Question

is no
ustest
on
Exercise 2.2
1 For what values of natural number n, 4" can end with the digitor
2 IT, nare natural numbers, for what values of m, does 2 x5 ends in
3. Find the HCF of 252525 and 363636.
4. IF 13824 = 2 x 3 then find a and b.
5. If " xp xp xp = 113400 where p... PP, are primes in ascen
are integers, find the value of P.P.PP. and
6. Find the LCM and HCF of 408 and 170 by applying the fundamental theorens
2
arithmetic.
7. Find the greatest number consisting of 6 digits which is exactly divisible by 24,15,369
8. What is the smallest number that when divided by thre
mantest number that when divided by three numbers such as 35, 56 ans
91 leaves remainder 7 in each case?
9. Find the least number that is divisible by the first ten natural numbers.
Then
2.5 Modular Arithmetic
ers
In a clock, we use the numbers 1 to 12 to represent the time
period of 24 hours. How is it possible to represent the 24 hours of
a day in a 12 number format? We use 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,
12 and after 12, we use 1 instead of 13 and 2 instead of 14 and so
on. That is after 12 we again start from 1, 2, 3.... In this system the
d 1 to 19 This type of wrapping around after​

Answer 1

Answer:

How to remove impurities from diethyl ether?

Plz tell me the easy way for the purification of diethyl ether. Usual impurities of Diethyl ether are water, EtOH, diethyl peroxide (which is explosive when concentrated), and aldehydes.