Question

Which of the following statements about diamond are correct? 1. It is used as a gem in jewellery because of its ability to reflect light 2. It is a good conductor of electricity 3. It is used for cutting glass, marble stones and other hard materials 4. It is used for drilling of rocks select the correct answer using the code given below:; 1) 2 and 4 only; 2) 1, 2 and 3; 3) 2, 3 and 4; 4) 1,3 and 4

Answer 1

4)1,3 and 4 is answer