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8-sinf 3-test

Authored by Bunyod Saydaliyev

Physics

8th Grade

Used 2+ times

8-sinf 3-test
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5 questions

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1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

180 mg massali suv tomchisida nechta mo­lekula bor?

1018

1017

3×1015

6×1021

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Kislorod (O2) molekulasining massa qan­chaga teng (kg) bo‘ladi?

5,3×10-26

5,3×10-23

19×10-23  

3,2×10-23

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

6,02×1026 ta temir atomining massasini hisoblang (kg). Temirning molyar massasi 56 g/mol.

28

280

56

168

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Hajmi 0,3 l bo‘lgan suvdagi molekulalar sonini aniqlang.

1026

3,3×1025

3,3×1026

1025

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

To’rt mol suv qancha hajmni egallaydi. Tugri javobni toping (sm3)?

2

72

64

18

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