[100+] Prefixes MCQs with Explanation Class 9 Physics

Prefixes are essential components of the metric system, indicating multiples or fractions of base units. Understanding prefixes is crucial for working with measurements efficiently. These multiple-choice questions will challenge your knowledge of common prefixes used in the metric system.

Which prefix represents the factor of $10^{-9}$ ?
A) Nano
B) Pico
C) Micro
D) Femto
Correct Option: A
Explanation: The prefix “nano” represents the factor of $10^{-9}$ .
The symbol “n” represents which prefix?
A) Nano
B) Pico
C) Micro
D) Femto
Correct Option: A
Explanation: The symbol “n” represents the prefix “nano”.
Convert $0.003$ kilometers to meters.
A) $0.3$ m
B) $3$ m
C) $30$ m
D) $300$ m
Correct Option: D
Explanation: To convert kilometers to meters, we multiply by $1000$ . So, $0.003$ kilometers $= 0.003 \times 1000 = 3$ meters.
What is the prefix for $10^{-12}$ ?
A) Pico
B) Nano
C) Micro
D) Femto
Correct Option: D
Explanation: The prefix for $10^{-12}$ is “femto”.
How many nanometers are there in one meter?
A) $10^6$
B) $10^9$
C) $10^{12}$
D) $10^{-9}$
Correct Option: B
Explanation: There are $10^9$ nanometers in one meter.
Convert $1500$ millimeters to meters.
A) $1.5$ m
B) $15$ m
C) $150$ m
D) $1500$ m
Correct Option: A
Explanation: To convert millimeters to meters, we divide by $1000$ . So, $1500$ millimeters $= \frac{1500}{1000} = 1.5$ meters.
The prefix “deca” represents which factor?
A) $10^{-2}$
B) $10^2$
C) $10^{-3}$
D) $10^3$
Correct Option: B
Explanation: The prefix “deca” represents the factor of $10^2$ .
What is the prefix for $10^{-15}$ ?
A) Pico
B) Nano
C) Femto
D) Atto
Correct Option: D
Explanation: The prefix for $10^{-15}$ is “atto”.
The symbol “a” represents which prefix?
A) Pico
B) Nano
C) Femto
D) Atto
Correct Option: D
Explanation: The symbol “a” represents the prefix “atto”.
Convert $0.025$ kilometers to meters.
A) $25$ m
B) $2.5$ m
C) $250$ m
D) $2500$ m
Correct Option: C
Explanation: To convert kilometers to meters, we multiply by $1000$ . So, $0.025$ kilometers $= 0.025 \times 1000 = 25$ meters.
What is the prefix for $10^{15}$ ?
A) Peta
B) Tera
C) Giga
D) Exa
Correct Option: D
Explanation: The prefix for $10^{15}$ is “exa”.
How many femtometers are there in one meter?
A) $10^6$
B) $10^9$
C) $10^{12}$
D) $10^{15}$
Correct Option: D
Explanation: There are $10^{15}$ femtometers in one meter.
Convert $3000$ millimeters to meters.
A) $0.3$ m
B) $3$ m
C) $30$ m
D) $300$ m
Correct Option: B
Explanation: To convert millimeters to meters, we divide by $1000$ . So, $3000$ millimeters $= \frac{3000}{1000} = 3$ meters.
The prefix “hecto” represents which factor?
A) $10^{-2}$
B) $10^2$
C) $10^{-3}$
D) $10^3$
Correct Option: B
Explanation: The prefix “hecto” represents the factor of $10^2$ .
What is the prefix for $10^{18}$ ?
A) Peta
B) Tera
C) Giga
D) Exa
Correct Option: D
Explanation: The prefix for $10^{18}$ is “exa”.
The symbol “E” represents which prefix?
A) Peta
B) Tera
C) Giga
D) Exa
Correct Option: D
Explanation: The symbol “E” represents the prefix “exa”.
Convert $0.15$ kilometers to meters.
A) $150$ m
B) $15$ m
C) $1500$ m
D) $0.015$ m
Correct Option: C
Explanation: To convert kilometers to meters, we multiply by $1000$ . So, $0.15$ kilometers $= 0.15 \times 1000 = 1500$ meters.
