## (Elementary Science Paper-2)

1. Study the following statements about villi
A. They are finger-like projection
B. They have very thin walls
C. They have small pore through which food can pass easily
D. They have a network of thin and small blood vessels close to the surface
The statements which enable the villi to absorb digested food are
(a) C , D and A
(b) D, A and B
(c) A, B and C
(d) B, C and D

2. Of the following activities in a Science class the one with least educational value is
(a) Discussing a scientific principle
(b) Drawing a design
(c) Constructing a model

3. Which of the following statements are true about photosynthesis?
A. In this process solar energy is converted into chemical energy.
B. In photosynthesis {tex}C{O_2}{/tex} and {tex}{H_2}O{/tex} are used.
C. In photosynthesis {tex}C{O_2}{/tex} is released and {tex}{O_2}{/tex} is consumed.
D. In photosynthesis {tex}{O_2}{/tex} is released and carbon monoxide is consumed
(a) A and B
(b) C and D
(c) B and C
(d) A and D

4. The correct sequence of the complex process involved in the digestion of food is
(a) Ingestion {tex} \to {/tex} digestion {tex} \to {/tex} absorption {tex} \to {/tex} assimilation {tex} \to {/tex} egestion
(b) Ingestion {tex} \to {/tex} absorption {tex} \to {/tex} digestion {tex} \to {/tex} assimilation {tex} \to {/tex} egestion
(c) Ingestion {tex} \to {/tex} assimilation {tex} \to {/tex} absorption {tex} \to {/tex} digestion {tex} \to {/tex} egestion
(d) Ingestion {tex} \to {/tex} digestion {tex} \to {/tex} assimilation {tex} \to {/tex} absorption {tex} \to {/tex} egestion

5. In a mixed ability class with students in different stages of cognitive development, which one of the following strategies will be most suitable?
(a) Using hands-on activities involving concrete objects for simplification of abstract concepts
(b) Regrouping the class into four groups as per the four stages of cognitive development proposed by Piaget
(c) Taking an average of the IQ scores of students and planning teaching accordingly
(d) Planning individual instruction for gifted student

6. Which of the following techniques is not recommended for the Science teachers to use in response to the complexity of learning?
(a) Take a pre-test to find out previous knowledge of students
(b) While introducing a complex concept, ask only open-ended questions to stimulate thinking of students
(c) Plan the level of instruction slightly above the level of individual students but well within the level of the class
(d) Use manipulative materials for explaining the subtle processes

7. For the conversation of forests, a successful strategy is essential. This strategy should involve
(a) Comprehensive programme for the protection of all the physical and biological components of forests
(b) Protection of herbivores
(c) Protection of consumers
(d) Protection of animals at highest trophic level, i.e., top carnivores, as they depend directly on herbivores

8. The project method of teaching is best associated with the philosophy of
(a) John Dewey
(b) Max Rafferty
(c) B F Skinner
(d) Robert Hutchins

9. Lesson planning in Life Science should be guided primarily by the consideration of
(a) The curriculum goals and learning outcomes
(b) Providing pupils with work
(c) Meeting the needs of the average child in the class
(d) Satisfying parents

10. A teacher is conducting a demonstration to motivate students, but the demonstration does not result in the expected outcome. The teacher is best advised to
(a) Withhold the demonstration and do it again
(b) Tell the class that the demonstration failed and ask them to help/determine the reason
(c) Send a note to the Science coordinator, asking him/her to come to the room
(d) Find out and explain the cause of failure of the demonstration by involving students

11. Porters who carry heavy luggage always have a long piece of cloth with them. Before carrying the load on their heads they fold the cloth in the shape of a round disc and place it on their heads. By doing this they
(a) Increase the area of contact of the load of luggage with their head
(b) Decrease the force exerted by the load of luggage on the head
(c) Save their heads from possible injury
(d) Decrease the thrust of the luggage

12. Before playing a sitar, a sitarist always adjusts the tension of the string of the sitar and tries to plunk it suitably. By doing so the sitarist adjusts the
(a) Pitch of the string of sitar
(b) Loudness of sound produced by sitar string
(c) Amplitude of vibration
(d) Intensity of sound

13. When upper-grade children do research work the major problem the teacher has to content with is
(a) Discouraging children form copying verbatim from books and encyclopedias
and guiding them effectively
(b) Finding appropriate materials
(c) Scheduling time in school library on internet
(d) Gaining the co-operation of the public library

14. The part of alimentary canal which receives bile juice from the liver and stores it in gall bladder is
(a) Pancreas
(b) Small intestine
(c) Stomach
(d) Oesophagus\

