Question 1

Which of the following is the correct SI base unit and symbol for measuring temperature?

Accepted Answer

Kelvin (K)

Question 2

A laboratory experiment requires you to measure the force applied to a sample. Which SI derived unit and its base unit expression should you use?

Accepted Answer

Newton ($$\mathrm{kg\ m\ s$$^{-2}$$})$$

Question 3

Which SI base unit is used to express the amount of substance, and what is its symbol?

Accepted Answer

Mole (mol)

Question 4

A student calculates the pressure exerted by a gas in a container. Which SI derived unit and its base unit expression should be used for pressure?

Accepted Answer

Pascal ($$\mathrm{kg\ m$$^{-1}$$\ s$$^{-2}$$})$$

Question 5

Which SI base unit is used to measure luminous intensity?

Accepted Answer

Candela (cd)

Question 6

If a device consumes energy at a rate of 1 joule per second, what is the SI derived unit for power?

Accepted Answer

Watt ($$\mathrm{kg\ m^2$\ s$$^{-3}$$})$$

Question 7

Which of the following correctly matches the SI base unit for electric current and its symbol?

Accepted Answer

Ampere (A)

Question 8

A chemist needs to calculate the electrical charge transferred in a reaction. Which SI derived unit and its base unit expression should be used?

Accepted Answer

Coulomb ($$\mathrm{A\ s})$$

Question 9

Which SI derived unit is used to measure electrical potential, and what is its base unit expression?

Accepted Answer

Volt ($$\mathrm{kg\ m^2$\ s$$^{-3}$$\ A$$^{-1}$$})$$

Question 10

A resistor in a circuit has a resistance of 5 ohms. What is the SI base unit expression for ohm?

Accepted Answer

$$\mathrm{kg\ m^2$\ s$$^{-3}$$\ A$$^{-2}$$}$$

Question 11

Which SI base unit is used to measure mass?

Accepted Answer

Kilogram (kg)

Question 12

A scientist is measuring the length of a sample. Which SI base unit and symbol should be used?

Accepted Answer

Meter (m)

Question 13

Which of the following SI derived units is correctly matched with its physical quantity?

Accepted Answer

Joule – Energy, work, quantity of heat

Question 14

A reaction produces 10 joules of energy. What is the SI base unit expression for joule?

Accepted Answer

$$\mathrm{kg\ m^2$\ s$$^{-2}$$}$$

Question 15

Which SI base unit is used to measure time?

Accepted Answer

Second (s)

Question 16

A student is asked to convert 1 newton into SI base units. Which of the following is correct?

Accepted Answer

$$\mathrm{kg\ m\ s$$^{-2}$$}$$

Question 17

Which SI base unit is used to measure the intensity of light?

Accepted Answer

Candela (cd)

Question 18

A voltmeter measures the potential difference across a battery. What is the SI base unit expression for volt?

Accepted Answer

$$\mathrm{kg\ m^2$\ s$$^{-3}$$\ A$$^{-1}$$}$$

Question 19

Which of the following is NOT an SI base unit?

Accepted Answer

Joule (J)

Question 20

A chemist needs to measure the amount of substance in a reaction. Which SI base unit should be used?

Accepted Answer

Mole (mol)

SI Base and Derived Units in Analytical Chemistry

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