Questions

Except Helium, all noble gases have how many electrons in the outermost shell?

In the modern periodic table, which of the two periods contain 8 elements each?

Which of the following elements replaced eka-Aluminium in Mendeleev's Periodic table?

Which north-eastern state of India has signed up to host the 39th National Games in the year 2022?

Which is the form of market where there is lack of competition?

Which of the following is called Aurum?

Jama Masjid of Delhi was built in which century?

In the following question, out of the four alternatives, select the alternative which is the best substitute of the phrase. Belonging to middle class.