Questions

The modern periodic table consists of 18 groups and 7 periods. What is the atomic number of the element placed in the 2nd group and the 4th period?

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

Lasting for a very short time

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'.

Go up the beach and watch for tourists (A)/so you could warn anyone(B)/before they get to the water.(C)No error(D)

In the following question, a sentence has been given in Direct/Indirect speech. Out of the four alternatives suggested, select the one, which best express the same sentence in Indirect/Direct speech.

I said to Arun, "What do you want?"

SMOG is a combination of

Who was the first Indian astronomer to calculate the time taken by earth to orbit the sun?

According to the Hornbostel–Sachs system of Indian Musical Instruments, Ghungroo can be classified as

The term of office of the Vice-President of India is