JEE Main Mock Test 10 - Online MCQ Exam

Which of the following helps in the formation of hemoglobin?

1 Mark(s)

Your Answer:

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

The SI unit of Pressure is:

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Your Answer:

Newton Newton
Pascal Pascal
Joule Joule
Watt Watt

Find the LCM of \$20$ and \$30$

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Your Answer:

40 40
50 50
80 80
60 60

$\ce{KMnO4}$ in acidic medium acts as:

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Your Answer:

Reducing agent Reducing agent
Oxidizing agent Oxidizing agent
Catalyst Catalyst
Indicator only Indicator only

A man swims downstream 30 km and upstream 18 km taking 3 hours each time, what is the speed of the man in still water?

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Your Answer:

2 kmph 2 kmph
8 kmph 8 kmph
16 kmph 16 kmph
4 kmph 4 kmph

In the given figure, the value of x is:

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Your Answer:

A) 23° A) 23°
B) 123° B) 123°
C) 117° C) 117°
D) 63° D) 63°

The color of the earth wire is:

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Your Answer:

red or brown red or brown
green or yellow green or yellow
black or blue black or blue
white or pink white or pink

Which of the following will not act as a tranquilizer?

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Your Answer:

A) Equanil A) Equanil
B) Analgin B) Analgin
C) Meprobamate C) Meprobamate
D) Chlordiazepoxide D) Chlordiazepoxide

Magnification produced by a rear-view mirror fitted in vehicles is:

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Your Answer:

Less than 1 Less than 1
More than 1 More than 1
Equal to 1 Equal to 1
Depends on distance Depends on distance

In A.C generator increasing the no. of turns in the coil:

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Your Answer:

decreases the Electromotive force (EMF) decreases the Electromotive force (EMF)
Electromotive force (EMF) remains same Electromotive force (EMF) remains same
increases the Electromotive force (EMF) increases the Electromotive force (EMF)
Electromotive force (EMF) becomes zero Electromotive force (EMF) becomes zero

If the equation a(y + z) = x, b(z + x) = y, c(x + y) = z have non-trivial solutions then the value of $\frac{1}{1+a}+\frac{1}{1+b}+\frac{1}{1+c}$ is

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Your Answer:

A) 1 A) 1
B) 2 B) 2
C) -1 C) -1
D) -2 D) -2

Product of time period and frequency is ____________?

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Your Answer:

Time period Time period
Frequency Frequency
Unity Unity
Velocity Velocity

The average of non-zero number and its square is 5 times the number. The number is__________?

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Your Answer:

9 9
17 17
29 29
295 295

Electronegativity is highest for:

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Your Answer:

Oxygen Oxygen
Nitrogen Nitrogen
Fluorine Fluorine
Chlorine Chlorine

A number is an irrational if and only if its decimal representation is:

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Your Answer:

A) non-terminating A) non-terminating
B) non-terminating and repeating B) non-terminating and repeating
C) non-terminating and non-repeating C) non-terminating and non-repeating
D) terminating D) terminating

Consider a planet moving in an elliptical orbit around the sun. Work done by the gravitational force in one complete revolution is:

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Your Answer:

Positive Positive
Negative Negative
Zero Zero
Depends on orbit eccentricity Depends on orbit eccentricity

Which of the following angles is the measure of an acute angle?

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Your Answer:

A) 30° A) 30°
B) 90° B) 90°
C) 120° C) 120°
D) 240° D) 240°

(x – 6) (x – 6) =

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Your Answer:

A) x 2 – 36 A) x 2 – 36
B) x 2 + 36 B) x 2 + 36
C) x 2 – 6x + 36 C) x 2 – 6x + 36
D) x 2 – 12x + 36 D) x 2 – 12x + 36

A sound wave has a frequency of 3 KHz and wavelength 20 cm. How much will it take to travel 2 km?

1 Mark(s)

Your Answer:

4.2 s 4.2 s
3.33 s 3.33 s
3.9 s 3.9 s
4.65 s 4.65 s

The product of the mass of a body and velocity is equal to its:

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Your Answer:

inertia inertia
momentum momentum
force force
friction friction

Alkyl halides are considered to be very reactive compounds towards nucleophile because_________________?

