Sample Paper – 2010
Class – X
Subject – SCIENCE
Answer the following questions briefly
Q-1. Name three gaseous air pollutants.
Q-2. Which of the following are non-biodegradable?Glass bottle, paper , aluminum foil, D.D.T., wheat.
Q-3. Name (i) a viral disease of cattle (ii) a bacterial disease of cattle.
Q-4 Name two metals which are lighter than water.
Q-5 Define biological nitrogen fixing.
Q-6 Write the chemical formula of the simplest hydrocarbon.
Q-7 Name the white dwarf which is seen in the sky?
Q-8 Give two examples of colloidal solutions.
Q-9 The oxides of two elements form a very harmful smog. Name these two elements.
Q-10 What is the colour of CuSO4 ? What happens when it is heated ?
Q-11 Why is an internal combustion engine considered safe than external combustion
engine ?
Q-12 If the polar ice caps begin to recede and low-lying land begins to flood with water due to rise
in atmospheric pressure, what damage in composition of air is responsible for it?
Q-13 What are the fossil fuels? Give three examples of it.
Q-14 Is it possible for an organism to occupy position in more than one food chain? Explain.
Q-15 Expand the following abbreviations:
APPLE, IRS, ISRO, ASLV.
Q-16 The distance between the Galaxies A & B is 'x' light years, while that of between
galaxies C&D is 2x light years. In which pair will the 2 galaxies be moving away from each other at higher speed?
Q-17 Explain the terms 1) Volcano 2) Earthquake.
Q-18 Define Isomerism. Write down the structures and names of butane isomers.
Q-19 How does we have try serve as carrier of infective organisms.
Mention two ways to prevent it.
Q-20 What are communication satellites.
Q-21 Why is common salt idoised? Why is Goitre rare amongst people living in coastal areas?
Q-22 What is animal husbandry? Mention the elements of animal husbandry.
Q-23 Water is falling on the blades of a turbine at the rate of 6*103 kg per minute. The height of
the fall is 10 mts. Calculate the power delivered to the turbine (g=10 m/s2).
Q-24 Which is a better way of using cow-dung as a domestic fuel - use of cow-dung cakes or
use of cow-dung in a biogas plant? Give 3 reasons to support your answer.
Q-25 It is said that the energy from nuclear fusion would create fewer pollution problems than energy from fission. Can you reason why?
Q-26 Define a biosphere? What are the 2 main function of a biosphere.
Q-27 What is a smog? What are the two effects of smog?
Q-28 Write 4 differences between a Colloidal solution and suspension.
Q-29 Explain why zinc metal can displace copper from copper sulphate solution, but copper cannot displace zinc from zinc sulphate solution.
Q-30 List 3 advantages of adopting proper management practices for various food resource.
Q-31 Mention any five points of differences between external combustion engine and
internal combustion engine.
Q-32 Mention the characteristic of an ideal fuel.
Q-33 Explain with the help of a diagram, the behaviour of radioactive
rays in electric field.
Paper Submitted By :
Name : GROUP OF TEACHERS
Email :-bhatiasir@ymail.com
Phone No. 9873376655,25983366