# Scientific Measurements and Units MCQs with Answers

Which of the following is the SI unit for measuring length?

a) Meter

b) Kilogram

c) Second

d) Ampere

**Answer: **a) Meter

What is the SI unit for measuring time?

a) Meter

b) Kilogram

c) Second

d) Ampere

**Answer: **c) Second

Which of the following is the SI unit for measuring mass?

a) Meter

b) Kilogram

c) Second

d) Ampere

**Answer: **b) Kilogram

What is the SI unit for measuring electric current?

a) Meter

b) Kilogram

c) Second

d) Ampere

**Answer: **d) Ampere

Which of the following is the correct symbol for the SI unit “kilometer”?

a) km

b) m

c) kg

d) s

**Answer: **a) km

The prefix “milli-” represents which factor?

a) 10^3

b) 10^-3

c) 10^6

d) 10^-6

**Answer: **b) 10^-3

The prefix “kilo-” represents which factor?

a) 10^3

b) 10^-3

c) 10^6

d) 10^-6

**Answer: **a) 10^3

Which of the following is the correct symbol for the unit “millisecond”?

a) ks

b) ms

c) µs

d) ns

**Answer: **b) ms

The prefix “micro-” represents which factor?

a) 10^3

b) 10^-3

c) 10^6

d) 10^-6

**Answer: **d) 10^-6

The prefix “mega-” represents which factor?

a) 10^3

b) 10^-3

c) 10^6

d) 10^-6

**Answer: **c) 10^6

Which of the following is the correct symbol for the unit “microgram”?

a) kg

b) mg

c) µg

d) ng

**Answer: **c) µg

What is the SI unit for measuring temperature?

a) Kelvin

b) Celsius

c) Fahrenheit

d) Rankine

**Answer: **a) Kelvin

Which of the following is the correct symbol for the SI unit “centimeter”?

a) cm

b) m

c) km

d) mm

**Answer: **a) cm

The prefix “deci-” represents which factor?

a) 10^3

b) 10^-3

c) 10^6

d) 10^-6

**Answer: **b) 10^-3

The prefix “nano-” represents which factor?

a) 10^3

b) 10^-3

c) 10^6

d) 10^-9

**Answer: **d) 10^-9

The prefix “giga-” represents which factor?

a) 10^3

b) 10^-3

c) 10^9

d) 10^-9

**Answer: **c) 10^9

What is the SI unit for measuring electric charge?

a) Coulomb

b) Ampere

c) Ohm

d) Volt

**Answer: **a) Coulomb

The prefix “pico-” represents which factor?

a) 10^3

b) 10^-3

c) 10^12

d) 10^-12

**Answer: **d) 10^-12

The prefix “tera-” represents which factor?

a) 10^3

b) 10^-3

c) 10^12

d) 10^-12

**Answer: **c) 10^12

The prefix “femto-” represents which factor?

a) 10^3

b) 10^-3

c) 10^15

d) 10^-15

**Answer: **d) 10^-15

What is the SI unit for measuring frequency?

a) Hertz

b) Watt

c) Ohm

d) Newton

**Answer: **a) Hertz

The prefix “exa-” represents which factor?

a) 10^3

b) 10^-3

c) 10^18

d) 10^-18

**Answer: **c) 10^18

The prefix “atto-” represents which factor?

a) 10^3

b) 10^-3

c) 10^18

d) 10^-18

**Answer: **d) 10^-18

What is the SI unit for measuring force?

a) Newton

b) Joule

c) Pascal

d) Watt

**Answer: **a) Newton

The prefix “zetta-” represents which factor?

a) 10^3

b) 10^-3

c) 10^21

d) 10^-21

**Answer: **c) 10^21

The prefix “zepto-” represents which factor?

a) 10^3

b) 10^-3

c) 10^21

d) 10^-21

**Answer: **d) 10^-21

What is the SI unit for measuring energy?

a) Joule

b) Watt

c) Volt

d) Coulomb

**Answer: **a) Joule

The prefix “yotta-” represents which factor?

a) 10^3

b) 10^-3

c) 10^24

d) 10^-24

**Answer: **c) 10^24

The prefix “yocto-” represents which factor?

a) 10^3

b) 10^-3

c) 10^24

d) 10^-24

**Answer: **d) 10^-24

What is the SI unit for measuring pressure?

a) Pascal

b) Ohm

c) Hertz

d) Coulomb

**Answer: **a) Pascal

The prefix “zebi-” represents which factor?

