Question

Arrange the following multiples in decreasing order:
(I) Milli
(II) Centi
(III) Nano
(IV) Pico
A. IV, II, I, III
B. II, I, III, IV
C. I, III, II, IV
D, III, IV, I, II

Answer 1

Hint: When the magnitudes of physical quantities are large or small, preference in power of $10$ are used which are given here.

Complete step by step answer:
When the magnitudes are very large as very small, it is convenient to express them in the multiples of the SI units
(I). Milli
It is used to express ${10^{ - 3}}$
(II). Centi – It is used to express ${10^{ - 2}}$
(III). Nano – It is used to express ${10^{ - 9}}$
(IV) Pico – It is used to express ${10^{ - 12}}$
As, ${10^{ - 2}} > {10^{ - 3}} > {10^{ - 9}} > {10^{ - 12}}$
So, centi $ > $Milli $ > $ Nano $ > $Pico
So, the correct decreasing order of multiples will be
(II), (I), (III), (IV)

So, the correct answer is “Option B”.

Additional Information:
The list of various prefixes of powers of $10$ are,

S.NO	Multiple	Prefix	Symbol
1.	${10^1}$	Deca	Da
2.	${10^2}$	Hector	H
3.	${10^3}$	Kilo	K
4.	${10^6}$	Mega	M
5.	${10^9}$	Giga	G
6.	${10^{12}}$	Tera	T
7.	${10^{15}}$	Peta	P
8.	${10^{18}}$	Exa	E
9.	${10^{ - 1}}$	Deci	D
10.	${10^{ - 2}}$	Centi	C
11.	${10^{ - 3}}$	Milli	M
12.	${10^{ - 6}}$	Micro	$\mu $
13.	${10^{ - 9}}$	Nano	N
14.	${10^{ - 12}}$	Pico	P
15.	${10^{ - 15}}$	Femto	F
16.	${10^{ - 18}}$	Atto	A

Note:
Remember that in negative power, as the negative power increases, the value decreases.
So, the correct order there is
(II), (I), (III), (IV)
Not (IV), (III), (I), (II).