JEE Main Mock Test 9 - Online MCQ Exam

Addition of hydrogen to ethene forms:

1 Mark(s)

Your Answer:

methane methane
propane propane
butane butane
ethane ethane

In the following figure, O is the centre of the circle PAB and A OAB is equilateral. The measure of Z APB is equal to

1 Mark(s)

Your Answer:

A) 60° A) 60°
B) 45° B) 45°
C) 40° C) 40°
D) 30° D) 30°

The orbital speed of a satellite orbiting close to Earth's surface is approx:

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Your Answer:

$8 km/s$ $8 km/s$
$11.2 km/s$ $11.2 km/s$
$3 km/s$ $3 km/s$
$9.8 m/s$ $9.8 m/s$

Boiling of water in an open container is an example of:

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Your Answer:

Isobaric process Isobaric process
Isochoric process Isochoric process
Adiabatic process Adiabatic process
Isothermal process Isothermal process

1252 * 23 + 35000 = (?)2

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Your Answer:

200 200
400 400
1600 1600
800 800

When a body is whirled in a horizontal circle by means of a string the centripetal force is supplied by______________?

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Your Answer:

Mass of a body Mass of a body
Velocity of body Velocity of body
The tension in the string The tension in the string
Centripetal acceleration Centripetal acceleration

An example of scalar quantity is _________?

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Your Answer:

Displacement Displacement
Speed Speed
Velocity Velocity
Acceleration Acceleration

What is \$68\%$ of \$200$?

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Your Answer:

130 130
136 136
142 142
148 148

If * is a binary operation on set of integers I defined by a * b = 3a + 4b – 2, then find the value of 4 * 5.

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Your Answer:

A) 35 A) 35
B) 30 B) 30
C) 25 C) 25
D) 29 D) 29

Water that contains H-2 atoms is called:

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Your Answer:

heavy water heavy water
light water light water
pure water pure water
chlorinated water chlorinated water

The value of 198 2 – 197 2 is

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Your Answer:

A) 393 A) 393
B) 395 B) 395
C) 295 C) 295
D) 293 D) 293

The age of fossil when C-14: C-12 in bone is one fourth of ratio in bone of living animal and half-life of C-14 is 5732 years is:

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Your Answer:

100 years 100 years
11460 years 11460 years
1000 years 1000 years
1200 years 1200 years

When a compressed gas is allowed to pass through a nozzle of a jet into a region of low pressure it produces?

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Your Answer:

Fusion Fusion
Cooling Cooling
Expansion Expansion
Vaporization Answer Vaporization Answer

The property which increases upto group IV-A then decreases on wards_______________?

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Your Answer:

Ionization energy Ionization energy
Atomic radii Atomic radii
Melting & boiling points Melting & boiling points
Atomic volume Atomic volume

The thermosphere is divided into how many layers?

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Your Answer:

two two
three three
four four
five five

Temperature coefficient usually:

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Your Answer:

Always 2 Always 2
2-3 times per 10°C 2-3 times per 10°C
Always 10 Always 10
Decreases Decreases

On solving the equation -9m - 48 = -75, the value of 'm' will be:

1 Mark(s)

Your Answer:

11 11
5 5
3 3
7 7

A chocolate cupcake costs 90 cents. The maximum number of cakes the customer can buy with 12 dollars are:

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Your Answer:

x < 20 x < 20
x < 15 x < 15
x < 16 x < 16
x < 18 x < 18

In the reverse reaction SO3 decomposes in to:

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Your Answer:

S and O S and O
S and O2 S and O2
S2 and O S2 and O
SO2 and O2 SO2 and O2

Bypassing hydrogen gas through vegetable oil, it is converted in to:

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Your Answer:

butter butter
milk milk
ghee ghee
condensed milk condensed milk

Proteins work in the body to:

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Your Answer:

transport and store oxygen and nutrients
speed up reactions speed up reactions
regulate important systems regulate important systems
all of above all of above

An object 4 cm high is placed at a distance of 12 cm from a concave lens, If the focal length is 8 cm then the position of the object is:

1 Mark(s)

Your Answer:

20 cm 20 cm
25 cm 25 cm
24 cm 24 cm
22 cm 22 cm

White vitriol is:

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Your Answer:

