Question
Consider the following statements: Assertion (A):
Alcohol, instead of mercury, is used in thermometers to measure temperatures up to 60°C. Reason (R): The freezing point temperature of alcohol is lower than mercury.Solution
Mercury freezes at -39°C, whereas alcohol freezes at temperatures well below -100°C. This makes alcohol suitable for measuring very low temperatures. On the other hand, mercury boils at 357°C, while alcohol boils at 78°C, making mercury more appropriate for measuring high temperatures. Thus, both (A) and (R) are true and (R) correctly explains (A). Hence, the correct answer is (B).
If tan x + cot x  = 7, find  tan3 x + cot3 x = ?
If (x+1/x)2 = 3 Then the value of
x96 + x66 + x42 + x18 + x12 + 1 is
Determine the remainder when the polynomial 4x 3 Â - 5x 2 Â + 2x + 1 is divided by (4x - 3).
If polynomial P(x) = x3 - 3x2 + 5x-3 is divided by polynomial G (x) = x2 - 2, the quotient and remainder are:
If Â
 = 4 then
if a2 + b2 + c2Â =Â 2(4a -5b -9c)-122 , then a-b-c = ?
If a = 55, then what is the value of
A company’s expenditure on three departments over four years is as follows (in thousands):
If
= 2 then find