JEE Main Mock Test 1 - Online MCQ Exam

The radiations that can ionize the matter are:

1 Mark(s)

Your Answer:

alpha radiations alpha radiations
gamma radiations gamma radiations
beta radiations beta radiations
all of above all of above

Iodine is solid due to_________________?

1 Mark(s)

Your Answer:

Strong covalent bond Strong covalent bond
Large value of dipole moment Large value of dipole moment
High polarizability High polarizability
Strong hydrogen bonding Strong hydrogen bonding

Which of the following processes involves the addition of hydrogen molecule across carbon-carbon multiple-bond?

1 Mark(s)

Your Answer:

dehydration dehydration
Dehydrohalogenation Dehydrohalogenation
dehalogenation dehalogenation
hydrogenation hydrogenation

Find the focal length of the mirror that forms an image 6.2 cm behind the mirror of an object placed at 26 cm in front of the mirror?

1 Mark(s)

Your Answer:

−6.58 cm −6.58 cm
−8.41 cm −8.41 cm
−7.8 cm −7.8 cm
−9.6 cm −9.6 cm

In ordered pair (y, z), ‘y’ is called:

1 Mark(s)

Your Answer:

constant constant
first co-ordinate first co-ordinate
second co-ordinate second co-ordinate
co-efficient co-efficient

A rectangular carpet has an area of 60 sq.m its diagonal and longer side together equal 5 times the shorter side. The length of the carpet is:_________?

1 Mark(s)

Your Answer:

5m 5m
12m 12m
13m 13m
14.5m 14.5m

The general formula for alcohols is:

1 Mark(s)

Your Answer:

R-OH R-OH
R-O-R R-O-R
R-COOH R-COOH
R-NH2 R-NH2

The area of a circle is increased by 22Sq.cm when it’s radius is increased by 1cm. The original radius of the circle is_________?

1 Mark(s)

Your Answer:

6cm 6cm
3.2 cm 3.2 cm
3 cm 3 cm
3.5 cm 3.5 cm

The software that manages your computer and the devices connected to it is termed as:

1 Mark(s)

Your Answer:

read only memory read only memory
microprocessor microprocessor
operating system operating system
managing system managing system

1 amu (u) is equivalent to energy:

1 Mark(s)

Your Answer:

1 eV 1 eV
931 eV 931 eV
931.5 MeV 931.5 MeV
1 J 1 J

What is $\frac{1}{4} + \frac{1}{2}$?

1 Mark(s)

Your Answer:

$\frac{1}{2}$ $\frac{1}{2}$
$\frac{3}{4}$ $\frac{3}{4}$
$\frac{2}{3}$ $\frac{2}{3}$
$\frac{5}{6}$ $\frac{5}{6}$

Force per unit length between two parallel currents $I_1, I_2$ separated by $d$:

1 Mark(s)

Your Answer:

$\mu_0 I_1 I_2 / 2\pi d$ $\mu_0 I_1 I_2 / 2\pi d$
$\mu_0 I_1 I_2 / 4\pi d$ $\mu_0 I_1 I_2 / 4\pi d$
$\mu_0 I_1 I_2 / d^2$ $\mu_0 I_1 I_2 / d^2$
Zero Zero

Acetone reacts with $\ce{HCN}$ to form:

1 Mark(s)

Your Answer:

Oxime Oxime
Imine Imine
Cyanohydrin Cyanohydrin
Hydrazone Hydrazone

By evaluating 28 x 3.54⁄6.8549, the round off value correct up to two decimal places is:

1 Mark(s)

Your Answer:

10.46 10.46
15.46 15.46
14.46 14.46
0.46 0.46

Electric potential and Electromotive force (EMF) are:

1 Mark(s)

Your Answer:

different terms different terms
have different units have different units
same terms same terms
undefined terms undefined terms

The following alcohol does not undergo oxidation is _____________?

