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When 3 -hydropropanal is treated q with methylmagnesium iodide in equimolar amounts, the most probable product
will be:
\( A \)
B.
\( c \)
D. There will be no net reaction
| 1 |
Chemistry
|
The time, in which a force of \( 2 \mathrm{N} \)
produces a change as momentum of 0.4
kg \( m s^{-1} \) in the body is :
A. \( 0.2 s \)
B. 0.02s
c. \( 0.5 \mathrm{s} \)
D. 0.05s
| 3 |
Physics
|
Illustrate a condition in which :
Electric field is zero but potential is not
zero.
| 3 |
Physics
|
Find \( \boldsymbol{x} \)
\( \frac{5 x}{2}+\frac{3 x}{4} \geq \frac{39}{4} \)
| 2 |
Maths
|
The solution of \( (2 \cos x-1)(3+ \)
\( 2 \cos x)=0 \) in the interval \( 0 \leq \theta \leq 2 \pi \)
is
\( \mathbf{A} \cdot(\pi / 3) \)
В. \( (\pi / 3,5 \pi / 3) \)
c. \( [\pi / 3,5 \pi / 3] \)
D. none of these
| 2 |
Maths
|
Power of a lens can't be measured in
A. \( m \)
B. \( W \)
c. Horse power
D. None of these
| 3 |
Physics
|
A woman can give birth to how many
children in her lifetime?
| 0 |
Biology
|
How many statements are wrong about
asthma?
(i) The respiratory surface is decreased.
(ii) The only cause of it is cigarette
smoking.
(iii) Due to inflammation of bronchi and
bronchioles.
(iv) Alveolar walls are damaged altogether
(v) Difficulty in breathing causes wheezing.
A. one
B. Two
c. Three
D. Five
| 0 |
Biology
|
Which one of the following elements constitutes a major impurity in pig iron?
A. Silicon
B. Oxygen
c. sulphur
D. Graphite
| 1 |
Chemistry
|
The value of \( Z_{c} \) at \( T_{c}, P_{c} \) and \( V_{c} \) is \( \frac{3}{x} \)
Value of \( x \) is
| 1 |
Chemistry
|
The value of \( \sum_{r=1}^{n} r\left(^{n} C_{r}+^{r} P_{r}\right) \) is
A \( \cdot n \cdot 2^{n-1}-1 \)
B . \( n \cdot 2^{n-1}+(n+1) ! \)
C \( \cdot n \cdot 2^{n-1}+(n+1) !-1 \)
D. \( n^{2}+n+5 \)
| 2 |
Maths
|
In a series of \( 2 n \) observations, half of
them equal \( a \) and remaining half equal
\( -a . \) If the \( S . D . \) of the observations is 2
then \( |a| \) equals
A \( \cdot \frac{1}{n} \)
B. \( \sqrt{2} \)
\( c \cdot 2 \)
D. \( \frac{\sqrt{2}}{n} \)
| 2 |
Maths
|
Prenatal growth in higher vertebrate is
A. Auxetic
B. Accretionary
c. Multipilicative
D. None of the above
| 0 |
Biology
|
Evaluate the following question.
\( \lim _{x \rightarrow 2} 2 x+5 \)
| 2 |
Maths
|
A particle is moving in a straight line with maximum slope and at some moment it occupied the position
-1,-2)\( . \) Then the position of the particle when it is on \( x \) -axis is
| 2 |
Maths
|
Two identical plano-convex lenses can be combined in three ways, as shown The ratio of the focal lengths of these
combinations will be
(i)
(ii)
(iii)
A .2: 2: 1
B. 1: 1: 1
\( c \cdot 1: 2: 2 \)
D. 2: 1: 1
| 3 |
Physics
|
A secant intersects the circle at
points.
\( \mathbf{A} \cdot \mathbf{0} \)
B.
\( c \cdot 2 \)
\( D \)
| 2 |
Maths
|
In the fig, \( \square P Q R S \) and \( \square A B C R \) are
two parallelograms.
f \( \angle P=110^{\circ} \) then find the measures of
all angles of \( \square A B C R \)
| 2 |
Maths
|
Assertion
The unshared pairs residing in pure
\( \sigma-o r-\pi \) -orbital do not contribute in
dipole moment.
