JEE Main Mock Test 13 - Online MCQ Exam

Organic compounds are only soluble in:

1 Mark(s)

Your Answer:

non-polar solvents non-polar solvents
polar solvents polar solvents
metallic solvents metallic solvents
non-metallic solvents non-metallic solvents

Which of the following animals uses echolocation to hunt prey?

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Your Answer:

A) Elephant A) Elephant
B) Bat B) Bat
C) Snake C) Snake
D) Eagle D) Eagle

A surn of money is to be distributed among A, B, C, D in the proportion of 5 : 2 : 4 : 3. If C gets Rs. 1000 more than D, what is B’s share ?

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Your Answer:

Rs. 500 Rs. 500
Rs. 1500 Rs. 1500
Rs. 2000 Rs. 2000
None of these None of these

Which statement is wrong ?

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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

Gravitational acceleration for the bodies falling freely is:

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Your Answer:

positive positive
negative negative
zero zero
always equal to one a always equal to one a

What is the pH at which Bromothymol blue changes color?

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Your Answer:

5.5 5.5
7 7
9 9
10 10

Considering dimethyl, how many carbon atoms is the oxygen atom bonded to?

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Your Answer:

one one
two two
three three
four four

A U-tube with limbs of diameters $5 mm$ and $2 mm$ contains water. The difference in water levels (Surface tension $T = 7 \times 10^{-2} N/m$, angle $\theta=0$) is:

1 Mark(s)

Your Answer:

4.2 mm 4.2 mm
8.4 mm 8.4 mm
2.1 mm 2.1 mm
1.4 mm 1.4 mm

There is 60% increase in an amount in 6 years at S.I. What will be the C.I. of Rs. 12,000 after 3 years at the same rate?

1 Mark(s)

Your Answer:

Rs. 2160 Rs. 2160
Rs. 3120 Rs. 3120
Rs. 3972 Rs. 3972
Rs. 6240 Rs. 6240

2 mL each of concentrated HCl, HNO 3 and a mixture of concentrated HCl and concentrated HNO 3 in the ratio of 3 : 1 were taken in test tubes labelled as A, B and C. A small piece of metal was put in each test tube. No change occurred in test tubes A and B but the metal got dissolved in test tube C respectively. The metal could be

1 Mark(s)

Your Answer:

A) Al A) Al
B) Au B) Au
C) Cu C) Cu
D) Pt D) Pt

The force holding nucleons together is:

1 Mark(s)

Your Answer:

Strong Nuclear Force Strong Nuclear Force
Electrostatic Electrostatic
Gravitational Gravitational
Weak Weak

Lead battery is secondary battery the paste used in it is______________?

1 Mark(s)

Your Answer:

Magnese dioxide Magnese dioxide
Zinc chloride Zinc chloride
Ammonium chloride Ammonium chloride
AOT AOT

A dealer purchases 15 articles for Rs. 25 and sells 12 articles for Rs. 30. Find the profit percentage?

1 Mark(s)

Your Answer:

25% 25%
50% 50%
20% 20%
5% 5%
None of these None of these

The relaxation time of electrons in a metal ______ with increase in temperature.

1 Mark(s)

Your Answer:

Increases Increases
Decreases Decreases
Remains same Remains same
Becomes infinite Becomes infinite

What is the color of nitric oxide?

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Your Answer:

colorless colorless
pink pink
brown brown
reddish brown reddish brown

The temperature at the center of the Sun is nearly:

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Your Answer:

20 million Kelvin 20 million Kelvin
10 million Kelvin 10 million Kelvin
30 million Kelvin 30 million Kelvin
25 million Kelvin 25 million Kelvin

Some people can not see distant objects clearly without spectacles. This defect is called:

1 Mark(s)

Your Answer:

accommodation accommodation
stress stress
farsightedness farsightedness
nearsightedness nearsightedness

Which conservation law is a consequence of the isotropy of space?

1 Mark(s)

Your Answer:

Conservation of Energy Conservation of Energy
Conservation of Angular Momentum Conservation of Angular Momentum
Conservation of Linear Momentum Conservation of Linear Momentum
Conservation of Charge Conservation of Charge

When chlorine is passed through hot solution of caustic soda the reaction is said as___________________?