What is the prefix for $10^{21}$ ?
A) Peta
B) Tera
C) Giga
D) Zetta
Correct Option: D
Explanation: The prefix for $10^{21}$ is “zetta”.
How many attometers are there in one meter?
A) $10^6$
B) $10^9$
C) $10^{12}$
D) $10^{18}$
Correct Option: D
Explanation: There are $10^{18}$ attometers in one meter.
Convert $7000$ millimeters to meters.
A) $0.7$ m
B) $7$ m
C) $70$ m
D) $700$ m
Correct Option: B
Explanation: To convert millimeters to meters, we divide by $1000$ . So, $7000$ millimeters $= \frac{7000}{1000} = 7$ meters.
The prefix “deci” represents which factor?
A) $10^{-2}$
B) $10^2$
C) $10^{-3}$
D) $10^3$
Correct Option: A
Explanation: The prefix “deci” represents the factor of $10^{-2}$ .

What is the prefix for $10^{24}$ ?
A) Peta
B) Tera
C) Giga
D) Yotta
Correct Option: D
Explanation: The prefix for $10^{24}$ is “yotta”.
The symbol “Y” represents which prefix?
A) Peta
B) Tera
C) Giga
D) Yotta
Correct Option: D
Explanation: The symbol “Y” represents the prefix “yotta”.
Convert $0.03$ kilometers to meters.
A) $3$ m
B) $30$ m
C) $300$ m
D) $3000$ m
Correct Option: C
Explanation: To convert kilometers to meters, we multiply by $1000$ . So, $0.03$ kilometers $= 0.03 \times 1000 = 300$ meters.
What is the prefix for $10^{27}$ ?
A) Peta
B) Tera
C) Giga
D) Bronto
Correct Option: D
Explanation: The prefix for $10^{27}$ is “bronto”.
How many zeptometers are there in one meter?
A) $10^6$
B) $10^9$
C) $10^{12}$
D) $10^{15}$
Correct Option: D
Explanation: There are $10^{15}$ zeptometers in one meter.
Convert $8500$ millimeters to meters.
A) $8.5$ m
B) $85$ m
C) $850$ m
D) $8500$ m
Correct Option: A
Explanation: To convert millimeters to meters, we divide by $1000$ . So, $8500$ millimeters $= \frac{8500}{1000} = 8.5$ meters.
The prefix “kilo” represents which factor?
A) $10^{-2}$
B) $10^2$
C) $10^{-3}$
D) $10^3$
Correct Option: D
Explanation: The prefix “kilo” represents the factor of $10^3$ .
What is the prefix for $10^{30}$ ?
A) Peta
B) Tera
C) Giga
D) Geonto
Correct Option: D
Explanation: The prefix for $10^{30}$ is “geonto”.
The symbol “G” represents which prefix?
A) Peta
B) Tera
C) Giga
D) Geonto
Correct Option: C
Explanation: The symbol “G” represents the prefix “giga”.
Convert $0.06$ kilometers to meters.
A) $60$ m
B) $600$ m
C) $6000$ m
D) $0.006$ m
Correct Option: B
Explanation: To convert kilometers to meters, we multiply by $1000$ . So, $0.06$ kilometers $= 0.06 \times 1000 = 600$ meters.
What is the prefix for $10^{33}$ ?
A) Peta
B) Tera
C) Giga
D) Hella
Correct Option: D
Explanation: The prefix for $10^{33}$ is “hella”.
How many yoctometers are there in one meter?
A) $10^6$
B) $10^9$
C) $10^{12}$
D) $10^{24}$
Correct Option: D
Explanation: There are $10^{24}$ yoctometers in one meter.
Convert $9200$ millimeters to meters.
A) $9.2$ m
B) $92$ m
C) $920$ m
D) $9200$ m
Correct Option: B
Explanation: To convert millimeters to meters, we divide by $1000$ . So, $9200$ millimeters $= \frac{9200}{1000} = 92$ meters.
The prefix “deca” represents which factor?
A) $10^{-2}$
B) $10^2$
C) $10^{-3}$
D) $10^3$
Correct Option: B
Explanation: The prefix “deca” represents the factor of $10^2$ .
What is the prefix for $10^{36}$ ?
