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In alkaline medium, KMnO4KMnO4 acts as an oxidising agent as follows MNO−4+2H2O+3e−→MnO2+MNO4−+2H2O+3e−→MnO2+OH−OH− Thus three electrons per molecule of are involved.
If 4x² + y² = 25 and x y = 6, then find the value of 2x + y?
In △ ABC, AB = AC. A circle drawn through B touches AC at D and intersect AB at P. If D is the midpoint of AC and AP = 2.5 cm, then AB is equal to:
A boat covers 540 km upstream and downstream in 't' time. If the speed of the stream is 8 km/h and the speed of the boat is 10 km/h then find the value ...
If x 8 + x -8 = 194, then find the value of (2x 2 – 4) 2 – 1.
Simplify the following expression: (8x - 6y - 5z) 2
In △ ABC, ∠ A = 90°. M is the midpoint of BC and D is a point on BC such that AD Ʇ BC. If AB = 7 cm and AC = 24 cm. then AD: AM is equal t...
A dishonest dealer claims to sell goods at cost price but uses a false weight of 900g instead of 1kg. What is his profit percentage?
If 8x3 - 125y3 = (2x - Ay) X (Bx2 + 25y2 + Cxy), then find the value of 3 X (2A + 6B) - 2C.
