ECAT Mock Test 15 - Online MCQ Exam

The quotient of -144 and -12 is:

1 Mark(s)

Your Answer:

12 12
−12 −12
16 16
−16 −16

The number of methods to find L.C.M is/are:

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Your Answer:

4 4
3 3
2 2
1 1

Choose analogous pair: Money : Transaction

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Your Answer:

Life : Death Life : Death
Water : Drink Water : Drink
Ideas : Exchange Ideas : Exchange
Language : Conversation Language : Conversation

Hooke's Law states that within the elastic limit:

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Your Answer:

Stress is inversely proportional to Strain
Stress is proportional to Strain Stress is proportional to Strain
Stress is equal to Strain Stress is equal to Strain
Stress is independent of Strain Stress is independent of Strain

The mathematical expression that describes Boyle's law is:

1 Mark(s)

Your Answer:

PV = constant PV = constant
V * constant = P V * constant = P
P * constant = V P * constant = V
V ⁄ P = constant V ⁄ P = constant

The pressure is defined as the force acting per unit:

1 Mark(s)

Your Answer:

volume volume
density density
area area
mass mass

The unit of intensity is:

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Your Answer:

ms-2 ms-2
watt watt
Wm-2 Wm-2
Hz Hz

Which one of the following set of raw material is most suitable for manufacture of urea ?

1 Mark(s)

Your Answer:

CH4 N2 and CO2 CH4 N2 and CO2
H2 N2 and CO H2 N2 and CO
H2 CO2 and H2O H2 CO2 and H2O
H2O N2 and H2 H2O N2 and H2

Which of the following is a group of several vitamins?

1 Mark(s)

Your Answer:

vitamin A vitamin A
vitamin B vitamin B
vitamin C vitamin C
vitamin D vitamin D

If the object is at focal length and it is positive then the mirror is:

1 Mark(s)

Your Answer:

concave mirror concave mirror
convex mirror convex mirror
concave lens concave lens
convex lens convex lens

In the given figure, if O is the centre, AB and CD are equal chords, ∠2 = (133 – 3x)° and ∠2 = (133 – 3x)°, then value of x is:

1 Mark(s)

Your Answer:

A) 28 A) 28
B) 26 B) 26
C) 32 C) 32
D) 31 D) 31

The value of $\left|\begin{array}{ccc} \cos (\alpha+\beta) & -\sin (\alpha+\beta) & \cos 2 \beta \\ \sin \alpha & \cos \alpha & \sin \beta \\ -\cos \alpha & \sin \alpha & \cos \beta \end{array}\right|$ is independent of

1 Mark(s)

Your Answer:

A) α A) α
B) β B) β
C) α, β C) α, β
D) none of these D) none of these

They wanted to hear . . . . . . . . end of the story.

1 Mark(s)

Your Answer:

a a
an an
the the
no article no article

When was . . . . . . . . paper first made?

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Your Answer:

a a
an an
the the
no article no article

On Celsius scale, the interval between the lower and upper fixed points is divided into:

1 Mark(s)

Your Answer:

100 equal parts 100 equal parts
180 equal parts 180 equal parts
50 equal parts 50 equal parts
90 equal parts 90 equal parts

Half-life $T_{1/2}$ is related to decay constant $\lambda$ by:

1 Mark(s)

Your Answer:

$1/\lambda$ $1/\lambda$
$0.693/\lambda$ $0.693/\lambda$
$\lambda/0.693$ $\lambda/0.693$
$0.37/\lambda$ $0.37/\lambda$

Do you think that flying an airplane is a . . . . . experience?

1 Mark(s)

Your Answer:

terrified terrified
terrifying terrifying
terrify terrify
terror terror

The number of atoms in 5 moles of nitrogen atom is:

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Your Answer:

3.01 * 1024 3.01 * 1024
4.1 * 1030 4.1 * 1030
3.9 * 1032 3.9 * 1032
5 * 1056 5 * 1056

The longest wavelength in Lyman series corresponds to transition:

1 Mark(s)

Your Answer:

2 to 1 2 to 1
Infinity to 1 Infinity to 1
3 to 1 3 to 1
4 to 1 4 to 1

A bag contains 50 paise, 1 rupee and 2 rupee coins in the ratio 2:5:8. If the total amount is Rs. 352, find the total number of coins in the bag.

1 Mark(s)

Your Answer:

160 160
200 200
250 250
240 240

Assertion (A): Clinical thermometers are used for measuring the temperature of boiling water. Reason (R): Clinical thermometers have a limited range suitable only for measuring human body temperature.

1 Mark(s)

Your Answer:

A) Both A and R are true and R is correct explanation of the assertion,
B) Both A and R are true but R is not the correct explanation of the assertion,
C) A is true but R is false, C) A is true but R is false,
D) A is false but R is true D) A is false but R is true

An object is placed at a distance of $f/2$ from a convex lens. The image formed is:

1 Mark(s)

Your Answer:

At f, Real At f, Real
At 2f, Virtual At 2f, Virtual
At f, Virtual At f, Virtual
At infinity At infinity

The halogen which reacts very slowly with halogen is________________?

