Q1. Which one of the following is not an element of Noble gases?

Q2. Mole is defined as the number of atoms found in _____ of carbon-12?

Q3. Which of the following is not a mixture?

Q4. Alloys are _______________

Q5. What is the name of that process in which oxygen is removed?

Q6. Rusting is an ___________ reaction.

Q7. What is needed for rusting to occur?

Q8. All acids are ________________

Q9. When an acid reacts with a metal carbonate, the products formed are _____________

Q10. Which one is an alkaline among the following?

Q11. In Periodic table elements are arranged according to their ___________

Q12. What is an Isotope?

Q13. Atomic number is represented by which letter?

Q14. Which science is sometimes called central science?

Q15. Which acid is used in the body to help digestion?

Q16. On 11 February 2016 The LIGO Scientific Collaboration announced the detection of

Q17. The SI unit of charge is

Q18. Very High Frequency (VHF) have __________ wavelengths.

Q19. Long-sight defect could be corrected by using __________ lens.

Q20. Deficiency of Vitamin A results in

Q21. For a fixed mass of gass at constant temperature, if we decrease volume, the pressure will

Q22. The lifespan of Red Blood Cells is __________ days.

Q23. The density of water is

Q24. Radioactivity was discovered by

Q25. A device which converts chemical energy into electrical energy is called