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Your Answer:

they have an electrophilic carbon they have an electrophilic carbon
they have an electrophilic carbon & a good leaving group
they have an electrophilic carbon & a bad leaving group
they have a nucleophilic carbon & a good leaving group

Compounds have atoms of:

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Your Answer:

same sizes same sizes
different sizes different sizes
same electrons same electrons
different electrons different electrons

A needle placed 45 cm from a lens forms an image on a screen placed 90 cm on the other side. The type and focal length of the lens are:

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Your Answer:

Concave, 30 cm Concave, 30 cm
Convex, 30 cm Convex, 30 cm
Convex, 15 cm Convex, 15 cm
Concave, 15 cm Concave, 15 cm

By solving the equation √x + 2 = 4, the value of 'x' will be:

1 Mark(s)

Your Answer:

12 12
14 14
11 11
13 13

In SI base units, 1 Bq is equal to __________ ?

1 Mark(s)

Your Answer:

10 disintegration per second 10 disintegration per second
1.5 disintegration per second 1.5 disintegration per second
0.01 disintegration per second 0.01 disintegration per second
1 disintegration per second 1 disintegration per second

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

The percentage of nitrogen in urea is________________?

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Your Answer:

36% 36%
46% 46%
56% 56%
66% 66%

As compared to water, mercury is denser:

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Your Answer:

12 times 12 times
11.5 times 11.5 times
15 times 15 times
13.6 times 13.6 times

Weathering of rocks is an example of ___________

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Your Answer:

A) Both physical and chemical changes A) Both physical and chemical changes
B) Physical change B) Physical change
C) Chemical change C) Chemical change
D) None of these D) None of these

Which of the following is an example of a solid solution?

1 Mark(s)

Your Answer:

A) Sugar dissolved in water A) Sugar dissolved in water
B) Salt dissolved in water B) Salt dissolved in water
C) Gold dissolved in copper C) Gold dissolved in copper
D) Carbon dioxide dissolved in water D) Carbon dioxide dissolved in water

Assertion (A) 10+9+$\frac{6}{10}$ + $\frac{7}{100}$ = 19.67 Reason (R) $\frac{1}{10}$ = 0.1 and $\frac{1}{100}$ = 0.01

1 Mark(s)

Your Answer:

A) Both Assertion and Reason are true and Reason is the correct explanation of Assertion.
B) Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
C) Assertion is true but Reason is false.
D) Assertion is false but Reason is true.

Lattice energy is highest for:

1 Mark(s)

Your Answer:

$\ce{NaCl}$ $\ce{NaCl}$
$\ce{MgO}$ $\ce{MgO}$
$\ce{KCl}$ $\ce{KCl}$
$\ce{CaCl2}$ $\ce{CaCl2}$

If $x - 9 = 16$, find $x$

1 Mark(s)

Your Answer:

22 22
23 23
24 24
25 25

When numbers are associated with weights, then the obtained mean is said to be:

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Your Answer:

weighted arithmetic mean weighted arithmetic mean
harmonic mean harmonic mean
standard mean standard mean
geometric mean geometric mean

At what digit of PH scale PH is neutral?

1 Mark(s)

Your Answer:

5 5
3 3
7 7
10 10

Which functional group is characteristics of ester?

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Your Answer:

R-OR R-OR
R-CO-R R-CO-R
R-CO-OR R-CO-OR
R-CO-OH Answer R-CO-OH Answer

A material whose at least one side is curved is called:

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Your Answer:

mirror mirror
lens lens
optic fiber optic fiber
prism prism

Voltaic cell is a_________________?

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Your Answer:

irreversible cell irreversible cell
reversible cell reversible cell
alkaline cell alkaline cell
all of the above all of the above

DNA is found in:

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Your Answer:

cytoplasm cytoplasm
vacuole vacuole
cell nucleus cell nucleus
none of above none of above

Which of the following is used in oxy-acetylene torches for welding and cutting metals?

