Prefix & SI Units

Which of the following belongs to the standard form of Mega?

• 10⁶

• 10⁹

• 10^-6

• 10^-3

Answer explanation

The standard form of Mega is 10^6, which is the first option given in the answer choices.

Which of the following belongs to the standard form of deci?

• 10²

• 10^-1

• 10^-2

• 10³

Answer explanation

The standard form of deci is 10^-1, which is equivalent to 0.1.

What is the value of centi?

• 0.01

• 0.001

• 0.0001

Answer explanation

The value of centi is 0.01 because centi represents one hundredth, which is equivalent to 0.01.

What is the value of micro?

• 0.000001

• 0.000000001

• 1000000

• 0.0001

Answer explanation

The value of micro is 0.000001, as micro represents one millionth (1/1,000,000) which is equivalent to 0.000001.

What is the symbol of Giga?

• Giga

• G

• g

• Gi

Answer explanation

The symbol for Giga is 'G', representing the prefix for one billion in the International System of Units (SI).

Which of the following sequence show the arrangement of prefix in ascending order?

• Giga, Mega, Kilo, deci

• micro, mili,centi, deci

• centi, mili, micro, nano

• Kilo, centi, Mega, milli

Answer explanation

The correct sequence is micro, mili, centi, deci which is arranged in ascending order of prefix values.

What is the SI Unit of length?

• kilometre (km)

• milimetre (mm)

• centimetre (cm)

• Metre (m)

Answer explanation

The SI Unit of length is Metre (m), as it is the base unit for measuring length in the International System of Units (SI).

What is the SI Unit of mass?

• Kilogram (kg)

• gram (g)

Answer explanation

The SI Unit of mass is Kilogram (kg), making it the correct choice among the options provided.

Which of the following has the same value as
3000000 m

Hint: may contains more than 1 correct answer 🤪

• 300 km

• 3000 km

• 3 Mm

• 3 Gm

Answer explanation

The correct choices are 3000 km and 3 Mm. To convert 3000000 m to km, divide by 1000. To convert to Mm, divide by 1000 twice.

Which of the following units are arrange in descending order?

• km, cm, m, mm

• km, m, cm, mm

• mm, cm, m, km

• cm, mm, dm, km

Answer explanation

The correct order is km, m, cm, mm as kilometers are the largest unit and millimeters are the smallest unit.