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The conversion of atomic hydrogen into ordinary hydrogen is:
A. Exothermic reaction
B. Endothermic reaction
c. Nuclear change
D. Photochemical change
| 1 |
Chemistry
|
If collision between the block and the
incline is completely elastic, the the vertical (upward) component of the velocity of blocks at point \( \boldsymbol{B} \)
immediately after it strikes the second
incline is
A \( . \sqrt{30} \mathrm{m} / \mathrm{s} \)
B. \( \sqrt{15} \mathrm{m} / \mathrm{s} \)
\( c .0 \)
D. \( -\sqrt{15} \mathrm{m} / \mathrm{s} \)
| 3 |
Physics
|
If \( x^{2}+\frac{1}{x^{2}}=51, \) find the value of \( x^{3}- \)
1
\( \overline{x^{3}} \)
| 2 |
Maths
|
Let \( y=2^{x}+x^{2}+2 \) then find \( \frac{d y}{d x} \)
| 2 |
Maths
|
In which of the following molecules, the central atom does not have \( s p^{3} \) hybridization?
A \( . C H_{4} \)
в. \( S F_{4} \)
\( \mathbf{c} \cdot B F_{4} \)
D. \( N H_{4}^{+} \)
| 1 |
Chemistry
|
In the given figure, the triangles are
congruent, Find the values of \( x \) and \( y \)
| 2 |
Maths
|
The electronic arrangements of four elements i, ii, iii, iv are:
(iii) \( 1 s^{2} 2 s^{2} 2 p^{5} \) (iv)
(i) \( 1 s^{2} \) (ii) \( 1 s^{2} 2 s^{2} 2 p^{2} \) \( 1 s^{2} 2 s^{2} 2 p^{6} \)
The tendency to form ionic bond is maximum in:
\( A \)
B. i i
c. iii
\( D . \) iv
| 1 |
Chemistry
|
A free nucleus of mass 24 amu emits a
gamma photon (when initially at rest). The energy of the photon is 7 MeV. The recoil energy of the nucleus in KeV is:
(Assuming 1 amu \( =931 \) MeV )
A . 2.2
B. 1.
c. \( 3 . \)
D. 22
| 1 |
Chemistry
|
Phosphine is not evloved when:
A. White phosphorus is boiled with a strong
solution of
\( \mathrm{Ba}(\mathrm{OH})_{2} \)
B. Phosphorus acid is heated
C. Calcium hypophosphite is heated
D. Metaphosphoric acid is heated
| 1 |
Chemistry
|
In displacement method, the distance
between object and screen is 96 cm.
The ratio of lengths of two images
formed by a converging lens placed
between them is \( 4 . \) Then
This question has multiple correct options
A. Ratio of the length of object to the length of shorter image is 2
B. Distance between the two positions of the lens is \( 32 \mathrm{cm} \)
C. Focal length of the lens is \( 64 / 3 \mathrm{cm} \)
D. When the shorter image is formed on screen, distance of the lens from the screen is \( 32 \mathrm{cm} \)
| 3 |
Physics
|
If the vector \( O P \) in \( X Y \) plane whose
magnitude is \( \sqrt{3} \) makes an angle \( 60^{\circ} \)
with \( Y- \) axis, the length of the
component of the vector in direction of
\( X- \) axis is :
A . 1
B. \( \sqrt{3} \)
\( c \cdot \frac{1}{2} \)
D. \( \frac{3}{2} \)
| 2 |
Maths
|
The number of turns per unit length of a
long solenoid is \( 10 . \) If its average radius is \( 5 \mathrm{cm} \) and it carries a current of \( 10 \mathrm{A} \)
then the ratio of flux densities obtained
at the centre and at one endpoint will be
A .1: 2
B . 2: 1
c. 1: 1
D. 1: 4
| 3 |
Physics
|
An unpolarized beam of intensity \( 2 a^{2} \) passes through a thin Polaroid. Assuming zero absorption in the Polaroid, the intensity of emergent planes polarized light will be
\( \mathbf{A} \cdot 2 a^{2} \)
в. \( a^{2} \)
\( c \cdot \sqrt{2} a \)
D. \( \frac{a^{2}}{\sqrt{2}} \)
| 3 |
Physics
|
A glass hemisphere of radius \( R \) and of
material having refractive index 1.5 is
silvered on its flat face as shown in
figure. A small object of height \( h \) is
located at a distance \( 2 R \) from the
surface of hemisphere as shown in figure. The final image will form.
