Questions

___ is the number of shells for elements of the 3rd period.

Isotopes have ______.

I. similar physical quantities and different chemical properties

II. different physical properties

III. similar chemical properties

Birth control pills contain

Which among the following Acts were repealed by Article 395 of the Constitution of India?

1.The Government of India Act, 1935

2.The Indian Independence Act, 1947

3.The abolition of Privy Council jurisdiction Act, 1949

4.The government of India Act, 1919

Select the correct answer using the code given below.

Which of the following statements are CORRECT?

I. Esters are sweet smelling substance.
II Esters are used in making perfumes.
III. Functional group of ester is R-O-RꞋ.

According to Rutherford the radius of the nucleus is about ______ than the radius of the atom.

Match the following items of column A with column B.