1 Mark(s)

Your Answer:

Ethyne Ethyne
ethene ethene
ethane ethane
methane methane

A tank is filled by three pipes with uniform flow. The first two pipes operating simultaneously fill the tank in the same during which the tank is filled by the third pipe alone. The second pipe fills the tank 5 hours faster than the first pipe and 4 hours slower than the third pipe. The time required by the first pipe is?

1 Mark(s)

Your Answer:

6 hrs 6 hrs
10 hrs 10 hrs
15 hrs 15 hrs
30 hrs 30 hrs

A particle is projected vertically up. The time taken to go from height $h$ to maximum height $H$ is:

1 Mark(s)

Your Answer:

$\sqrt{\frac{2(H-h)}{g}}$ $\sqrt{\frac{2(H-h)}{g}}$
$\sqrt{\frac{2H}{g}}$ $\sqrt{\frac{2H}{g}}$
$\sqrt{\frac{2h}{g}}$ $\sqrt{\frac{2h}{g}}$
$\sqrt{\frac{H-h}{g}}$ $\sqrt{\frac{H-h}{g}}$

A Carnot engine has the same efficiency between $1000K$ and $500K$ and between $x K$ and $1000K$. The value of $x$ is:

1 Mark(s)

Your Answer:

$1500 K$ $1500 K$
$750 K$ $750 K$
$2000 K$ $2000 K$
$1250 K$ $1250 K$

The quantities whose values vary continuously or remain constant are known as:

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Your Answer:

analogue quantities analogue quantities
digital quantities digital quantities
negative quantities negative quantities
positive quantities positive quantities

Scurvy is caused by the deficiency of:

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Your Answer:

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

For which position maximum blood pressure in the body have the smallest value ?

1 Mark(s)

Your Answer:

Standing straight Standing straight
Sitting on chair Sitting on chair
Sitting on ground Sitting on ground
Laying horizontally Laying horizontally

Ammonia may be prepared by heating ammonium chloride with_______________?

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Your Answer:

Water Water
NaCl NaCl
Aqueous sodium hydroxide Aqueous sodium hydroxide
H2SO4 H2SO4

The number of protons and neutrons in the nucleus if the atomic number of an element is 17 and the mass number is 35, is:

1 Mark(s)

Your Answer:

17 and 18 17 and 18
17 and 19 17 and 19
17 and 20 17 and 20
17 and 21 17 and 21

Dioptre power of an concave lens of 10 cm focal length is_______________?

1 Mark(s)

Your Answer:

10 dioptre 10 dioptre
10 dioptre 10 dioptre
1 / 10 dioptre 1 / 10 dioptre
1 / 10 dioptre 1 / 10 dioptre

The “Day Length” at a specific location is calculated as:

1 Mark(s)

Your Answer:

A) Sunset time + Sunrise time A) Sunset time + Sunrise time
B) Sunset time ÷ 2 B) Sunset time ÷ 2
C) Sunset time – Sunrise time C) Sunset time – Sunrise time
D) (Sunrise + Sunset) ÷ 2 (A) is followed by a statement of Reason (R). Choose the correct option as:

What is the chemical name of Marble?

1 Mark(s)

Your Answer:

Acaraj (3HCL + HNO3) Acaraj (3HCL + HNO3)
Calcium carbonate (CaCO3) Calcium carbonate (CaCO3)
Methane (CH4) Methane (CH4)
Silicon Oxide (SiO2) Answer Silicon Oxide (SiO2) Answer

The octane number of zero is assigned to____________?

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Your Answer:

2-methyl octane 2-methyl octane
n-heptane n-heptane
iso-octane iso-octane
3-methyl octane 3-methyl octane

The region of higher density of particles in a longitudinal sound wave is called

1 Mark(s)

Your Answer:

A) Rarefaction A) Rarefaction
B) Trough B) Trough
C) Compression C) Compression
D) Crest. D) Crest.

Which statement is wrong ?

1 Mark(s)

Your Answer:

the amount of ozone layer is greater in the region close to the equator
ozone acts as filter for UV radiations ozone acts as filter for UV radiations
in the equatorial region it acts as pollutant
CFCs play effective role in removing O3 in the stratosphere

To prevent lightning from damaging tall buildings, we use:

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Your Answer:

lightning conductors lightning conductors
lightning capacitors lightning capacitors
lightning insulators lightning insulators
lightning gases lightning gases

The acceleration of a projection on the diameter for a particle moving along a circle is_______________?