a) 2^10

b) 2^-10

c) 2^20

d) 2^-20

**Answer: **b) 2^-10

The prefix “yobi-” represents which factor?

a) 2^10

b) 2^-10

c) 2^20

d) 2^-20

**Answer: **c) 2^20

What is the SI unit for measuring power?

a) Watt

b) Joule

c) Ampere

d) Volt

**Answer: **a) Watt

The prefix “kibi-” represents which factor?

a) 2^10

b) 2^-10

c) 2^20

d) 2^-20

**Answer: **a) 2^10

The prefix “mebi-” represents which factor?

a) 2^10

b) 2^-10

c) 2^20

d) 2^-20

**Answer: **c) 2^20

What is the SI unit for measuring electric resistance?

a) Ohm

b) Ampere

c) Volt

d) Coulomb

**Answer: **a) Ohm

The prefix “gibi-” represents which factor?

a) 2^10

b) 2^-10

c) 2^30

d) 2^-30

**Answer: **c) 2^30

The prefix “tebi-” represents which factor?

a) 2^10

b) 2^-10

c) 2^30

d) 2^-30

**Answer: **b) 2^-10

What is the SI unit for measuring electric voltage?

a) Volt

b) Ampere

c) Ohm

d) Coulomb

**Answer: **a) Volt

The prefix “pebi-” represents which factor?

a) 2^10

b) 2^-10

c) 2^50

d) 2^-50

**Answer: **c) 2^50

The prefix “exbi-” represents which factor?

a) 2^10

b) 2^-10

c) 2^60

d) 2^-60

**Answer: **c) 2^60

What is the SI unit for measuring electric capacitance?

a) Farad

b) Ampere

c) Ohm

d) Volt

**Answer: **a) Farad

The prefix “zepto-” represents which factor?

a) 10^3

b) 10^-3

c) 10^21

d) 10^-21

**Answer: **d) 10^-21

The prefix “zepto-” represents which factor?

a) 10^3

b) 10^-3

c) 10^21

d) 10^-21

**Answer: **d) 10^-21

What is the SI unit for measuring electric conductance?

a) Siemens

b) Ampere

c) Ohm

d) Volt

**Answer: **a) Siemens

The prefix “yotta-” represents which factor?

a) 10^3

b) 10^-3

c) 10^24

d) 10^-24

**Answer: **c) 10^24

The prefix “yocto-” represents which factor?

a) 10^3

b) 10^-3

c) 10^24

d) 10^-24

**Answer: **d) 10^-24

What is the SI unit for measuring electric potential difference?

a) Volt

b) Ampere

c) Ohm

d) Coulomb

**Answer: **a) Volt

The prefix “kilo-” represents which factor?

a) 10^3

b) 10^-3

c) 10^6

d) 10^-6

**Answer: **a) 10^3

The prefix “milli-” represents which factor?

a) 10^3

b) 10^-3

c) 10^6

d) 10^-6

**Answer: **b) 10^-3

What is the SI unit for measuring electric charge?

a) Coulomb

b) Ampere

c) Ohm

d) Volt

**Answer: **a) Coulomb

The prefix “deca-” represents which factor?

a) 10^3

b) 10^-3

c) 10^6

d) 10^-6

**Answer: **c) 10^6

The prefix “deci-” represents which factor?

a) 10^3

b) 10^-3

c) 10^6

d) 10^-6

**Answer: **b) 10^-3

What is the SI unit for measuring electric current?

a) Ampere

b) Coulomb

c) Ohm

d) Volt

**Answer: **a) Ampere

The prefix “mega-” represents which factor?

a) 10^3

b) 10^-3

c) 10^6

d) 10^-6

**Answer: **c) 10^6

The prefix “micro-” represents which factor?

a) 10^3

b) 10^-3

c) 10^6

d) 10^-6

**Answer: **d) 10^-6

What is the SI unit for measuring temperature?

a) Kelvin

b) Celsius

c) Fahrenheit

d) Rankine

**Answer: **a) Kelvin

The prefix “nano-” represents which factor?

a) 10^3

b) 10^-3

c) 10^6

d) 10^-9

**Answer: **d) 10^-9

The prefix “peta-” represents which factor?

a) 10^3

b) 10^-3

c) 10^15

d) 10^-15

**Answer: **c) 10^15

What is the SI unit for measuring frequency?

a) Hertz

b) Watt

c) Ohm

d) Newton

**Answer: **a) Hertz