Chemistry

Out of about 30 questions that appeared on the test, 20 are given below.

Which one of these processes is used for the preparation of ethers?

Bayer's Process

Kolbe's electrolytic process

Williamsons Reaction

Haber's Process

The total number of crystal systems are:

three

five

seven

infinite

Which one of the following is a secondary alcohol?

(a) (b) (c)

(d) None of the above

How many amino acid units are there in DNA (deoxyribonucleic acid)?

10

18

27

30

What is the formula of Epsom salt?

MgSO4.7H2O

MgSO3.5H2O

MgCO3.7H2O

none of the above

Maximum temperature at which epsom salt remains is

100°C

150°C

250°C

300°C

Which temperature is not present in the lifecycle of epsom salt?

200°C

300°C

400°C

500°C

The size and shape of orbitals are given by

principal quantum number.

principal and magnetic quantum number.

principal, angular and magnetic quantum number.

None of these

Glacial acetic acid is

anhydrous.

concentrated.

dilute.

very dilute.

Which will have a greater boiling point?

Ethane

Methane

n-Butane

2-Butene

The study of thermochemistry is based on

Dalton's atomic theory

1st law of thermodynamics

2nd law of thermodynamics

3rd law of thermodynamics

Which prevents wood from moisture?

Alcohol

Aldehyde

Acid

None

To prepare a carboxylic acid KCN is treated with?

Alcohol

Aldehyde

Alkyl halide

Alkene

Questions regarding molality and molarity.

Definition of molarity

Hydrogen bonding is not given by

Chlorine

Sulphur

Nitrogen

Fluorine

Maximum yield of N2 + 3H2 —> 2NH3 is given at

Low temp. and low pressure

High temp. and low pressure

High temp. and high pressure

Low temp. and high pressure

Pure silicon exists as

semi-conductor

metal

non-metal

superconductor

Glass is made of ___.

Which is the hardest metal?

Lithium (Li)

Sodium (Na)

Potassium (K)

Magnesium (Mg)

MathematicsnCr = ?

n-1Cr

nCr-n

nCn-r

None

ι57 = ?

-ι

1

ι

0

Which is correct?

If a matrix of order 3 x 4 is A, -A will be a matrix __ of A?

Multiplicative inverse

4 x 3 order

conjugate

None

Questions regarding the use of quadratic formula.

Consider the series 1 + 3 + 5 + 7 + .... S28 = ?

1170

2700

1800

1500

Questions related to Exercise 6.11 of the FSc Mathematics Textbook (1st Year).

Questions related to probability.

What will be the 8th term in the binomial expansion of (x - 2y)27?

If sec θ = 9/4, cos θ =

4/9

3/6

8/3

1/4

Questions requiring to calculate areas of triangles from the given lengths of the three sides, using Hero's formula. Note: Answer choices were given in fractions.

Formulae of circum-radius, inscribed radius and escribed radius.

Questions related to the calculation of circum-radius, inscribed radius and escribed radius. (Much like those in the textbooks.)

If f (x, y) = 0.5x + 8y, f (0, 0) =

5

8

1

0

What is the derivative of the function f (x) =

?

0

1

2

-1

What is the derivative of the function f (x) = (x2 + 2)100?

100(x2 + 2)99

200(x2 + 2)99

100(x2 + 2)101

99(x2 + 2)100

FPRIVATE "TYPE=PICT;ALT=integral of sin x w.r.t. x from o to Pi"

integral of sin x w.r.t. x from o to Pi= ?

0

1

2

4

Slope of a line parallel to x-axis is

1

0

∞

2

A point on a Cartesian co-ordinate system represents a directed distance from

origin

x-axis

y-axis

all

Definition of parallelogram.

A point on x-axis at distance 3 units is

(0, 3)

(3,0)

(-3,3)

(3,-3)

For three lines to be concurrent = ?

1

0

2

None

A vector [i, j] represents

a point.

an ordered pair.

another vector.

none of these.

Two questions related to trigonometric questions.

e

1/e

e-2

e3

Probability that an event will not happen is

0

1

- 1

Calculate the area under the curve y = x2 from x = 0 to x = 4.

Physics

Out of about 60 questions that appeared on the test, 41 are given below.

Which cancer is cured by using Sr-90?

Brain tumor

Chest cancer

Skin cancer

None of the above

Which of the following is affected by fast-moving neutrons?

