Question

. . The elbow joint--
A) is a hinge joint
B) allows only a back and forth movement
C) allows movement in one direction only
D) all of the above
9. A specialized organ of our body whose function is contraction by means of which change of shape or movement of body part is under taken
A) cartilage
B) muscle
C) both of these
D) none of these
10. The earthworm makes the soil useful for plants because
A) the earthworm does not have any bones
B) the body of earthworm is made up of many rings joined end to end
C) the earthworm move by alternate extension and contraction of body using muscles
D) none of these
11. X is a separation technique based on the difference in weights of the solids in a solid-solid mixture. What is X?
A) Sieving
B) Handpicking
C) Threshing
D) Winnowing
12. Vinegar is a solution of acetic acid in water. What kind of mixture is vinegar?
A) A homogeneous mixture of solid and liquid
B) A heterogeneous mixture of liquid and liquid
C) A homogeneous mixture of liquid and liquid

Answer 1

Answer:

7. Hinge Joint

8.Muscle

9.None of these

11. Windowing

12. A Homogeneous mixture of liquid and liquid

Answer 2

Ans

1. D

2.B

3.D

4.D

5.C

Explanation

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