TEST 31.07.2025

TEST 31.07.2025

11th Grade

12 Qs

quiz-placeholder

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TEST 31.07.2025

TEST 31.07.2025

Assessment

Quiz

Science

11th Grade

Practice Problem

Medium

Created by

Linh Nguyen

Used 2+ times

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12 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

Dung dịch chất nào sau đây làm xanh quỳ tím?

KCl
Na2SO4
NaOH
HCl

2.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

Dung dịch chất nào sau đây làm quỳ tím hóa đỏ?

HBr
K2SO4
KOH
KCl

3.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

Dung dịch chất nào sau đây không làm đổi màu quỳ tím?

HI
Ba(OH)2
Na2SO4
CH3COOH

4.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Một dung dịch có pH = 11,7. Nồng độ ion hydrogen (H+) của dung dịch là

11,7M
2,3M
5,0.10–3 M
2,0.10–12 M

5.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Nồng độ ion OH– của dung dịch khi pH = 5 là

10–5 M
10–9 M
10–14 M
10–1 M

6.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

pH của dung dịch có [H+] = 4,2×10−10 M là

3,98
9,38
8,39
5,89

7.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

pH của dung dịch có [OH−] = 4,0×10−11 M là

6,3
10,4
3,6
4,1

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