Ques 1. Heavy water is ?
Answer : Deutirium oxide
Ques 2. Which acid is found in Vinegar ?
Answer : Acetic acid
Ques 3. Brass is an alloy of copper and ?
Answer : Zinc
Ques 4. Which chemical compound is known as Laughing Gas ?
Answer : Nitrous oxide
Ques 5. What is the purest form of gold ?
Answer : 24 karat
Ques 6. Which is the most electronegative element of periodic table ?
Answer : Fluorine
Ques 7. Who discovered neutrons ?
Answer : James Chadwick
Ques 8. Atoms of the same element having same atomic number but different mass no. Are called ?
Answer : Isotopes
Ques 9. Which element is used for making Solar cells ?
Answer : Silicon
Ques 10. Which metal exists as a liquid at room temperature ?
Answer : Mercury
Ques 11. What is the chemical name of Baking Soda ?
Answer : Sodium Bicarbonate
Ques 12. Which process is uses for making ammonia ?
Answer : Haber process
Ques 13. Melting ice is an example of which reaction ?
Answer : Endothermic reaction
Ques 14. How many atoms per unit cell are there in a face centered cube ?
Answer : 4
Ques 15. Hydrogen peroxide is called as which agent?
Answer : Oxidising
Ques 16. Who is the father of Nuclear Physics?
Answer : Ernest Rutherford
Ques 17. Which is the main greenhouse gas ?
Answer : Carbon dioxide
Ques 18. Which inert gas is used in beacon lights?
Answer : Neon
Ques 19. How much ethanol is present in Rectified spirit ?
Answer : 95.6 %
Ques 20. Which gas helps in burning ?
Answer : Oxygen
Answer : Deutirium oxide
Ques 2. Which acid is found in Vinegar ?
Answer : Acetic acid
Ques 3. Brass is an alloy of copper and ?
Answer : Zinc
Ques 4. Which chemical compound is known as Laughing Gas ?
Answer : Nitrous oxide
Ques 5. What is the purest form of gold ?
Answer : 24 karat
Ques 6. Which is the most electronegative element of periodic table ?
Answer : Fluorine
Ques 7. Who discovered neutrons ?
Answer : James Chadwick
Ques 8. Atoms of the same element having same atomic number but different mass no. Are called ?
Answer : Isotopes
Ques 9. Which element is used for making Solar cells ?
Answer : Silicon
Ques 10. Which metal exists as a liquid at room temperature ?
Answer : Mercury
Ques 11. What is the chemical name of Baking Soda ?
Answer : Sodium Bicarbonate
Ques 12. Which process is uses for making ammonia ?
Answer : Haber process
Ques 13. Melting ice is an example of which reaction ?
Answer : Endothermic reaction
Ques 14. How many atoms per unit cell are there in a face centered cube ?
Answer : 4
Ques 15. Hydrogen peroxide is called as which agent?
Answer : Oxidising
Ques 16. Who is the father of Nuclear Physics?
Answer : Ernest Rutherford
Ques 17. Which is the main greenhouse gas ?
Answer : Carbon dioxide
Ques 18. Which inert gas is used in beacon lights?
Answer : Neon
Ques 19. How much ethanol is present in Rectified spirit ?
Answer : 95.6 %
Ques 20. Which gas helps in burning ?
Answer : Oxygen