Exams

Malthusian theory is associated with which of the following ?

If a healthy freshwater fish is placed in salt water, what will be the expected consequence ?

In the following passage, some of the words have been left out. Read the passage carefully and select the correct answer for the given blank out of the four alternatives.

"Jim Crow" shuns the mountains for reasons satisfactory to himself; not so the magpie, the raven, and __________ mischief-maker, Clark's nutcracker. All of which keeps the bird-lover from the East in an ecstasy of surprises until he has _____________ accustomed to his changed environment. One cannot help ___________ into the speculative mood in view of the sharp contrasts ______________ the birds of the East and _________ of the West.

magpie, the raven, and __________ mischief-maker, Clark's nutcracker.

If the circumference of a circle is 44 cm, then what must be its area (in cm²)?

In the following question, four words are given out of which one word is correctly spelt. Select the correctly spelt word.

The arithmetic mean of the marks scored by students of a class is 58. 20% of them secured a mean score of 60. The mean score of another 30% of the students was 40. The mean score of the remaining students is

________________ refers to the superposing of two or more coherent waves to produce regions of maxima and minima in space, according to the principle of superposition.

In the following question, two statements are given each followed by two conclusions I and II. You have to consider the statements to be true even if they seem to be at variance from commonly known facts. You have to decide which of the given conclusions, if any, follows from the given statements.

Statements:
(I) All pilots are brave men.
(II) All astronauts are pilots.

Conclusion:
(I) All astronauts are brave men.
(II) Some pilots are astronauts.