ECAT Mock Test 8 - Online MCQ Exam

She cooks, washes dishes, does her homework and then relaxing.

1 Mark(s)

Your Answer:

relaxing then relaxing then
then is relaxing then is relaxing
relaxing is then relaxing is then
then relaxes then relaxes
No correction required No correction required

Two spheres of radii $R$ and $2R$ have densities $\rho$ and $2\rho$ and specific heats $2s$ and $s$. If they are heated to same temp and left to cool, the ratio of rates of cooling ($dT/dt$) is:

1 Mark(s)

Your Answer:

01:01:00 01:01:00
02:01:00 02:01:00
01:02:00 01:02:00
04:01:00 04:01:00

In stable equilibrium, the potential energy of the body is:

1 Mark(s)

Your Answer:

Minimum Minimum
Maximum Maximum
Zero Zero
Constant Constant

Organic chemistry is the branch of chemistry in which we study compounds of:?

1 Mark(s)

Your Answer:

Nitrogen Nitrogen
Carbon Carbon
Oxygen Oxygen
Hydrogen Answer Hydrogen Answer

Three moles of oxygen are mixed with two moles of helium. What is the ratio $C_p/C_v$ of the mixture?

1 Mark(s)

Your Answer:

1.5 1.5
1.47 1.47
1.33 1.33
1.6 1.6

Now, the management graduate can expect to have a prosperous life on a ...... income without having to depend on finding a place in family busiess having to tend the paternal estates.

1 Mark(s)

Your Answer:

professional professional
regular regular
meaningful meaningful
dependable dependable

If plates of a capacitor are pulled apart, keeping battery connected, capacitance:

1 Mark(s)

Your Answer:

Increases Increases
Decreases Decreases
Same Same
Zero Zero

To add or subtract a positive number from both sides of any inequality without any change in the inequality sign is called:

1 Mark(s)

Your Answer:

distributive property of inequality distributive property of inequality
multiplicative property of inequality multiplicative property of inequality
additive property of inequality additive property of inequality
transitive property of inequality transitive property of inequality

Which of the following Element has high the highest first ionization energy value?

1 Mark(s)

Your Answer:

Li Li
B B
C C
Be Answer Be Answer

The nature of metal oxides is

1 Mark(s)

Your Answer:

A) acidic A) acidic
B) basic B) basic
C) neutral C) neutral
D) all of these. (Q. No. 1 to 5): The question below consists of an Assertion (A) and a Reason (R). Use the following key to choose the appropriate answer.

A piece of copper and a piece of germanium are cooled from the room temperature down to 77 K.

1 Mark(s)

Your Answer:

The resistance of each of them increases.
The resistance of each of them decreases.
The resistance of copper decreases and that of germanium increases.
The resistance of copper increases and that of germanium decreases

The bird flew . . . . . . . . my head.

1 Mark(s)

Your Answer:

across across
over over
beside beside
behind behind

Samad purchased 20 dozens of toys at the rate of Rs. 375 per dozen. He sold each one of them at the rate of Rs. 33. What was his percentage profit?

1 Mark(s)

Your Answer:

3.5 3.5
4.5 4.5
5.6 5.6
6.5 6.5

Imprison : Jail : : Exile : __________?

1 Mark(s)

Your Answer:

Country Country
Depart Depart
Banish Banish
Punishment Punishment

Compounds that have the same molecular formula but a different arrangement of atoms in their molecules are called:

1 Mark(s)

Your Answer:

isotopes isotopes
isomers isomers
hydrocarbons hydrocarbons
organic compounds organic compounds

A man travels a distance of 2 km by walking at a speed of 6 km/hr. He returns back at a speed of 4 km/hr. What is his average speed?

1 Mark(s)

Your Answer:

4.5 kmph 4.5 kmph
4.8 kmph 4.8 kmph
5 kmph 5 kmph
5.1 kmph 5.1 kmph

A soap bubble is given a negative charge. Its radius:

1 Mark(s)

Your Answer:

Increases Increases
Decreases Decreases
Remains same Remains same
Fluctuates Fluctuates

Rickets is to Children as Osteomalacia is to?

1 Mark(s)

Your Answer:

Infants Infants
Mother Mother
Adults Adults
Old Old

What is the antonym of ”Pit”?

