General Science - Online Test
Q1. Life expectancy refers to
Answer : Option C
Explaination / Solution:
Life expectancy refers to the number of years a person is expected to live based on the statistical average.
Q2. For an endothermic reaction, the minimum value for the energy of activation in terms of will be
Answer : Option C
Explaination / Solution:
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Q3. A ________ becomes a _____ if we draw a line joining mid-points of the tops of all rectangles
Answer : Option B
Explaination / Solution:
A frequency polygon is a plane bounded by straight lines, usually four or more lines. Frequency polygon is an alternative to histogram and is also derived from histogram itself. A frequency polygon can be fitted to a histogram for studying the shape of the curve. The simplest method of drawing a frequency polygon is to join the midpoints of the topside of the consecutive rectangles of the histogram.
Q4. Farmers cannot retain the produce for a long time they have to sell it immediately. Which defect of agriculture is shown in this system
Answer : Option B
Explaination / Solution:
Most of the Indian farmers are very poor and thus have no capacity to wait for better price of his produce in the absence of proper credit facilities. Farmers often have to go for even distress sale of their output to the village moneylenders-cum-traders at a very poor price.
Q5.
At a distance L=400m from the traffic lights the brakes are applied to a locomotive moving at a velocity v=54km/hr. Determine the position of locomotive relative to the traffic lights 1 minute after the application of the brakes if its acceleration is -0.3m/s2.
Answer : Option B
Explaination / Solution:
Initial velocity u = 54 km/h = 15 m/s
Let Final velocity v = 0
Acceleration a = -0.3 m/s2
Time taken to stop = t
Using
=>
=> t = 50 sec
It means it has been stopped before 1 minutes.
So distance covered in 1 minute
=>
=> s = 375 m
Position of locomotive relative to the traffic lights= 400-375 = 25 m
Q6. Green revolution refers to
Answer : Option C
Explaination / Solution:
The Green Revolution refers to a set of research and development of technology transfer initiatives occurring between the 1930s and the late 1960s, that increased agricultural production worldwide, particularly in the developing world, beginning most markedly in the late 1960s. The initiatives resulted in the adoption of new technologies and new methods of cultivation.The initiatives, led by Norman Borlaug, the "Father of the Green Revolution".
Q7. M- phase undergoes
Answer : Option C
Explaination / Solution:
Since, in mitosis the number of chromosomes in the parent and progeny cells is the same, it is also called as equational division.
Q8. Liquid – liquid sols are known as
Answer : Option B
Explaination / Solution:
Liquid in liquid sols are emulsions
Q9. Six charges, each equal to + q, are placed at the corners of a regular hexagon of side a. The electric field at the point of intersection of diagonals is
Answer : Option D
Explaination / Solution:
The field of opposite charges cancels each other so net electric field at centre=0
Q10. Nucleosome is seen in
Answer : Option D
Explaination / Solution:
The nucleosome is the fundamental subunit of chromatin. Nucleosome is clearly seen in fungus called Yeast.
