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The respiratory quotient during cellular respiration would depend on
A. The nature of enzymes involved
B. The nature of the substrate.
c. The amount of carbondioxide released.
D. The amount of oxygen utilized. | 0 | Biology |
A large tank is filled with water (density
\( \rho \), upto height h. Water is coming out from section (4). Fluid pressure at
section (3) is:
(Given \( : A_{2}=A_{4}=2 A_{3} \) and
\( \boldsymbol{A}_{2}, \boldsymbol{A}_{3}, \boldsymbol{A}_{4}<<\boldsymbol{A}_{1} ; \) atmospheric
pressure \( =P_{0} . \) Assume water to be nonviscous and incompressible.
A. \( P_{0}+\rho g h \)
в. \( P_{0}-\rho g h \)
\( c \)
D. \( P_{0}-3 \rho g h \) | 3 | Physics |
In the adjoining figure, name the
following pairs of angles.
Equal supplementary angles | 2 | Maths |
In a n-p-n transistor, the collector current is \( 10 \mathrm{mA} \). If \( 10 \% \) of the electrons
are lost in the base, then the emitter current is:
A . \( 10 \mathrm{mA} \)
B. \( 0.9 \mathrm{mA} \)
c. \( 0.09 \mathrm{mA} \)
D. \( 11.1 \mathrm{m} \) | 3 | Physics |
\( \boldsymbol{f}(\boldsymbol{x})=\boldsymbol{4}-(\boldsymbol{6}-\boldsymbol{x})^{2 / 3} \) in \( [\mathbf{5}, \boldsymbol{7}] \)
A. Lagrange's theorem is applicable
B. Rolle's theorem is applicable
C. Lagrange's theorem is applicable but not the Roll's theorem
D. Both theorem are not applicable | 2 | Maths |
Two particles of mass \( m \) each are tied
at the ends of a light string of length \( 2 a \)
The whole system is kept on a frictionless horizontal surface with the
string held tight so that each mass is at a distance \( a \) from the center \( P \) (as
shown in the figure). Now, the mid-point of the string is pulled vertically downwards with a small but constant
force \( F \). As a result, the particles move
towards each other on the surface. Find
the magnitude of acceleration, when the separation between them becomes
\( \mathbf{2} \boldsymbol{x} \) | 3 | Physics |
Why red colour is given to signals to be viewed from a distance? | 3 | Physics |
A particle performing periodic motion satisfies the equation:
\( \mathbf{A} \cdot f(t)=f(t)+T \)
B. \( f(t)=f(t)-T \)
c. \( f(t)=f(t+T) \)
D. None of the above | 3 | Physics |
Choose the correct match from Column
'B' for Column 'A'. | 0 | Biology |
Identify the substance underlined, in
each of the following cases:
The electrolyte used for electroplating an article with silver. | 1 | Chemistry |
If there is an error of \( k \% \) in measuring the edge of a cube, then the percent error in estimating its volume is
\( A \cdot k \)
B. \( 3 k \)
\( c \cdot \frac{k}{3} \)
D. none of these | 2 | Maths |
When the right ventricle contract the blood goes into
A. Aorta
B. Brain
c. Pulmonary artery
D. None | 0 | Biology |
Bleaching of flowers by \( C l_{2} \) is
permanent while bleaching by \( S O_{2} \) is temporary. Why? | 1 | Chemistry |
Which is lare false about electronegativity order of the following
elements ?
This question has multiple correct options
A \( . P>s i \)
в. \( C>N \)
c. \( C>B r \)
\( \mathbf{D} \cdot S e>C a \) | 1 | Chemistry |
During electrophoresis of colloidal sol of \( \boldsymbol{F} \boldsymbol{e}(\boldsymbol{O} \boldsymbol{H})_{3}, \) the colloidal particles
A. Move towards anode and cathode both
B. Move towards cathode
c. Move towards anode
D. Do not move | 1 | Chemistry |
What will be the radius of the circle
when the cord breaks?
