4. Which is a set of transparent materials?
(a) Glass and air
(b) Water and glass
(c) Water and air
5. Filtration is a method to separate the components of a
(a) solution
(b) mixture of a liquid and an insoluble substance
(c) both (a) and (b)
(d) pure substance
6. Sand from water is separated by
(a) sieving
(b) evaporation
(c) filtration
(d) sedimentation and decantation
7. Skeleton of human body is made up of
(a) bones
(b) cartilage
(c) both bones and cartilage
(d) None of these
8. Fish swims by
(a) forming loops alternately on two sides of the body
(b) forming loops on single side
(c) somersalting
(d) alternate dipping and coming up
9. Which is a biotic component of environment?
(a) Plants
(b) Animals
(c) Microorganisms
(d) All of these
10. Which is an aquatic adaptation?
(a) Streamlined body
(b) Light and hollow bones
(c) Hair on body
(d) lungs
Q3. Answer the following in one word (1x10=10)
1. Which soil is best for cotton plant?
2. Removing the fleece from sheep is called as?
3. List any one liquid which are miscible in water.
4. Name any one translucent material.
5. Which substance is used for loading name it?
6. Name any one lustrous material?
7. Name any one scavengers
8. In camels the fat is stored at which body part?
9. Name the three components of skeleton.
10. Name organs that are protected by rib cage.
Answers
Answer:
4.glass
5.pure substances
6.filteration
7.both bones and cartilage
8.forming loops on single sides
9.all of these
10.stream lined body
3.i.black soil
ii.shearing
iii.milk
iv.frosted glass
v.Alum
vi.iron, copper ,aluminum
vii.vulture ,blowflies
viii.humps
ix.bones ,cartilage ,ligaments
x.heart and lungs.
Explanation:
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Answer:
4.D
5.B
6.D
7.C
8.A
9.D
10.B
Q.
1.sandy loam soil is best for cotton plant.
2.removing the fleece from sheep is called as sheep shearing.
3.----
4.Plastics are the translucent material
5.Alum substance is used for loading.
6.iron is the lustrous material.
7.Vulture is scavenger.
8.camels stored fat in their humps of his body part.
9.the three components of skeleton are bones, joints and cartilage.
10.the organs that are protected by rib cage are heart and lungs.