JEE Main Mock Test 3 - Online MCQ Exam

A component of plant or animal tissue insoluble in water is called:

1 Mark(s)

Your Answer:

protein protein
carbohydrate carbohydrate
vitamin vitamin
lipids lipids

If $\alpha$ and $\beta$ are roots of $2x^2 - 5x + 3 = 0$, find the equation whose roots are $2\alpha + 3$ and $2\beta + 3$

1 Mark(s)

Your Answer:

$x^2-10x+24=0$ $x^2-10x+24=0$
$x^2-11x+30=0$ $x^2-11x+30=0$
$x^2-12x+35=0$ $x^2-12x+35=0$
$x^2-13x+40=0$ $x^2-13x+40=0$

The number of protons inside nucleus represents:

1 Mark(s)

Your Answer:

atomic mass atomic mass
atomic number atomic number
atomic count atomic count
radioactivity level radioactivity level

On solving the equation 3 1⁄5b + 5 = 50, the value of 'b' must be:

1 Mark(s)

Your Answer:

8 1⁄12 8 1⁄12
14 1⁄16 14 1⁄16
14 1⁄17 14 1⁄17
12 1⁄19 12 1⁄19

Which of the following is used as water disinfectant to avoid the formation of toxic compounds_________________?

1 Mark(s)

Your Answer:

Cl2 Cl2
O3 O3
ClO2 ClO2
both B & C both B & C

Where do the II and IV quadrants meet?

1 Mark(s)

Your Answer:

A) at O A) at O
B) in y-axis B) in y-axis
C) in x-axis C) in x-axis
D) do not intersect D) do not intersect

A question paper consists of five problems, each problem having three internal choices. In how many ways can a candidate attempt one or more problems?

1 Mark(s)

Your Answer:

63 63
511 511
1023 1023
15 15

The areas of two similar triangles are 12 cm2 and 48SQ. cm .If the height of the smaller one is 2.1cm than the corresponding height of the bigger one is_________?

1 Mark(s)

Your Answer:

0.525cm 0.525cm
4.2cm 4.2cm
80% 80%
60% 60%

1 atmospheric pressure is equal to:

1 Mark(s)

Your Answer:

100.345 Pa 100.345 Pa
760 kPa 760 kPa
101.325 kPa 101.325 kPa
1.01325 mmHg 1.01325 mmHg

The following pictograph shows three different kinds of trees planted in a park. Each symbol represents 10 trees. Look at the pictograph and answer the questions given below.

1 Mark(s)

Your Answer:

A) How many mango trees are there in all?
B) How many neem trees are there in all?
C) How many banyan trees are there in all?
D) How many total trees are there in all?

The Price of an article is cut by 10%. To restore it to the former value, the new price must be increased by_______?

1 Mark(s)

Your Answer:

10 % 10 %
9 1/11 % 9 1/11 %
11 1/9 % 11 1/9 %
11% 11%

The property of a substance which offers opposition to the flow of current through it is called:

1 Mark(s)

Your Answer:

energy energy
capacity capacity
resistance resistance
voltage voltage

If the time period of a simple pendulum is 2 s then it's length is:

1 Mark(s)

Your Answer:

1.02m 1.02m
1.2m 1.2m
1.4m 1.4m
1.5m 1.5m

If a rectangular cuboid is 9cm long and 8cm wide with the volume of 450cm³ then the height of cuboid in 'cm' is:

1 Mark(s)

Your Answer:

12.25 12.25
6.25 6.25
8.25 8.25
9.25 9.25

If n(U)=60, n(A)= 35, n(B)=24, and n(AUB)’=10 then n(A∩B) is ____________?

1 Mark(s)

Your Answer:

10 10
8 8
9 9
None of These None of These

The Total cost of flooring a room at Rs.8.50 per square meter is Rs.510. If the length of the room is 8km it’s breadth is__________?

1 Mark(s)

Your Answer:

7.5m 7.5m
8.5m 8.5m
10.5m 10.5m
12.5m 12.5m

Number of significant figures in 0.00250:

1 Mark(s)

Your Answer:

2 2
3 3
4 4
5 5

A bus starts moving with acceleration $2 m/s^2$. A cyclist 96m behind starts simultaneously at $20 m/s$. After what time will he overtake the bus?

