Organisation : Karnataka Secondary Education Examination Board
Exam : SSLC Question Papers
Document Type : Model Question Paper
Category or Subject : Science
Year : 2017
Website : https://kseab.karnataka.gov.in/
Download Science Model Question Paper : https://www.pdfquestion.in/uploads/11779-Science.pdf
SSLC Science Model Question Paper :
Code No. : 83E
Time : 9-30 A.M. to 12-30 P.M.
Max. Marks : 80
General Instructions to the Candidate :
1. This Question paper consists of objective and subjective types of questions.
Related : KSEEB SSLC Mathematics Model Question Paper 2017 : www.pdfquestion.in/11775.html
2. This Question paper has been sealed by reverse jacket. You have to cut on the right side to open the paper at the time of commencement of the examination. Check whether all the pages of the question paper are intact.
3. Follow the instructions given against both the objective and Subjective types of questions.
4. Figures in the right hand margin indicate maximum marks for the questions.
5. The maximum time to answer the paper is given at the top of the question paper. It includes 15 minutes for reading the question paper.
I. Four alternatives are given for each of the following questions / incomplete statements. Only one of them is correct or most appropriate. Choose the correct alternative and write the complete answer along with its letter :- 10 × 1 = 10
In Flerning’s right hand rule middle finger indicates the direction of
(A) magnetic field
(B) induced electric current
(C) mechanical energy
(D) motion of the conductor.
2. Identify one of the uses of solar heater in the following.
(A) Conversion of solar energy into electrical energy
(B) Providing energy for artificial satellites
(C) Desalination of marine water
(D) Using in automatic streetlights.
3. Significant reduction in the platelet count of human blood is the main symptom of this disease.
(A) Chikungunya
(B) Dengue
(C) Bird flu
(D) Gonorrhea.
4. Si + C ? SiC. This chemical reaction is an example for
(A) exothermic reaction
(B) endothermic reaction
(C) dissociation reaction
(D) displacement reaction.
5. No image is formed on the blind spot of human eye because,
(A) cones are absent
(B) rods are absent
(C) rods and cones are absent
(D) optic nerve is absent.
6.A domestic electrical appliance requires alternating current of 15 V. If 220 V of alternating current is supplied to the house, then the device that helps in the functioning of that electrical appliance is
(A) induction coil
(B) step-up transformer
(C) AC dynamo
(D) step-down transformer.
7. While doing the experiment of copper voltameter, in which of the following cases, more amount of copper gets deposited at cathode 2
(A) 2 amperes of electric current is passed for 30 minutes
(B) 4 amperes of electric current is passed for 20 minutes
(C) O-5 amperes of electric current is passed for 80 minutes
(D) 1-5 amperes of electric current is passed for 30 minutes.
8. Identify the correct complementary base pairing among the following.
(A) Adenine — Thymine and Guanine — Cytosine
(B) Adenine — Guanine and Thymine — Cytosine
(C) Adenine — Cytosine and Thymine — Guanine
(D) Guanine — Adenine and Cytosine — Adenine.
9. Find out the most efficient engine in the following.
(A) an engine converts 80 KJ of heat energy into 20 KJ of work
(B) an engine converts 50 KJ of heat energy into 15 KJ of work
(C) an engine converts 30 KJ of heat energy into 6 KJ of work
(D) an engine converts 60 KJ of heat energy into 24 KJ of work.
10. Haemoglobin levels in the blood samples of two persons A and B are found to be 9 gm/dL and 13 gm/dL respectively. Which statement is true with respect to the amount of oxygen supply in their body ?
(A) More in person B than in person A
(B) More in person A than in person B
(C) Equal in person A and person B
(D) No correlation between oxygen supply and the level of haemoglobin.
Answer the following questions : 7 × 1 = 7
12. Write any two advantages of bio-energy.
13, What is red shift P
14, Name the two important non-metallic oxides which cause acid rain.
15. Mention the properties of silica due to which it is used as sand bath in laboratory.
16. State the modern periodic law.
17. Draw the circuit symbol of fl-P-n transistor.
18. Sclerenchyma fibres are used in coir industries to make gunny bags and ropes. Give scientific reason.
Answer the following questions: 16 × 2 = 32
19. Draw the diagram of a DC dynamo and label the following parts.
(a) Split rings
(b) Armature coil.
20. What is annealing of glass Name the colour obtained when
(i) Ferric compounds
(ii) Cobalt Compounds are added to the mixture of molten glass.
OR
What is pulping 2 How is an *coated paper converted into coated paper ?
21. Draw the diagram of the a PParatus used in electroplating and label the following parts.
(i) Electrolyte
(ii) Anode.
22. Lymph plays an important role in protecting immune system of the body. Justify this statement.
(a) º ºrm tissue adapted to prevent excessive transpiration in plants
(b) Why 49 leaves of lotus plant float on water 2
23. Draw the diagram of blast furnace used in the extraction of iron.
24. Differentiate between caucasoid man and Mongoloid man based on their physical features.
25. What is forward biasing and reverse biasing of a diode 2
OR
What are extrinsic semiconductors 2 Name the two types of extrinsic semiconductors.