A) Peta
B) Tera
C) Giga
D) Doggol
Correct Option: D
Explanation: The prefix for $10^{36}$ is “doggol”.
The symbol “D” represents which prefix?
A) Peta
B) Tera
C) Giga
D) Doggol
Correct Option: D
Explanation: The symbol “D” represents the prefix “doggol”.
Convert $0.07$ kilometers to meters.
A) $70$ m
B) $700$ m
C) $7000$ m
D) $0.007$ m
Correct Option: B
Explanation: To convert kilometers to meters, we multiply by $1000$ . So, $0.07$ kilometers $= 0.07 \times 1000 = 700$ meters.
What is the prefix for $10^{39}$ ?
A) Peta
B) Tera
C) Giga
D) Wottol
Correct Option: D
Explanation: The prefix for $10^{39}$ is “wottol”.
How many zeptometers are there in one meter?
A) $10^6$
B) $10^9$
C) $10^{12}$
D) $10^{21}$
Correct Option: C
Explanation: There are $10^{12}$ zeptometers in one meter.
Convert $7600$ millimeters to meters.
A) $7.6$ m
B) $76$ m
C) $760$ m
D) $7600$ m
Correct Option: B
Explanation: To convert millimeters to meters, we divide by $1000$ . So, $7600$ millimeters $= \frac{7600}{1000} = 76$ meters.
The prefix “hecto” represents which factor?
A) $10^{-2}$
B) $10^{2}$
C) $10^{-3}$
D) $10^{3}$
Correct Option: B
Explanation: The prefix “hecto” represents the factor of $10^2$ .

What is the prefix for $10^{42}$ ?
A) Peta
B) Tera
C) Giga
D) Vinnol
Correct Option: D
Explanation: The prefix for $10^{42}$ is “vinnol”.
The symbol “V” represents which prefix?
A) Peta
B) Tera
C) Giga
D) Vinnol
Correct Option: D
Explanation: The symbol “V” represents the prefix “vinnol”.
Convert $0.09$ kilometers to meters.
A) $90$ m
B) $900$ m
C) $9000$ m
D) $0.009$ m
Correct Option: B
Explanation: To convert kilometers to meters, we multiply by $1000$ . So, $0.09$ kilometers $= 0.09 \times 1000 = 900$ meters.
What is the prefix for $10^{45}$ ?
A) Peta
B) Tera
C) Giga
D) Zotol
Correct Option: D
Explanation: The prefix for $10^{45}$ is “zotol”.
How many yoctometers are there in one meter?
A) $10^6$
B) $10^9$
C) $10^{12}$
D) $10^{24}$
Correct Option: D
Explanation: There are $10^{24}$ yoctometers in one meter.
Convert $5800$ millimeters to meters.
A) $5.8$ m
B) $58$ m
C) $580$ m
D) $5800$ m
Correct Option: B
Explanation: To convert millimeters to meters, we divide by $1000$ . So, $5800$ millimeters $= \frac{5800}{1000} = 58$ meters.
The prefix “deci” represents which factor?
A) $10^{-2}$
B) $10^2$
C) $10^{-3}$
D) $10^3$
Correct Option: A
Explanation: The prefix “deci” represents the factor of $10^{-2}$ .
What is the prefix for $10^{48}$ ?
A) Peta
B) Tera
C) Giga
D) Quintol
Correct Option: D
Explanation: The prefix for $10^{48}$ is “quintol”.
The symbol “Q” represents which prefix?
A) Peta
B) Tera
C) Giga
D) Quintol
Correct Option: D
Explanation: The symbol “Q” represents the prefix “quintol”.
Convert $0.14$ kilometers to meters.
A) $140$ m
B) $1400$ m
C) $14000$ m
D) $0.014$ m
Correct Option: B
Explanation: To convert kilometers to meters, we multiply by $1000$ . So, $0.14$ kilometers $= 0.14 \times 1000 = 1400$ meters.
What is the prefix for $10^{51}$ ?
A) Peta
B) Tera
C) Giga
D) Siscol
Correct Option: D
Explanation: The prefix for $10^{51}$ is “siscol”.
How many zeptometers are there in one meter?