Reason
The \( \sigma \) -orbital is spherically symetrical, hence it contributes nothing. Similarly,
the two lobes of a pure \( \pi \) -orbital are
projected in opposite directions to
cause no effect.
A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
c. Assertion is correct but Reason is incorrect
D. Both Assertion and Reason are incorrect
| 1 |
Chemistry
|
A solid sphere of mass \( \mathrm{m} \) and radius \( \boldsymbol{R} \)
is rolling without slipping as shown in figure. Find angular momentum of the sphere about z-axis.
| 3 |
Physics
|
Which is not stable?
\( \mathbf{A} \cdot K H F_{2} \)
в. \( K l_{3} \)
c. \( C H_{3}-C H(O H)_{2} \)
D. \( C l_{3} C-C H(O H)_{2} \)
| 1 |
Chemistry
|
In which of the following aestivation of sepals \( \& \) petals one margin covers the other \( \& \) its margin is covered by previous one
A. valvate
B. Twisted
c. Imbricate
D. Quincuncial
| 0 |
Biology
|
experimentally proved the existence of protons in the
atom.
A. Goldstein
B. J.J.Thompson
c. chadwick
D. None of thea above
| 1 |
Chemistry
|
When a body of mass \( m_{1} \) moving with uniform velocity \( 40 m s^{-1} \) collides with
another body of mass \( m_{2} \) at rest, then the two together begin to move with
uniform velocity of \( 30 m s^{-1} . \) The ratio of the mass (i.e., \( \frac{m_{1}}{m_{2}} \) ) of the two bodies will be
A .1: 3
в. 3: 1
c. 1: 1.33
D. 1: 0.75
| 3 |
Physics
|
Solve \( :-5(x+4)>30 ; x \in Z \)
| 2 |
Maths
|
toppr
Q Type your question
configuration is :
\( A \)
B.
\( c \)
\( D \)
| 3 |
Physics
|
How many grams of copper will be
deposited from a solution of \( C u S O_{4} \)
bypassing 0.5 faradays of electricity? [Atomic weight of \( \boldsymbol{C u}=\mathbf{6 3 . 5} \text { g/mole }] \)
A. \( 31.75 \mathrm{g} \)
B. 63.6 g
c. \( 15.875 \mathrm{g} \)
D. 127 g
| 1 |
Chemistry
|
A posıtively chargea partıcle or cnarge
\( q^{\prime} \) enters in a uniform magnetic field 'B
directed inward and is deflected a
distance \( \boldsymbol{y}_{0} \) after traveling a distance
shown in the figure. Then
the pe
use coos FathER30DAY
\( A \)
UPGRADE NOWI
B.
\( c \)
D.
\( E \)
| 3 |
Physics
|
How many of the following oxides are basic oxides?
\( \boldsymbol{C O}_{2}, \boldsymbol{S n O}_{2}, \boldsymbol{P b O}, \boldsymbol{P b O}_{2}, \boldsymbol{P b}_{3} \boldsymbol{O}_{4}, \boldsymbol{A l}_{2} \boldsymbol{O}_{3} \)
| 1 |
Chemistry
|
Anti - markonikoff's addition of HBr is
not observed in:
A. Propene
B. But-1- ene
c. 2-butene
D. 2-pentene
| 1 |
Chemistry
|
Heat lost by the gas in the process \( B \rightarrow \)
\( C \) is
\begin{tabular}{l}
\( 4.5312 .5 . \) \\
\hline
\end{tabular}
3. 1875 J
\( c \)
D. \( 8854 J \)
| 3 |
Physics
|
If an excess of \( A g N O_{3} \) solution is added to \( 100 \mathrm{ml} \) of \( 0.024 \mathrm{M} \) solution of dichlorobis (ethylene diamine) cobalt
(III) chloride, how many moles of \( A g C l \) will be precipitated?
A . 0.0012
B. 0.0016
c. 0.0024
D. 0.0048
| 1 |
Chemistry
|
The change in reflected wave, when light wave suffers reflection at the interface
from air to glass is?
