JEE Main Mock Test 17 - Online MCQ Exam

What is $\sqrt{729}$?

1 Mark(s)

Your Answer:

25 25
27 27
29 29
31 31

Both virtual and real images can be formed by a:

1 Mark(s)

Your Answer:

plane mirror plane mirror
convex mirror convex mirror
concave mirror concave mirror
silver mirror silver mirror

The domain of R = {(0, 2), (2, 4), (3, 4), (4, 5)} is:

1 Mark(s)

Your Answer:

{0, 2, 4, 5} {0, 2, 4, 5}
{0, 2, 3, 4} {0, 2, 3, 4}
{2, 4, 5} {2, 4, 5}
{3, 4, 5} {3, 4, 5}

Alkanes containing a methyl group on main chain at 2nd carbon are called________________?

1 Mark(s)

Your Answer:

iso-alkane iso-alkane
normal-alkane normal-alkane
neo-alkane neo-alkane
branched-alkane branched-alkane

There is a 30% increase in the price of an article in the first year, a 20% decrease in the second year and a 10% increase in the next year. If the final price of the article is Rs. 2288, then what was the price of the article initially?

1 Mark(s)

Your Answer:

Rs. 1500 Rs. 1500
Rs. 1800 Rs. 1800
Rs. 2000 Rs. 2000
Rs. 2400 Rs. 2400
None of these None of these

A total of 3000 chocolates were distributed among 120 boys and girls such that each boy received 2 chocolates and each girl received 3 chocolates. Find the respective number of boys and girls?

1 Mark(s)

Your Answer:

70, 50 70, 50
60, 60 60, 60
50, 70 50, 70
40, 80 40, 80

________________ is study about energy of a chemical system ?

1 Mark(s)

Your Answer:

thermochemistry thermochemistry
thermodynamics thermodynamics
chemical kinetics chemical kinetics
stoichiometry stoichiometry

If 2 bodies are oppositely charged with 400µC and 200µC, the distance between them in the air is 0.5 m. The force between the bodies should be:

1 Mark(s)

Your Answer:

2880 N 2880 N
3000 N 3000 N
1850 N 1850 N
3250 N 3250 N

Which one of the following alcohols will be formed when ethyl magnesium bromide reacts with acetone ?

1 Mark(s)

Your Answer:

primary alcohol primary alcohol
secondary alcohol secondary alcohol
tertiary alcohol tertiary alcohol
dihydric alcohol dihydric alcohol

5 × (7 + 3) =

1 Mark(s)

Your Answer:

A) 5 × 7 × 3 A) 5 × 7 × 3
B) 5 × 7 + 3 B) 5 × 7 + 3
C) 5 × 7 + 5 × 3 C) 5 × 7 + 5 × 3
D) 7 + 5 × 3 D) 7 + 5 × 3

Nitrogen oxides in decreasing oxidation order:

1 Mark(s)

Your Answer:

$\ce{N2O5 > NO2 > NO > N2O}$ $\ce{N2O5 > NO2 > NO > N2O}$
$\ce{NO > NO2 > N2O > N2O5}$ $\ce{NO > NO2 > N2O > N2O5}$
All same All same
Random order Random order

(a – 3b) (2a + 6b) = _______

1 Mark(s)

Your Answer:

A) 2a 2 – 18b 2 A) 2a 2 – 18b 2
B) a 2 – 9b 2 B) a 2 – 9b 2
C) 2a 2 – 9b 2 C) 2a 2 – 9b 2
D) a 2 – 18b 2 D) a 2 – 18b 2

In a fort there is sufficient food for 600 men for a month. If 400 more men arrive the fort then how long the food is sufficient for now?

1 Mark(s)

Your Answer:

20 days 20 days
18 days 18 days
28 days 28 days
36 days 36 days

The SI unit of electric potential is:

1 Mark(s)

Your Answer:

volts volts
ohm ohm
coulomb coulomb
newton newton

The chemical symbol for sodium is:

1 Mark(s)

Your Answer:

A) Na A) Na
B) Na B) Na
C) So C) So
D) Sd D) Sd

Which of the following determines the identity of an element?

1 Mark(s)

Your Answer:

A) Mass number A) Mass number
B) Number of neutrons B) Number of neutrons
C) Valency C) Valency
D) Atomic number D) Atomic number

The focus of the convex mirror is:

1 Mark(s)

Your Answer:

negative negative
virtual virtual
real real
zero zero

Splitting of spectral lines when atoms are Subjected to strong electric field is called?

1 Mark(s)

Your Answer:

Photoelectric Effect Photoelectric Effect
Zeeman Effect Zeeman Effect
Stark Effect Stark Effect
Compton Effect Answer Compton Effect Answer

A polygon having 4 sides is called:

1 Mark(s)

Your Answer:

hexagon hexagon
nonagon nonagon
heptagon heptagon
quadrilateral quadrilateral

Which one of the following radiation possesses maximum penetrating power ?