1 Mark(s)

Your Answer:

Fluorine Fluorine
Chlorine Chlorine
Bromine Bromine
Iodine Iodine

Bromine is a non-metal in:

1 Mark(s)

Your Answer:

solid state solid state
liquid state liquid state
gaseous state gaseous state
plasma state plasma state

The words or letters added before a unit and stand for the multiples or sub-multiples of that unit are called:

1 Mark(s)

Your Answer:

mass mass
prefixes prefixes
units units
rate rate

The NOT gate inverts the output of:

1 Mark(s)

Your Answer:

AND gate AND gate
OR gate OR gate
NAND gate NAND gate
NOT gate NOT gate

What is the nearest meaning of the following idiom: “Spring a tap”?

1 Mark(s)

Your Answer:

Pull a prank Pull a prank
Initiate a conversation Initiate a conversation
Trick someone into doing or saying something
Start an argument Start an argument

Synonym of “effigy” is _________?

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Your Answer:

proxy proxy
profundity profundity
boldness boldness
exit exit

Maryam, accompanied by her brother, __________ at the party.

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Your Answer:

is is
are are
was was
were were

Amna was engaged _________ Asim.

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Your Answer:

with with
from from
to to
None None

An observer moves towards a stationary source of sound. The frequency heard is:

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Your Answer:

Increased Increased
Decreased Decreased
Same Same
Zero Zero

Vander Waals forces are stronger in_______________?

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Your Answer:

F2 F2
Cl2 Cl2
Br2 Br2
I2 I2

My room is infested _________ insects.

1 Mark(s)

Your Answer:

In In
On On
From From
With With

One of the following is the chief source of water and soil pollution

1 Mark(s)

Your Answer:

A) Agro industry A) Agro industry
B) Mining B) Mining
C) Thermal power stations C) Thermal power stations
D) All of these D) All of these

The largest size of bamboo that can be placed in a square of area 100 sq.meters is__________?

1 Mark(s)

Your Answer:

10m 10m
14.14m 14.14m
20m 20m
25m 25m

The phosphate present in sewage water which cause eutrophication Can be removed by adding:

1 Mark(s)

Your Answer:

Alum Alum
Chlorine Chlorine
Lime Lime
permangnate permangnate

The oxidation state of group IIIA metals is:

1 Mark(s)

Your Answer:

-3 -3
3 3
0 0
1 1

A person who loves everybody:

1 Mark(s)

Your Answer:

Cosmopolitan Cosmopolitan
Fratricide Fratricide
Altruistic Altruistic
Aristocrat Aristocrat

Pipes A and B can fill a tank in 5 and 6 hours respectively. Pipe C can empty it in 12 hours. If all the three pipes are opened together, then the tank will be filled in?

1 Mark(s)

Your Answer:

1 13/17 hours 1 13/17 hours
2 8/11 hours 2 8/11 hours
3 9/17 hours 3 9/17 hours
4 1/2 hours 4 1/2 hours

The rate constant of a reaction depends upon

1 Mark(s)

Your Answer:

A) temperature of the reaction A) temperature of the reaction
B) extent of the reaction B) extent of the reaction
C) initial concentration of the reactants
D) the time of completion of reaction D) the time of completion of reaction

Two charges are placed in air, then in a medium with $K=81$. The force becomes:

1 Mark(s)

Your Answer:

$81F$ $81F$
$F/81$ $F/81$
$F/9$ $F/9$
$9F$ $9F$

An ideal gas undergoes a cyclic process ABCA returning to the initial state. The net work done is:

1 Mark(s)

Your Answer:

Zero Zero
Positive infinite Positive infinite
Area enclosed by loop Area enclosed by loop
Negative infinite Negative infinite

The PH of milk is __________?

1 Mark(s)

Your Answer:

6.0 6.0
6.5 6.5
7.0 D.7.5 7.0 D.7.5

Which of the following is true about monosaccharides?

1 Mark(s)

Your Answer:

they cannot be hydrolyzed they cannot be hydrolyzed
they can be hydrolyzed they can be hydrolyzed
they have sour taste they have sour taste
they are insoluble in water they are insoluble in water

Two numbers are in the ratio 5 : 3. If the sum of the numbers is 128, then the smaller number is

1 Mark(s)

Your Answer:

A) 80 A) 80
B) 48 B) 48
C) 45 C) 45
D) None of these D) None of these

Pi bonds are produced by overlapping of__________________?

1 Mark(s)

Your Answer:

Un-hybrid orbitals Un-hybrid orbitals
Hybrid orbitals Hybrid orbitals
Hybrid and un hybrid orbitals Hybrid and un hybrid orbitals
atomic orbital and hybrid orbital atomic orbital and hybrid orbital

The length of a rectangle is halved, while its breadth is tripled. What is the percentage change in area?

1 Mark(s)

Your Answer:

25% increase 25% increase
50% increase 50% increase
50% decrease 50% decrease
75% decrease 75% decrease

Evaluating Your Answers

ECAT Mock Test 15 : Question 1 of 47