A) $10^6$
B) $10^9$
C) $10^{12}$
D) $10^{21}$
Correct Option: C
Explanation: There are $10^{12}$ zeptometers in one meter.
Convert $4200$ millimeters to meters.
A) $4.2$ m
B) $42$ m
C) $420$ m
D) $4200$ m
Correct Option: B
Explanation: To convert millimeters to meters, we divide by $1000$ . So, $4200$ millimeters $= \frac{4200}{1000} = 42$ meters.
The prefix “hecto” represents which factor?
A) $10^{-2}$
B) $10^2$
C) $10^{-3}$
D) $10^3$
Correct Option: B
Explanation: The prefix “hecto” represents the factor of $10^2$ .
What is the prefix for $10^{54}$ ?
A) Peta
B) Tera
C) Giga
D) Setol
Correct Option: D
Explanation: The prefix for $10^{54}$ is “setol”.
The symbol “S” represents which prefix?
A) Peta
B) Tera
C) Giga
D) Setol
Correct Option: D
Explanation: The symbol “S” represents the prefix “setol”.
Convert $0.16$ kilometers to meters.
A) $160$ m
B) $1600$ m
C) $16000$ m
D) $0.016$ m
Correct Option: B
Explanation: To convert kilometers to meters, we multiply by $1000$ . So, $0.16$ kilometers $= 0.16 \times 1000 = 1600$ meters.
What is the prefix for $10^{57}$ ?
A) Peta
B) Tera
C) Giga
D) Sextol
Correct Option: D
Explanation: The prefix for $10^{57}$ is “sextol”.
How many yoctometers are there in one meter?
A) $10^6$
B) $10^9$
C) $10^{12}$
D) $10^{24}$
Correct Option: D
Explanation: There are $10^{24}$ yoctometers in one meter.
Convert $3500$ millimeters to meters.
A) $3.5$ m
B) $35$ m
C) $350$ m
D) $3500$ m
Correct Option: B
Explanation: To convert millimeters to meters, we divide by $1000$ . So, $3500$ millimeters $= \frac{3500}{1000} = 35$ meters.

The prefix “deci” represents which factor?
A) $10^{-2}$
B) $10^2$
C) $10^{-3}$
D) $10^3$
Correct Option: A
Explanation: The prefix “deci” represents the factor of $10^{-2}$ .
What is the prefix for $10^{60}$ ?
A) Peta
B) Tera
C) Giga
D) Sevitol
Correct Option: D
Explanation: The prefix for $10^{60}$ is “sevitol”.
The symbol “Se” represents which prefix?
A) Peta
B) Tera
C) Giga
D) Sevitol
Correct Option: D
Explanation: The symbol “Se” represents the prefix “sevitol”.
Convert $0.19$ kilometers to meters.
A) $190$ m
B) $1900$ m
C) $19000$ m
D) $0.019$ m
Correct Option: B
Explanation: To convert kilometers to meters, we multiply by $1000$ . So, $0.19$ kilometers $= 0.19 \times 1000 = 1900$ meters.
What is the prefix for $10^{63}$ ?
A) Peta
B) Tera
C) Giga
D) Octotol
Correct Option: D
Explanation: The prefix for $10^{63}$ is “octotol”.
How many zeptometers are there in one meter?
A) $10^6$
B) $10^9$
C) $10^{12}$
D) $10^{21}$
Correct Option: C
Explanation: There are $10^{12}$ zeptometers in one meter.
Convert $2400$ millimeters to meters.
A) $2.4$ m
B) $24$ m
C) $240$ m
D) $2400$ m
Correct Option: B
Explanation: To convert millimeters to meters, we divide by $1000$ . So, $2400$ millimeters $= \frac{2400}{1000} = 24$ meters.
The prefix “hecto” represents which factor?
A) $10^{-2}$
B) $10^2$
C) $10^{-3}$
D) $10^3$
Correct Option: B
Explanation: The prefix “hecto” represents the factor of $10^2$ .
What is the prefix for $10^{66}$ ?
A) Peta
B) Tera
C) Giga
D) Nonatol
Correct Option: D
Explanation: The prefix for $10^{66}$ is “nonatol”.
The symbol “N” represents which prefix?