A. \( 4.0 m \)
в. \( 1.0 m \)
\( c .3 .0 m \)
D. 2.0m | 3 | Physics |
When the load on a wire is increasing slowly from 2 kg to 4 kg, the elongation increases from \( 0.6 \mathrm{mm} \) to \( 1 \mathrm{mm} \). The
work done during this extension of the
wire is \( \left(\boldsymbol{g}=\mathbf{1 0 m} / \boldsymbol{s}^{2}\right) \)
B . \( 0.4 \times 10^{-3} \) J
c. \( 8 \times 10^{-2} \) j
D. \( 10^{-3} \) 」 | 3 | Physics |
\( \boldsymbol{C H}_{3}-\boldsymbol{C H}=\boldsymbol{C H}_{2} \frac{\boldsymbol{B r}_{2}}{\Delta} \frac{\boldsymbol{M} \boldsymbol{g}}{\text {Dryether}} \)
\( \frac{\boldsymbol{C} \boldsymbol{H}_{3}-\stackrel{\boldsymbol{N}}{\boldsymbol{C}-\boldsymbol{C} \boldsymbol{H}_{3}}}{\boldsymbol{N H}_{4} \boldsymbol{C l}} \quad \frac{\boldsymbol{H}^{+}}{\boldsymbol{\Delta}} \quad(\boldsymbol{M} \boldsymbol{a} \boldsymbol{j} \boldsymbol{o} \boldsymbol{r}) \)
product of above reaction is:
\( \mathrm{A} \)
\( \mathrm{CH}_{2}=\mathrm{CH}-\mathrm{CH}_{2}-\mathrm{N}-\mathrm{CH}_{3} \)
B. \( H_{2} C=C H-C H=C_{C H_{3}}-C H_{3} \)
c.
\[
H_{2} C=C H-C H_{2}-\underbrace{C}_{\mid}^{O H}-C H_{3}
\]
D. \( H_{2} C=C H-C H_{2}-C_{\} C H-C H_{2}-O H \) | 1 | Chemistry |
The side of a square field is 120 meters. The cost of preparing a grass lawn is Rs. 35 per square meter. How much will
it cost, if the entire field is converted into a lawn?
A . \( R s .404000 \)
B. \( R s .504000 \)
c. \( R s .506000 \)
D. Rs.500000 | 2 | Maths |
The frequency of oscillation of current in
the inductance is
A \( \cdot \frac{1}{3 \sqrt{L C}} \)
в. \( \frac{1}{6 \pi \sqrt{L C}} \)
c. \( \frac{1}{\sqrt{L C}} \)
D. \( \frac{1}{3 \pi \sqrt{L C}} \) | 3 | Physics |
Why was there no zero four in the original Mendeleefs Periodic Table? | 1 | Chemistry |
Check the correctness of the relation \( S_{n t h}=u+\frac{a}{2}(2 n-1), \) where \( u \) is
initial velocity, \( a \) is acceleration and
\( S_{n t h} \) is the distance travelled by the body
in \( n t h \) second | 3 | Physics |
In the shown figure a current 2i is
flowing in a straight conductor and entering along the diameter of the
circular loop of similar conductor
through the point A. The current is leaving the loop along another similar
semi-infinite conductor parallel to the plane of the loop through the other opposite end D of the diameter. | 3 | Physics |
If \( y=2^{2} 3^{2 x} 5^{-5} 7^{-5} \) then \( \frac{d y}{d x}= \) | 2 | Maths |
Factorise :
\( z^{2}-\left(x^{2}-2 x y+y^{2}\right) \) | 2 | Maths |
A certain vector in the xy-plane has an
x-component of \( 4 \mathrm{m} \) and a y-component of \( 10 \mathrm{m} . \) It is then rotated in the xy-plane so that its \( x \) -component is doubled Then, its new y-component is (approximately)
A. \( 20 \mathrm{m} \)
B. 7.2 \( m \)
c. \( 5.0 \mathrm{m} \)
D. \( 4.5 \mathrm{m} \) | 2 | Maths |
A solid consisting of a right circular cone of height \( 120 \mathrm{cm} \) and radius
\( 60 \mathrm{cm} \) standing on a hemisphere of
radius \( 60 \mathrm{cm} \) is placed upright in a right circular cylinder full of water such that it touches the bottom. Find the
volume of water left in the cylinder, (in
\( \left.m^{3}\right) \) if the radius of the cylinder is
\( 60 \mathrm{cm} \) and its height is \( 180 \mathrm{cm} ? \) | 2 | Maths |
Fill in the blanks in the following:
(a) A person \( 1 \mathrm{m} \) in front of a plane mirror seems to be
from his image.
