Which of the following is/are not Green House Gases?
1. Nitrous oxide
2. Ozone
3. Sulphur dioxide
Select the correct answer from the following.
Atmospheric gases like carbon dioxide, methane, nitrous oxide, water vapour, and Chlorofluorocarbons are capable of trapping the out-going infrared radiation from the earth.
The ages of A, B and C together are 64 years. B is twice as old as A and C is 4 years older than A. What is the difference between ages of B and C?
If the total ages of A and B is 6 years more than the total age of B and C. C is how many years younger than A?
The ratio of the ages of Pari and Qureshi is 5:9. If the ratio of the age of Pari after 3 years and the age of Qureshi after 9 years is 1:2, then find t...
Present ages of P and Q are in the ratio 4:9 respectively. If Q’s age, 12 years hence from now will be 4 times of P’s age, 4 years ago from now, the...
The ratio of the present ages of father and his son is 9:5. The product of their ages 3 years ago was 33 times of his son’s age that year. What wa...
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...
B is 4 years older than A and A is 7 years older than C. If the sum of the age of A and C is 25 years, then find the sum of the ages of all three.
The ratio of age of A and his son is 5:2. If the difference of their ages 5 years ago is 21, then find the sum of the ages of A and his son together 11 ...
The ratio of age of ‘B’ after 6 years from now and age of ‘C’ 8 years ago from now is 7:4, respectively. The present age of ‘C’ is 30% of th...
In a classroom there are 15 boys and 13 girls. Average age of each boy and each girl is 21 years and 17 years respectively. The sum of ages of all the b...