A. At a distance of \( R \) from silvered surface, on the right side
B. On the object itself
C. At hemisphere surface
D. At a distance of \( 2 R \) from the silvered surface, on left
side
| 3 |
Physics
|
LPG can be used as a power source for:
A. combined heat and power technologies (CHP)
B. combined heat and energy technologies ( CHP)
C . combined heat and coal technologies (CHP)
D. heat and power technologies
| 1 |
Chemistry
|
If \( A \) is \( (-1,2,0), B \) is (1,2,3) and \( C \) is \( (4,2,1), \) then prove that \( \Delta A B C \) is an isosceles right triangle.
| 2 |
Maths
|
If certain decomposition reaction found to obey equation in term of partial pressure (P) of reactant : \( \frac{\boldsymbol{a}-\boldsymbol{p}^{2}}{\boldsymbol{p}^{2}}=\boldsymbol{b k t} \)
what is order of reaction if \( a, b \) and \( k \)
are constant (t represents time)?
\( A \cdot 3 \)
B. 6
\( c \cdot 2 \)
\( D \)
| 1 |
Chemistry
|
Any point on the circumference of a
rigid body which is rolling without slipping undergoes :
A. a circular path
B. an elleptic path
c. a cycloid path
D. an parabolic path
| 3 |
Physics
|
Write any two rational numbers which
are between 2.3 and 2.4
| 2 |
Maths
|
'The extent to which a solute is
dissociated or associated can be
expressed by Van 't Hoff factor'. Substantiate the statement.
| 1 |
Chemistry
|
Mark the correct reason/s why
nichrome is used for making heating element of electrical appliances.
A. Nichrome does not oxidize
B. Nichrome doesn't burn easily at high temperatures as it has higher melting and boiling point than metals
C. Nichrome has higher resisistivity and consequently a higher resistance
D. All
| 3 |
Physics
|
If a galvanometer has full scale
deflection current \( I_{G} \) and resistance \( G \)
A shunt resistance \( R_{A} \) is used to
convert it into an ammeter of range \( \boldsymbol{I}_{\mathbf{0}} \)
and a resistance \( R_{V} \) is connected in series to convert it into a voltmeter of
range \( V_{0} \) such that \( V_{0}=I_{0} G \) then
\( R_{A} R_{V} \) and \( \frac{R_{A}}{R_{V}} \) respectively are
\( ^{\mathbf{A}} \cdot G^{2} \) and \( \frac{I_{G}^{2}}{\left(I_{0}-I_{G}\right)^{2}} \)
в. \( G^{2} \) and \( \frac{I_{0}^{2}}{\left(I_{0}-I_{G}\right)^{2}} \)
\( ^{\mathrm{c}} \cdot G^{2} \) and \( \frac{I_{G}}{\left(I_{0}-I_{G}\right)^{2}} \)
D. \( G^{2} \) and \( \frac{I_{G}^{2}}{\left(I_{0}+I_{G}\right)^{2}} \)
| 3 |
Physics
|
f the brass wire were replaced by
another brass wire of diameter 1 m \( m \)
where should the mass be suspended
so that \( A B \) would remain horizontal?
\( \mathbf{A} \cdot x=0.06 m \)
В . \( x=0.12 \) т
c. \( x=0.24 m \)
D. \( x=0.48 m \)
| 3 |
Physics
|
Calculate the number of molecules of
oxygen gas that occupies a volume Of 22
\( \mathrm{ml} \) at \( 273 \mathrm{K} \) and 3 atm pressure.
| 1 |
Chemistry
|
The dimensions of \( \frac{\alpha}{\beta} \) in the equation \( \boldsymbol{F}=\frac{\boldsymbol{\alpha}-\boldsymbol{t}^{2}}{\beta \boldsymbol{v}^{2}}, \) where \( \mathrm{F} \) is the force, \( \mathrm{v} \) is
velocity and t is time, is
A \( \cdot\left[M L T^{-1}\right] \)
В \( \cdot\left[M L^{-1} T^{-2}\right] \)
c. \( \left[M L^{3} T^{-4}\right] \)
D・ \( \left[M L^{2} T^{-4}\right] \)
| 3 |
Physics
|
Which of the following semiconductor is electrically positive?
