Question
Which of the following is NOT a
base?Solution
Among the given options, C₂H₅OH (ethanol) is NOT a base. The other substances are bases: KOH- (potassium hydroxide) is a strong base. NH₄OH -(ammonium hydroxide) is a weak base. NaOH- (sodium hydroxide) is a strong base.
- If (a 2 + 1/a 2 ) = 66, then find the value of (a 3 – 1/a 3 ).
If a + b + c = 8, a² + b² + c² = 18 and ab + b c+ ca = 12, then what is the value of a³ + b³ +c³ –3abc?
If (x + y) = 6 and (x2 + y2) = 20, then the value of (x – y)2 is equal to:
If 2x + y = 10 and 3x - 2y = 5, find the value of x + y.
If x + 1/x = 5 then find out the value of x⁵ + 1/(x⁵)?
If (a3+1)/(a+1) = (a3-1)/(a-1) and a ≠ 1, -1. Find the value of 'a'
+ 
If (725 – 700 + 175) ÷ 5 + √1225 = x, then {(x/2) + 20} = ?If x + y + xy = 118, such that x < y and both 'x' and 'y' are positive integers, then find minimum value of (x + y) .
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