In calcareous soil, effervescence is visible when treated with diluted 0.1 N HCl due to release of which of the following?
CaCO3+ 2HCl = H2O + CO2(g) +Ca2++ 2Cl- Calcareous soil that contains enough freecalcium carbonateto effervesce visibly, releasing carbon-dioxide gas, when treated with cold 0.1Nhydrochloric acid,
Speed of a car and a bus is 20 km/h and 10 km/h, respectively. If the time taken by the car to cover a distance of ‘8x’ km is 1 hour less than time ...
Two cars A and B travel from one city to another, at speeds of 72 km/hr and 90 km/hr respectively. If car B takes 1 hour lesser than car A for the jour...
Aman takes 36 minutes more than Sudhanshu to cover a distance of 130 km. If Aman doubles his speed, he takes 42 minutes less than Sudhanshu to cover the...
A man covered a distance of 240 km in 4 hours on a bike. How much distance will he cover on a bicycle in 8 hours if he rides the bicycle at one-tenth th...
Robert started his journey on Monday and travelled at constant speed. Next day by 10.30 am, he had covered 4/7 of his whole journey and on the same day ...
A Bike has to cover a distance of 120 km in 15 hours. If it covers half of the journey in 3/5th of the time, the speed to cover the remaining distance i...
A train covers a distance of 80 km at the speed of 55 km/h the next 50 km distance covers with a speed of 40 km/h and last 60 km with the speed of 80 km...
A train covers a certain distance at a speed of 20 km/h and the next same distance with a speed of 35 km/h and the next same distance with a speed of 60...
A man travels 450 km to his home partly by train and partly by car. He takes 8 hrs 40 minutes if he travels 240 km by train and rest by car. He takes 20...
