Questions

Who discovered Nitrogen?

There are ............ metalloids in the modern periodic table.

Which was not produced by volcanic outgassing?

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.
He could excel in his board exams only after _____ very hard.

Akbar's tomb is located at which of the following places?

A sentence has been given in Active/Passive Voice. Out of the four given alternatives, select the one which best expresses the same sentence in Passive/Active Voice.

Shah Jahan built the Red Fort.

In the following question, a sentence has been given in Active/Passive voice. Out of four alternatives suggested, select the one, which best expresses the same sentence in Passive/Active voice.

My father decorated the entire house.

A Sonar of a ship sends sounds waves of speed 1600 m/s. These waves are reflected back by the ocean floor in 4 seconds. Find the depth (in m) of the ocean floor.