Question
A substance X turns the colour of red litmus blue, and
it will change methyl orange-Solution
A Base is a substance that is bitter in taste and turns red litmus paper into Blue. • Indicator properties of bases: Indicator-Colour changes Red Litmus paper -Turns Blue Methyl orange-From orange to yellow Phenolphthalein-from colourless to pink
More Chemistry Questions
If cos2B = sin(1.5B + 27 o), then find the measure of 'B'.Â
If sec a + tan a = 3, find the value of sin a.Â
If tan 4θ = cot 14θ, then find the value of cos 9θ.
If sec 4A = cosec (3A - 50°), where 4A and 3A are acute angles, find the value of A + 75.
The maximum value of 45 sin θ + 28 cos θ is:
- Find the value of sin²10° + sin²80° + cos²15° + cos²75°.
- If sin (2A − 3B) = (1/2) and cos (A + B) = (√3/2), where 0° < A, B < 90°, then find the value of ‘A’.
Simplify the following trigonometric expression:Â
15 cos 25° cosec 65° − 5 cot 80° cot 10°
