Free BMST Science Questions and Answers 1 — Questions and Answers

Question 1: What is the boiling point of water?

0 degrees Celsius
50 degrees Celsius
100 degrees Celsius (Correct answer)
200 degrees Celsius

Correct answer: 100 degrees Celsius

Explanation: The boiling point of water, at standard atmospheric pressure, is 100 degrees Celsius (212 degrees Fahrenheit). This is the temperature at which water changes from a liquid to a gas phase, forming water vapor.

Question 2: What is the freezing point of water?

0 degrees Celsius (Correct answer)
50 degrees Celsius
100 degrees Celsius
-10 degrees Celsius

Correct answer: 0 degrees Celsius

Explanation: The freezing point of water, at standard atmospheric pressure, is 0 degrees Celsius (32 degrees Fahrenheit). This is the temperature at which water changes from a liquid to a solid phase, forming ice.

Question 3: A pull or a push applied or exerted on an object is:

Energy
Force (Correct answer)
Velocity
Distance

Correct answer: Force

Explanation: A pull or a push applied or exerted on an object is referred to as force. Force is a vector quantity that can cause an object to accelerate, decelerate, or change its direction of motion. It is measured in Newtons and can be exerted through various means such as physical contact, gravity, or electromagnetic fields.

Question 4: The ability to do work is:

Velocity
Force
Energy (Correct answer)
Heat

Correct answer: Energy

Explanation: Energy is the ability to do work. It is a fundamental concept in physics that describes the capacity of a system to perform physical or mechanical tasks. It can exist in various forms such as kinetic energy, potential energy, thermal energy, etc. Energy is required to overcome resistance or exert force on an object in order to perform work. Therefore, energy is the correct answer as it directly relates to the ability to do work.

Question 5: ____________ is said to be done when a force of 1Newton moves an object of mass 1 gram, 1 meter in the direction of the force.

Force
Time
Energy
Work (Correct answer)

Correct answer: Work

Explanation: Work is said to be done when a force of 1 Newton moves an object of mass 1 gram, 1 meter in the direction of the force. Work is a measure of the energy transfer that occurs when an object is moved by a force applied to it. In this scenario, the force of 1 Newton is applied to move the object of mass 1 gram over a distance of 1 meter, which meets the definition of work.

Question 6: _____________ is the speed in a given direction; rate of motion with direction.

Velocity (Correct answer)
Work
Energy
Temperature

Correct answer: Velocity

Explanation: Velocity is a vector quantity that describes the rate of an object's motion in a specific direction. It encompasses both speed and direction, distinguishing it from speed, which is scalar. Velocity provides a comprehensive understanding of an object's movement, reflecting both how fast it's moving and the path it's taking.

Question 7: Which of the following energy sources is characterized by the process of nuclear fusion?

Coal
Solar (Correct answer)
Natural Gas
Geothermal

Correct answer: Solar

Explanation: Solar energy is derived from the nuclear fusion reactions occurring in the sun, where hydrogen atoms combine to form helium, releasing a tremendous amount of energy. This process powers the sun and provides the Earth with radiant energy in the form of sunlight.

Question 8: What does Newton's second law of motion state?

Force is directly proportional to mass times acceleration. (Correct answer)
Force is inversely proportional to acceleration.
Force is directly proportional to mass.
Force is inversely proportional to mass.

Correct answer: Force is directly proportional to mass times acceleration.

Explanation: Newton's second law of motion states that force is directly proportional to acceleration. Here's a breakdown of the law: Force is any push or pull that can cause an object to change its motion. Acceleration is the rate of change of an object's velocity (speed and direction). The greater the acceleration, the faster the change in motion. The law essentially states that the greater the force applied to an object, the greater the acceleration it will experience. Conversely, a smaller force will result in a smaller acceleration.

Question 9: According to Boyle's Law, what happens to the volume of a gas if its pressure is increased while keeping the temperature constant?

Volume increases
Volume decreases (Correct answer)
Volume remains the same
Volume becomes zero

Correct answer: Volume decreases

Explanation: Boyle's Law (P1V1 = P2V2) states that, at constant temperature, the volume of a gas is inversely proportional to its pressure. Increasing pressure leads to a decrease in volume and vice versa.

Question 10: Charles' Law describes the relationship between the volume and temperature of a gas at constant pressure. What does the law state?

Volume is inversely proportional to temperature.
Volume is directly proportional to temperature. (Correct answer)
Volume is inversely proportional to pressure.
Volume is directly proportional to pressure.

Correct answer: Volume is directly proportional to temperature.

Explanation: Charles' Law (V1/T1=V2/T2) explains that, at constant pressure, the volume of a gas is directly proportional to its absolute temperature. As temperature rises, volume increases.

Question 11: Which of the following is a fundamental principle of classical mechanics that describes the relationship between force, mass, and acceleration?

Coulomb's Law
Kepler's Law
Newton's Second Law (Correct answer)
Boyle's Law

Correct answer: Newton's Second Law

Explanation: Newton's Second Law (F = ma) defines the relationship between force, mass, and acceleration. Force equals mass multiplied by acceleration, determining an object's motion under applied forces.

Free BMST Science Questions and Answers 1

What is the boiling point of water?