10+ Johnson Matthey Interview Questions and Answers

A one to one function is a function where each input has a unique output.

• Also known as an injective function.

• No two inputs can have the same output.

• For example, f(x) = x + 2 is a one to one function.

• However, f(x) = x^2 is not a one to one function as both x and -x have the same output.

The diaphragm contracts and moves downward when you breathe in, and relaxes and moves upward when you breathe out.

• When you breathe in, the diaphragm contracts and moves downward, creating more space in the chest cavity for the lungs to expand.

• This downward movement of the diaphragm also causes the abdomen to expand.

• When you breathe out, the diaphragm relaxes and moves upward, pushing the air out of the lungs.

• The diaphragm plays a crucial role in the process of respiration, he...read more

The expression for the energy of a hydrogen atom is -13.6 eV/n^2.

• The energy of a hydrogen atom is determined by the equation E = -13.6 eV/n^2

• The energy levels of hydrogen are quantized and can be calculated using the Rydberg formula

• The energy of a hydrogen atom can be calculated using the Bohr model

• The energy of a hydrogen atom is related to the ionization energy required to remove an electron

• The energy of a hydrogen atom can be measured using spectroscopy

Anatomy and physiology are branches of biology that study the structure and function of living organisms.

• Anatomy focuses on the structure of organisms, including their organs, tissues, and cells.

• Physiology examines how these structures function and interact with each other.

• Anatomy provides the foundation for understanding physiology.

• Examples of anatomy include studying the different parts of the human body, such as the heart, lungs, and brain.

• Physiology explores processes lik...read more

Degree of freedom refers to the number of ways a molecule can move in space. A diatomic molecule has 5 degrees of freedom.

• Degree of freedom is the number of independent ways a molecule can move in space

• For a diatomic molecule, there are 5 degrees of freedom: 3 translational and 2 rotational

• Translational degrees of freedom refer to movement in x, y, and z directions

• Rotational degrees of freedom refer to rotation about the x and y axes

• The vibrational degree of freedom is not pr...read more

Domain is the set of all possible input values and range is the set of all possible output values of a function.

• Domain can be represented as x-values in a function.

• Range can be represented as y-values in a function.

• Domain and range can be finite or infinite.

• For example, in the function f(x) = x^2, the domain is all real numbers and the range is all non-negative real numbers.

The domain of √x is x≥0 and the range is y≥0.

• The square root of a negative number is undefined in real numbers.

• The square root of 0 is 0.

• The square root of a positive number has two possible values, one positive and one negative.

• The range of √x is always non-negative.

Salting in salting out is a protein purification technique. Protein folding is the process of forming a functional 3D structure. TCA cycle is a metabolic pathway.

• Salting in salting out involves adding or removing salt to precipitate proteins.

• Protein folding is essential for proper protein function and can be disrupted by mutations or environmental factors.

• TCA cycle is a series of reactions that occur in the mitochondria to generate energy from food molecules.

• All three concept...read more

The derivative of x^x is x^x(1+ln(x))

• Use logarithmic differentiation to solve

• Take natural logarithm of both sides

• Apply product rule and chain rule

• Simplify the expression

Opportunity cost is the value of the next best alternative forgone. Deadweight loss is maximum in monopolistic markets. During recession, government implements expansionary fiscal policy. Perfect price discrimination is charging each customer their maximum willingness to pay.

• Opportunity cost is the value of the next best alternative that is given up when a decision is made.

• Deadweight loss is maximum in monopolistic markets where there is no competition to drive prices down to...read more

Conditional probability is the likelihood of an event occurring given that another event has already occurred.

• It is calculated by dividing the probability of the intersection of the two events by the probability of the given event.

• It is denoted by P(A|B), where A is the event we want to find the probability of and B is the event that has already occurred.

• Example: What is the probability of getting a head on the second toss of a coin given that the first toss resulted in a hea...read more

Elastic collision is a type of collision where kinetic energy and momentum are conserved.

• In an elastic collision, the total kinetic energy of the system before and after the collision remains the same.

• Both momentum and kinetic energy are conserved in elastic collisions.

• Objects bounce off each other without any loss of energy in an elastic collision.

• Examples of elastic collisions include billiard balls colliding on a table or two cars colliding head-on without deformation.

Inflammation occurs as a response to injury or infection, involving the release of chemicals and immune cells.

• Inflammation is a protective response by the body to harmful stimuli.

• It involves the release of chemicals such as histamine and cytokines.

• Immune cells, including white blood cells, are recruited to the site of inflammation.

• Inflammation can cause redness, swelling, heat, and pain.

• Examples of inflammation include a sprained ankle, a sore throat, or a skin infection.

Alternating series is a series in which the terms alternate in sign.

• In an alternating series, the terms can be positive or negative, but they alternate in sign.

• The alternating series test states that if the terms of an alternating series decrease in absolute value, then the series converges.

• Examples of alternating series include the alternating harmonic series and the Leibniz formula for pi.

The second law of motion states that the force acting on an object is directly proportional to its mass and acceleration.

• Force = mass x acceleration

• The greater the force applied, the greater the acceleration produced

• The greater the mass of an object, the greater the force needed to accelerate it

• Examples: pushing a heavy box requires more force than pushing a light box; a car requires more force to accelerate than a bicycle

Box potential refers to the maximum potential energy that can be stored in a confined space.

• Box potential is a concept in physics that is used to describe the maximum amount of energy that can be stored in a confined space.

• It is often used in the context of particle physics and quantum mechanics.

• The box potential is determined by the size and shape of the container, as well as the properties of the particles or waves that are confined within it.

• For example, a particle in a on...read more