List of top Questions asked in UP Board X

In the following statements, the true statement is :

If the points A (6, 1), B (8, 2), C (9, 4) and D (7, 3) are the vertices of a parallelogram, taken in order, the point of intersection of diagonals will be :

The seventeenth term of the A. P. : 3, 8, 13, ... will be :

The roots of the quadratic equation $x^2 + 5x + 6 = 0$ will be :

In linear equation $\frac{x}{3} + \frac{y}{2} = 6$ if $x = 9$ then the value of $y$ will be :

The sum of zeroes of the quadratic polynomial $x^2 + 2x + 5$ will be :

LCM of the numbers 12 and 20 will be :

The value of Tan A + Cot A will be :

If tan A = √3, then the value of Sec A will be :

HCF of the numbers 49 and 91 will be :

LCM and HCF of two numbers are 182 and 13 respectively. If one number is 26, then other number will be :

What is a Redox reaction? Explain with a balanced chemical equation.

Write the chemical name, formula, and two main uses of Plaster of Paris.

What is the difference between Roasting and Calcination? Give one example of each.

Explain the mechanism of Pulmonary Circulation (Double Circulation) in the human heart.

How is the sex of a child determined in humans? Explain using a flow chart.

State Mendel’s Law of Dominance and explain it with a monohybrid cross.

What is the Ozone Layer, and how is it getting depleted?

Define Ohm’s Law and describe an experiment to verify it.

State Fleming’s Left-Hand Rule and explain its application in an electric motor.

Calculate the equivalent resistance of three resistors \( R_1, R_2, R_3 \) connected in parallel.

If \( \tan(A + B) = \sqrt{3} \) and \( \tan(A - B) = \frac{1}{\sqrt{3}} \), find the values of \( A \) and \( B \).

Prove the identity: \(\displaystyle \frac{\cos A}{1 + \sin A} + \frac{1 + \sin A}{\cos A} = 2 \sec A.\)

A 1.5 m tall boy is standing at some distance from a 30 m tall building; find the distance he walked towards the building if the angle of elevation of the top increases from \(30^\circ\) to \(60^\circ\).

Prove that the lengths of tangents drawn from an external point to a circle are equal.