List of top Questions asked in UP Board

What is Ohm's law? Explain by drawing the associated circuit diagram. Also discuss the terms on which the resistance of an electrical conductor depends.
The alkene in the following is:
A solution turns red litmus into blue. The possible pH value of this solution is:
The bond present in chlorine molecules is:
Useful substance in making water bacteria free is:
The reactions in which new compounds are formed by exchange of ions, are called:
The function of xylem in plants is:
In which of the following plants did Mendel perform his experiments on inheritance?
The sun appears whitish:
On which of the following does the resistance of an electrical conductor not depend?
In which combination the four resistors be connected to have minimum resultant resistance?
One needs the help of which of the following rules to know the direction of the magnetic field produced due to a current carrying conductor?
Which of the following metals produces hydrogen gas with cold water?
The alkene in the following is:
Which of the following metals produces hydrogen gas with cold water?
Find the area of a sector whose angle is \( 30^\circ \) of a circle whose radius is 4 cm. Also, find the area of the corresponding major sector.
Divide a 10 cm line segment in the ratio 3:2.
If \( BL \) and \( CM \) are medians of a right triangle \( ABC \) whose \( \angle A = 90^\circ \), then prove that: \( 4(BL^2 + CM^2) = 6 BC^2 \).
Find the values of \( x \) and \( y \) from the following equations: \[ \frac{30}{x - y} + \frac{44}{x + y} = 10 \quad \text{and} \quad \frac{40}{x - y} + \frac{55}{x + y} = 13 \]
If 1 is subtracted from the numerator of a fraction, then it becomes \( \frac{1}{3} \), and if 8 is added to its denominator, then it becomes \( \frac{1}{4} \). Find that fraction.
To have a real and enlarged image of an object by a concave mirror, the position of the object should be:
The unit of the power of the lens is:
When a beam of white light falls on the surface of a triangular prism of glass, it splits, after emerging out from the prism, into various colours with different deviations. Which colour has maximum deviation?
If a copper rod whose diameter is 1 cm and length 8 cm is melted and recasted into another rod whose length is 18 cm, then find the width of the rod.
Find the mean of the following data: