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unit 3

Authored by Nguyễn Hà

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unit 3
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21 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the meaning of liberate in electrochemistry?

To release a substance during a reaction (Giải phóng một chất trong phản ứng)

To store energy

To conduct electricity

To increase voltage

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Từ "alloy" trong kỹ thuật điện nghĩa là gì?

Hợp kim - hỗn hợp kim loại hoặc kim loại với chất khác

Điện áp

Dung lượng pin

Điện trở

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of these best defines capacity (dung lượng) of a battery?

Maximum electric charge the battery can store (Dung lượng tối đa pin có thể chứa)

Voltage of the battery

Physical size of battery

Current flow rate

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is carcinogenicity?

The ability to cause cancer (Tính gây ung thư)

Electrical conductivity

Battery life

Magnetic property

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Điện thoại không dây (cordless phone) truyền tín hiệu bằng cách nào?

Qua sóng radio kết nối trạm gốc (base station)

Qua dây cáp

Qua hồng ngoại

Qua Bluetooth

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens in deposit during electroplating?

Metal ions settle on a surface to form a coating (Kim loại lắng đọng trên bề mặt tạo lớp phủ)

Battery discharges

Current increases

Voltage drops

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Explain what dissociate means.

To separate into smaller ions or parts (Phân ly thành các ion nhỏ hơn)

To combine with another substance

To form solid particles

To conduct electricity

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