Question
Which isotope of Carbon is used in determining the age
of fossils?Solution
Explanation: Radiocarbon dating measures the decay of the radioactive isotope Carbon-14 to estimate the age of organic remains.
A mixture (milk and water) contains 40% milk and rest 192 litres water. How much milk should be added to the mixture to make the ratio of milk to water ...
- An alloy contains 50% iron, 30% zinc, and 20% aluminum. How much iron should be added to 30 kg of the alloy so that the new alloy contains 60% iron?
- Two mixtures (milk and water) 'A' and 'B' contains quantities of milk and water in ratio of 3:2 and 5:3, respectively. If 40 ml from 'A' and 32 ml from 'B'...
The diluted wine contains only 8 liters of wine, and the rest is water. A new mixture whose concentration is 30%, is to be formed by replacing wine. How...
225 ml of mixture ‘A’ contains milk and water in the ratio 2:3 respectively. If the quantity of milk in mixture ‘B’ is 25.5% more than that in m...
A container contains Alcohol and water in ratio of 3:7 and Capacity of Container is 60 lit. If half of the Container is replaced with 10 lit of water th...
A mixture of lime and water contains 3a liters lime and (a + 40) liters water. Upon adding 20 liters more water, the ratio of quantity of water to that ...
Mixture ‘X’ contains 50% alcohol and the rest 40 litres of water. 150 litres of mixture ‘Y’ contains alcohol and water in the ratio 5:10, respec...
A 30 L solution contains 20% alcohol and the rest water. How many litres of water must be added to make the solution 15% alcohol?
A 150 litres solution contains 60% juice and the rest is water. How much water should be mixed in so that juice forms 30% of the final solution?
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