A . 0
в. \( \frac{\pi}{2} \)
\( c . \pi \)
D . \( 2 \pi \)
| 3 |
Physics
|
The coefficient of self induction of two
inductor coils are \( 20 m H \) and \( 40 m H \)
respectively. If the coils are connected
in series so as to support each other and the resultant inductance is \( 80 m H \)
then the value of mutual inductance
between the coils will be
\( \mathbf{A} \cdot 5 m H \)
в. \( 10 m H \)
c. \( 20 m H \)
D. \( 40 m H \)
| 3 |
Physics
|
Water waves are both longitudinal and
transverse. State whether true or false
A. True
B. False
| 3 |
Physics
|
If \( \int_{a}^{b} f(t) g o h(t)= \)
\( \int_{a}^{b} f o h(t) g(t) d(t), \) where \( f, g, h, \) are
non negative continuous functions on
\( [a, b] \) then possible choice of \( h(t) \) is
This question has multiple correct options
\( \mathbf{A} \cdot t \)
B. \( a-b-t \)
c. \( a+b-t \)
D. \( b-t \)
| 2 |
Maths
|
Assertion
(A) : In a metrebridge ; Copper wire is connected in the left gap and
silicon is connected in the right gap. When the temperature of both wires increase, balancing point shifts to right. Reason
(R) :Temperature coeficient of copper is (-)Ve and that of silicon is \( (+) \)
Ve.
A. Both A \& R are true and R is the correct explanation of \( A \)
B. Both A \& R are true and R is not a correct explanation of
c. A is true but R is false
D. A is false but R is true
| 3 |
Physics
|
An organic compound \( (B) \) is formed by the reaction of ethylmagnesium iodide
\( \left(\boldsymbol{C H}_{3} \boldsymbol{C H}_{2} \boldsymbol{M} \boldsymbol{g} \boldsymbol{I}\right) \) with a substance \( (\boldsymbol{A}) \)
follow by treatment with dilute aqueous
acid. Compound \( (B) \) dose not react with
\( P C C \) in dichloromethane. Identify \( (A) ? \)
A. 0
\( C H_{3}-C-H \)
B. \( \quad o \)
I
\[
C H_{3} C H_{2} C C H_{3}
\]
\( \mathbf{c} \cdot H_{2} C=O \)
D.
| 1 |
Chemistry
|
The basis on the mode of their
formation, the polymers can be classified:
A. As addition polymers only
B. As condensation polymers only
c. As copolymers
D. Both as addition and condensation polymers
| 1 |
Chemistry
|
Three man \( A, B, C \) of mass \( 40 \mathrm{kg}, 50 \mathrm{kg} \)
\( \& 60 \mathrm{kg} \) are standing on a plank of mass \( 90 \mathrm{kg}, \) which is kept on a smooth
horizontal plane. If \( A \& C \) exchange their
positions then mass B will shift
\( \mathbf{A} \cdot 1 / 3 \mathrm{m} \) towards left
B. 1/3 m towards right
c. will not move w.r.t. ground
D. \( 5 / 3 \) m toward left
| 3 |
Physics
|
Prove for \( \boldsymbol{n} \in \mathbb{N} \)
\( \mathbf{1} . \mathbf{3}+\mathbf{2} . \mathbf{3}^{2}+\mathbf{3} . \mathbf{3}^{3}+\ldots+\boldsymbol{n} . \mathbf{3}^{n}= \)
\( \frac{(2 n-1) 3^{n+1}+3}{4} \)
| 2 |
Maths
|
Catalysts lower the activation energy of a reaction:
A. Providing a surface and orientation
B. Providing an alternative mechanism with a lower activation energy
c. Increasing temperature
D. Both a and
| 1 |
Chemistry
|
The thermo-emf of a copper-constant
couple is \( 40 \mu V \) per degree. The smallest temperature difference that can be detected with this couple and
galvanometer of \( 100 \Omega \) resistance capable of measuring the minimum
current of \( 1 \mu A \) is
A \( \cdot 2.5^{\circ} \mathrm{C} \)
B. \( 2^{\circ} C \)
\( \mathbf{c} \cdot 1.5^{\circ} \mathrm{C} \)
D. \( 1^{\circ} \mathrm{C} \)
| 3 |
Physics
|
Two plane mirrors are set at right angles and a flower is placed in any position in between the mirrors. The number of images of the flower which will be seen is
A. one
B. Two
c. Three
D. Four
| 3 |
Physics
|
f the collision is elastic find verticle
component of velocity of block at B.just
after collision.