1 Mark(s)

Your Answer:

X-rays X-rays
B-rays B-rays
γ-rays γ-rays
All have the equal penetrating powe All have the equal penetrating powe

A,B,C, can do a work in 8,14,16 days respectively. A does the work for the first 2 days. B continues from it and finishes 2/3rd of the remaining work. C finishes the remaining work. How many days would have taken to complete the work?

1 Mark(s)

Your Answer:

13 13
11 11
12 12
15 15

If $\sqrt{2x+5} = 7$, find $x$

1 Mark(s)

Your Answer:

20 20
21 21
24 24
22 22

If the half-life of the radioactive element is T1/2 then at the end of this time the number of atoms in the sample will become:

1 Mark(s)

Your Answer:

one quarter one quarter
double double
half half
triple triple

Which of the following is closest to the Earth's surface?

1 Mark(s)

Your Answer:

troposphere troposphere
stratosphere stratosphere
mesosphere mesosphere
thermosphere thermosphere

A thermometer should be:

1 Mark(s)

Your Answer:

visible visible
have high boiling point have high boiling point
small specific heat small specific heat
all of above all of above

Centrifugal forces are balanced in atom by__________________?

1 Mark(s)

Your Answer:

Attractive forces Attractive forces
Repulsive force Repulsive force
Electrons Electrons
Neutrons Neutrons

The number of atoms of hydrogen in 2 moles of NH3:

1 Mark(s)

Your Answer:

5 * 1023 5 * 1023
3.01 * 1023 3.01 * 1023
3.61 * 1024 3.61 * 1024
4 * 1023 4 * 1023

An element X forms an oxide with formula X 2 O 3. The formula of chloride of X is:

1 Mark(s)

Your Answer:

A) XO 3 A) XO 3
B) X 2 O B) X 2 O
C) X 2 O 3 C) X 2 O 3
D) XO D) XO

The electric power enters our house through:

1 Mark(s)

Your Answer:

ground wire ground wire
neutral wire neutral wire
live wire live wire
all of above all of above

The standard quantity for measuring is called:

1 Mark(s)

Your Answer:

base quantity base quantity
physical quantity physical quantity
derived quantity derived quantity
unit unit

Seats for Mathematics, Physics and Biology in a school are in the ratio 5 : 7 : 8. There is a proposal to increase these seats by 40%, 50% and 75% respectively. What will be the ratio of increased seats ?

1 Mark(s)

Your Answer:

2 : 3 : 4 2 : 3 : 4
6 : 7 : 8 6 : 7 : 8
6 : 8 : 9 6 : 8 : 9
None of these None of these

In Aldehydes and Ketones, carbon of carbonyl group is ____________?

1 Mark(s)

Your Answer:

sp3 hybridised sp3 hybridised
sp2 hybridised sp2 hybridised
sp hybridised sp hybridised
Unhybridised Unhybridised

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

1 Mark(s)

Your Answer:

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

What is Rose metal?

1 Mark(s)

Your Answer:

It is an alloy of Nickel, Tin, and Zinc It is an alloy of Nickel, Tin, and Zinc
It is an alloy of Bismuth, Copper, and Palladium
It is an alloy of Palladium, Tin, and Lead
It is an alloy of Bismuth, Tin, and Lead Answer

When substance moves from a solid to a liquid state all of the following changes occur except__________________?

1 Mark(s)

Your Answer:

Molecules become more disordered Molecules become more disordered
K.E of the molecules decreases K.E of the molecules decreases
Intermolecular forces become weaker Intermolecular forces become weaker
Molecule become further separated Molecule become further separated

Which metal is liquid at room temperature?

1 Mark(s)

Your Answer:

Gallium Gallium
Cesium Cesium
Francium Francium
Mercury Mercury

What is $\sqrt{1521}$?

1 Mark(s)

Your Answer:

39 39
37 37
41 41
43 43

Coating of solid waste with impervious material is known as:?

1 Mark(s)

Your Answer:

Capping Capping
Encapsulation Encapsulation
Landfill Landfill
Chemical fixation Answer Chemical fixation Answer

An aeroplane flies $400 km$ North and $300 km$ South and then flies $1200 km$ upwards. The net displacement is:

1 Mark(s)

Your Answer:

$1900 km$ $1900 km$
$1204 km$ $1204 km$
$1500 km$ $1500 km$
$1200 km$ $1200 km$

The surface area of a (10cm x 4cm x3cm) brick is__________?

1 Mark(s)

Your Answer:

84 Sq.cm 84 Sq.cm
124 Sq.cm 124 Sq.cm
164 Sq.cm 164 Sq.cm
180 Sq.cm 180 Sq.cm

The percentage of nitrogen in urea is________________?

