JEE Main Mock Test 18 - Online MCQ Exam

What is the term used for hydrocarbons containing carbon-carbon multiple bonds?

1 Mark(s)

Your Answer:

saturated hydrocarbons saturated hydrocarbons
unsaturated hydrocarbons unsaturated hydrocarbons
alkanes alkanes
none of above none of above

The number of lone pairs in XeOF4 is_________?

1 Mark(s)

Your Answer:

O O
1 1
2 2
3 3

Which one of the following is not soluble in water?

1 Mark(s)

Your Answer:

A) Turmeric powder A) Turmeric powder
B) Common salt B) Common salt
C) Alum C) Alum
D) All are soluble D) All are soluble

A moving body is covering a distance directly proportional to the square of time. The acceleration of the body is:

1 Mark(s)

Your Answer:

A) decreasing A) decreasing
B) increasing B) increasing
C) constant C) constant
D) zero D) zero

Isotopes differs in______________________?

1 Mark(s)

Your Answer:

arrangement of electrons in orbitals arrangement of electrons in orbitals
position in the periodic table position in the periodic table
properties depend upon mass properties depend upon mass
chemical properties chemical properties

Which of the following is used to make rectified spirit by fermentation process?

1 Mark(s)

Your Answer:

cellulose cellulose
starch starch
glucose glucose
fructose fructose

The radius of the cylinder is half its height and area of the inner part is 616 sq. cms. Approximately how many litres of milk can it contain ?

1 Mark(s)

Your Answer:

1.4 1.4
1.5 1.5
1.7 1.7
1.9 1.9

The direction of propagation of an electromagnetic waves is________________?

1 Mark(s)

Your Answer:

Perpendicular to electric field Perpendicular to electric field
Perpendicular to both electric and magnetic field
Perpendicular to magnetic field Perpendicular to magnetic field
Parallel to electric and magnetic field Parallel to electric and magnetic field

ppm means________________?

1 Mark(s)

Your Answer:

parts of solute in 1000 parts of solvent
parts of solvent in 1000 parts of solute
parts of solute in one million parts of solution
parts of solvent in one million parts of solute

Effective volume is usually taken for ____________ ?

1 Mark(s)

Your Answer:

2 moles of gas 2 moles of gas
1 mole of gas 1 mole of gas
5 moles of gas 5 moles of gas
3moles of gas 3moles of gas

The difference between \$90$ and \$55$ is:

1 Mark(s)

Your Answer:

30 30
33 33
35 35
38 38

Which of the following will not give aldol condensation?

1 Mark(s)

Your Answer:

A) Phenyl acetaldehyde A) Phenyl acetaldehyde
B) 2-Methylpentanal B) 2-Methylpentanal
C) Benzaldehyde C) Benzaldehyde
D) 1-Phenylpropanone D) 1-Phenylpropanone

The temporary memory of computer is:

1 Mark(s)

Your Answer:

ROM ROM
secondary memory secondary memory
primary memory primary memory
RAM RAM

The function f : R → R given by f(x) = x 3 – 1 is

1 Mark(s)

Your Answer:

A) a one-one function A) a one-one function
B) an onto function B) an onto function
C) a bijection C) a bijection
D) neither one-one nor onto D) neither one-one nor onto

The ascending order of the fractions $\frac{14}{17}, \frac{10}{12}, \frac{6}{7}$, and $\frac{18}{22}$ is

1 Mark(s)

Your Answer:

A) $\frac{6}{7}, \frac{14}{17}, \frac{10}{12}, \frac{18}{22}$
B) $\frac{18}{22}, \frac{14}{17}, \frac{10}{12}, \frac{6}{7}$
C) $\frac{14}{17}, \frac{10}{12}, \frac{14}{17}, \frac{18}{22}$
D) $\frac{6}{7}, \frac{10}{12}, \frac{14}{17}, \frac{18}{22}$ (\frac{18}{22}, \frac{14}{17}, \frac{10}{12}, \frac{6}{7}\)

Flame test for barium gives:

1 Mark(s)

Your Answer:

Yellow Yellow
Red Red
Lilac Lilac
Apple green Apple green

A solid consists of a circular cylinder with an exact fitting right circular cone placed on the top. The height of the cone is h. If the total volume of the solid is three times the volume of the cone then the height of the cylinder is________?

1 Mark(s)

Your Answer:

2h 2h
4h 4h
2h/3 2h/3
3h/2 3h/2

If the interest is payable annually than the principal on which the compound interest for 3 years at 10% P.a is Rs 33/- is given by:__________?

1 Mark(s)

Your Answer:

Rs 900 Rs 900
Rs 1000 Rs 1000
Rs 1050 Rs 1050
Rs 1100 Rs 1100

Ana runs a merchandiser store. She wants to buy 500 note books for her store. She will get 300 notebooks for $2500. The next 200 note books are for $4 per notebook. The total cost for note books will be:

1 Mark(s)

Your Answer:

$3,300 $3,300
$3,500 $3,500
$3,400 $3,400
$3,600 $3,600

Iodoform test is given by:

1 Mark(s)

Your Answer:

All aldehydes All aldehydes
$\ce{CH3CO-}$ compounds $\ce{CH3CO-}$ compounds
All ketones All ketones
All alcohols All alcohols

According to the reductionist approach in Physics, we try to:

1 Mark(s)

Your Answer:

Derive complex laws from observations Derive complex laws from observations
Explain macroscopic systems using microscopic constituents
Ignore microscopic details Ignore microscopic details
Focus only on the whole system Focus only on the whole system

The first man who came up with the idea of gravity was:

1 Mark(s)

Your Answer:

Henry Briggs Henry Briggs
John Napier John Napier
Jobst Burgi Jobst Burgi
Isaac Newton Isaac Newton

Assertion (A): When electric current flows through a conductor (like a wire), it produces a magnetic field around it. This phenomenon is known as the magnetic effect of electric current. Reason (R): The magnetic field around a current-carrying conductor can be shown by the deflection of a compass brought near the conductor. Codes:

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. (A) and (R) are true, and (R) is the correct explanation of (A).

