILL IN THE BLANK QUESTION

30 sec • 1 pt

Agregatno stanje svih halkogenih elemenata (osim kisika) je ___________ .

(1 bod)

7.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

Svojstva elementarnog kisika su: (više točnih odgovora)

(0.5 bodova za svaki točan odgovor)

bezbojan, bez mirisa i okusa

inertan (nereaktivan)

podržava gorenje, ali ne gori

ne gori i ne podržava gorenja

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