AP PGECET- 2018(Nano Technology)

The system of matrix equations AX = B will have a unique solution if

A bag contains 3 red, 6 white and 7 blue balls. Two balls are drawn at random. The probability that the balls drawn are one white and one blue is

There are n(>2) boys sitting in a row, two of them are selected at random. Then the probability that those two are not sitting side by side is

Using Picard’s method, the first approximate of ỳ = 1 + xy, y(0) = 1 with h = 0.1 is

The value of y1, by Euler’s method of ỳ = y – x, y(0) = 2 and h = 0.2 is

Percentage of free space in FCC and in BCC packing is, respectively

Graphene is a

The most important property of nano material is

As the size of a gold particle decreases into the nanoscale regime, the melting point

The size of a quantum dot is around _____ nm.

Moment of intertia of a triangular section of base (b) and height (h) about an axis passing through its C.G and parallel to the base, its

Moment of inertia of a rectangular section having width (b) and depth (d) about an axis passing through its C.G. and parallel to the width (b), is

If the side of a cube is 4 cm and its total surface area is 96 cm². When the same cube is divided into eight cubes, what will be the total surface area?

How many oxygen atoms lined up in a row would fit in a one nanometer space?

What are the three major alloying elements of austenitic stainless steels?

Which of the following elements has the highest Hall-Patch constant (σ, MPa)

When a body is subjected to a direct tensile stress (σ) in one plane, then tangential or shear stress on an oblique section of the body inclined at an angle θ to the normal of the section is

The Rankine’s formula holds good for

Examples of superconducting materials with Tc > 35 K include all but one of the following. Which is the odd one out?

Thin films of TiC are

The efficiency of today’s best solar cell is around

The maximum frictional force, which comes into play, when a body just begins to slide over the surface of the other body, is known as

The Net Positive Suction Head(NPSH) of a centrifugal pump is defined as the sum of the velocity head and the pressure heat at the

The general relationship between speed N, head H, power P and discharge Q for a centrifugal pump is

Which one of the following is expected when a drop of water is dispersed on a hydrophobic surface such aortic stenosis Teflon?

Which ratio decided the efficiency of nano substances?

Permalloy, an alloy consisting of about 20% Fe and 80% Ni, is an example of a

Two like parallel forces are acting at a distance of 24 mm apart and their resultant is 20N. If the line of action of the resultant is 6 mm from any given force, the two forces are

The pressure exerted by an ideal gas is _____ of the kinetic energy of all the molecules contained in a unit volume of gas.

Which of the following forced convection heat transfer equation accounts for the liquid viscosity effect for viscous liquids?

A globe valve is the most suitable for applications, in which

A simply supported beam of span L carries a uniformly distributed load W. The maximum bending moment M is

A cubic crystal consist of three atoms A, B C. If A is placed in alternative corners, B placed in alternative face centres and C is placed in alternative edge centers, what is the formula of solid?

Which of the following is an example of top-down approach for the preparation of nanomaterials?

Which of the following is not an example of nanoscience in nature?

Cast iron has high _____ strength.

Which of the following has highest theoretical surface area?

What is the simplest formula of the solid whose cubic unit cell are the atoms A at each corner and atoms B at each face centre and C atoms at body centre?

At a triple point

Which ratio decides the efficiency of nanosubstance?

A flow in which each particle has a definite path and their paths do not cross each other, is called

The Grashoff number is defined aortic stenosis the ratio of the

Which type of crystals are generally good optical reflectors?

Prevention of corrosion of iron by Zn coating is called ______

Zirconium alloys are used in nuclear reactors aortic stenosis

Which of the following material has over lapping energy bands

Internal energy of a perfect gas depends on

Slow plastic deformation of metals under a constant stress is known as

In a bar of large length when held vertically and subjected to a load at its lower end, its own-weight produces additional stress. The maximum stress will be

Annealing twins are not observed in

Proteins are made up of

Rivets are generally specified by

What is the effect of temperature on stiffness of a metal?

When are the slip lines observed?

Example for a thermosetting polymer is

Which dislocation is not confined to a slip plane?

The correct order of the co-ordination number in simple cubic, body centered cubic and face centered cubic of unit cell is

A gas which obeys kinetic theory perfectly is known as

The general energy equation is applicable to

Oxygen which is liberated during the photosynthesis comes from ____

Entropy of the universe is

Which of the following processes must violate the first law of thermodynamics?

The number of translational degree of freedom for a diatomic gas is

What is the common reinforcement for polymer composites?

Fermi energy level for n-type extrinsic semiconductor lies

Example for strengthening mechanism in single-phase material

a ≠ b ≠ c and α = β = γ = 90^o is characterized by which of the following crystal system?

In equilibrium condition, fluids are not able to sustain

Second law of thermodynamics is concerned with

A cycle consisting of one constant pressure, one constant volume and two isentropic process is known as

The heat supplied to the gas at constant volume is (where m = mass of gas, c_v = Specific heat at constant volume, c_p = Specific heat at constant pressure, T₂ – T₁ = Rise in temperature, and R = Gas constant)

Which of the following energy transfer processes cannot occur in solid?

1. Conduction
2. Convection
3. Radiation

Which of the following statements are true about the Eutectic point on a two component (compounds A and B) phase diagram?

One mole of which of the following has the highest entropy?

The metal that is often mixed for corrosion resistance in stainless steels is

The permanent magnets are made from which of the following materials?

Which instrument is used to measure velocity?

An isolated system can exchange _____ with its surrounding

In an irreversible process, there is a

For the constant pressure and heat input, the air standard efficiency of gas power cycle is in the order

Chemical vapor deposition involves depositing nano particulate material from the ______ phase.

Different conditions favouring electro deposition are

Fourier’s law of conduction is valid only for

The physical property of a material that refers to the temperature at which a ferromagnetic material becomes paramagnetic on

What is the purpose of molybdenum in steel alloying?

Which of the following is not a Hume-Ruthery condition?

Which of the following gives materials in order of decreasing values of permeability?

If the density in a fluid flow changes with respect to length of direction of flow, it is called

Heat energy can be obtained from other type of energy is the statement of

In typical nanomaterials the majority of the atoms are located on the _____ of the particles

The size of a nanoparticle is

Mobility of electron is

Which is the hardest metal of the following?

Examples of superconducting materials has Tc < 35K

What type of steel has 0.8% carbon and 100% pearlite?

The surface area of Graphene is around

Room temperature slip system in F.C.C. is

The correct relation between equilibrium constant and free energy change is

What is the relation between brake efficiency, internal efficiency and mechanical efficiency?

As pressure approaches zero, the ration of fugacity to pressure (f/P) for a gas approaches

Stage III in single crystal deformation is due to

Gun metal is an alloy of

Which of the following has the minimum atomic mass?

The nanomaterials, often used in water purifiers is

The thermal conductivity of an SWNT along length is _____ watt/(m.K)

One mole of which of the following has the highest entropy?

The physical property of a material that refers to the temperature at which a ferromagnetic material becomes paramagnetic on

An edge dislocation can move into a different slip plane by

In face-centered cubic lattice, the most closely packed planes are

In a bucky ball, each carbon atom is bound to _____ adjacent carbon atoms.

The ideal gas-refrigeration cycle is similar to

1 m = ____ nm.