$\ce{ZnSO4.7H2O}$ $\ce{ZnSO4.7H2O}$
$\ce{CuSO4.5H2O}$ $\ce{CuSO4.5H2O}$
$\ce{FeSO4.7H2O}$ $\ce{FeSO4.7H2O}$
$\ce{MgSO4.7H2O}$ $\ce{MgSO4.7H2O}$

The value of 5 2 x 5 -2 is

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Your Answer:

A) 1 A) 1
B) 5 B) 5
C) 5 4 C) 5 4
D) 5 -4 D) 5 -4

The principle of 'LASER' is:

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Your Answer:

Spontaneous Emission Spontaneous Emission
Scattering Scattering
Stimulated Emission Stimulated Emission
Refraction Refraction

Glycerol is:

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Your Answer:

Monohydric Monohydric
Trihydric Trihydric
Dihydric Dihydric
Tetrahydric Tetrahydric

A rod of length $1m$ is heated by $100^\circ C$. It is prevented from expanding. If $Y = 2 \times 10^{11}, \alpha = 10^{-5}$, the compressive stress is:

1 Mark(s)

Your Answer:

$2 \times 10^8 Pa$ $2 \times 10^8 Pa$
$2 \times 10^7 Pa$ $2 \times 10^7 Pa$
$10^9 Pa$ $10^9 Pa$
$2 \times 10^{11} Pa$ $2 \times 10^{11} Pa$

The solution set of equation x² - 9 = 0 is:

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Your Answer:

{±4} {±4}
{4} {4}
{±2} {±2}
{±3} {±3}

What will be the remainder when 636 is divided by 215?

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Your Answer:

3 3
2 2
1 1
None of the above None of the above

In multiplication and division of measurement______________?

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Your Answer:

Percentage uncertainties are added Percentage uncertainties are added
Absolute uncertainties are added Absolute uncertainties are added
Percentage uncertainties are divided Percentage uncertainties are divided
Absolute uncertainties are divided Absolute uncertainties are divided

The power is transmitted over long distances and high voltages to:

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Your Answer:

minimize the energy loss minimize the energy loss
maximize the energy loss maximize the energy loss
make energy content constant make energy content constant
preserve energy preserve energy

Synthetic resins are used in places where:

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Your Answer:

air resistance is required air resistance is required
water resistance is required water resistance is required
friction is required friction is required
adhesion is required adhesion is required

In what ratio must a grocer mix two varieties of tea worth Rs. 60 a kg and Rs. 65 a kg so that by selling the mixture at Rs. 68.20 a kg he may gain 10%?

1 Mark(s)

Your Answer:

3 : 2 3 : 2
3 : 4 3 : 4
3 : 5 3 : 5
4 : 5 4 : 5

__________ is one of the allotropic modifications of carbon.

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Your Answer:

Silicon Silicon
Diamond Diamond
Iodine Iodine
Graphite Graphite

Shielding effect across the period_________________?

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Your Answer:

Increases Increases
Decreases Decreases
Can not be predicted Can not be predicted
Remains constant Remains constant

Which of the following noble gases is not present in atmosphere?

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Your Answer:

Argon Argon
Helium Helium
Radon Radon
Xenon Xenon

Two numbers are 30% and 37% are less than a third number .How much percent is the second number less than the first?

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Your Answer:

15% 15%
12% 12%
10% 10%
5% 5%

The rate of displacement of a body is called its:

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Your Answer:

non-uniform speed non-uniform speed
non-uniform velocity non-uniform velocity
velocity velocity
speed speed

Find the amount on Rs.5000 in 2 years, the rate of interest being 4% per first year and 5% for the second year?

1 Mark(s)

Your Answer:

Rs.460 Rs.460
Rs.5640 Rs.5640
Rs.5460 Rs.5460
Rs.5604 Rs.5604

Direct conversion of solids into vapours is called ___________________?

1 Mark(s)

Your Answer:

Solvent extraction Solvent extraction
sublimation sublimation
crystallization crystallization
vaporization vaporization

What is the chemical name of Marble?

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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

If a number is increased by \$50\%$, it becomes \$75$. Find the original number.

