Which of the following factor is not necessary for photosynthesis?
A) Oxygen
B) Carbon dioxide
C) Light
D) Chlorophyll
Explanation: Oxygen is not essential for the process of photosynthesis because oxygen is released in this process when plants utilize the raw materials i.e., carbon dioxide and water to produce sugars (glucose). Hence, it is not essential to carry out the process of photosynthesis.
My father built this house.
[Choose the correct passive voice:]
A) The house was built by my father
B) The house is built my father.
C) This house was built by my father.
D) The house has built by my father.
What should be subtracted from x2 – xy + y2 to make it a perfect square?
A) xy
B) - xy
C) Both (A) & (B)
D) None of these
Solution: if we subtract xy from x2 – xy + y2 , then it becomes perfect square e.g.
x2 – xy + y2 – xy = x2 –2 xy + y2
= (x – y)2 which is perfect square.
72 is _________ percent of 360.
A) 20%
B) 31 %
C) 24%
D) 40%
Which measure of
central tendency includes the magnitude of scores?
A) Mean
B) Mode
C) Median
D) Range
