International 11th Class Chemistry Quiz Ranking Competition [May 2024]

1. The elements of group 16 are called———-

2. According to Lewis concept, an acid is:

3. A base according to Bronsted concept is a substance which can:

4. Which is not a source of pollution?

5. Which of the following is a homogeneous mixture?

6. The significant figures in 0.00051 are ————–.

7. The nucleus of the atom consists of ————–

8. Neutron was discovered by ————–

9. The smallest particle that can take part in chemical reactions is ————–.

10. Reduction never involves:

11. The major source of CO pollution is ————

12. At 25 degrees celsius and 730 mm pressure, 380 ml of dry oxygen was collected. If the temperature is constant, what volume will oxygen occupy at 760 mm pressure?

13. Water pollution is less if BOD is

14. A pure substance which contains only one type of atom is called ————–.

15. The adsorption of hydrogen by palladium is called ———–

16. Formation of CO and CO2 illustrates the law of ————–.

17. The gas released in the Bhopal gas tragedy was ———–

18. Freons are not recommended to be used in the refrigerator because they cause

19. Ostwald’s dilution law is applicable to:

20. The most electronegative element in the periodic table is———