CBSE Guess > Papers > Question Papers > Class X > 2009 > Science > Science Q. 2. What is the shape of the graph between V and I, where V is the potential difference between the ends of an ohmic resistor and I is the current flowing through it? 1 Ans. The graph between V and I is a straight line passing through the origin. Q. 3. State the first limitation of Mendeleev’s periodic table. 1 Ans. Limitation of Mendeleev’s periodic table:
Q. 4. Draw the structure of ethanol molecule. Ans. Ethanol C2H5OH Q. 5. A wire of resistance 20 is bent to form a closed square. What is the resistance across a diagonal of the square? Ans. Total resistance of the wire = 20
CBSE 2009 Question Papers Class X |