1 Mark(s)

Your Answer:

group group
peak peak
select select
marry marry

A constant torque of $31.4 N\cdot m$ acts on a pivoted wheel. If angular acceleration is $4\pi \, rad/s^2$, the moment of inertia is:

1 Mark(s)

Your Answer:

$2.5 kg \cdot m^2$ $2.5 kg \cdot m^2$
$5 kg \cdot m^2$ $5 kg \cdot m^2$
$1.5 kg \cdot m^2$ $1.5 kg \cdot m^2$
$125 kg \cdot m^2$ $125 kg \cdot m^2$

The loudness of a sound is directly proportional to the:

1 Mark(s)

Your Answer:

logarithm of pitch logarithm of pitch
logarithm of intensity logarithm of intensity
vibration vibration
logarithm of quality logarithm of quality

At Murree Hills (Assume the value of g changes). If we use a simple pendulum as time standard then one-second duration will_____________?

1 Mark(s)

Your Answer:

Increase Increase
Decrease Decrease
Remains the same Remains the same
Is zero Is zero

To run across means?

1 Mark(s)

Your Answer:

To look around To look around
To meet casually To meet casually
To go from one side to another To go from one side to another
To ignore To ignore

Two chemical species X and Y combine together to form a product P, which contains both X and Y: X + Y → P X and Y cannot be broken down into simpler substances by simple chemical reactions. Which of the following concerning the species X, Y, and P are correct? (i) P is a compound. (ii) X and Y are compounds. (iii) X and Y are elements. (iv) P has a fixed composition.

1 Mark(s)

Your Answer:

A) (i), (ii) and (iii), A) (i), (ii) and (iii),
B) (i), (ii) and (iv) B) (i), (ii) and (iv)
C) (ii), (iii) and (iv) C) (ii), (iii) and (iv)
D) (i), (iii) and (iv) D) (i), (iii) and (iv)

Which equation is not dimensionally correct ?

1 Mark(s)

Your Answer:

E=mc2 E=mc2
Vf=Vi+at Vf=Vi+at
S=Vt2 S=Vt2
S=1/2at2 S=1/2at2

The famous word ‘coulrophobia’ means extreme fear of?

1 Mark(s)

Your Answer:

Colours Colours
Clouds Clouds
Cold Cold
Clowns Clowns

Chemical composition of cinnabar is____________________?

1 Mark(s)

Your Answer:

FeS2 FeS2
HgS HgS
PbS PbS
ZnS ZnS

(1/focal length in meters) is equal to:

1 Mark(s)

Your Answer:

diameter of a lens diameter of a lens
weakness of a lens weakness of a lens
power of a lens power of a lens
quality of lens quality of lens

The sum of the digits of a two-digit number is \$12$. If the digits are reversed, the new number is \$18$ less than the original. Find the original number.

1 Mark(s)

Your Answer:

57 57
65 65
73 73
75 75

After a day’s work, they slept . . . . . .

1 Mark(s)

Your Answer:

soundly soundly
slowly slowly
strangely strangely
severely severely

PERENNIAL

1 Mark(s)

Your Answer:

Frequent Frequent
Regular Regular
Lasting Lasting
Rare Rare

The intruder stood quietly for few moments

1 Mark(s)

Your Answer:

for few time for few time
for the few moments for the few moments
for moments for moments
for a few moments for a few moments
No correction required No correction required

Qadri informed that all of the PAT members _______ soon take back their nomination forms?

1 Mark(s)

Your Answer:

may may
will will
would would
shall shall
none none

He is ___ European.

1 Mark(s)

Your Answer:

a a
an an
the the
no article no article

One mole of ideal gas goes through process $P = P_0 [1 - \frac{1}{2}(V_0/V)^2]$. Temperature at $V=V_0$ is:

1 Mark(s)

Your Answer:

$P_0 V_0 / 2R$ $P_0 V_0 / 2R$
$P_0 V_0 / R$ $P_0 V_0 / R$
$2 P_0 V_0 / R$ $2 P_0 V_0 / R$
$P_0 V_0 / 4R$ $P_0 V_0 / 4R$

The particles emitted from hot cathode surface are:

1 Mark(s)

Your Answer:

negative ions negative ions
positive ions positive ions
protons protons
electrons electrons

Her father _____ yesterday?

1 Mark(s)

Your Answer:

dead dead
died died
has died has died
was died was died
had died had died

Which one does not give borax bead test_________________?

1 Mark(s)

Your Answer:

Copper sulphate Copper sulphate
Barium sulphate Barium sulphate
Cobalt sulphate Cobalt sulphate
Nickel sulphate Nickel sulphate

Which of the following processes is used for the synthesis of cement ?

1 Mark(s)

Your Answer:

dry process dry process
wet process wet process
both both
none none

I will not go to school, if it shall rain tomorrow.