(b) If you touch your ear with
right hand in front of a plane mirror it will be seen in the mirror that your right
ear is touched with
(c) The size of the pupil becomes when you see in dim
light.
(d) Night birds have
cones than rods in their eyes. | 3 | Physics |
Find the current through the \( 10 \Omega \)
resistor shown in figure:
\( \mathbf{A} \cdot 0.5 A \)
B. \( 1 A \)
\( c \cdot 2 A \)
D. \( 5 A \) | 3 | Physics |
Using properties of determinants, prove
that
\[
\boldsymbol{\omega}\left|\begin{array}{ccc}
\boldsymbol{x} & \boldsymbol{y} & \boldsymbol{z} \\
\boldsymbol{x}^{2} & \boldsymbol{y}^{2} & \boldsymbol{z}^{2} \\
\boldsymbol{y}+\boldsymbol{z} & \boldsymbol{z}+\boldsymbol{x} & \boldsymbol{x}+\boldsymbol{y}
\end{array}\right|=(\boldsymbol{x}-
\]
\( \boldsymbol{y})(\boldsymbol{y}-\boldsymbol{z})(\boldsymbol{z}-\boldsymbol{x})(\boldsymbol{x}+\boldsymbol{y}+\boldsymbol{z}) \) | 2 | Maths |
Which of the following aqueous solutions will exhibit the highest boiling point?
A . \( 0.01 M \) urea
в. \( 0.01 M \) К \( N O_{3} \)
c. \( 0.01 M \) Na\( _{2} \) SO \( _{4} \),
D. \( 0.015 M C_{6} H_{12} O_{6} \) | 1 | Chemistry |
Let the discrete random variable \( \boldsymbol{X}=\boldsymbol{x} \)
has the probabilities given by \( \frac{x}{6} \) for \( x= \)
\( 0,1,2,3, \) then its mean is
A \( \cdot \frac{1}{3} \)
в. \( \frac{5}{3} \)
\( c \cdot \frac{7}{3} \)
D. \( \frac{9}{3} \) | 2 | Maths |
Solve:
\( \boldsymbol{I}=\int \frac{\boldsymbol{d} \boldsymbol{x}}{(\boldsymbol{x}+\mathbf{1}) \sqrt{\mathbf{1}-\boldsymbol{x}^{2}}} \) | 2 | Maths |
Complete the following food chain with
the appropriate component Grass - grasshopper - .......... - snake | 0 | Biology |
The approximate value of quantum number \( n \) for the circular orbit of
hydrogen 0.0001 mm diameter is
A. 1000
B. 60
c. 10000
D. 31 | 3 | Physics |
What is the speed of an electron whose
de Broglie wavelength is \( 0.1 n m ? \) By what potential difference, must have such an electron accelerated from an
initial speed zero? | 1 | Chemistry |
The distance of a galaxy from Earth is of the order of \( 10^{25} \mathrm{m} \). Calculate the order
of magnitude of the time taken by light to reach us from the galaxy. | 3 | Physics |
In a given transformer for a given applied voltage, losses which remain constant irrespective of load changes
are
A. friction and windage losses
B. copper losses
c. hysteresis and eddy current losses
D. none of the above | 3 | Physics |
A charge \( q \) is released in presence of electric (E) and magnetic field (B) then
after some time its velocity is v then:-
\( A \cdot V \propto E \)
в. \( v \propto \frac{1}{E} \)
