ECAT Mock Test 16 - Online MCQ Exam

If the concentration, temperature, and pressure is changed, the system responds in a way that:

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Your Answer:

follows the change follows the change
opposes the change opposes the change
does not change at all does not change at all
encourages the change encourages the change

Any two angles in the same segment of a circle are:

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Your Answer:

equal equal
not equal not equal
reflective reflective
opposite opposite

Let A = {1, 2, 3} and consider the relation R = {(1, 1), (2, 2), (3, 3), (1, 2), (2, 3), (1, 3)}. Then R is

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Your Answer:

A) reflexive but not symmetric A) reflexive but not symmetric
B) reflexive but not transitive B) reflexive but not transitive
C) symmetric and transitive C) symmetric and transitive
D) neither symmetric, nor transitive D) neither symmetric, nor transitive

Methylamine is more basic than ammonia because:

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Your Answer:

=+I effect =+I effect
=-I effect =-I effect
Larger size Larger size
Steric factors Steric factors

Tincal is a mineral of___________________?

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Your Answer:

A1 A1
Si Si
B B
C C

At the end of three years what will be the compound interest at the rate of 10% p.a. on an amount of Rs.20000?

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Your Answer:

Rs.6620 Rs.6620
Rs.6500 Rs.6500
Rs.6800 Rs.6800
Rs.6400 Rs.6400

Something which is capable of being seen through is known as _____________?

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Your Answer:

Opaque Opaque
Coarse Coarse
Ambiguous Ambiguous
Transparent Transparent

The value of mean proportional to 20, 45 should be:

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Your Answer:

±30 ±30
−30 −30
−900 −900
±900 ±900

Octane rating of Gasoline can be increased by __________?

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Your Answer:

Refining Refining
Cracking Cracking
Reforming Reforming
None of These None of These

Boron is non metal while other elements of IIIA group are metals. This is because______________?

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Your Answer:

it has small size it has small size
it has high nuclear charge it has high nuclear charge
it forms molecular addition compounds it forms molecular addition compounds
all of the above all of the above

If $x^4 + \frac{1}{x^4} = 47$, find $x^3 + \frac{1}{x^3}$

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Your Answer:

18 18
20 20
22 22
24 24

If the numerator of a fraction is increased by 20% and its denominator is diminished by 25% value of the fraction is 2/15. Find the original fraction.

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Your Answer:

1/12 1/12
1/8 1/8
1/6 1/6
1/4 1/4

Which conservation law is a consequence of the isotropy of space?

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Your Answer:

Conservation of Energy Conservation of Energy
Conservation of Angular Momentum Conservation of Angular Momentum
Conservation of Linear Momentum Conservation of Linear Momentum
Conservation of Charge Conservation of Charge

For anti-parallel vectors angle is equal to ____________?

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Your Answer:

90° 90°
180° 180°
270° 270°
None of these None of these

Using all the letters of the word “NOKIA”, how many words can be formed, which begin with N and end with A?

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Your Answer:

3 3
6 6
24 24
120 120

Bilal is getting __________ the car.

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Your Answer:

Out of Out of
Out Out
Out from Out from
Out has Out has

2 resistances of 4kΩ and 6kΩ are joined in series, if a battery of 10 V is connected across the ends then, the current passing through each of the resistance is:

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Your Answer:

1 mA 1 mA
10 mA 10 mA
5 mA 5 mA
2 mA 2 mA

What is the linear momentum of a body of mass $m$ moving with velocity $v$?

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Your Answer:

$mv^2$ $mv^2$
$mv$ $mv$
$1/2 mv^2$ $1/2 mv^2$
$ma$ $ma$

A child could not have done this mischief.

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Your Answer:

This mischief could not be done by a child.
This mischief could not been done by a child.
This mischief could not have been done by a child.
This mischief a child could not have been done.

I’m sure to profit _____ his lecture.

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Your Answer:

From From
At At
By By
On On

Stefan's Law states that total energy radiated per unit surface area per unit time is proportional to:

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Your Answer:

$T$ $T$
$T^2$ $T^2$
$T^3$ $T^3$
$T^4$ $T^4$

A number leaves a remainder of 5 when divided by 7 and a remainder of 2 when divided by 9. Which of the following could be?

