Questions

A Sonar of a ship sends sounds waves of speed 1500 m/s. These waves are reflected back by the ocean floor in 5 seconds. Find the depth (in m) of the ocean floor.

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.

We get sleepy and wake up, become hungry and thirsty at certain hours, ____________ force of habit. We form the habit of liking a certain chair, or nook, or corner, or path, or desk, and __________ seek this to the exclusion of all others. We ______________ use a particular pitch of voice and type of enunciation in speaking, and this becomes one of our characteristic marks; or we _________ the habit of using barbarisms or solecisms of language in __________, and these cling to us and become an inseparable part of us later in life.

marks; or we _________ the habit of using

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 evolutionary history of penguins (1)/ is well-researched and represents a showcase of (2)/ evolution bio geography. (3)/ No error (4)

In the following question, the sentence given with blank to be filled in with an appropriate word. Select the correct alternative out of the four and indicate it by selecting the appropriate option.

I ________ my black leather shoes till they shine.

Android is a mobile operating system designed primarilyfor touch screen mobile devices such as smartphones andtablets. Which among the following was the first Android Operating System?

_____________ is the number of deaths in the population during a given period.

Which of the following is man-made fibre?

Who invented Space Pen?