A \( \cdot \sqrt{45} \)
B. \( \sqrt{15} \)
\( c \cdot-\sqrt{15} \)
D. 20
| 3 |
Physics
|
Graph showing the variation of current
versus voltage for a material GaAs is
shown in the figure. Identify the region
of
(i) Negative resistance
(ii) Where Ohm's law is obeyed.
| 3 |
Physics
|
If \( \cos ^{2} x+\cos ^{2} 2 x+\cos ^{2} 3 x=1 \) then
A \( \cdot x=(2 n+1) \frac{\pi}{4}, n \epsilon I \)
B. \( x=(4 n+1) \frac{\pi}{4}, n \in I \)
c. \( x=n \pi \frac{\pi}{4}, n \epsilon I \)
D. none of these
| 2 |
Maths
|
If the valence shell electronic
configuration for an element is \( n s^{2} n p^{5} \) this element belongs to the group of
A. alkali metals
B. inert metals
c. noble gases
D. halogens
| 1 |
Chemistry
|
A boy is running around a rectangular
park, whose sides are in the ratio of 4
\( 3, \) at the rate of 10 metre per second
and completes a round in 42 seconds. Calculate the area of the park.
| 2 |
Maths
|
The correct sequence of decreasing acidity is:
\( \mathbf{A} \cdot\left(C H_{3}\right)_{3} C O H>\left(C H_{3}\right)_{2} C H O H>C_{2} H_{5} O H> \)
\( C H_{3} O H \)
B \( \cdot C H_{3} O H>C_{2} H_{5} O H>\left(C H_{3}\right)_{2} C H O H> \)
\( \left(C H_{3}\right)_{3} C O H \)
\( \mathbf{c} \cdot C_{2} H_{5} O H>C H_{3} O H>\left(C H_{3}\right)_{3} C O H> \)
\( \left(C H_{3}\right)_{2} C H O H \)
\( \mathbf{D} \cdot\left(C H_{3}\right)_{2} C H O H>\left(C H_{3}\right)_{3} C O H>C_{2} H_{5} O H> \)
\( C H_{3} O H \)
| 1 |
Chemistry
|
In the Lassaigne's test, the nitrogen
present in the organic compound is converted into
| 1 |
Chemistry
|
The nearest star to the earth
is
A. Moon
B. Proxima centauri
c. sirius
D. sun
| 3 |
Physics
|
A plane mirror is placed at the origin so that the direction ratios of its normal
\( \operatorname{are}(1,-1,1) . \) A ray of light, coming along the positive direction of the \( x \) axis, strikes the mirror. The direction \( \operatorname{cosines} \) of the reflected ray are
A \( \cdot \frac{1}{3}, \frac{2}{3}, \frac{2}{3} \)
B. \( -\frac{1}{3}, \frac{2}{3}, \frac{2}{3} \)
c. \( -\frac{1}{3},-\frac{2}{3},-\frac{2}{3} \)
D. \( -\frac{1}{3},-\frac{2}{3}, \frac{2}{3} \)
| 2 |
Maths
|
The given truth table is for
\( \begin{array}{lll}\text { Input } & \text { Input } & \text { Output } \\ \mathrm{A} & \mathrm{B} & \mathrm{Y} \\ 0 & 0 & 1 \\ 0 & 1 & 1 \\ 1 & 0 & 1 \\ 1 & 1 & 0\end{array} \)
A. AND gate
B. OR gate
C. NAND gate
D. NOR gate
| 3 |
Physics
|
Nitrogen is a poisonous gas because animals die in their presence why?
| 1 |
Chemistry
|
The number of de Broglie waves of an
electron in the \( n^{t h} \) orbit of an atom is :
A . \( n \)
B. \( n-1 \)
\( c \cdot n+1 \)
D. \( 2 n \)
| 3 |
Physics
|
Write short notes.
