Question
The ratio of number of boys to number of girls of a
class was 2:5. If 4 girls were absent, the ratio becomes 3:7. Find total number of students in the class.Solution
Let the number of boys and girls in the class be 2a and 5a respectively.2a/(5a - 4) = 3/714a = 15a - 12a = 12Therefore, total number of students in the class = (2 + 5)*12 = 84
According to the USDA classification, which particle size defines “clay”?
During a prolonged dry spell, a farmer notices soil crusting in the field. What could be a possible consequence of soil crusting on the crops?
The disorder of carrot that occurs due to undecomposed manure and hard soil pan
Which of the following is the progeny of breeder seed and is responsible for producing certified seed?
What is the primary source of silicon in soil minerals?
Which mineral is most abundant in the Earth’s crust?
In which soil order is cryopedoturbation, a frost churning process resulting from the freezing and thawing of soil material, predominantly observed?
Water held between tension of 1/3bar to 31 bar in soil is classified as ____
The true soil (solum) corresponds to horizon:
In terms of the order from youngest to the oldest soil, which one of the following is the correct chronological sequence?
