Questions

When is International day for Preservation of Ozone layer observed?

A man has some hens and some cows. If the total number of heads of hens and cows together is 50 and the nunber of feet of hens and cows together is 142, then the number of cows is

If the sum of three consecutive numbers is 15, what is the square of the middle number ?

Centigrade, is the unit of measurement of temperature named after whom?

In the following question, out of the four alternatives, select the alternative which is the best substitute of the words/sentence.

Recklessly extravagant or wasteful in the use of resources

In the following question, out of the given four alternatives, select the one which is opposite in meaning of the given word.

Adjure

In the following question, some part of the sentence may have errors. Find out which part of the sentence has an error and select the appropriate option. If a sentence is free from error, select 'No Error'.

The postman travelled by the cycle, often wading through (1)/ swamps or passed through jungles (2)/in order to reach the villages (3)/ No error (4)

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.

_______________ the course of the development of different life-forms heredity—which, in plain English, is unconscious memory generated in the first life-form and ______________ through all the different species—is the sole factor in the ____________ of the parent properties; while adaptation to surrounding conditions and circumstances, natural selection in the struggle _____________ existence, and partner selection in the struggle of the males for ____________ are the principal factors in the differentiation of species.

the struggle of the males for ____________ are the principal factors