A) Peta
B) Tera
C) Giga
D) Nonatol
Correct Option: D
Explanation: The symbol “N” represents the prefix “nonatol”.
Convert $0.25$ kilometers to meters.
A) $250$ m
B) $2500$ m
C) $25000$ m
D) $0.025$ m
Correct Option: B
Explanation: To convert kilometers to meters, we multiply by $1000$ . So, $0.25$ kilometers $= 0.25 \times 1000 = 2500$ meters.
What is the prefix for $10^{69}$ ?
A) Peta
B) Tera
C) Giga
D) Decotol
Correct Option: D
Explanation: The prefix for $10^{69}$ is “decotol”.
How many yoctometers are there in one meter?
A) $10^6$
B) $10^9$
C) $10^{12}$
D) $10^{24}$
Correct Option: D
Explanation: There are $10^{24}$ yoctometers in one meter.
Convert $3100$ millimeters to meters.
A) $3.1$ m
B) $31$ m
C) $310$ m
D) $3100$ m
Correct Option: B
Explanation: To convert millimeters to meters, we divide by $1000$ . So, $3100$ millimeters $= \frac{3100}{1000} = 31$ meters.
The prefix “deci” represents which factor?
A) $10^{-2}$
B) $10^2$
C) $10^{-3}$
D) $10^3$
Correct Option: A
Explanation: The prefix “deci” represents the factor of $10^{-2}$ .
What is the prefix for $10^{72}$ ?
A) Peta
B) Tera
C) Giga
D) Hextol
Correct Option: D
Explanation: The prefix for $10^{72}$ is “hextol”.
The symbol “H” represents which prefix?
A) Peta
B) Tera
C) Giga
D) Hextol
Correct Option: D
Explanation: The symbol “H” represents the prefix “hextol”.
Convert $0.32$ kilometers to meters.
A) $320$ m
B) $3200$ m
C) $32000$ m
D) $0.032$ m
Correct Option: B
Explanation: To convert kilometers to meters, we multiply by $1000$ . So, $0.32$ kilometers $= 0.32 \times 1000 = 3200$ meters.
What is the prefix for $10^{75}$ ?
A) Peta
B) Tera
C) Giga
D) Septotol
Correct Option: D
Explanation: The prefix for $10^{75}$ is “septotol”.
How many zeptometers are there in one meter?
A) $10^6$
B) $10^9$
C) $10^{12}$
D) $10^{21}$
Correct Option: C
Explanation: There are $10^{12}$ zeptometers in one meter.
Convert $2800$ millimeters to meters.
A) $2.8$ m
B) $28$ m
C) $280$ m
D) $2800$ m
Correct Option: B
Explanation: To convert millimeters to meters, we divide by $1000$ . So, $2800$ millimeters $= \frac{2800}{1000} = 28$ meters.
The prefix “hecto” represents which factor?
A) $10^{-2}$
B) $10^2$
C) $10^{-3}$
D) $10^3$
Correct Option: B
Explanation: The prefix “hecto” represents the factor of $10^2$ .
What is the prefix for $10^{78}$ ?
A) Peta
B) Tera
C) Giga
D) Octotol
Correct Option: D
Explanation: The prefix for $10^{78}$ is “octotol”.
The symbol “O” represents which prefix?
A) Peta
B) Tera
C) Giga
D) Octotol
Correct Option: D
Explanation: The symbol “O” represents the prefix “octotol”.
Convert $0.35$ kilometers to meters.
A) $350$ m
B) $3500$ m
C) $35000$ m
D) $0.035$ m
Correct Option: B
Explanation: To convert kilometers to meters, we multiply by $1000$ . So, $0.35$ kilometers $= 0.35 \times 1000 = 3500$ meters.
What is the prefix for $10^{81}$ ?
A) Peta
B) Tera
C) Giga
D) Nonatol
Correct Option: D
Explanation: The prefix for $10^{81}$ is “nonatol”.
How many yoctometers are there in one meter?
A) $10^6$
B) $10^9$
C) $10^{12}$
D) $10^{24}$
Correct Option: D
Explanation: There are $10^{24}$ yoctometers in one meter.
Convert $4400$ millimeters to meters.