1 Mark(s)

Your Answer:

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

Chapter 14 Biomolecules. Chemistry MCQs for Class 12 Chapter Wise with Answers PDF Download was Prepared Based on Latest Exam Pattern. Students can solve NCERT Class 12 Chemistry Biomolecules MCQs Pdf with Answers to know their preparation level. Biomolecules Class 12 Chemistry MCQs Pdf 1. RNA and DNA are chiral molecules, their chirality is due to

1 Mark(s)

Your Answer:

A) chiral bases A) chiral bases
B) chiral phosphate units B) chiral phosphate units
C) D-sugar component C) D-sugar component
D) L-sugar component Answer/Explanation D) L-sugar component Answer/Explanation

Which of the following can be used to absorb neutrons to control the chain reaction during nuclear fission?

1 Mark(s)

Your Answer:

Uranium Uranium
Boron Boron
Plutonium Plutonium
Heavy water Answer Heavy water Answer

The area of a rectangle is 96 cm 2 . If its length is 12 cm, what is its breadth?

1 Mark(s)

Your Answer:

A) 6 cm A) 6 cm
B) 8 cm B) 8 cm
C) 10 cm C) 10 cm
D) 12 cm D) 12 cm

In hydrogen spectrum which one of the following series lies in the ultraviolet region ?

1 Mark(s)

Your Answer:

Balmer series Balmer series
Pfund series Pfund series
Bracket series Bracket series
Lymann series Lymann series

Core of a transformer is laminated to reduce:

1 Mark(s)

Your Answer:

Hysteresis loss Hysteresis loss
Eddy current loss Eddy current loss
Copper loss Copper loss
Flux leakage Flux leakage

The point of a system where an applied force causes the system to move without rotation is termed as:

1 Mark(s)

Your Answer:

friction friction
center of gravity center of gravity
center of a mass center of a mass
intersection point intersection point

When a sound wave goes from air into water, the quantity that remains unchanged is its:

1 Mark(s)

Your Answer:

A) amplitude A) amplitude
B) frequency B) frequency
C) velocity C) velocity
D) wavelength D) wavelength

What is the chemical name of Bleaching Powder?

1 Mark(s)

Your Answer:

Sodium thiosulfate (Na₂S₂O₃·5H₂O)
Zinc Oxide (ZnO) Zinc Oxide (ZnO)
Calcium hypochlorite Ca(ClO)₂ Calcium hypochlorite Ca(ClO)₂
Ethyl alcohol (C 2 H 5 OH) Answer Ethyl alcohol (C 2 H 5 OH) Answer

Black foot disease is caused by the pollution of groundwater as a consequence of increased seepage of:__________?

1 Mark(s)

Your Answer:

Nitrates Nitrates
Fluorides Fluorides
Arsenic Arsenic
Mercury Mercury

The non-ideal behaviour results chiefly from________________?

1 Mark(s)

Your Answer:

Intermolecular attraction and infinite volume
Elastic collisions and finite volume Elastic collisions and finite volume
Intermolecular attractions and finite volume
Intermolecular attraction only Intermolecular attraction only

In a compound microscope, the focal length of the objective lens is:

1 Mark(s)

Your Answer:

short short
large large
zero zero
none of above none of above

A magnetic field___________________?

1 Mark(s)

Your Answer:

always exerts a force on a charged particle
never exerts a force on a charged particles
exerts a force if the charged particle is moving in the direction of the magnetic field lines
exerts a force if the charged particle is moving perpendicular to the magnetic field lines

The position of an Element in the Periodic table is determined by its Number of?

1 Mark(s)

Your Answer:

Electron Electron
Proton Proton
Positron Positron
Neutron Answer Neutron Answer

What is the term used for a salt which is formed by the partial neutralization of a polyhydroxy base?

1 Mark(s)

Your Answer:

basic salt basic salt
common salt common salt
acid salt acid salt
normal salt normal salt

Ketones can be prepared from:

1 Mark(s)

Your Answer:

1° alcohols 1° alcohols
2° alcohols 2° alcohols
Aldehydes Aldehydes
Esters Esters

Addition of CH3COOH and CH3COONa gives in water_______________?

1 Mark(s)

Your Answer:

Standard solution Standard solution
buffer solution buffer solution
acidic buffer solution acidic buffer solution
both B & C both B & C

Which of the following forces is charge-independent?

1 Mark(s)

Your Answer:

Electric Force Electric Force
Magnetic Force Magnetic Force
Gravitational Force Gravitational Force
Strong Nuclear Force Strong Nuclear Force

The potential energy of a harmonic oscillator is $U = E_0$. The kinetic energy at the mean position is:

1 Mark(s)

Your Answer:

$E_0$ $E_0$
$E_0/2$ $E_0/2$
Zero Zero
$2E_0$ $2E_0$

In a group of 80 children and 10 youngsters, each child got sweets that are 15% of the total number of children and each youngster got sweets that are 25% of the total number of children. How many sweets were there?

1 Mark(s)

Your Answer:

1160 1160
1100 1100
1080 1080
1210 1210
None of these None of these

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JEE Main Mock Test 17 : Question 1 of 60