Source of palmitic acid is:

1 Mark(s)

Your Answer:

butter butter
palm oil palm oil
beef fat beef fat
olive oil olive oil

The phenomenon of negative catalysis is also known as:

1 Mark(s)

Your Answer:

auto catalysis auto catalysis
Self catalysis Self catalysis
inhibition inhibition
Enzyme catalysis Enzyme catalysis

The velocity of a particle is $v = 3t + 4$. The displacement between $t=0$ and $t=2s$ is:

1 Mark(s)

Your Answer:

$10 m$ $10 m$
$12 m$ $12 m$
$14 m$ $14 m$
$16 m$ $16 m$

The negative terminal of the battery is connected to the voltmeter's:

1 Mark(s)

Your Answer:

partially positive terminals partially positive terminals
negative terminal negative terminal
positive terminal positive terminal
partially negative terminal partially negative terminal

Assertion (A) When you raise a number to the power of zero, the result is always zero. Reason (R) Any number raised to the power of zero equals one.

1 Mark(s)

Your Answer:

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

The set consisting of all the first elements of each ordered pair in the relation is called:

1 Mark(s)

Your Answer:

subset subset
domain of relation domain of relation
range of relation range of relation
complement of a set complement of a set

If the diagonals of a parallelogram bisect each other at right angles, then it will be a

1 Mark(s)

Your Answer:

A) rhombus A) rhombus
B) rectangle B) rectangle
C) kite C) kite
D) trapezium D) trapezium

M:N = 3:4, N:O = 5:7 and O:P = 7:9. Then M:P =________?

1 Mark(s)

Your Answer:

1/3 1/3
7/9 7/9
5/12 5/12
None of these None of these

A tap can fill a tank in 32 min. and another can empty it in 16 min. If the tank is already half full and both the tanks are opened together, the tank will be_________?

1 Mark(s)

Your Answer:

12 min 12 min
14 min 14 min
16 min 16 min
20 min 20 min

What will be the value of P(not E) if P(E) = 0.07?

1 Mark(s)

Your Answer:

90 90
007 007
93 93
72 72

Which of the following represents the correct electronic configuration of VII A group elements in the ground state ?

1 Mark(s)

Your Answer:

ns2p2 ns2p2
ns2p4 ns2p4
ns2p5 ns2p5
ns2p6 ns2p6

What is \$96\%$ of \$175$?

1 Mark(s)

Your Answer:

168 168
162 162
174 174
180 180

Which of the following numbers is an irrational number?

1 Mark(s)

Your Answer:

A) $\sqrt{23}$ A) $\sqrt{23}$
B) $\sqrt{225}$ B) $\sqrt{225}$
C) 0.3796 C) 0.3796
D) $7 . \overline{478}$ (\sqrt{23}\) D) $7 . \overline{478}$ (\sqrt{23}\)

The location of a place or a point with respect to some reference point(origin) is known as:

1 Mark(s)

Your Answer:

velocity velocity
rest rest
displacement displacement
position position

The value of 32 – (64 + 16) + 3 × 6 is

1 Mark(s)

Your Answer:

A) 31 A) 31
B) -32 B) -32
C) -30 C) -30
D) 30 D) 30

A protractor is used to draw and measure

1 Mark(s)

Your Answer:

A) angles A) angles
B) line segments B) line segments
C) triangle C) triangle
D) none of these D) none of these

A surd which has unity only as rational fraction and the other factors being irrational is said to be:

1 Mark(s)

Your Answer:

mixed surd mixed surd
pure surd pure surd
similar surd similar surd
unlike surd unlike surd

Which of the following aldehydes shows rapid reaction with sodium nitroprusside ?

1 Mark(s)

Your Answer:

formaldehyde formaldehyde
accetaldehyde accetaldehyde
benzaldehyde benzaldehyde
acetone acetone

Which one of the followings possesses melting point below 0°C?

1 Mark(s)

Your Answer:

Nitrogen Nitrogen
Phosphorus Phosphorus
Carbon Carbon
Bismuth Bismuth

A mixture of 70 litres of milk and water contains 10% water. How many litres of water should be added to the mixture so that the mixture contains 12 1/2% water?

1 Mark(s)

Your Answer:

2 2
8 8
4 4
5 5
None of these None of these

In a regular week, there are 5 working days and for each day, the working hours are 8. A man gets Rs. 2.40 per hour for regular work and Rs. 3.20 per hours for overtime. If he earns Rs. 432 in 4 weeks, then how many hours does he work for______?

1 Mark(s)

Your Answer:

160 160
175 175
180 180
195 195

Evaluating Your Answers

JEE Main Mock Test 18 : Question 1 of 44