A) $4.4$ m
B) $44$ m
C) $440$ m
D) $4400$ m
Correct Option: B
Explanation: To convert millimeters to meters, we divide by $1000$ . So, $4400$ millimeters $= \frac{4400}{1000} = 44$ meters.
The prefix “deci” represents which factor?
A) $10^{-2}$
B) $10^2$
C) $10^{-3}$
D) $10^3$
Correct Option: A
Explanation: The prefix “deci” represents the factor of $10^{-2}$ .
What is the prefix for $10^{84}$ ?
A) Peta
B) Tera
C) Giga
D) Decatol
Correct Option: D
Explanation: The prefix for $10^{84}$ is “decatol”.
The symbol “Dc” represents which prefix?
A) Peta
B) Tera
C) Giga
D) Decatol
Correct Option: D
Explanation: The symbol “Dc” represents the prefix “decatol”.
Convert $0.45$ kilometers to meters.
A) $450$ m
B) $4500$ m
C) $45000$ m
D) $0.045$ m
Correct Option: B
Explanation: To convert kilometers to meters, we multiply by $1000$ . So, $0.45$ kilometers $= 0.45 \times 1000 = 4500$ meters.
What is the prefix for $10^{87}$ ?
A) Peta
B) Tera
C) Giga
D) Undecatol
Correct Option: D
Explanation: The prefix for $10^{87}$ is “undecatol”.
How many zeptometers are there in one meter?
A) $10^6$
B) $10^9$
C) $10^{12}$
D) $10^{21}$
Correct Option: C
Explanation: There are $10^{12}$ zeptometers in one meter.
Convert $4800$ millimeters to meters.
A) $4.8$ m
B) $48$ m
C) $480$ m
D) $4800$ m
Correct Option: B
Explanation: To convert millimeters to meters, we divide by $1000$ . So, $4800$ millimeters $= \frac{4800}{1000} = 48$ meters.
What is the prefix for $10^{90}$ ?
A) Peta
B) Tera
C) Giga
D) Dodecatol
Correct Option: D
Explanation: The prefix for $10^{90}$ is “dodecatol”.
The symbol “Dd” represents which prefix?
A) Peta
B) Tera
C) Giga
D) Dodecatol
Correct Option: D
Explanation: The symbol “Dd” represents the prefix “dodecatol”.
Convert $0.50$ kilometers to meters.
A) $500$ m
B) $5000$ m
C) $50000$ m
D) $0.050$ m
Correct Option: B
Explanation: To convert kilometers to meters, we multiply by $1000$ . So, $0.50$ kilometers $= 0.50 \times 1000 = 5000$ meters.
What is the prefix for $10^{93}$ ?
A) Peta
B) Tera
C) Giga
D) Tridecatol
Correct Option: D
Explanation: The prefix for $10^{93}$ is “tridecatol”.
How many yoctometers are there in one meter?
A) $10^6$
B) $10^9$
C) $10^{12}$
D) $10^{24}$
Correct Option: D
Explanation: There are $10^{24}$ yoctometers in one meter.
Convert $5200$ millimeters to meters.
A) $5.2$ m
B) $52$ m
C) $520$ m
D) $5200$ m
Correct Option: B
Explanation: To convert millimeters to meters, we divide by $1000$ . So, $5200$ millimeters $= \frac{5200}{1000} = 52$ meters.
The prefix “hecto” represents which factor?
A) $10^{-2}$
B) $10^2$
C) $10^{-3}$
D) $10^3$
Correct Option: B
Explanation: The prefix “hecto” represents the factor of $10^2$ .
What is the prefix for $10^{96}$ ?
A) Peta
B) Tera
C) Giga
D) Tetradecatol
Correct Option: D
Explanation: The prefix for $10^{96}$ is “tetradecatol”.
The symbol “Td” represents which prefix?
A) Peta
B) Tera
C) Giga
D) Tetradecatol
Correct Option: D
Explanation: The symbol “Td” represents the prefix “tetradecatol”.
Convert $0.60$ kilometers to meters.
A) $600$ m
B) $6000$ m
C) $60000$ m
D) $0.060$ m
Correct Option: B
Explanation: To convert kilometers to meters, we multiply by $1000$ . So, $0.60$ kilometers $= 0.60 \times 1000 = 6000$ meters.

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