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Your Answer:

A) 39 A) 39
B) 47 B) 47
C) 53 C) 53
D) 61 D) 61

The minimum velocity required to project a body so that it never returns to Earth is called:

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Your Answer:

Orbital Velocity Orbital Velocity
Terminal Velocity Terminal Velocity
Escape Velocity Escape Velocity
Critical Velocity Critical Velocity

2 × 3 × 7 is the prime factorization of

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Your Answer:

A) 21 A) 21
B) 1237 B) 1237
C) 237 C) 237
D) 42 D) 42

A particle of mass $m$ moves along the line $y=d$ with velocity $v$. The angular momentum about the origin is:

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Your Answer:

Zero Zero
$mvd/2$ $mvd/2$
$mvd$ $mvd$
Variable Variable

RACE : FATIGUE ::

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Your Answer:

Fasting : Hunger Fasting : Hunger
Round : Boxing Round : Boxing
Flower : Color Flower : Color
Hiking : Gangrene Hiking : Gangrene

Which of the following word could be a subject?

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Your Answer:

next next
see see
sea sea
over over

Oxidation of primary alcohol gives________________?

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Your Answer:

ketone ketone
Aldehyde Aldehyde
Alkene then – COOH Alkene then – COOH
Ester Ester

Process in which water is allowed to stand in a reservoir is called:

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Your Answer:

sedimentation sedimentation
coagulation coagulation
filtration filtration
chlorination chlorination

What is the general formula of alkanes?

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Your Answer:

CnH2n+2 CnH2n+2
CnH2n CnH2n
CnH2n-2 CnH2n-2
CnHn CnHn

Product of [H+] and [OH-] is always:

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Your Answer:

1 x 10-10 1 x 10-10
1 x 10-4 1 x 10-4
1 x 10-14 1 x 10-14
1 x 10-7 1 x 10-7

He met a man who lived in USA last year. What is ” who ” according to grammar here?

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Your Answer:

Interrogative Pronoun Interrogative Pronoun
Distributive Pronoun Distributive Pronoun
Relative Pronoun Relative Pronoun
Reciprocal Pronoun Reciprocal Pronoun

In the figure given below, AD is a straight line. PS and QR are perpendicular to AD. GHis parallel to IJ and KL is parallel to MN. (i) What type of angles are ∠r and ∠t ?

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Your Answer:

A) Adjacent angles A) Adjacent angles
B) Vertically opposite angles B) Vertically opposite angles
C) Corresponding angles C) Corresponding angles
D) Alternate exterior angles ∴ ∠r = ∠t Hence, ∠r and ∠t are corresponding angles. (ii) The measure of ∠s = 120°. What is the measure of ∠t ?

The perimeter of a rectangle is 60m. If it’s length is twice its breadth then its area is__________?

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Your Answer:

160m2 160m2
180m2 180m2
200m2 200m2
220m2 220m2

Angles between 0° and 90° lies in:

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Your Answer:

2nd quadrant 2nd quadrant
3rd quadrant 3rd quadrant
1st quadrant 1st quadrant
4th quadrant 4th quadrant

A safe level of noise depends on:

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Your Answer:

level of noise and exposure to noise level of noise and exposure to noise
area area
pitch pitch
frequency frequency

The dot product of two mutually perpendicular non-zero vectors is:

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Your Answer:

Zero Zero
1 1
$AB$ $AB$
Infinite Infinite

In parallel combination the voltage passing through each resistor is:

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Your Answer:

same same
different different
low voltage low voltage
high voltage high voltage

What is the average of 1, 2, 3, 4, 5?

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Your Answer:

3 3
5 5
4 4
0 0

This is an apple. . . . . . . . . apple is red.

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Your Answer:

a a
an an
the the
no article no article

My wife and I bought _______ last week.

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Your Answer:

Pieces of new furniture Pieces of new furniture
Any new furniture Any new furniture
Some new furniture Some new furniture
A lot of new furniture A lot of new furniture

The students in our school are __________ in other schools.

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Your Answer:

smarter smarter
smarter than smarter than
smarter than those smarter than those
more smarter than more smarter than

Choose analogous pair: Food : Hungry

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Your Answer:

Thought : Politics Thought : Politics
Water : River Water : River
Rest : Weary Rest : Weary
Wine : Intoxication Wine : Intoxication

The candidates shall abide ______ all directions, instructions and regulations issued by the department.

