Download Science CBSE Sample Paper Class X (10th) 2009

Sample Paper Class X

Science – 2009

(Set-2)

 

General Instructions:

(i)                 The question paper comprises of two sections A an B. You are to attempt both the sections.

(ii)               All questions are compulsory.

 

SECTION A

 

1. What is the direction of magnetic field at a given point?
2. What does a balanced reaction convey to chemist?
3. The filament of an electric lamp which draw a current of 0.2A is used for 5 hours. Calculate the amount of charge following through the circuit?
4. Write name of functional groups in RCOOR’ & RCH₂R’.
5. Out of a bulb 40W-220V and 100W-220V which one would glow brighter when connected in series?(show working of your answer)
6. On what factors does the force experienced by a current carrying conductor placed in a uniform magnetic field depend?
7. Define Chlor alkali.
8. State Joule’s law of heating.
9.  

What kind of curves was plotted by lother meyer? Name 3 element that occur at peak in this curves?

1. What is the composition of solar energy?
2. What is meant by the statement, “Potential difference between points A and B in an electric field is 1 volt”?
3. Name the gas evolved when dilute sulphuric acid acts as sodium carbonate. Write the chemical equation for the reaction involved.
4. What is the function of an earth wire? Why is it necessary to earth metallic appliances?
5. What do you understand by the terms short-circuiting and over loading in an electric supply?
6. State the conditions when it is possible to obtain a real image from a convex mirror .Suppose the focal length of a concave mirror is ‘f’.What is the range of the object distance from the pole for its erect image.
7. What are the drawbacks for a chemical equation? Illustrate it with an example?
8.  

An object 4.0cm in size is placed 25.0cm in front of a concave mirror should a screen be placed in order to obtain a shape image? Find the nature & size of the image?

1.   What happens when a bar magnet is brought near freely suspended other bar magnet.
2. What is the activity series of metals? Rearrange the following metals in an increasing order of reactivity: Aluminum, Zinc, Mercury.

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