Plants survive by extracting CO2 from the air and using sunlight to convert it into proteins and sugars. Scientists have found that plants are growing faster as they absorb the increasing volume of carbon dioxide in the atmosphere. This phenomenon is buying us time as the climate changes, however scientists have warned against drawing false comfort from such findings, as other factors, such as drought will have a negative effect. 
1. CO2 emissions are directly affecting the size of plants. 
A True 
B False 
C Cannot Say
2. The speed of plant growth contributes to counteracting climate change. 
A True 
B False 
C Cannot Say 

3. The negative effects of drought will invalidate the positive effects of increased carbon dioxide in the atmosphere.
A True
B False
C Cannot Say
4. Our climate is unaffected by the increase in carbon dioxide.
A True
B False
C Cannot Say
5. Plants would not exist without carbon dioxide.
A True
B False
C Cannot Say

6. Which statement will help one find the total compound interest occurred on a sum of
money after 5 years?
A: The rate of interest was 6% per annum.
B: The total simple interest on the same amount after 5 years at the same rate of interest will be Rs.600
a. Statement A is sufficient
b. Statement B is sufficient
c. Either of the two statements is sufficient
d. Both the statements are needed
e. Both the statements are not sufficient
7. If Ravi bought an optical for Rs.319.60, approximately at what price should he sell it to make 25% profit?
a. Rs.400
b. Rs.450
c. Rs.480
d. Rs.520
e. Rs.550

8. The average of 24 boys and the teacher is 15 years. When the teacher’s age is excluded, the average decreases by 1. What is the age of the teacher?
a. 36 Years
b. 38 Years
c. 39 Years
d. 42 Years
e. Data inadequate
9. If 37% of a number is 990.86 approximately what will be 19% of that number?
a. 700
b. 600
c. 540
d. 500
e. 480