1 Mark(s)

Your Answer:

50 50
55 55
60 60
65 65

The lens which diverges light from a single point is:

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Your Answer:

concave lens concave lens
convex lens convex lens
biconvex lens biconvex lens
all of above all of above

Maltose is made up of

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Your Answer:

A) two α-D-glucose A) two α-D-glucose
B) normal β-D-glucose B) normal β-D-glucose
C) α- and β-D-glucose C) α- and β-D-glucose
D) fructose D) fructose

The union of two non-collinear rays with some common end point is called:

1 Mark(s)

Your Answer:

vertex vertex
angle angle
degree degree
radius radius

An inductive coil has a resistance of 100Ω. When an AC signal of frequency 1000Hz is fed to the coil the applied voltage leads the current by 45Ω. What is the inductance of the coil ?

1 Mark(s)

Your Answer:

10mH 10mH
12mH 12mH
16mH 16mH
20mH 20mH

A body immersed in a fluid experiences an upward buoyant force equal to:

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Your Answer:

Weight of fluid displaced Weight of fluid displaced
Weight of body Weight of body
Volume of body Volume of body
Viscous force Viscous force

A gas was found to have a density of 0.0847g/L at 17°C and a pressure of 760 torr. The gas must be?

1 Mark(s)

Your Answer:

CH4 CH4
He He
N2 N2
None of These None of These

P and Q can complete a work in 15 days and 10 days respectively. They started the work together and then Q left after 2 days. P alone completed the remaining work. The work was finished in__________days.

1 Mark(s)

Your Answer:

12 12
15 15
22 22
20 20

Which one of following is not a property of pure quartz ?

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Your Answer:

Coloured solid Coloured solid
Brittle Brittle
Hard Hard
All of above All of above

The current which does not change its direction of flow is called:

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Your Answer:

negative current negative current
direct current direct current
alternative current alternative current
fixed current fixed current

Solids expand on heating because:

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Your Answer:

Atoms get bigger Atoms get bigger
Electrons expand Electrons expand
Average separation between atoms increases
Mass increases Mass increases

If $\log_{10} 2 = 0.3010$, find the number of zeros after decimal in $(\frac{1}{2})^{10}$

1 Mark(s)

Your Answer:

2 2
3 3
4 4
5 5

The absolute value of integers |-10| and |-12| are:

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Your Answer:

10, 20, -10, -20 10, 20, -10, -20
0, -10 0, -10
10, 12 10, 12
0, 12 0, 12

The value of ‘x’ in √(x - 1) = 4 should be:

1 Mark(s)

Your Answer:

23 23
17 17
19 19
20 20

Which of the following set of substances contain acids?

1 Mark(s)

Your Answer:

A) Grapes, lime water A) Grapes, lime water
B) Vinegar, soap B) Vinegar, soap
C) Curd, milk of magnesia C) Curd, milk of magnesia
D) Curd, vinegar D) Curd, vinegar

The conversion of maltose into glucose is possible by the enzyme

1 Mark(s)

Your Answer:

A) zymase A) zymase
B) lactase B) lactase
C) maltase C) maltase
D) diastase D) diastase

Electric flux has the unit:

1 Mark(s)

Your Answer:

$V m$ $V m$
$V/m$ $V/m$
$N/C$ $N/C$
$N m$ $N m$

Which of the following can cause eye irritation in the troposphere?

1 Mark(s)

Your Answer:

chlorofluorocarbons (CFCs) chlorofluorocarbons (CFCs)
methane methane
ozone ozone
lead compounds lead compounds

If the axis of rotation passes through the body and the body moves around itself then the motion is called:

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Your Answer:

Spin motion Spin motion
Orbital motion Orbital motion
Rectilinear motion Rectilinear motion
Translatory motion Translatory motion

The resistance of the wire is directly proportional to the:

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Your Answer:

cross sectional area of the wire cross sectional area of the wire
length of the wire length of the wire
wire material's nature wire material's nature
all of above all of above

In a light bulb of 60 W, the current in a bulb fluctuates 50 times in each second between:

1 Mark(s)

Your Answer:

−0.51 A to 0.51 A −0.51 A to 0.51 A
−0.61 A to 0.61 A −0.61 A to 0.61 A
−0.71 A to 0.71 A −0.71 A to 0.71 A
−0.81 A to 0.81 A −0.81 A to 0.81 A

Speed × time is equal to:

1 Mark(s)

Your Answer:

displacement displacement
distance distance
velocity velocity
position position

Evaluating Your Answers

JEE Main Mock Test 9 : Question 1 of 63