\( c \cdot V^{2} \propto E \)
D. \( V \propto B^{\circ} \) | 3 | Physics |
Two players \( A \) and \( B \) toss a fair coin cyclically in the following order \( A, A, B, A, A, B, \ldots \) till a head shows. Let
\( \boldsymbol{\alpha}(\boldsymbol{\beta}) \) denote the probability that \( \boldsymbol{A}(\boldsymbol{B}) \)
gets the head first. Then
This question has multiple correct options
A \( \cdot \alpha=\frac{6}{7} \)
в. \( \alpha=\frac{5}{7} \)
c. \( _{\beta}=\frac{1}{7} \)
D. \( _{\beta}=\frac{2}{7} \) | 2 | Maths |
A cuboid with equal length, breadth
and height is called a | 2 | Maths |
In figure (ii) given below, \( \boldsymbol{A B} \| \boldsymbol{D} \boldsymbol{E} \) and
\( \boldsymbol{B} \boldsymbol{D} \| \boldsymbol{E} \boldsymbol{F} . \) Prove that \( \boldsymbol{D} \boldsymbol{C}^{2}=\boldsymbol{C} \boldsymbol{F} \times \boldsymbol{A} \boldsymbol{C} \) | 2 | Maths |
\( \frac{\boldsymbol{d}}{\boldsymbol{d} \boldsymbol{x}}[\log (\sec \boldsymbol{x}-\tan \boldsymbol{x})] \) is equal to:
A . \( -\sec x \)
B. \( \sec x+\tan x \)
\( c . \sec x \)
D. \( \sec x-\tan x \) | 2 | Maths |
(a) Write Faraday's second law of
electrolysis
(b) Draw labelled diagram of standard Hydrogen electrode | 1 | Chemistry |
The integral of \( \int e^{x}(\sin x+\cos x) d x \) is
\( \mathbf{A} \cdot e^{x} \cos x+c \)
B \( \cdot e^{x} \sin x+c \)
\( \mathbf{c} \cdot e^{x} \sec x+c \)
D. none of this | 2 | Maths |
Consider the following frequency distribution:
\( \begin{array}{lllll}\text { Class } & 0- & 6- & 12- & 1 \\ & 5 & 11 & 17 & 2\end{array} \)
Frequency 13 10 15
The upper limit of the median class is
A. 17
в. 17.5
c. 18
D. 18.5 | 2 | Maths |
The ultimate source of hydroelectric energy is:
A. potential energy of water
B. kinetic energy of water
c. solar energy
D. chemical energy | 3 | Physics |
The molar conductance (in
\( \left.\mathbf{\Omega}^{-1} \boldsymbol{c m}^{2} \boldsymbol{m o l}^{-1}\right) \) of \( \boldsymbol{K}_{2} \boldsymbol{S} \boldsymbol{O}_{4} \) solution is: | 1 | Chemistry |
Which of the following species has a linear shape?
A. \( N O_{2} \)
в. \( S O_{2} \)
c. \( N O_{2}^{+} \)
D. \( O_{2} \) | 1 | Chemistry |
A dust particle has mass equal to \( 10^{-11} g, \) diameter \( 10^{-4} c m \) and velocity \( 10^{-4} \mathrm{cm} / \mathrm{s} . \) The error in measurement of
velocity is \( 0.1 \% . \) What will be the uncertainty in its position?
A \( \cdot 0.527 \times 10^{10} \mathrm{cm} \)
B. \( 5.27 \times 10^{9} \mathrm{cm} \)
c. \( 0.527 \times 10^{-15} \mathrm{cm} \)
D. \( 0.527 \times 10^{-9} \mathrm{cm} \) | 1 | Chemistry |
Which of the following is capable of delaying yellowing of leaves?