1 Mark(s)

Your Answer:

it would rain tomorrow it would rain tomorrow
it will rain tomorrow it will rain tomorrow
it rains tomorrow it rains tomorrow
No improvement No improvement

Turmeric is a natural indicator. On adding its paste to acid and base separately, which colours would be observed?

1 Mark(s)

Your Answer:

A) Yellow in both acid and base A) Yellow in both acid and base
B) Yellow in acid and red in base B) Yellow in acid and red in base
C) Pink in acid and yellow in base C) Pink in acid and yellow in base
D) Red in acid and blue in base. D) Red in acid and blue in base.

John put . . . . . . . . his clothes and went out.

1 Mark(s)

Your Answer:

on on
in in
through through
with with

A question paper had 10 questions. Each question could only be answered as true(T) of False(F). Each candidate answered all the questions, Yet no two candidates wrote the answers in an identical sequence. How many different sequences of answers are possible?

1 Mark(s)

Your Answer:

20 20
40 40
512 512
1024 1024

Find the value: $25^2$

1 Mark(s)

Your Answer:

600 600
610 610
620 620
625 625

Polyvinyl acetate is the Polymer of __________?

1 Mark(s)

Your Answer:

Vinyl Chloride Vinyl Chloride
Vinyl acetate Vinyl acetate
Formaldehyde Formaldehyde
Methyl methacrylate Methyl methacrylate

The ability of a capacitor to store charge depends upon:

1 Mark(s)

Your Answer:

area of plates area of plates
distance between plates distance between plates
type of dielectric used type of dielectric used
all of above all of above

Arjun has a bachelor's degree from . . . . . . . . University of Madras.

1 Mark(s)

Your Answer:

a a
an an
the the
no article no article

The element californium belongs to a family of :

1 Mark(s)

Your Answer:

A) Alkali metal family A) Alkali metal family
B) Actinide series B) Actinide series
C) Alkaline earth family C) Alkaline earth family
D) Lanthanide series D) Lanthanide series

What is the term used for a reaction in which two water molecules produce ions?

1 Mark(s)

Your Answer:

hydrogenation hydrogenation
halogenation halogenation
dehydration dehydration
self-ionization self-ionization

A car travels from A to B at 40 km/h and returns at 60 km/h. What is the average velocity?

1 Mark(s)

Your Answer:

50 km/h 50 km/h
48 km/h 48 km/h
10 km/h 10 km/h
0 km/h 0 km/h

Energy stored in an inductor:

1 Mark(s)

Your Answer:

$LI^2$ $LI^2$
$1/2 L I^2$ $1/2 L I^2$
$1/2 L^2 I$ $1/2 L^2 I$
$1/2 L I$ $1/2 L I$

Detect analogy : Stool : Table : Chair

1 Mark(s)

Your Answer:

Office Office
Carpet Carpet
Bench Bench
Furniture Furniture

The position of an element in a periodic table is determined by its ___?

1 Mark(s)

Your Answer:

Awagadro Number Awagadro Number
Atomic Number Atomic Number
Atomic Mass Atomic Mass
Proton Number Answer Proton Number Answer

Which one does not exhibit aldol condensation___________________?

1 Mark(s)

Your Answer:

Ethanal Ethanal
Acetone Acetone
Benzaldehyde Benzaldehyde
Butanone Butanone

When hydrogen is added to an alkene, the process is called:

1 Mark(s)

Your Answer:

dehydration dehydration
Dehydrohalogenation Dehydrohalogenation
hydrogenation hydrogenation
hydrochlorination hydrochlorination

Which molecule violates octet rule?

1 Mark(s)

Your Answer:

$\ce{CO2}$ $\ce{CO2}$
$\ce{H2O}$ $\ce{H2O}$
$\ce{SF6}$ $\ce{SF6}$
$\ce{NH3}$ $\ce{NH3}$

As an electrolyte, water is:

1 Mark(s)

Your Answer:

strong strong
neutral neutral
weak weak
good insulator good insulator

The following table depicts the scores of 200 students in a test: Find the probability that a student selected at random has his score in the interval

1 Mark(s)

Your Answer:

A) $\frac{1}{4}$ A) $\frac{1}{4}$
B) $\frac{1}{2}$ B) $\frac{1}{2}$
C) $\frac{1}{8}$ C) $\frac{1}{8}$
D) $\frac{1}{5}$ (\frac{1}{8}\) D) $\frac{1}{5}$ (\frac{1}{8}\)

Which of the following is solid?

1 Mark(s)

Your Answer:

Water Water
Stone Stone
Both Both
None None

The value of ‘g’ is inversely proportional to the square of the Earth's:

1 Mark(s)

Your Answer:

diameter diameter
radius radius
weight weight
area area

Play to the gallery means___________?

