std 6th question paper first term Science

Q 1 Choose the correct alternative from alternative form the brakcet and fill in the blank :
( melanin, man-made, natural, oxygen ) ( mark 1 each )

1. To inhale _________ and to exhale carbon dioxide is called respiration.
2. Rubber made by vulcanization is a  _____________ maternal.
3. Cells of epidermis contain a pigment called ____________

Q 2. Match the following:   ( mark 1 each )
                          A                                           B
                With scales                               shoulder
                Ball and socket joint                 frog
                                                                  snake

Q 3 State true or false : ( mark 1 each )
1. The amoeba is a multi cellular animal
2. Bone are soft.

Q 4 Name the following  ( mark 1 each )
1. Two shrubs.
2. Two creepers.

Q 5 Who am I ? ( mark 1 each )
1. I dissolve in water but not in kerosene.

Q 6. Answer in one sentences : ( mark 1 each )
1. What is the emergency contact number of fire brigade ?
2. Write any one property of glass.
3. Write any two uses of rubber.
4. Name any one vitamin present in milk.

Q 7.Who is odd one out ? ( mark 1 each )
1. Grape, orange, lemon, hibiscus.
2. Sunflower, banyan, jowar,bajra.

Q 8 What will happen if   (mark 2 each )
1. Rubber is not fitted on a pair of tongs.
2. There are no joints in our body.

Q 9 Write the symptoms of the following diseases: ( mark 1 each )
 1. Scurvy              2. Beriberi
\
Q 10 Write the difference between : ( mark 2 each )
1. Living thins and non- living things.
2. A tree and a shrub.
3. Vertebrates and invertebrates.

Q 11 Give reasons :  ( mark 2 )
1 Kerosene left open in a dish disappears.
2. Coconut oil thickens in winter.
3. Humus is a natural material.

Q 12 Answer the following ( mark 2 each )
  1 what should we do to keep our bones strong and healthy ?
  2 What first aid will you provide in the following situation ? Sunstoke.
  3 Why did the need for man -made material arise ?

Q 13  answer in brief : (mark 3 each )
1 Write the causes of forest fires.
2. What are the functions of the human skeletal system ?
3. What are the similarities between plants and animals ?

Q 14 Draw neat labeled diagram of the following  ( mark 1each)
1. The structure of a plant.
2. Structure of the skin

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