A . Gibberellins
B. Cytokinins
c. АВА
D. Auxins | 0 | Biology |
Select the incorrect statement.
A. Ribozymes are nucleic acids with catalytic power.
B. Nucleic acids serve as genetic material.
C. Proteins, nucleic acids and polysaccharides are the only three types of macromolecules found in the living system.
D. Collagen is the most abundant protein in the whole of the biosphere and RuBisCo is the most abundant protein in animal world. | 0 | Biology |
Which one of the following is travelling with the fastest speed?
A. An athlete running with a speed of \( 10 \mathrm{m} / \mathrm{s} \)
B. A bicycle moving with a speed of 200 \( \mathrm{m} / \mathrm{min} \)
c. A tortoise covering 100 metres in 15 minutes
D. A motorcycle moving with a speed one km/h | 3 | Physics |
A virtual image larger than the object can be produced by a :
This question has multiple correct options
A. concave lens
B. Concave mirror
c. Convex mirror
D. Convex lens | 3 | Physics |
Blood from the left ventricle is pumped
to
A. Lungs
B. Left auricle
c. Right ventricle
D. All parts of the body | 0 | Biology |
In each of the following state if the statement is true (T) or false (F):
An equilateral triangle is isosceles also.
A. True
B. False | 2 | Maths |
\( C_{6} H_{6} C I_{6} C_{6} H_{6} C I_{6} \) on treatment with alcoholic KOHKOH yields.
\( \mathbf{A}: \boldsymbol{C}_{\mathbf{6}} \boldsymbol{H}_{\mathbf{6}} \boldsymbol{C}_{\mathbf{6}} \boldsymbol{H}_{\mathbf{6}} \)
\( \mathbf{B}: \boldsymbol{C}_{\mathbf{6}} \boldsymbol{H}_{\mathbf{3}} \boldsymbol{C} \boldsymbol{I}_{\mathbf{3}} \boldsymbol{C}_{\mathbf{6}} \boldsymbol{H}_{\mathbf{3}} \boldsymbol{C} \boldsymbol{I}_{\mathbf{3}} \)
\( \mathrm{c}:\left(C_{6} H_{6}\right) O H\left(C_{6} H_{6}\right) O H \)
\( \mathbf{D}: \boldsymbol{C}_{\mathbf{6}} \boldsymbol{H}_{\mathbf{6}} \boldsymbol{C} \boldsymbol{I}_{\mathbf{4}} \) | 1 | Chemistry |
Arithmetic progression whose nth term
is \( 3 n-2 \) is
A \( .1,4,7,10 \ldots \)
в. \( 1,3,7,9 \ldots \)
c. \( 1,2,7,11 \ldots \)
D. \( 2,4,6,8 \dots \) | 2 | Maths |
The potential at a point P due to an electric dipole is \( 1.8 \times 10^{5} V . \) If \( P \) is at a
distance of \( 50 \mathrm{cm} \) apart from the centre O of the dipole and if CP makes an
angle \( 60^{\circ} \) with the positive side of the
axial line of the dipole, what is the moment of the dipole?
A. \( 10 \mathrm{c}-\mathrm{m} \)
B. \( 10^{-3} \mathrm{c}-\mathrm{m} \)
\( c \cdot 10^{-4} c-m \)
D. \( 10^{-5} \mathrm{c}-\mathrm{m} \) | 3 | Physics |
If the areas of two similar triangles are equal then the triangles:
A. are congruent
B. have equal length of corresponding sides
c. (A) and (B)
D. None of these | 2 | Maths |
The number of moles of \( \boldsymbol{K}_{\mathbf{2}} \boldsymbol{C r}_{\mathbf{2}} \boldsymbol{O}_{\mathbf{7}} \)
reduced by 3 mol of \( S n^{2+} \) ions is : | 1 | Chemistry |
\( \boldsymbol{C H}_{3}-\boldsymbol{C H}_{2}-\boldsymbol{O}-\boldsymbol{C H}_{2}-\boldsymbol{C H}_{3} \) react
with hot and excess HI the product formed is:
A. \( C H_{3} C H_{2} I \) and \( C H_{3} C H_{2} O H \)
в. \( C H_{3} C H_{2} \) ОН
c. \( C H_{3} C H_{2} I \)
D. None of these | 1 | Chemistry |
Identify the primary cause of global warming.