1 Mark(s)

Your Answer:

Displacement Displacement
Reduction Reduction
Disproportionation reaction Disproportionation reaction
Double displacement reaction Double displacement reaction

A body is moving up an inclined plane. The work done by the normal reaction is:

1 Mark(s)

Your Answer:

Positive Positive
Negative Negative
$mgh$ $mgh$
Zero Zero

Assertion (A) The square root of a perfect square is always a whole number. Reason (R) A perfect square is a number that can be expressed as the product of an integer by itself. (e.g. 9 = 3 × 3 or 16 = 4 × 4)

1 Mark(s)

Your Answer:

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

Propanone can be prepared from ethyne by

1 Mark(s)

Your Answer:

A) passing a mixture of ethyne and steam over a catalyst, magnesium at 420°C
B) passing a mixture of ethyne and ethanol over a catalyst zinc chromite
C) boiling ethyne with water in the presence of HgSO 4 and H 2 SO 4
D) treating ethyne with iodine and NaOH D) treating ethyne with iodine and NaOH

A man buys two articles for Rs.1980 each and he gains 10% on the first and loses 10% on the next. Find his total gain or loss percent?

1 Mark(s)

Your Answer:

1% gain 1% gain
1% loss 1% loss
10% loss 10% loss
no gain or no loss no gain or no loss

On solving equation 5⁄8d = 45, the value of 'd' must be:

1 Mark(s)

Your Answer:

84 84
62 62
72 72
58 58

The maximum value of U in the following cryptarithm which is possible is:

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Your Answer:

A) 1 A) 1
B) 2 B) 2
C) 3 C) 3
D) 9 D) 9

If an ophthalmologist places a 3.00 diopter lens next to 0.75 diopter lens, the power of lens should be:

1 Mark(s)

Your Answer:

3 diopters 3 diopters
0.75 diopters 0.75 diopters
2.25 diopters 2.25 diopters
3.75 diopters 3.75 diopters

Find the HCF of \$24$ and \$36$

1 Mark(s)

Your Answer:

6 6
8 8
12 12
18 18

Arrange the following elements in the order of their increasing non-metallic character. Li, O, C, Be, F

1 Mark(s)

Your Answer:

A) F < O < C < Be < Li A) F < O < C < Be < Li
B) Li < Be < C < O < F B) Li < Be < C < O < F
C) F < O < C < Be < Li C) F < O < C < Be < Li
D) F < O < Be < C < Li D) F < O < Be < C < Li

Terfenadine is commonly used as

1 Mark(s)

Your Answer:

A) antihistamine A) antihistamine
B) antibiotic B) antibiotic
C) antimicrobial C) antimicrobial
D) antifertility drug D) antifertility drug

The magnetic effect of an electric current generates a magnetic field around the current-carrying coil of a metallic wire

1 Mark(s)

Your Answer:

A) When the electric current stops flowing through the coil
B) When the coil becomes hot due to the heating effect of the electric current
C) When the electric current is flowing through the coil
D) When the coil is brought near another magnet

The repetition of sound caused by reflection from a distant obstacle is called:

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Your Answer:

Echo Echo
Reverberation Reverberation
Refraction Refraction
Diffraction Diffraction

24 – [2.4 – {0.24 * 2 – (0.024 – ?)}] = 22.0584

1 Mark(s)

Your Answer:

0.0024 0.0024
0.024 0.024
0.24 0.24
0.00024 0.00024

What is the chemical name of sugar?

1 Mark(s)

Your Answer:

Deuterium Oxide (D 2 O) Deuterium Oxide (D 2 O)
Sucrose (C 12 H 22 O 11 ) Sucrose (C 12 H 22 O 11 )
Methane (CH4) Methane (CH4)
Nitrous Oxide (N2O) Answer Nitrous Oxide (N2O) Answer

Why do ionic compounds form crystal lattices instead of discrete molecules?

1 Mark(s)

Your Answer:

A) Weak forces between ions A) Weak forces between ions
B) Strong electrostatic forces in all directions
C) Presence of covalent bonds C) Presence of covalent bonds
D) Lack of ions D) Lack of ions

Evaluating Your Answers

JEE Main Mock Test 13 : Question 1 of 34