CBSE Class 10 Science Question Paper 2012 (3)

CBSE Class 10 Science Question Paper 2012 (3). Students can download the last year question papers using the link below. Free download of examination question papers with solutions. Last 10 year question papers should be practised to get better marks in examinations.

MODEL QUESTION PAPER

X STANDARD – SCIENCE

Section – A

I .Answer all questions 

1.A fruit develops from a single flower with multicarpellary, apocarpous, superior ovary is (Aggregate fruit, composite fruit, simple fruit, multiple fruit)

2.Which of the following constitute a food chain { (Grass, Wheat, Mango), (Grass, goat and Human),(Goat, cow and elephant),(Grass, fish and goat)}

3.Somatic genetheraphy does ( affect the sperm, affect the egg, affect the progency, affect body cell)

4.Pick out the bacterial disease( Meningities, Rabies, Tetanus, Small pox)

5.Mammal’s main excretory product is (Ammonia, Uric acid, Urea, Sodium)

6.When sunlight passes through the window of your house, the dust particles scatter the light making the path of the light visible. This phenomenon is called as (Brownian motion , tyndall effect, Raman Effect , uniform motion)

7.2KClO₃ ---------→ 2KCl + 3O₂ In this chemical reaction MnO2 acts as (reactant, product , catalyst, promoter)

8.Number of groups in modern periodic table is --------------- (7,17,18,8)

9.An amalgam is an alloy of metal with ( carbon, mercury, hydrogen, gold)

10.The saturated hydrocarbons form homologous series with the general formula CnH_2n+2. The formula of the second member in this series is (C₂H₂, C₂H₆,C₂H₄,C₂H₈)

11.Light year is the unit of …………………. (time, light intensity, distance, mass)

12.Mass of an object in 10 Kg. What is its weight on the earth (w=mg, g=9.8m/s2 ) (49 N, 25 N, 98 N, 100 N)

13. Four cells each of emf “E” are joined in parallel to form a battery. The equivalent emf of the battery will be ………………………(4E, E, E/4, E=0)

14 The symbol LED is (        )

15.Electric power can be transmitted over long distance without much loss of energy is an important advantage of ……………..(AC, DC, Both AC & DC ,None)

Section B

II i)Short Answers

ii)Answer any twenty questions. 

16.Match the following disease with suitable causative agents Disease Causative agents

a. Malaria Entamoeba histolytica

b. Typhoid H1N1 Virus.

c. Amoebic dysentery Plasmodium

d. Influenza Salmonella typhi

17.Correct the answer

a. Variation may be defined as the affinities in the charecteristics among the individual the species

b. Evolution is a sudden development from the complex species to simple form

Do you agree with the above statements?

If not give correct statements.

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