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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.
A boy’s age is 140% of what it was 5 years ago, but 65% of what it will be after 10 years. What is his present age?
Ayush's current age is 25% greater than Ayushi's, and the difference between their ages is 8 years. What will be the ratio of their ages 8 years from now?
The ratio of A and B present age is 8:5. The product of their ages is 4000. What will be the ratio of their ages after 5 years?
The total age of A, B and C four years hence will be 80 years. Find the age of C four years hence, if the present age of A and B is 33 years and 20 year...
Four years ago, the age of the mother was 12 times the age of her daughter. Two years hence, the mother's age will be 4 times the daughter's age. After ...
A is 3 years older than B while C is 4 years younger than B. The ratio of age of A, 8 years hence and age of B, 6 years ago is 5:4. What was age of C, 1...
Currently, the ages of Rahul and Ritesh are in a ratio of 7:3. If we look back three years, the ages of Ritesh and Ramesh had a ratio of 1:3. Knowing th...
The present average age of ‘X’ and ‘Y’ is 16 years, present average age of ‘X’ and ‘Z’ is 56 years and present average age of ‘Y’ an...
The ratio of age of A and his son is 9:5. If the difference of their ages 6 year ago is 12, then find the sum of ages of A and his son 15 year hence?
A’s age is the seventh part of his father’s age. After 10 years, the age of A’s father will be twice the age of B. If B’s 5th bi...
