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JEE Exam  >  JEE Tests  >  AP EAMCET Mock Test - 8 - JEE MCQ

AP EAMCET Mock Test - 8 - JEE MCQ


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30 Questions MCQ Test - AP EAMCET Mock Test - 8

AP EAMCET Mock Test - 8 for JEE 2024 is part of JEE preparation. The AP EAMCET Mock Test - 8 questions and answers have been prepared according to the JEE exam syllabus.The AP EAMCET Mock Test - 8 MCQs are made for JEE 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for AP EAMCET Mock Test - 8 below.
Solutions of AP EAMCET Mock Test - 8 questions in English are available as part of our course for JEE & AP EAMCET Mock Test - 8 solutions in Hindi for JEE course. Download more important topics, notes, lectures and mock test series for JEE Exam by signing up for free. Attempt AP EAMCET Mock Test - 8 | 160 questions in 180 minutes | Mock test for JEE preparation | Free important questions MCQ to study for JEE Exam | Download free PDF with solutions
AP EAMCET Mock Test - 8 - Question 1
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Find the kinetic energy of the photoelectrons emitted when light of wavelength 4000 Å is incident on a metal of work function 2 eV (find approximately)

AP EAMCET Mock Test - 8 - Question 2
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A sheet of aluminium foil of negligible thickness is introduced between the plates of a capacitor. The capacitance of the capacitor

Detailed Solution for AP EAMCET Mock Test - 8 - Question 2

The thickness of the foil is negligible

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AP EAMCET Mock Test - 8 - Question 3
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A choke coil has

AP EAMCET Mock Test - 8 - Question 4
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Which of the following has the minimum frequency?
AP EAMCET Mock Test - 8 - Question 5
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A transformer is having 2100 turns in primary and 4200 turns in secondary. An a.c. source of 120 V, 10 A is connected to its primary. The secondary voltage and current are :
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AP EAMCET Mock Test - 8 - Question 6
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The element which does not exhibit radioactivity is
AP EAMCET Mock Test - 8 - Question 7
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A charge q is placed at the corner of a cube of side l. The electric flux passing through the cube is
Detailed Solution for AP EAMCET Mock Test - 8 - Question 7

Eight cubes, each side l, are required to form a Gaussian surface
So that the charge q at the corner of a small cube appears at the centre of the bigger cube
According to Gauss's law, the electric flux through the bigger cubes = q/∈0
Hence the electric flux through the given small cube =q/8∈0

AP EAMCET Mock Test - 8 - Question 8
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As per Hardy-Schulze formulation, the flocculation values of the following for ferric hydroxide sol are in the order:
Detailed Solution for AP EAMCET Mock Test - 8 - Question 8

Fe(OH)3 is a positive sol. Its coagulation will be caused by the anion of the electrolyte.
The flocculation value is inversely proportional to the coagulation power or valency of the anion.
The correct order of flocculation values is:
K3 [Fe(CN)6] < K2CrO4 < KBr = KNO3 = AlCl3

AP EAMCET Mock Test - 8 - Question 9
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Which of the following will have highest pH?
Detailed Solution for AP EAMCET Mock Test - 8 - Question 9

In  case of (i), (ii), (iii) pH < 7 due to cationic  hydrolysis. In case of (NH4)3 PO4 both cation and anion undergo hydrolysis pH > 7.

AP EAMCET Mock Test - 8 - Question 10
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In the given reaction

'A' can be:
Detailed Solution for AP EAMCET Mock Test - 8 - Question 10


Hence, 'A' is bromo benzene.

AP EAMCET Mock Test - 8 - Question 11
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Coordination number of Zn in ZnS is
Detailed Solution for AP EAMCET Mock Test - 8 - Question 11

In ZnS, S− ions adopt fcc f c c lattice in which Zn2+ ions are present at alternate tetrahedral sites. Hence, coordination number of S2− is equal to coordination number of Zn2+ i.e., 4.

AP EAMCET Mock Test - 8 - Question 12
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On adding a few drops of dilute HCl to a freshly precipitated ferric hydroxide, a red-coloured colloidal solution is obtained. This phenomenon is called
Detailed Solution for AP EAMCET Mock Test - 8 - Question 12

Peptisation may be defined as the process of converting a precipitate into colloidal solution by shaking it with dispersion medium, in the presence of a small amount of electrolyte.

AP EAMCET Mock Test - 8 - Question 13
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The combining ratios of hydrogen and oxygen in water and hydrogen peroxide are 1: 8 and 1 : 16. Which law is illustrated in this example?
Detailed Solution for AP EAMCET Mock Test - 8 - Question 13
The combining ratios of hydrogen and oxygen . In water and hydrogen peroxide are 1 : 8 and 1 : 16. It is an example of a law of multiple proportions. According to this law, if two elements combine together to form several compounds then the weight of one of those elements, which combines with a fixed weight of the other, are in the ratio of simple whole numbers.
AP EAMCET Mock Test - 8 - Question 14
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Consider the following reaction.

'A' and 'B' are
Detailed Solution for AP EAMCET Mock Test - 8 - Question 14

Since, Toulene is ortho/para-directing. therefore, product formed is:

Since, -CH3 group is ortho, para directing the minor product will be

Hence, the option (1) is correct.

AP EAMCET Mock Test - 8 - Question 15
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The area bounded by two curves y2=4ax and x2=4ay is
AP EAMCET Mock Test - 8 - Question 16
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The S.D. of 5 scores 1,2,3,4,5 is
AP EAMCET Mock Test - 8 - Question 17
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If 5cos2θ+2cos2(θ/2)+1=0, -π<θ<π, then θ=
AP EAMCET Mock Test - 8 - Question 18
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The solution of (x + y + 1)  dy/dx = 1 is
Detailed Solution for AP EAMCET Mock Test - 8 - Question 18


⇒ z - log(z + 1) = x + c ⇒ x + y + 1 = log(x + y + 2) + x + c ⇒ y = log(x + y + 2) + log c
⇒ ey = (x + y + z)c ⇒ x + y + 2 = cey

AP EAMCET Mock Test - 8 - Question 19
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The coefficient of correlation r satisfies
AP EAMCET Mock Test - 8 - Question 20
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The solution of the equation cosx cosy (dy/dx)=-sinx siny is
AP EAMCET Mock Test - 8 - Question 21
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The differential equation of family of lines which passes (1,-1) is
AP EAMCET Mock Test - 8 - Question 22
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Mode is approximately given by
AP EAMCET Mock Test - 8 - Question 23
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If n is not a multiple of 3 then ωn + ω2n =
AP EAMCET Mock Test - 8 - Question 24
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AP EAMCET Mock Test - 8 - Question 25
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AP EAMCET Mock Test - 8 - Question 26
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Which equation has the solution, y = 4sin3x?
AP EAMCET Mock Test - 8 - Question 27
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∫logx dx =
Detailed Solution for AP EAMCET Mock Test - 8 - Question 27

 

= x log x − ∫ d x + c
= x log x − x + c

AP EAMCET Mock Test - 8 - Question 28
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The area in square units of the region bounded by the curves x2 = 4y, the line x = 2 and the x-axis is
Detailed Solution for AP EAMCET Mock Test - 8 - Question 28

The required area 

AP EAMCET Mock Test - 8 - Question 29
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In Δ A B C , If a2 + b2  + c2  = 8 R2 , then the triangle is
AP EAMCET Mock Test - 8 - Question 30
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In a Δ A B C , 2s = perimeter and R = circumradius. Then s/R is equal to
Detailed Solution for AP EAMCET Mock Test - 8 - Question 30

 = sin A + sin B + sin C .

 

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