1 Mark(s)

Your Answer:

1° alcohol 1° alcohol
2° alcohol 2° alcohol
3° alcohol 3° alcohol
0° alcohol 0° alcohol

The least number of four digits which is divisible by 4, 6, 8 and 10 is_________?

1 Mark(s)

Your Answer:

1080 1080
1085 1085
1075 1075
1095 1095

If $6x = 42$, find $x$

1 Mark(s)

Your Answer:

5 5
6 6
7 7
8 8

Which of the following gas diffuses more rapidly?

1 Mark(s)

Your Answer:

H2 H2
O2 O2
So3 So3
NH3 Answer NH3 Answer

Loudness of sound is determined by its:

1 Mark(s)

Your Answer:

Frequency Frequency
Amplitude Amplitude
Wavelength Wavelength
Speed Speed

If the amplitude of a damped oscillator decreases to half its value in 1 minute, what will be the amplitude after 3 minutes? (Initial $A_0$)

1 Mark(s)

Your Answer:

$A_0/2$ $A_0/2$
$A_0/4$ $A_0/4$
$A_0/6$ $A_0/6$
$A_0/8$ $A_0/8$

At the time of dissolution of firm book value of assets is recorded in which side of the Realisation Account ?

1 Mark(s)

Your Answer:

A) Debit Side A) Debit Side
B) Credit Side B) Credit Side
C) All of the above C) All of the above
D) Liabilities Side D) Liabilities Side

Pipe A can fill a tank in 5 hours, pipe B in 10 hours and pipe C in 30 hours. If all the pipes are open, in how many hours will the tank be filled?

1 Mark(s)

Your Answer:

2 2
2.5 2.5
3 3
3.5 3.5

The rotational K.E of the hoop is equal to the______________?

1 Mark(s)

Your Answer:

its translational K.E its translational K.E
half than its translational K.E half than its translational K.E
double than its translational K.E double than its translational K.E
four times than its translational K.E four times than its translational K.E

Which one is the irrational number?

1 Mark(s)

Your Answer:

2 ⁄ 3 2 ⁄ 3
√4 √4
3 ⁄ 5 3 ⁄ 5
3 ⁄ 7 3 ⁄ 7

Write in Hindu numerals

1 Mark(s)

Your Answer:

A) XCVII A) XCVII
B) DCCXL B) DCCXL
C) MMCIX C) MMCIX
D) DCIX D) DCIX

A tank is 7m long and 4m wide at what speed should water run through pipes 5cm broad and 4cm deep so that in 6 hours and 18 minutes, the water level in the tank rises by 4.5cm?

1 Mark(s)

Your Answer:

12km/hr 12km/hr
10km/hr 10km/hr
14km/hr 14km/hr
None of these None of these

The rate of reaction of organic compounds is slow due to:

1 Mark(s)

Your Answer:

ionic bonding ionic bonding
amphoteric nature amphoteric nature
covalent bonding covalent bonding
coordinate covalent bonding coordinate covalent bonding

The error in the measurement of the side of a cube is 2%. The error in its volume will be:

1 Mark(s)

Your Answer:

0.02 0.02
0.04 0.04
0.06 0.06
0.08 0.08

For a particle moving in a circle of radius $r$ with angular velocity $\omega$, the linear velocity $v$ is:

1 Mark(s)

Your Answer:

$v = r\omega$ $v = r\omega$
$v = r/\omega$ $v = r/\omega$
$v = \omega/r$ $v = \omega/r$
$v = r^2\omega$ $v = r^2\omega$

The branch of chemistry which deals with a substance containing carbon is called:

1 Mark(s)

Your Answer:

carbon chemistry carbon chemistry
inorganic chemistry inorganic chemistry
organic chemistry organic chemistry
environmental chemistry environmental chemistry

The 8.5% of 3000 is:

1 Mark(s)

Your Answer:

265 265
245 245
255 255
235 235

On contact with oxygen, Rubidium forms:

1 Mark(s)

Your Answer:

normal oxide normal oxide
per oxide per oxide
super oxide super oxide
trioxide trioxide

The L.C.M of two numbers is 495 and their H.C.F is 5. If the sum of the numbers is 10, then their difference is__________?

