Download CBSE Science Sample Papers Class X (10th) 2009
Sample Paper – 2009
Class – X
Subject – Science
(Set-6)
Time: 2½ Hrs. Section A Mm: 60
Q 1. Give one use of anhydrous calcium chloride. (1)
Q 2. Why is electrolysis of distill water is not possible. How it is made possible. (1)
Q 3. A student obtains resistance of 16?, 12?, 4?, 3? only by using two metallic resistances wires either separately or joined together. What is the value of each resistor? (1)
Q 4. Give a condition when Snell law fails. (1)
Q 5. Why is series arrangement not satisfied for domestic circuit? (1)
Q 6. A current through a horizontal power line flows east to west direction. What is the direction of magnetic field at a point directly below it? Which rule you will apply in this regard. (1)
Q 7. A drop of water is poured over a white powdery substance ‘J’. I was observed the ‘J’ turns in blue substance ‘K’.
(i) What is white powdery substance ‘J’?
(ii) What is blue coloured substance ‘K’ and give nature of ‘K’. Give equation to convert ‘K’ to 'J’. (2)
Q 8. A nichrome wire has a resistance of 5?. Find the resistance of another nichrome wire, whose length is four times and area of cross section is three times the first wire. (2)
Q 9. What is meant by frequency of an alternate current?
What is its value in India?
Why is alternate current considered to be advantageous over direct current for long-range transmission of electric energy? (2)
Q 10. What is rainbow? How it is caused. (2)
Q 11. A compound ‘X’ gained importance as a important symbol in our struggle for freedom. This movement was popularly known as Mahatama Gandhi’s Dandi March. Compound ‘X’ was found to possess m.p. =1074K
(a) Identify the compound.
(b) Write the nature of chemical bond found in between atoms of this compound.
(c) Write any two physical properties other than its mp. & b.p. (3)
Q 12. Define Modern Periodic law. Who gave the concept of this law?
How does electronegativity of an element vary on moving from-?
(i) Left to right in a period.
(ii) From top to bottom in a group. (3)
Q 13. A straight copper conductor, whose ends are connected to a sensitive galvanometer, is moved up and down in a strong magnetic field.
(i) State your observations and name the phenomenon.
(ii) What is the nature of induced current generated in the conductor?
(iii) What kind of energy transformation takes place in the above experiment and name the scientist who done above experiment. (3)
Q 14. (a) Draw a flow chart to show steps involved in extraction of metals from ore.
(b) Draw a labeled diag showing action of steam on metals. (3)
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