U-235

U-238

both of these

none of these

Which one of the following is affected by slow neutrons?

U-235

U-238

both of these

none of these

Which one of the following DOES NOT USE solar energy?

Fissile element

Oil

Coal

Gas

According to Bohr's atomic model, electrons in an atom radiate energy

continuously.

when they jump from a higher energy level to a lower energy level.

radial.

when they collapse into the nucleus.

The visible region of the electromagnetic spectrum is called

Lyman series

Balmer series

Paschen series

Brackett series

The ultraviolet region of the electromagnetic spectrum is called

Lyman series

Balmer series

Paschen series

Pfund series

Two satellites are approaching each other by a speed of c/2. According to an observer on a 3rd spaceship, the combined speed of the two satellites will be

0

c/4

c

c2

The work done by a force F through a displacement d is given as Fdcosθ, where θ is the angle between F and d. In what condition, the value of work shall be positive?

θ < 90°

θ > 90°

θ = 90°

F = d

The angle between the three coils in a three-phase generator is

0°

60°

120°

180°

The wave fronts of light emitted out of a small light bulb are

spherical.

cylindrical.

plane.

none of the above.

The electric field of a point charge is ___ in shape.

spherical

spherical symmetrical

plane

cylindrical

The central region of a transistor is called

emitter

collector

base

depletion region

The majority charge carriers in an N-type semi-conductor are

positive ions

negative ions

electrons

holes

Pure silicon exists as a

insulator

semi-conductor

conductor

superconductor

Time period T is the reciprocal of

frequency f

wavelength λ

amplitude xo

energy E

Two overlapping waves

alter each other's path.

don't alter each other's path.

obstruct each other.

ALWAYS result into a wave of zero amplitude.

According to special theory of relativity, if mass is const then we can increase the velocity by increasing

kinetic energy (K. E.)

potential energy (P. E.)

internal energy U

all of the above

Dimensions of Planck's constant (h):

[ML2T-1]

[ML2T-2]

[M2LT-1]

None of these

Cross product of two parallel vectors is

O (null vector)

0

1

None of these

If the instantaneous acceleration of a body is equal to its average acceleration, the body is moving with

Uniform velocity

Uniform acceleration

Both of these

None of these

Impulse =

F/t

t/F

F x t

Ft

What will be the orientation of two neutrons undergoing elastic collision and one is stopped?

All of these

If r1, r2, r3, ... represents the radii of orbits of an atom, the position energy for an atom of one orbit will be in

r1

r2

Nucleus

None

Which is a non-renewable source of energy?

Tides

Biomass

fuel

solar heat

In a = -ω2x, a and x are directed

in the same direction.

in the opposite direction.

parallel.

perpendicular.

Two sources are said to be coherent, if the lights emitted by them have a path difference of

nλ

(n + 1)λ

n + ½λ

(n/2)λ

In X-ray diffraction a crystal acts as

one-dimensional.

two-dimensional.

three-dimensional.

None.

The magnification is defined as

(Image Height) / (Object Height)

(Object Height) / (Image Height)

(Image Height) x (Object Height)

(Image Height)-1 x (Object Height)-1

Angular magnification is

I/O

O/I

θi / θo

θo / θi

Images formed concave mirror are

Virtual

Erect

Real

Both (a) and (c)

Increase in temperature causes a change in

state

motion of molecules

increase in internal energy

None of these

The units of electric flux are

NC-1m2

NC-1m-1

NC-1m

None

Which the best material to be used for a standard resistance wire?

copper

tungsten

Nichorme

silver

The alignment of domains in a material is disturbed by

cooling.

heating.

both (a) and (b).

none of these.

A charged particle moving in a direction perpendicular to a magnetic field will adopt the direction of motion in

circle

parabola

hyperbola

straight

The reverse process of annihilation is

materialization.

combustion.

ignition.

none.

If the mass of a body is doubled, its de-Broglie's wavelength is

reduced to one-half.

reduced to one-fourth.

reduced to one-third.

doubled.

The weakest forces exist between

proton-proton.

proton-neutron.

proton-gravity.

electron-gravity.

A hot body and a cold body are joined together. What is the effect on the entropy of the system?

It increases.

It decreases.

It remains the same.

None of these.

The square of ø in Schrodinger's equation represents the ___ of an electron.

location

probability

position

momentum