Question

1. The physical change caused by heat is -
a) Change in Temperature
b) Change in state
c) Thermal Expansion
d) All
2. The symbol of Sodium is -
a) SO
b) Na
c) Sod
d) None
3. Green pigment present in the leaves of plants is -
a) Chlorophyll
b) Xanthophyll
c) Carotenoids
d) Hydrophyll
4. Milk teeth has no -
a) Canines b) Molars c) Incisors d) Premolars
5. The Range of clinical thermometer is -
a) 35°C -42°C b) 45°C -32°C C) -10°C - 100°C d) 0°C - 100°C
6. As a result of anaerobic respiration, muscle cells produce -
a) Ethyl alcohol b) Lactic acid c) Citric acid
d) None
7. The agents of physical weathering are -
a) Wind
b) Water c) Temperature d) All
8. A student is provided with four objects - plastic comb, ebonite, copper
rod, woolen cloth. The object that can't be charged by rubbing is -
a) Ebonite
b) Plastic comb
c) Woolen cloth
d) Copper rod
9. What is the relation between focal length and radius of curvature?
a) f= 1/2 b) f = 21 c) r= 21 d) a and c both
10. The different forms of precipitation are -
a) Hail
b) drizzles c) rain
d) all
11. Rajasthan falls under -
a) Arid zone
b) Alpine zone
c) Tropical zone
d) Sub-tropical zone
12. World's largest tropical rain forest is -
a) Central Africa
b) Amazon jungle
c) Sundarban
d) None
13. Mirror that forms virtual, diminished and erect image is -
a) Convex Mirror
b) Plane Mirror
c) Concave Mirror
d) None
14. Organism that shows both autotrophic and heterotrophic nutrition is -
a) Amoeba b) Euglena c) Mushroom
d) Man
15. In ruminants, cellulose is digested completely in -
a) Rumen b) Small Intestine c) Caecum d) Reticulum
16. Complete the equation Acid + Base-> + Water
a) Salt
b) Indicator c) Alkali
d) None
17. An earthworm respires through its -
a) Lungs b) Skin
c) Gills
d) Trachea
18. The best soil for growing most of the crops is -
a) Clayey b) Loamy c) Sandy
d) All
19. Who named the charges as positive and negative?
a) William Gilbert
b) Robert Hooke
c) Benjamin Franklin
d) None​

Answer 1

Answer:

ok

Explanation:

1-a

2-so

3-chlorophyll

4-molars

5-b

6-a

7- d

8-c

9-d

10-a

11-d

12-c

13-a

14-c

15-c

16-c

17-b

18-d

19-a

ok

Answer 2

Answer:

1. all

2. Na

3.chlorophyll

4.cannies

5. 35° to 45°

6.lactic acid

7.all

8.c

9.a

10. don't know

11.arid zone

12.amazon

13.convex mirror

16.salt

17.skins

18.loamy soil

19. c