A. Emission of \( C O_{2} \)
B. Emission of \( O_{2} \)
c. Both a and \( b \)
D. None of these | 1 | Chemistry |
When waves of same intensity from two coherent sources reach a point with
zero path different the resulting intensity is \( \mathrm{K} \). When the above path difference is \( \lambda / 4 \) the intensity becomes
\( A \cdot K \)
B. K/2
\( c \cdot k / 4 \)
D. K/8 | 3 | Physics |
What is the nucleos number of an
atom?
A. The number of electrons, neutrons and protons in the nucleus
B. The number of neutrons and protons in the nucleus
C. The number of neutrons in the nucleus
D. The number of protons in the nucleus | 1 | Chemistry |
whose hemispherical base is of
diameter \( 0.20 \mathrm{m} . \) The height of the flask
is \( 0.25 \mathrm{m} \). The flask is filled to the brim
with 2.5 litres \( \left(1 \text { litre }=10^{-3} m^{3}\right) \) of
water and sealed with a glass lid.
What is the approximate magnitude of
the total vertical force exerted by the
water on the curved surface of the
flask? (Take the acceleration due to
gravity, \( g, \) to be \( 10 m s^{-2} \) ).
\( A \cdot O N \)
B. 78.5
c. 53.5 N
D. 25.0 | 3 | Physics |
At what value of \( \eta \) will the velocity of the disc after the collision be equal to zero?
A. \( \eta=4 \)
В . \( \eta=5 \)
\( \mathbf{c} \cdot \eta=6 \)
D. \( \eta=7 \) | 3 | Physics |
Which of the following complex ion has least stability?
A \( \cdot\left[\operatorname{Co}\left(N H_{2}\right)_{6}\right]^{2+} \)
в. \( \left[\operatorname{Co}(C N)_{6}\right]^{3-} \)
c. \( \left[\operatorname{Co}\left(N H_{3}\right)_{6}\right]^{3} \)
D \( \cdot\left[C o(C O)_{6}\right]^{3+} \) | 1 | Chemistry |
Solution of the equation \( \frac{d y}{d x}=1+ \)
\( \boldsymbol{x} \boldsymbol{y}+\boldsymbol{x}+\boldsymbol{y} \) is
\( \mathbf{A} \cdot(1+y)(1+x)=c \)
B \( \cdot \log (1+y)=1+x+c \)
\( ^{\mathbf{C}} \cdot \ln |1+y|=x+\frac{x^{2}}{2}+c \)
D \( \ln |1+y|+x+\frac{x^{2}}{2}+c=0 \) | 2 | Maths |
Seema can embrodier \( \frac{1}{5} \) of a Kurta in 4
days. How long will it take her to embroder it completely? | 2 | Maths |
In situation \( 2, \) if \( h_{2} \) is further decreased
then
A. cylinder will not move up an remains at its original position
B. for \( h_{2}=h / 3 \) cylinder again starts moving up
C. for \( h_{2}=h / 4 \) cylinder again starts moving up
D. for \( h_{2}=h / 5 \) cylinder again starts moving up | 3 | Physics |
Prove that:
\( \lim _{x \rightarrow \frac{\pi}{2}} \frac{\tan 2 x}{x-\frac{\pi}{2}} \) | 2 | Maths |
If the corresponding angles of two triangles are equal then they are always
congruent. The given statement
A . Is always true
B. Is always false
c. can be true
D. can be determined | 2 | Maths |
The number of waves made by a Bohr electron in an orbit of maximum
magnetic quantum number +2 is:
A . 3
B. 4
\( c \cdot 2 \)
D. | 1 | Chemistry |
In a certain gas \( \frac{2}{5} \) th of the energy of molecules is associated with the
rotation of molecules and the rest of it
is associated with the motion of the
centre of mass. The average translation energy of one such molecule, when the
temperature is \( 27^{\circ} \mathrm{C} \) is given by \( x \times \)
\( 10^{-23} J \),then find \( x ? \)
A . 62
B. 623
c. 6.21
D. 62.1 | 3 | Physics |
\( \frac{\boldsymbol{d}}{\boldsymbol{d} \boldsymbol{x}}\left(e^{\log x}\right)= \)
\( \mathbf{A} \cdot \mathbf{1} \)
в.