1 Mark(s)

Your Answer:

advertise advertise
cater to the public taste cater to the public taste
attempt to appeal to popular taste attempt to appeal to popular taste
depend upon the public for approval depend upon the public for approval

It was indeed a shock for her, but she has later recovered from it.

1 Mark(s)

Your Answer:

since since
then then
afterwards afterwards
No improvement No improvement

A man can row 9 1/3 km/hr in still water and he finds that is thrice as much time to row u p than as to row down the same distance in river. The speed of the current is:________?

1 Mark(s)

Your Answer:

3 1/3 km/hr 3 1/3 km/hr
3 1/9 km/hr 3 1/9 km/hr
1 ¼ km/hr 1 ¼ km/hr
4 2/3 km/hr 4 2/3 km/hr

Find the HCF of \$15$ and \$20$

1 Mark(s)

Your Answer:

3 3
4 4
10 10
5 5

Giant : Dwarf : : Genius : _________?

1 Mark(s)

Your Answer:

Wicked Wicked
Gentle Gentle
Idiot Idiot
Tiny Tiny

What happens if water-soluble vitamins are taken in excess?

1 Mark(s)

Your Answer:

they cause harm they cause harm
they are readily excreted from the body they are readily excreted from the body
they cause no harm they cause no harm
they are not excreted from the body they are not excreted from the body

The resonant circuits that tune radios to particular frequencies are called:

1 Mark(s)

Your Answer:

plate circuits plate circuits
radio circuits radio circuits
filter circuits filter circuits
fiber circuits fiber circuits

A metal ring is dropped through a bar magnet. The acceleration of the ring is:

1 Mark(s)

Your Answer:

Equal to g Equal to g
Less than g Less than g
More than g More than g
Zero Zero

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

1 Mark(s)

Your Answer:

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

_______ Bruce reads in bed?

1 Mark(s)

Your Answer:

Sometimes Sometimes
Never Never
Always Always
Seldom Seldom

The distance between the optical center and the principal focus is known as:

1 Mark(s)

Your Answer:

principal axis principal axis
optical center optical center
principal focus principal focus
focal length focal length

Three coins are tossed and the number of ‘heads’ is recorded. Which of the following lists is a sample space for this experiment?

1 Mark(s)

Your Answer:

A) {1, 2, 3} A) {1, 2, 3}
B) {0, 1, 2} B) {0, 1, 2}
C) {0, 1, 2, 3} C) {0, 1, 2, 3}
D) {0, 1, 2, 3, 4} D) {0, 1, 2, 3, 4}

The Least Common Multiple (LCM) of 40, 50 and 70:

1 Mark(s)

Your Answer:

1800 1800
1400 1400
1200 1200
1600 1600

The number of sequences in which 7 players can throw a ball, so that the youngest player may not be the last is -.

1 Mark(s)

Your Answer:

4000 4000
2160 2160
4320 4320
5300 5300

Chapter 3 Matrices will help you. If you have any query regarding CBSE Class 12 Maths Matrices MCQs Pdf, drop a comment below and we will get back to you at the earliest. -->

1 Mark(s)

Your Answer:

A) A + B = B + A and A + (B + C) = (A + B) + C
B) A + B = B + A and AC = BC B) A + B = B + A and AC = BC
C) A + B = B + A and AB = BC C) A + B = B + A and AB = BC
D) AC = BC and A = BC (B + C) = (A + B) + C We hope the given Maths MCQs for Class 12 with Answers Chapter 3 Matrices will help you. If you have any query regarding CBSE Class 12 Maths Matrices MCQs Pdf, drop a comment below and we will get back to you at the earliest. -->

Even though it is very large house, ......

1 Mark(s)

Your Answer:

there is a lot of space available in it for children
there is hardly any space available for children
there is no dearth of space for children
the servants take a long time to clean it
the municipal taxes on it are very happy

If two dice are thrown together, what is the probability of getting an even number on one dice and an odd number on the other dice?

1 Mark(s)

Your Answer:

1/4 1/4
3/5 3/5
3/4 3/4
1/2 1/2

What is the S.I unit of activity?

1 Mark(s)

Your Answer:

becquerel becquerel
curie curie
candela candela
henry Answer henry Answer

Choose analogous pair: Trilogy : Novel

1 Mark(s)

Your Answer:

Gun : Cartridge Gun : Cartridge
Rice : Husk Rice : Husk
Milk : Cream Milk : Cream
Serial : Episode Serial : Episode

Evaluating Your Answers

ECAT Mock Test 8 : Question 1 of 79