Chipko movement of Bishnoi
| 0 |
Biology
|
A stone is thrown vertically upward with a speed of \( 28 m / s \) Find the maximum height reacted by
the stone.
| 3 |
Physics
|
Spectroscopy useful for gas analysis is
A. Absorption spectroscopy
B. Infra-red spectroscopy
c. Emission spectroscopy
D. Nuclear magnetic resonance spectroscopy
| 0 |
Biology
|
Which of the following statements is
not true about fertilization in a fern
plant?
A. An egg is produced in an archegonium
B. A sperm is produced in an antheridium
c. sperm is carried by the wind to the egg
D. Eggs and sperm are produced on the same plan
| 0 |
Biology
|
Common link between apes and man
was
A. Ramapithecus
B. Dryopithecus
c. Homo erectus
D. Homo neanderthalensis
| 0 |
Biology
|
Depo-provera refers to
A. Injectible contraceptive
B. Intra uterine device
C . Implant
D. Oral contraceptive
| 0 |
Biology
|
Select the correct option regarding \( \mathbf{A}^{\prime} \) or
'B' given in the flow charts
\begin{tabular}{|l|l|l|l|l|}
\hline \( \mathrm{A} \) & \( \mathrm{B} \) & \multirow{2}{*} { Organs } & \multirow{2}{*} { Organ Systems } & \multirow{2}{*} { Organism } \\
\cline { 3 - 4 } & & & & \\
\hline
\end{tabular}
A. 'A' is cell and 'B' is tissue
B. 'A' is unicellular organism
C . 'A' is tissue
D. 'B' is cell
| 0 |
Biology
|
Mark the correct order of decreasing
acid strength of the following
compounds.
\( (b) \)
\( (c) \)
\( (d) \)
\( \mathrm{e} \)
\( A \cdot e>d>b>a>c \)
\( B \cdot b>d>a>c>e \)
\( c \cdot d>e>c>b>a \)
\( D \cdot e>d>c>b>a \)
| 1 |
Chemistry
|
Find the distance between the lines
\( \mathbf{3} \boldsymbol{x}+\mathbf{4} \boldsymbol{y}=\mathbf{9} \) and \( \boldsymbol{6} \boldsymbol{x}+\mathbf{8} \boldsymbol{y}=\mathbf{1 5} \)
| 2 |
Maths
|
Which of the following causes indigestion?
A. Ulcer
B. Thyroidism
c. Pancreatitis
D. All of the above
| 0 |
Biology
|
The temperature (T) of one mole of an ideal gas varies with its volume (V) as \( \boldsymbol{T}=-\boldsymbol{\alpha} \boldsymbol{V}^{3}+\beta \boldsymbol{V}^{2}, \) where \( \boldsymbol{\alpha} \) and \( \boldsymbol{\beta} \) are
positive constants. The maximum pressure of gas during this process is
A \( \cdot \frac{\alpha \beta}{2 R} \)
B. \( \frac{\beta^{2} R}{4 \alpha} \)
c. \( \frac{(\alpha+\beta) R}{2 \beta^{2}} \)
D. \( \frac{\alpha^{2} R}{2 \beta} \)
| 3 |
Physics
|
The value of \( \cos ^{-1}\left(\cos \left(\frac{4 \pi}{3}\right)\right) \) is
A \( \cdot 2 \pi / 3 \)
в. \( -2 \pi / 3 \)
c. \( 4 \pi / 3 \)
D. \( -4 \pi / 3 \)
| 2 |
Maths
|
The solution of \( \frac{d y}{d x}+y \tan x=\cos ^{2} x \) is:
A \( \cdot y \sec ^{2} x=c+\sin x \)
B. \( y \sec x=c+\cos x \)
c. \( y \sec ^{2} x=c+\cos x \)
D. \( y \sec x=c+\sin x \)
| 2 |
Maths
|
Which structure is cut and tied off in a
vasectomy?