1 Mark(s)

Your Answer:

10 10
46 46
70 70
90 90

A convex lens acts as a diverging lens if the_________________?

1 Mark(s)

Your Answer:

object is beyond C object is beyond C
if the object is with in C if the object is with in C
if the object is within f if the object is within f
both B and C both B and C

Cannizaros reaction takes place through the transfer of ____________________ from complex anion?

1 Mark(s)

Your Answer:

hydrogen ion hydrogen ion
hydride ion hydride ion
oxide ion oxide ion
methoxide ion methoxide ion

The energy liberated when one atom of U-235 undergoes fission reaction is________________?

1 Mark(s)

Your Answer:

200MeV 200MeV
40MeV 40MeV
30MeV 30MeV
20MeV 20MeV

The present average age of a family of five members is 26 years. If the present age of the youngest member in the family is ten years, then what was the average age of the family at the time of the birth of the youngest member ? (Assume no death occurred in the family since the birth of the youngest).

1 Mark(s)

Your Answer:

18 years 18 years
14 years 14 years
20 years 20 years
16 years 16 years

The value of $\gamma$ for a triatomic gas (non-linear) is:

1 Mark(s)

Your Answer:

1.33 1.33
1.4 1.4
1.67 1.67
1.28 1.28

Which of the following is a palindromic number?

1 Mark(s)

Your Answer:

A) 848 A) 848
B) 123 B) 123
C) 401 C) 401
D) 236 D) 236

According to which one of following law the density of atom is uniform ?

1 Mark(s)

Your Answer:

J.J.Thomson model J.J.Thomson model
Rutherfords model Rutherfords model
Bohrs model Bohrs model
All of the above laws contradict the statement

Sum of the deviations of a variable from its mean is always:

1 Mark(s)

Your Answer:

0 0
1 1
2 2
5 5

Why did mass decrease in an open reaction system?

1 Mark(s)

Your Answer:

A) Mass destroyed A) Mass destroyed
B) Reaction stopped B) Reaction stopped
C) Gas escaped C) Gas escaped
D) Error in balance D) Error in balance

Which of the ollowing is an acid-base indicator?

1 Mark(s)

Your Answer:

A) Vinegar A) Vinegar
B) Lime water B) Lime water
C) Turmeric C) Turmeric
D) Baking soda (Q. No. 1 to 3): Each question below consists of an Assertion (A) and a Reason (R). Use the following key to choose the appropriate answer.

Gas molecules of different masses in the same container have the same average transnational kinetic energy which is directly proportional to their_____________?

1 Mark(s)

Your Answer:

volume volume
pressure pressure
absolute temperature absolute temperature
time time

The inability of eye to see the objects clearly is called:

1 Mark(s)

Your Answer:

clarity of image clarity of image
Defect of vision Defect of vision
blur image blur image
small image small image

The structure shown above is

1 Mark(s)

Your Answer:

A) mannose A) mannose
B) fructose B) fructose
C) glucose C) glucose
D) galactose D) galactose

Out of these gases which one is used in fire extinguishers

1 Mark(s)

Your Answer:

A) CO 2 A) CO 2
B) SO 2 B) SO 2
C) NO 2 C) NO 2
D) H 2 S D) H 2 S

Atif and Bilal, 110 km apart, start cycling towards each other. If Atif covers a distance of 6 km to Bilal’s 5 km, how far will Atif have travelled when they meet?

1 Mark(s)

Your Answer:

66 km 66 km
55 km 55 km
50 km 50 km
60 km 60 km

A tunnel is dug along a diameter of Earth. A mass dropped into it executes SHM. The time period is:

1 Mark(s)

Your Answer:

24 hours 24 hours
84.6 minutes 84.6 minutes
Infinite Infinite
42.3 minutes 42.3 minutes

Evaluating Your Answers

JEE Main Mock Test 1 : Question 1 of 50