1 Mark(s)

Your Answer:

w2x w2x
wx2 wx2
w2x w2x
wx2 wx2

P and Q started a business investing Rs. 85,000 and Rs. 15,000 respectively. In what ratio the profit earned after 2 years be divided between P and Q respectively?

1 Mark(s)

Your Answer:

3:4 3:4
3:5 3:5
15:23 15:23
17:23 17:23
None of these None of these

Which law states that the volume of a given amount of gas held at constant pressure is directly proportional to the Kelvin temperature?

1 Mark(s)

Your Answer:

Charles’ Law Charles’ Law
Avogadro’s Law Avogadro’s Law
Graham’s Law Graham’s Law
Boyle’s law Boyle’s law

Conductivity is the reciprocal of:

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Your Answer:

Resistance Resistance
Resistivity Resistivity
Conductance Conductance
Current Current

Carbon forms four covalent bonds by sharing its four valence electrons with four univalent atoms, e.g., hydrogen. After the formation of four bonds, carbon attains the electronic configuration of

1 Mark(s)

Your Answer:

A) helium A) helium
B) neon B) neon
C) argon C) argon
D) krypton D) krypton

Heating a magnet will ____________________?

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Your Answer:

weaken it weaken it
strengthen it strengthen it
reverse its polarity reverse its polarity
demagnetize it completely demagnetize it completely

Cations possess __________ charge?

1 Mark(s)

Your Answer:

+ve +ve
-ve -ve
Neutral Neutral
None None

Find the greatest number that exactly divides 35, 91 and 840?

1 Mark(s)

Your Answer:

5 5
6 6
7 7
8 8

Enzyme specificity is:

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Your Answer:

Substrate specificity Substrate specificity
General activity General activity
Multiple substrates Multiple substrates
No specificity No specificity

Hypochlorous acid is used for disinfecting the water it reacts with the dissolved ammonia producing___________________?

1 Mark(s)

Your Answer:

NH2Cl NH2Cl
NHCI2 NHCI2
NCI2 NCI2
all of the above all of the above

If a body covers equal distance in equal intervals of time then its speed is:

1 Mark(s)

Your Answer:

variable variable
uniform uniform
equal equal
constant constant

Acetate buffer contains:

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Your Answer:

$\ce{CH3COOH/CH3COONa}$ $\ce{CH3COOH/CH3COONa}$
$\ce{CH3COOH}$ only $\ce{CH3COOH}$ only
$\ce{CH3COONa}$ only $\ce{CH3COONa}$ only
$\ce{HCl/NaCl}$ $\ce{HCl/NaCl}$

What is the effect of the base on blue litmus paper?

1 Mark(s)

Your Answer:

it remains blue it remains blue
it turns pink it turns pink
it turns red it turns red
it becomes colorless it becomes colorless

Quantum number which tells the energy of electron is________________?

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Your Answer:

n n
1 1
m m
s s

The number of possible states that a switch has been:

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Your Answer:

3 3
2 2
4 4
5 5

On heating aldehydes with Fehlings solution we get a precipitate whose colour is_________________?

1 Mark(s)

Your Answer:

pink pink
black black
yellow yellow
brick red brick red

The number of methods to find square root of an algebraic expression are:

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Your Answer:

3 3
4 4
5 5
2 2

Sameena started a software business by investing Rs. 50,000. After six months, Nida joined her with a capital of Rs. 80,000. After 3 years, they earned a profit of Rs. 24,500. What was Saneena’s share in the profit?

1 Mark(s)

Your Answer:

Rs. 9423 Rs. 9423
Rs. 10,250 Rs. 10,250
Rs. 12,500 Rs. 12,500
Rs. 14,000 Rs. 14,000
None of these None of these

Find the greatest number which is such that when 697, 909 and 1227 are divided by it, the remainders are all the same?

1 Mark(s)

Your Answer:

53 53
112 112
108 108
106 106

Evaluating Your Answers

JEE Main Mock Test 10 : Question 1 of 74