A. Penis
B. Epididymis
c. Urethra
D. Vas deferens
| 0 |
Biology
|
Examine the continuity of the following function at the point \( \boldsymbol{x}=-\frac{1}{2} \) \( f(x)=\left\{\begin{array}{ll}\frac{4 x^{2}-1}{2 x+1} & x \neq-\frac{1}{2} \\ -2, & x=-\frac{1}{2}\end{array}\right. \)
| 2 |
Maths
|
Find the A.P in which the sum of any
number of terms is always equal to
three times the square of number of
terms.
| 2 |
Maths
|
Solve :-
\[
\sin 45^{\circ}+\cos 45^{\circ}
\]
| 2 |
Maths
|
If the focal length of a spherical mirror is
\( 50 \mathrm{cm}, \) then its radius of curvature is
\( \mathrm{cm} \)
A . 100
B. 50
\( c \cdot 25 \)
D. 75
| 3 |
Physics
|
Write the dispersed phase and dispersion medium of the following collodial system?
(i) Smoke
(ii) Milk
| 1 |
Chemistry
|
Assertion
Ernst Haeckal developed binomial system of nomenclature
Reason
Vernacular names are chosen for
nomenclature.
A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
c. Assertion is correct but Reason is incorrect
D. Both Assertion and Reason are incorrect
| 0 |
Biology
|
Two spherical bodies of mass \( \mathrm{M} \) and \( 5 \mathrm{M} \) and radii R and \( 2 \mathrm{R} \) respectively are released in free space with initial
separation between their centres equal to 12R. If they attract each other due to gravitational force only. then the
distance covered by the smaller body just before collision is
A . 1.5 R
в. 2.5
c. 4.5 R
D. 7.5R
| 3 |
Physics
|
If the \( \% \) composition of a 'x' component is \( 35 \%, \) find the mass of the dried 'x'
component in 100 g? mixture \( + \) beaker \( = \) \( 50 \mathrm{g}, \) mass of beaker \( =23 \mathrm{g} \)
A. \( 15.5 \mathrm{g} \)
B. \( 9.45 \mathrm{g} \)
c. \( 35.5 \mathrm{g} \)
D. \( 13.4 \mathrm{g} \)
| 1 |
Chemistry
|
The sum of the series \( \frac{1}{2 !}-\frac{1}{3 !}+\frac{1}{4 !} \ldots \ldots . \)
upto infinity is-
A \( \cdot e^{-2} \)
B \( \cdot e^{-1} \)
\( c \cdot e^{-\frac{1}{2}} \)
D. \( e^{+\frac{1}{2}} \)
| 2 |
Maths
|
The weak zone around the boundaries of
plates underneath the Earth, which is prone to slide and cause an earthquake is commonly known as:
A. Fault zone
B. Eruption zone
c. Explosive zone
D. Sliding zone
| 3 |
Physics
|
In a parallelogram, \( \angle A: \angle B=1: 2 \)
then \( \angle A \) is
A . 45
B. 60
\( c \cdot 30^{\circ} \)
D. \( 90^{\circ} \)
| 2 |
Maths
|
When light falls on semiconductors, their resistance:
A. Decreases
B. Increases
c. Initially decreases and then increasess
D. Initially increases and then decreases
| 3 |
Physics
|
Gases are good conductors of electricity
This question has multiple correct options
A . low pressure
B. high pressure
c. low temperature
D. high temperature
| 3 |
Physics
|
The heat capacity of liquid water is \( \mathbf{7 5 . 6 J} / \boldsymbol{K}-\boldsymbol{m o l}, \) while the enthalpy of
fusion of ice is \( 6.0 k J / \) mol. What is the
smallest number of ice cubes at \( 0^{\circ} C \)
each containing \( 9.0 g \) of water, needed
to cool \( 500 g \) of liquid water from \( 20^{\circ} \mathrm{C} \)
to \( 0^{\circ} C ? \)
A . 1
B. 7
c. 14
D. 21
| 3 |
Physics
|
Trait that masks the other trait is called
as
A. Dominant
B. Recessive
c. Mutant
D. None of the above
| 0 |
Biology
|
Select the correct pair in which one photosynthesizes, whereas the other does not.
A. Cyanobacteria and algae
B. Algae and fungi
c. Mosses and ferns
D. Ferns and gymnosperms
E. Gymnosperms and angiosperms
| 0 |
Biology
|
Why are coils of electric toasters and
electric irons made of an alloy rather
that an pure metal?
| 3 |
Physics
|
Give the range of wavelength of the electromagnetic waves visible to us.
