Which one of the following oxides reacts with both acid and base?
The correct answer is A
The speed of two cars A and B are in the ratio of 15:17 respectively. Car A travels 10 km less than the car B in the same time duration. What was the di...
A train has to cover a distance of 120 km in 10 hours. If it covers half journey in 3/5th time, then the speed of covering the remaining dist...
The distance between two stations A and B is 900 km. A train starts from A and moves towards B at an average speed of 30 km/hr. Another train starts fr...
Three persons named P, Q, R started their journey at 9.30 AM, 11.30 AM, 2 PM respectively from A to B. The speed of Q is √625 m/sec. Q reached the des...
The speed of ‘A’ and ‘B’ is 75 km/hr and 30 km/hr, respectively. If the distance covered by ‘A’ in ‘x&r...
Ajay and Vishal left the place ‘X’ with different speeds which are in the ratio 5:3 respectively. Ajay left the place 36 seconds after Vishal. If af...
A tiger chases deer. The deer is 175 leaps ahead of its jumps from tiger. The Deer can jump 6 times in thetime in which the Tiger jumps 4 times. The di...
Sheila walks at the speed of her usual speed (20/21) and determines a clear distance in eight minutes more than the time it takes in normal speed. Calcu...
‘A’ and ‘B’ started moving towards each other at same time with a speed of 24 km/hr and 10 km/hr, respectively. If the di...
Driving at 2/3 of my original speed, I am 6 hours late for my office. How much is my original time taken?