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Your Answer:

on on
with with
by by
to to

During dry weather, while combing hair, sometimes we experience hair flying apart. The force responsible for this is [NCERT Exemplar]

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Your Answer:

A) force of gravity A) force of gravity
B) electrostatic force B) electrostatic force
C) force of friction C) force of friction
D) magnetic force D) magnetic force

A sound wave travels through air and enters water. Which of the following statements is correct regarding the change in its properties?

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Your Answer:

A) Its speed, frequency, and wavelength all increase.
B) Its speed and wavelength increase, but frequency remains constant.
C) Its speed decreases while frequency increases.
D) Its wavelength decreases but frequency remains constant.

Which of the following numbers is both a multiple of 7 and an even number?

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Your Answer:

A) 14 A) 14
B) 21 B) 21
C) 35 C) 35
D) 49 D) 49

Pentane has the molecular formula C 5 H 12 . It has

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Your Answer:

A) 5 covalent bonds A) 5 covalent bonds
B) 12 covalent bonds B) 12 covalent bonds
C) 16 covalent bonds C) 16 covalent bonds
D) 17 covalent bonds D) 17 covalent bonds

A boat of 8 meters and 40 meter long floats on water. If 125000 N of cargo is added, it will sink:

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Your Answer:

10 cm 10 cm
4 cm 4 cm
15 cm 15 cm
20 cm 20 cm

Which of the following is a writing practice against legal and ethical considerations, considered a violating rule of technical writing?

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Your Answer:

Legalities Legalities
Functionalities Functionalities
Ethicalities Ethicalities
Ethics Ethics

What is happening . . . . . . . . this picture?

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Your Answer:

at at
from from
of of
in in

Ce58 is a member of__________?

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Your Answer:

S-block S-block
P-block P-block
d-block d-block
f-block f-block

Calcarious material includes_________________?

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Your Answer:

lime stone lime stone
marble marble
chalk chalk
all of the above all of the above

What is the value of $\frac{25}{5} + 3 \times 2$?

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Your Answer:

10 10
11 11
13 13
15 15

Which one of the following is the weakest acid in water__________________?

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Your Answer:

HF HF
HCI HCI
HBr HBr
HI HI

On my way home, I stopped _____ a phone call.

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Your Answer:

For make For make
To make To make
For making For making
Making Making

Antonym of “matutinal” is ________.

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Your Answer:

paternal paternal
crepuscular crepuscular
maritime maritime
marsupial marsupial

The SI unit of Frequency is:

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Your Answer:

Second Second
Hertz Hertz
Meter Meter
Joule Joule

The categories of waves are:

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Your Answer:

3 3
4 4
2 2
5 5

The value of gravitational acceleration is approximately:

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Your Answer:

15 ms−2 15 ms−2
25 ms−2 25 ms−2
10 ms−2 10 ms−2
5 ms−2 5 ms−2

If θ is said to be an acute angle, and 4 cos2 θ - 1 = 0, then what is the value of tan (θ - 150)?

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Your Answer:

1 1
√2 √2
1/√3 1/√3
None of the above None of the above

The radius of curvature of the reflecting surface of a spherical mirror is $R$. Its focal length $f$ is:

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Your Answer:

$R/2$ $R/2$
$2R$ $2R$
$R$ $R$
$R/3$ $R/3$

Transesterification is:

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Your Answer:

Acid exchange Acid exchange
Ester hydrolysis Ester hydrolysis
Ester-alcohol exchange Ester-alcohol exchange
Esterification Esterification

If $a + b = 10$ and $ab = 21$, find $a^2 + b^2$

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Your Answer:

52 52
56 56
58 58
62 62

A photon of wavelength 900nm behaves like a particle of mass______________?

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Your Answer:

5.53 x 10-36kg 5.53 x 10-36kg
0 kg. 0 kg.
2.46 x 10-36kg 2.46 x 10-36kg
1.84 x 10-44kg 1.84 x 10-44kg

The number of images formed by two plane mirrors inclined at $60^\circ$ is:

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Your Answer:

6 6
5 5
4 4
3 3

Evaluating Your Answers

ECAT Mock Test 16 : Question 1 of 66