List of practice Questions

A bulb rated 60 W operates for 2 hours. How much energy does it consume in this time?
A body of mass 2 kg is moving with a velocity of 3 m/s. What is its kinetic energy?
What is the pH of a \( 0.01 \, \text{M} \) solution of \( \text{NaOH} \)?
What is the oxidation number of sulfur in \( \text{H}_2\text{SO}_4 \)?
Which of the following compounds has the highest boiling point?
What is the pH of a \( 0.01 \, \text{M} \) solution of \( \text{HCl} \)?
Which of the following gases has the highest density at STP?
What is the molecular mass of \( \text{K}_2\text{SO}_4 \)?
What is the wavelength of a sound wave with a frequency of \( 500 \, \text{Hz} \) in air? (Take the speed of sound in air as \( 340 \, \text{m/s} \))
A body of mass 5 kg is moving with a velocity of 15 m/s. What is its momentum?
A body is thrown vertically upwards with an initial velocity of \( 10 \, \text{m/s} \). How high will the body rise? (Take \( g = 10 \, \text{m/s}^2 \))
A parallel plate capacitor has a capacitance of \( 4 \, \mu\text{F} \). If the dielectric constant of the material between the plates is \( 5 \), what will be the new capacitance?
A force of \( 10 \, \text{N} \) acts on a body of mass \( 2 \, \text{kg} \). What is the acceleration of the body?
A ball is dropped from a height of 20 m. What is its velocity just before hitting the ground? (Take \( g = 9.8 \, \text{m/s}^2 \))
A capacitor is charged with a voltage of 100 V. If the capacitance of the capacitor is \( 10 \, \mu\text{F} \), what is the charge on the capacitor?
A body of mass 10 kg is moving with a velocity of 20 m/s. What is the kinetic energy of the body?
What is the area of a triangle with base \( 12 \, \text{cm} \) and height \( 8 \, \text{cm} \)?
Find the derivative of \( f(x) = 4x^3 - 6x^2 + 2x - 5 \).
Find the value of \( x \) in the equation \( 4(x - 2) = 3(x + 5) \).
Find the value of \( \log_2 32 \).
Solve for \( x \) in the equation \( \frac{2x - 3}{4} = 5 \).
Find the derivative of \( f(x) = 3x^2 - 4x + 7 \).
What is the standard electrode potential of a half-reaction in which electrons are transferred from \(Ag^+\) to \(Ag\)?
Which of the following is a characteristic of a coordination compound?
For a first-order reaction, the rate constant is \(k = 0.01 \, \text{s}^{-1}\). What is the half-life of the reaction?