c. \( x^{2} / 2 \)
D. - | 2 | Maths |
Explain why: In the electrolysis of alumina using Hall Heroult's Process the electrolyte is covered with powdered coke. | 1 | Chemistry |
Match the entries in column I with
column II | 2 | Maths |
Ammonia gas is formed by the combination of nitrogen and hydrogen.
\( N_{2}+3 H_{2} \rightarrow 2 N H \)
In the above equation:
This question has multiple correct options
A. nitrogen and hydrogen are reactants
B. one molecule of nitrogen combine with 3 molecule of hydrogen and forms two molecule of ammonia
C. one volume of nitrogen and three volume of hydrogen combine and give 2 volume of ammonia gas
D. reactants and products are not gases | 1 | Chemistry |
Which statement represents the inverse of the statement "If it is snowing then
Skeeter wears a sweater"?
A. If Skeeter wears a sweater then it is snowing
B. If Skeeter does not wear a sweater then it is not snowing
C. If it is not snowing then Skeeter does not wear a sweater
D. If it is not snowing then Skeeter wears a sweater | 2 | Maths |
The reaction of \( \left(\boldsymbol{C H}_{3}\right)_{3} \boldsymbol{C O N a} \) with
reagent is the most easy.
A. \( C_{6} H_{5} B r \)
B \( \cdot\left(C H_{3}\right)_{2} C H B r \)
\( \mathbf{c} \cdot\left(C H_{3}\right)_{3} C B r \)
D. \( C H_{3} C H_{2} B r \) | 1 | Chemistry |
Define one Curie. | 3 | Physics |
A power transmission line feeds input power \( t 2300 \mathrm{V} \) to a step-down transformer with its primary windings having 4000 turns. The output power is delivered at \( 230 \mathrm{V} \) by the transformer. If the current in the primary of the transformer is \( 5 \mathrm{A} \) and its efficiency is \( 90 \%, \) the output current would be :
A . 25 A
B. 50 A
\( c .35 \mathrm{A} \)
D. 45 A | 3 | Physics |
All of the following statements are related to the kinetic molecule theory of
gases except:
A. gas molecules have no inter-molecular forces
B. gas particles are in random motion
C. the collisions between gas particles are elastic
D. gas particles have no volume
E. the average kinetic energy is proportional to the celsius temperature of the gas | 1 | Chemistry |
Assertion
To overcome electrostatic force of
attraction between electrons and
nucleus, they revolve around the
nucleus.
Reason
Mass of the atom is almost due to its
nucleus.
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. Assertion is incorrect but Reason is correct. | 1 | Chemistry |
Find the effective resistance of the
circuit as shown in the figure.
A. 10 ohm
B. 5 ohm
\( c .15 \) ohm
D. 4 ohm | 3 | Physics |
Which fraction shows the part of the
circle that is shaded?
\( A \cdot 2 \)
\( \overline{9} \)
B. \( \frac{2}{8} \)
\( c \cdot 2 \)
7
D. 2
\( G \) | 2 | Maths |
Which row correctly shows a primary,
secondary and a tertiary alcohol?
