JEE Main Test 112

Result

JEE Main Test 112

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
4 / -1

A Carnot engine operates with source at 127°C and sink at 27°C. If the source supplies 40 kJ of heat energy, the work done by the engine is

A
30 kJ

B
10 kJ

C
4 kJ

D
1 kJ

Solution
Question 2
4 / -1

The number of terms in the expansion of (a + b + c)¹⁰ is

A
11

B
21

C
55

D
66

Solution
Question 3
4 / -1

Dipole moment is shown by

A
cis-1, 2-dichloro ethene

B
trans-1, 2-dichloro ethene

C
trans-1 2-dichloro-2 pentene

D
Both (1) and (3)

Solution

C is – 1, 2 – dichloro and trans 1, 2- dichloro – 2 – pentene have dipole moment where as in trans – 1, 2 – dichloro ethene bond moments cancel out hence it has

μ = OD. The dipole moment is the vector sum of all the bond.
Question 4
4 / -1

The moment of inertia of a solid sphere of mass M and radius R about the tangent on its surface is

A
7 / 5 MR²

B
4 / 5 MR²

C
2 / 5 MR²

D
1 / 2 MR²

Solution
Question 5
4 / -1

A
+152 kJ mol ^-1

B
-610 kJ mol ^-1

C
-850 kJ mol ^-1

D
+120 kJ mol ^-1

Solution
Question 6
4 / -1

A wheel of moment of inertia 2.5 kg–m² has an initial angular velocity of 40 rad s ^-1. A constant torque of 10 N-m acts on the wheel. The time during which the wheel is accelerated to 60 rad s ^-1 is

A
4 s

B
6 s

C
5 s

D
2.5 s

Solution
Question 7
4 / -1

Using Molecular Orbital Theory predict which of the following species has the shortest bond length?

A

B

C

D

Solution

Since an increase in bond order leads to stronger bonds, there is an expectation that higher bond order means shorter bond.
Question 8
4 / -1

A
0

B
-4

C
4 but not 1

D
1 or 4

Solution
Question 9
4 / -1

Directions For Questions

I. H—C—H angle in CH₄

II. Cl—B—CI angle in BCl₃

III. F—I—F angle in IF₇ in a plane

IV. I—I—I angle in I^-₃

...view full instructions

Increasing order of above bond angles is

A
I < II < III < IV

B
II < I < III < IV

C
III < I < II < IV

D
IV < II < I < III

Solution
Question 10
4 / -1

A
2

B
3

C
0

D
1

Solution