Questions

Four words are given, out of which only one word is spelt correctly. Choose the correctly spelt word and click the button corresponding to it.

By which of the following processes are metals of high reactivity extracted from purified molten ore?

The modern periodic table consists of 18 groups and 7 periods. What is the atomic number of the element placed in the 3rd group and the 4th period?

A change in which no new substances are formed is called _____________.

Atomic number of which of the following elements is greater than that of Copper?

Human beings' hearing range is _______.

Doldrums pressure belts lies in between which of the following latitudes?

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'.
No sooner had he finished (1)/ his morning walk (2)/ when it began to rain. (3)/ No Error (4)