3
\( r \)
) | 1 | Chemistry |
\( f(x)=\frac{3}{2} x+b \)
In the function above, \( b \) is a constant. If
\( \boldsymbol{f}(\boldsymbol{6})=\mathbf{7}, \) what is the value of \( \boldsymbol{f}(-\mathbf{2}) ? \)
A . -
B . - -
\( c . \)
\( D \) | 2 | Maths |
Give two reactions in which transition
metals or their compound acts as catalysts. | 1 | Chemistry |
The energy of an electron in the \( 3 s \)
orbital (excited state) of H-atom is:
A . \( -1.5 e V \)
B . \( -13.6 e V \)
c. \( -3.4 e V \)
D. \( -4.53 e V \)
E. \( 4.53 e V \) | 1 | Chemistry |
Rewrite the following statement with "if-then" in five different ways conveying
the same meaning. If a natural number is odd then its square is also odd. | 2 | Maths |
Archaeologists often come to different
conclusions when studying the earliest
fossils due to
A. The fact that a few countries limit access to the
artifacts
B. The fact that the universal process for dating the remains is problematic
C. The fact that many fossils are decaying
D. The limited amount of archaeological remains
E. Fear of upsetting religious communities | 3 | Physics |
Heat will flow from
A. Hot body to cold body
B. Cold body to hot body
C. two bodies at the same temperature
D. None of these | 3 | Physics |
Rutherfords alpha particle scattering
experiment concluded that:
A. mass and energy are related
B. electrons occupy space around the nucleus
C. neutrons are buried deep in the nucleus
D. the point of impact with matter can be precisely determined | 1 | Chemistry |
The conversion of primary aromatic ami nes into diazonium salts is known as
A. decarboxylation
B. diazotization
c. ammonolysis
D. none of these | 1 | Chemistry |
As a wave propagates,
This question has multiple correct options
A. the wave intensity remains constant for a planewave
B. the wave intensity decreases as the inverse of the distance from the source for a spherical wave
C. the wave intensity decreases as the inverse square of the distance form the source for a spherical wave
D. the wave intensity decreases as the inverse of the distance for a line source | 3 | Physics |
Value of universal gravitational
constant \( G \) in \( \mathrm{CGS} \) unit is-
A \( \cdot 6.67 \times 10^{8} \mathrm{cm}^{3} g^{1} s \)
B . \( 6.67 \times 10^{8} \mathrm{cm}^{3} g^{-1} s^{-2} \)
c. \( 6.67 \times 10^{9} \mathrm{cm}^{3} g^{1} s^{2} \)
D. \( 6.67 \times 10^{7} \mathrm{cm}^{3} g^{-1} s^{2} \) | 3 | Physics |
State whether true or false.
\( \frac{2}{7} \) is an irrational number.
A. True
B. False | 2 | Maths |
If \( f(x) \) and \( g(x) \) are two solutions of the differential equation \( a \frac{\mathrm{d}^{2} \mathbf{y}}{\mathbf{d x}^{2}}+\mathbf{x}^{2} \frac{\mathbf{d y}}{\mathbf{d x}}+ \)
\( \mathbf{y}=\mathbf{e}^{\mathbf{X}}, \) then \( f(\boldsymbol{x})-\boldsymbol{g}(\boldsymbol{x}) \) is the solution
of
A \( \cdot a^{\frac{d^{2} y}{d x^{2}}}+\frac{d y}{d x}+y=e^{x} \)
B. \( a^{2} \frac{d^{2} y}{d x^{2}}+y=e^{x} \)
\( ^{\mathbf{C}} \cdot \underset{\mathrm{d} \mathrm{x}^{2}}{\frac{\mathrm{d}^{2} \mathrm{y}}{\mathrm{d} \mathrm{x}}}+\mathrm{x}^{2} \frac{\mathrm{d} \mathrm{y}}{\mathrm{d}}=0 \)
D. \( a \frac{\mathrm{d}^{2} \mathrm{y}}{\mathrm{dx}^{2}}+\mathrm{y}=\mathrm{e}^{\mathrm{x}} \) | 2 | Maths |
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