1 Mark(s)

Your Answer:

$8 s$ $8 s$
$12 s$ $12 s$
$4 s$ $4 s$
$16 s$ $16 s$

Among the following substances the lowest vapour pressure is exerted by

1 Mark(s)

Your Answer:

A) water A) water
B) alcohol B) alcohol
C) ether C) ether
D) mercury D) mercury

The value of a machine depreciates at 20% per annum. If its present value is Rs. 1,50,000, at what price should it be sold after two years such that a profit of Rs. 24,000 is made?

1 Mark(s)

Your Answer:

Rs. 1,10,000 Rs. 1,10,000
Rs. 1,20,000 Rs. 1,20,000
Rs. 1,24,000 Rs. 1,24,000
Rs. 1,21,000 Rs. 1,21,000
None of these None of these

The hardness that cannot be removed by boiling is called:

1 Mark(s)

Your Answer:

temporary hardness temporary hardness
permanent hardness permanent hardness
semi temporary hardness semi temporary hardness
semi permanent hardness semi permanent hardness

The round off value of 38.23 to the nearest whole number is:

1 Mark(s)

Your Answer:

40 40
37 37
38 38
39 39

Which of the following is the most Viscous?

1 Mark(s)

Your Answer:

Glycerine Glycerine
Water Water
Honey Honey
Spirit Spirit

Like poles

1 Mark(s)

Your Answer:

A) Repel A) Repel
B) Merge B) Merge
C) Dissolve C) Dissolve
D) Attract D) Attract

Which of the following statements is incorrect about fluorine_______________?

1 Mark(s)

Your Answer:

fluorine is restricted to -1 oxidation state
fluorine follows octet rule and as well as extended octet rule
fluorine has lowest dissociation energy among the halogens
both B and C both B and C

For the reaction 2HI ____________> H2+ I2

1 Mark(s)

Your Answer:

Kp > kc Kp > kc
Kc > kp Kc > kp
Kp= kc Kp= kc
Kp ≤ kc Kp ≤ kc

Potential energy is defined only for:

1 Mark(s)

Your Answer:

Conservative forces Conservative forces
Non-conservative forces Non-conservative forces
Frictional forces Frictional forces
Viscous forces Viscous forces

A person bought an article and sold it at a loss of 10%. If he had bought it for 20% less and sold it for Rs.75 less, he could have gained 25%. What is the cost price?

1 Mark(s)

Your Answer:

Rs.250 Rs.250
Rs.225 Rs.225
Rs.275 Rs.275
Rs.200 Rs.200

Oxidation-reduction reaction involves:

1 Mark(s)

Your Answer:

transfer of neutrons transfer of neutrons
transfer of protons transfer of protons
transfer of electrons transfer of electrons
all of above all of above

An electric motor could be used as a: ___________?

1 Mark(s)

Your Answer:

Battery Battery
Capacitor Capacitor
Dynamo Dynamo
Transformer Transformer

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

The weakest (in strength) of the following intermolecular forces is_______________?

1 Mark(s)

Your Answer:

Hydrogen bonding Hydrogen bonding
Vander Waals force Vander Waals force
Forces among the polar molecules Forces among the polar molecules
Ionic bond Ionic bond

Strength of $\ce{H2O2}$ is expressed in:

1 Mark(s)

Your Answer:

Volume strength Volume strength
Molarity only Molarity only
Normality only Normality only
Percentage only Percentage only

Which is low spin complex?

1 Mark(s)

Your Answer:

$\ce{[CoF6]^3-}$ $\ce{[CoF6]^3-}$
$\ce{[Co(H2O)6]^3+}$ $\ce{[Co(H2O)6]^3+}$
$\ce{[Co(CN)6]^3-}$ $\ce{[Co(CN)6]^3-}$
$\ce{[CoCl6]^3-}$ $\ce{[CoCl6]^3-}$

What is $\frac{2}{3}$ of \$90$?

1 Mark(s)

Your Answer:

50 50
55 55
58 58
60 60

Evaluating Your Answers

JEE Main Mock Test 3 : Question 1 of 35