1. Rate of diffusion is higher in…

(a) Solid (b) Liquid (c) Gas (d) All of these

2. Pure form of the matter is/are…

(a) Element (b) Compound (c) None of these (d) Both A & B

3. Find Impure form of the matter from the following

(a) CO2 (b) Salt solution (c) Hydrogen (d) None of these

4. 100 K is equal to:
(a)183°C (b)-173°C (c)173°C (d)-273°C

5.  To increase the rate of evaporation temp. should be

(a) High (b) Low (c) Can’t say (d) Other than these

6. To increase the rate of evaporation humidity should be

(a) High (b) Low (c) Can’t say (d) Other than these

7. To increase the rate of evaporation wind speed should be

(a) High (b) Low (c) Can’t say (d) Other than these

8. To increase the rate of evaporation surface area should be

(a) High (b) Low (c) Can’t say (d) Other than these

9. How many total states of matter exist…

(a) 2 (b) 4 (c) 5 (d) 6

10. Conversion of matter from solid to gas is known as…

(a) Melting (b) Boiling (c) Sublimation (d) Condensation

11. Conversion of matter from solid to liquid is known as…

(a) Melting (b) Boiling (c) Sublimation (d) Condensation

12. Conversion of matter from liquid to gas is known as…

(a) Melting (b) Boiling (c) Sublimation (d) Condensation

13. Conversion of matter from gas to liquid is known as…

(a) Melting (b) Boiling (c) Sublimation (d) Condensation

14. Conversion of matter from liquid to solid is known as…

(a) Melting (b) Boiling (c) Sublimation (d) Freezing

15. Conversion of matter from gas to solid is known as…

(a) Melting (b) Boiling (c) De-sublimation (d) Condensation

16. Compression is high in…

(a) Solid (b) Liquid (c) Gas (d) All of these

17. Rigidity is high in…

(a) Solid (b) Liquid (c) Gas (d) All of these

18. Fluidity is high in…

(a) Solid (b) Liquid (c) Gas (d) All of these

19. Shape is fixed in…

(a) Solid (b) Liquid (c) Gas (d) All of these

20. Density is low in…

(a) Solid (b) Liquid (c) Gas (d) All of these

21. Rigidity is low in…

(a) Solid (b) Liquid (c) Gas (d) All of these

22. Compression is lowest in…

(a) Solid (b) Liquid (c) Gas (d) All of these

23. The term melting is related to the…

(a) Solid (b) Liquid (c) Gas (d) Plasma

24. The term boiling is related to the…

(a) Solid (b) Liquid (c) Gas (d) Plasma

25. The term evaporation is related to the…

(a) Solid (b) Liquid (c) Gas (d) Plasma

26. Mixture can be

(a)  homogeneous (b) heterogeneous (c) Both (a) and (b) (d) pure substance

27. Which of the following is a compound?
(a)Stainless steel (b)Bronze (c)Graphite (d)Hydrogen sulphide

28. In which phenomena water changes into water vapour below its B.P.?
(a) Evaporation (b)Condensation (c)Boiling (d)No such phenomena exist

29. The boiling point of water on Celsius and Kelvin scale respectively is:
(a)373, 273 (b)0, 273 (c)273, 373 (d)100, 373

30. The change of a liquid into vapour is called:
(a)Vaporization (b)Solidification (c)Sublimation (d)None of these

31. Which one is a sublimable substance?
(a)Table salt (b)Sugar (c)Iodine (d)all of these

32. What is Dry Ice?
(a)Ice of water (b)Ice that has been dried (c)Solid carbon dioxide (d)None of these

33.  Which one is a surface phenomenon?
(a)Evaporation (b)Boiling (c)Both (a) and (b) (d)None of these

34. The one, in which inter-particle forces are strongest, is:
(a) Sodium chloride (b) Hydrogen (c) Oxygen (d) Carbon dioxide

35.In which of the following the inter-particle force is weakest?

(a) Solid (b) Gas (c) Liquid (d) all of these

36.  0 ° C temperature is equal to
(a) 0 K (b) 273 K (c) -273 K (d) 300 K

37.  If both the K and L shells are full, what would be the atomic number of that element?

(a)20 (b)14 (c)10 (d) 16

38.  Carbon has valence electrons…

(a) 3 (b) 5 (c) 4 (d) 6

39. The conversion of liquid to solid is called as…

(a) Melting (b) Freezing (c) Boiling (d) All of these

40. The conversion of Solid to gas is called as:

(a) Melting (b) Sublimation (c) Boiling (d) All of these

41. Compressibility is negligible in…

(a) Gas (b) Solid (c) Both A & B (d) None of these

42. Rigidity is highest in…

(a) Gas (b) Liquid (c) Solid (d) All of these

43. Fluidity is highest in…

(a) Gas (b) Liquid (c) Solid (d) All of these

44. Tensile strength is highest in…

(a) Gas (b) Liquid (c) Solid (d) All of these

45. Interparticular space in highest in…

(a) Gas (b) Liquid (c) Solid (d) All of these

46. The hardest natural material among the following is…

(a) Carbon (b) Diamond (c) Graphite (d) Coal

47. Which among the following can carry the electricity?

(a) Carbon (b) Iodine (c) Graphite (d) Sulphur

48. Which among the following is liquid at room temperature?

(a) Mercury (b) Bromine (c) Iodine (d) both A & B

49. which among the following is soft in nature?

(a) Sodium (b) Lithium (c) Potassium (d) All of these

50. Which among the following has highest melting point?

(a) Iron (b) Tungsten (c) Copper (d) Nickel

 

Answers:

1

2

3

4

5

6

7

8

9

10

C

D

B

B

A

B

A

A

C

C

11

12

13

14

15

16

17

18

19

20

A

B

D

D

C

C

A

C

A

C

21

22

23

24

25

26

27

28

29

30

C

A

A

B

B

C

D

A

D

C

31

32

33

34

35

36

37

38

39

40

C

B

C

A

A

B

C

C

B

B

41

42

43

44

45

46

47

48

49

50

B

C

A

C

A

B

C

D

D

B