15. Out of the following, in which lesson is general rules explained first and after that example are illustrated?
(a) Deductive lesson
(b) Inductive lesson
(c) Skill lesson
(d) Cognitive lesson

16. The crop nutrients available in fertilizers are
(a) Nitrogen, phosphorus and potassium
(b) Nitrogen, potassium and iron
(c) Nitrogen, sodium and potassium
(d) Nitrogen, phosphorus and iron

17. Which one of the following is most appropriate about curriculum planning in science?
(a) It is done to plan the specific learning objectives each lesson to build upon prior learning
(b) It gives details of each unit of work for each term
(c) It is done to map the scientific topic studied in each term
(d) It is done to combine the scientific study with work other subject areas

18. After physical exercise we sometimes get muscles cramps. This results due to
(a) Non-conversion of glucose of lactic acid
(b) Conversion of pyruvate to lactic acid
(c) Non-conversion of glucose to pyruvate
(d) Conversion of pyruvate to alcohol

19. An object of mass 5 kg is sliding on a smooth frictionless horizontal surface with a constant velocity of 10 m/s. The force required to keep the object moving with the same velocity is
(a) 5 N
(b) 500 N
(c) 250 N
(d) 0 N

20. Select form the following a set having correct combination of organs that do not carry out any digestive function.
(a) Oesophagus, buccal cavity, rectum
(b) Small intestine, large intestine, rectum
(c) Oesophagus, buccal cavity, large intestine
(d) Oesophagus, large intestine, rectum

21. Select the correct sequence of parts in the human alimentary canal.
(a) Mouth {tex} \to {/tex} oesophagus {tex} \to {/tex} stomach {tex} \to {/tex} small intestine {tex} \to {/tex} large intestine
(b) Mouth {tex} \to {/tex} stomach {tex} \to {/tex} oesophagus {tex} \to {/tex} small intestine {tex} \to {/tex} large intestine
(c) Mouth {tex} \to {/tex} stomach {tex} \to {/tex} oesophagus {tex} \to {/tex} large intestine {tex} \to {/tex} small intestine
(d) Mouth {tex} \to {/tex} oesophagus {tex} \to {/tex} stomach {tex} \to {/tex} large intestine {tex} \to {/tex} small intestine

22. A tightly structured lesson of Physics if taught with little flexibility is least conductive to the learning of the student who
(a) Has an IQ of 85
(b) Has an IQ of 125
(c) In hyperactive

23. Which of the following is heterogeneous mixture?
(a) Iodised table salt
(b) Stainless steel
(c) Air filled in a balloon
(d) Brass

24. Geothermal energy is an alternative source of energy. For this energy, the most feasible regions are those that
(a) Are over hot spots in the crust
(b) Are near the coastal regions
(c) Have thermal power plants
(d) Have coal mines

25. Select from the following the reaction(s) that is/are possible
A. {tex}A{l_2}{(S{O_4})_3}(aq) + Cu\left( s \right) \to {/tex}
B. {tex}FeS{O_4}(aq) + Zn(s) \to {/tex}
C. {tex}CuS{O_4}(aq) + Fe(s) \to {/tex}
D. {tex}A{l_2}{(S{O_4})_3}(aq) + Zn(s) \to {/tex}
(a) B and C
(b) A and D
(c) A and B
(d) Only A

26. Some dinosaurs had feathers although they could not fly, but birds have features that help them to fly. In the context of evolution this means that
(a) Feathers are homologous structures in both the organism
(b) There is no evolutionary connection between reptiles and birds
(c) Reptiles have evolved from the birds
(d) Birds have evolved from reptiles

27. If you are asked to project the image of a well-lit painting on the wall, which one of the following optical devices would you select this purpose?
(a) Convex lens
(b) Concave lens
(c) Convex mirror
(d) Plane mirror

28. A magnet is rolled in a mixture of iron fillings and Sulphur powder. It is observed that
(a) Only the iron fillings get attracted equally to both poles of the magnet
(b) Iron fillings get attracted to both poles and Sulphur clings in the middle of the magnet
(c) Iron filling get attracted to the N-pole and Sulphur to the S-pole of the magnet
(d) Iron fillings get attracted to the S-pole and Sulphur to the N-pole of the magnet

29. In the following table, the readings of an odometer at different times of a journey as given

The speed of the vehicle in metres per second is
(a) 10
(b) 18
(c) 36
(d) 20

30. Select from the following a set of three metals which are found in free state.
(a) Silver, gold, platinum
(b) Copper, gold, iron
(c) Aluminium, copper, silver
(d) Gold, iron, silver

#### 1 comment:

1. I think answer of question no. 18 is option B..please check it