Chemistry – GK Quiz

Chemistry – GK Quiz

1. The National Chemical Laboratory is situated in
 
 
 
 

2. The metal that is usually extracted from sea water is
 
 
 
 

3. Equal masses of oxygen, hydrogen, and methane are kept under identical conditions. The ratio of the volumes of gasses will be
 
 
 
 

4. The inert gasses are ____ in water
 
 
 
 

5. The mass number of an atom is equal to
 
 
 
 

6. The maximum number of covalent formed by nitrogen is
 
 
 
 

7. The names of the scientists, Newlands, Mendeleev, and Meyer are associated with the development of
 
 
 
 

8. The formula C6H5-CO-CH3 represents
 
 
 
 

9. The method of concentrating the ore which makes use of the difference in density between ore and impurities is called
 
 
 
 

10. The molecular formula of phosphorus is
 
 
 
 

11. The hardest form of carbon is
 
 
 
 

12. The organic reaction represented by equation CH3 - CH = O + H2NOH gives CH3 - CH - NH + H2O is an example of
 
 
 
 

13. The number of waves made by an electron moving in an orbit having maximum magnetic quantum number is +3
 
 
 
 

14. The number of electrons presents in H+ is
 
 
 
 

15. The hottest part of the gas flame is known as
 
 
 
 

16. The most important ore of aluminium is
 
 
 
 

17. The human body is made up of several chemical elements; the element present in the highest proportion (65%) in the body is
 
 
 
 

18. The half-life period of an isotope is 2 hours. After 6 hours what fraction of the initial quantity of the isotope will be left behind?
 
 
 
 

19. The isomerism which exists between CH3CHCI2 and CH2CI. CH2CI is
 
 
 
 

20. The number of atoms present in 21.6 gram of silver (atomic weight = 108) are same as the molecules in
 
 
 
 

21. The iron ore magnetite consists of
 
 
 
 

22. The major constituent of air is
 
 
 
 

23. The mineral containing both magnesium and calcium is
 
 
 
 

24. The main chemical constituent of clay is
 
 
 
 

25. The metal does not give H2 on treatment with dilute HCL is
 
 
 
 

26. The ionization energy of hydrogen atom in the ground state is x KJ. The energy required for an electron to jump from 2nd orbit to 3rd orbit is
 
 
 
 

27. The number of g-molecule of oxygen in 6.02 x 1024CO molecules is
 
 
 
 

28. The main active constituent of tea and coffee is
 
 
 
 

29. The most extensive, commercially useful source of thorium as monazite sand occurs in India at
 
 
 
 

30. The maximum number of isomers for an alkene with molecular formula C4H8 is
 
 
 
 

31. The hydronium ion is
 
 
 
 

32. The method that cannot be used for removing permanent hardness of water is
 
 
 
 

33. The most electropositive elements among the following is
 
 
 
 

34. The following are the half lives of four active isotopes. Which one of the following is the most dangerous to handle?
 
 
 
 

35. The first metal used by man was
 
 
 
 

36. The gas used for artificial ripening of green fruit is
 
 
 
 

37. The high reactivity of fluorine is due to
 
 
 
 

38. Zone refining is used for the purification of
 
 
 
 

39. The molecule which has the highest percentage of ionic character among the following is
 
 
 
 

40. The main chemical constituent of the oil of cardamom which is responsible for flavour of this oil is
 
 
 
 


 

LEAVE A REPLY

Please enter your comment!
Please enter your name here