A . \( 1000 A^{\circ} \) to \( 4000 A^{\circ} \)
B . \( 4000 A^{\circ} \) to \( 8000 A^{\circ} \)
c. \( 8000 A^{\circ} \) to \( 9000 A^{\circ} \)
D. \( 400 A^{\circ} \) to \( 800 A^{\circ} \)
| 3 |
Physics
|
Which of the following is (are) unsaturated compounds?
This question has multiple correct options
A. Benzene
B. Hexane
c. cyclohexene
D. Propene
| 1 |
Chemistry
|
As speed decreases, if we change medium of electromagnetic waves from air to water, frequency
A . also decreases
B. also increases.
c. remains same.
D. may increase or decrease
| 3 |
Physics
|
Which of the following is the strongest
acid?
A. \( C H_{3} \) СООН
в. \( C H_{2} \) СlСООН
c. \( C H C l_{2} C O O H \)
D. \( C C l_{3} \) СООН
| 1 |
Chemistry
|
The change in internal energy of the
methanol is
A \( \cdot 9.6 \times 10^{5} J \)
B . \( 7.14 \times 10^{5} \mathrm{J} \)
c. \( 6.89 \times 10^{4} J \)
D. \( 6.86 \times 10^{5} J \)
| 1 |
Chemistry
|
Assertion
Net charge given to a conductor resides on its outer surface under electrostatic
conditions.
Reason
Electric field lines do not enter a
conductor under electrostatic
conditions.
A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
c. Assertion is correct but Reason is incorrect
D. Both Assertion and Reason are incorrect
| 3 |
Physics
|
n the given figure, which of the
following is a line of symmetry?
A. Line A
B. Line B
c. Line
D. Non
| 2 |
Maths
|
Out of the following whose specific heat is maximum?
A . lead
B. brass
c. glass
D. iron
| 3 |
Physics
|
In the diagram, section A represents:
\( C \)
\( D \)
A. N-type germanium
B. P-type germanium
C. Anode
D. Diode
| 3 |
Physics
|
The rate law for the reaction below is
given by the expression \( \boldsymbol{k}[\boldsymbol{A}][\boldsymbol{B}] \)
\( A+B \rightarrow \) Product
If the concentration of \( B \) is increased
from 0.1 to 0.3 mole, keeping the value
of \( A \) at 0.1 mole, the rate constant will
be:
\( \mathbf{A} \cdot 3 k \)
B. \( 9 k \)
c. \( k / 3 \)
D.
| 1 |
Chemistry
|
If the concentration of \( O H^{-} \) ions in the
reaction \( \boldsymbol{F e}(\boldsymbol{O H})_{3}(\boldsymbol{s}) \rightleftharpoons \boldsymbol{F} \boldsymbol{e}^{+3}(\boldsymbol{a q} \cdot)+ \)
\( 3 O H^{-}(a q .) \) is decreased upto \( \frac{1}{4} \) times
then equilibrium concentration of \( \boldsymbol{F} \boldsymbol{e}^{+} \) will increase upto:
A. 16 times
B. 64 times
c. 4 times
D. 8 times
| 1 |
Chemistry
|
The figure shows the \( P \) - \( V \) plot of an ideal gas taken through a cycle ABCDA. The part \( A B C \) is a semi-circle and CDA is
half of an ellipse. Then
This question has multiple correct options
A. the process during the path \( A \rightarrow B \) is isotherma
B. heat flows out of the gas during the path \( B \rightarrow C \rightarrow D \)
c. work done during the path \( A \rightarrow B \rightarrow C \) is zero
D. positive work is done by the gas in the cycle ABCDA
| 3 |
Physics
|
An object of height \( 10 \mathrm{cm} \) is placed at a distance of \( 100 \mathrm{cm} \) before the convex
mirror perpendicular below the
principal axis. If the focal length of the mirror is \( 10 \mathrm{cm}, \) on applying the Cartesian sign convention, find the object distance
A . -100cm
B. \( +100 \mathrm{cm} \)
c. \( 50 \mathrm{cm} \)
D. -50 cm
| 3 |
Physics
|
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