A. Intrinsic semiconductor
B. P-type semiconductor
c. N-type semiconductor
D. None of these
| 3 |
Physics
|
If \( D \) is a point on the side \( A B \) of \( \triangle A B C \) such that \( A D: D B=3: 2 \) and \( E \) is a point
on BC such that DE \( \| \) AC. Find the ratio of areas of \( \triangle \mathrm{ABC} \) and \( \triangle \mathrm{BDE} \)
| 2 |
Maths
|
At \( 1100^{\circ} \mathrm{C} \), which reaction is
spontaneous to a maximum extent?
A. \( M g O+C \rightarrow M g+C O \)
B. \( Z n O+C \rightarrow Z n+C O \)
c. \( M g O+Z n \rightarrow M g+Z n O \)
D. \( Z n O+M g \rightarrow M g O+Z n \)
| 1 |
Chemistry
|
Discribe about structure of proteins.
| 1 |
Chemistry
|
Select the incorrect statement(s):
A. An activated complex is a high-energy, unstable, short lived configuration of reactant atoms
B. An endothermic reaction always has a greater activation energy and a slower rate than the opposing exothermic reaction
C. Threshold energy level decreases on heating the reaction mixture
D. The geometrical shape and the collision geometry of reacting molecules affects reaction rate
| 1 |
Chemistry
|
Liquid oxygen remains suspended between two pole forces of a magnet because it is:
A. diamagnetic
B. paramagnetic
c. ferromagnetic
D. antiferromagnetic
| 3 |
Physics
|
The number of chromosomes in parents
and offsprings of a particular species remains constant due to
A. Doubling of chromosomes after zygote formation
B. Halving of chromosomes during gamete formation
c. Doubling of chromosomes after gamete formation
D. Halving of chromosomes after gamete formation
| 0 |
Biology
|
Show that the maximum volume of the
cylinder which can be inscribed in a sphere of radius \( 5 \sqrt{3} \mathrm{cm} \) is \( 500 \pi c m^{3} ? \)
| 2 |
Maths
|
Let \( M \) and \( m \) be respectively the
absolute maximum and the absolute
minimum values of the function,
\( f(x)=2 x^{3}-9 x^{2}+12 x+5 \) in the
interval \( [0,3] . \) Then \( M-m \) is equal to.
A . 1
B. 5
\( c \cdot 4 \)
D. 9
| 2 |
Maths
|
The \( n^{t h} \) term of an \( A P \) is \( a=2=n+1 \)
find its sum.
| 2 |
Maths
|
\( P\left(A / B^{\prime}\right) \) is defined only when
\( A \cdot B \) is not a sure event
B. \( B \) is a sure event
c. \( B \) is an impossible event
D. \( B \) is not an impossible event
| 2 |
Maths
|
toppr
Q Type your question.
rumu ac shape ACB such that \( d<<l \). The
tension in the string is \( \mathrm{T} \) and the strain
produced in it is \( \varepsilon . \) If the Youngs modulus of the material of wire is \( Y \).
Then
This question has multiple correct options
A \( \cdot_{\varepsilon}=\frac{d}{2 l} \)
B. \( _{\varepsilon}=\frac{d^{2}}{2 l^{2}} \)
c. \( T=a Y\left(\frac{d}{2 l}\right) \)
D. \( T=a Y\left(\frac{d^{2}}{2 l^{2}}\right) \)
| 3 |
Physics
|
PUC certificate stands for
A. Pollution Under Control Certificate
B. Population Under Control Certificate
C. Population Under Coordinate Certificate
D. All of the above
| 0 |
Biology
|
A film of water is formed between two
straight parallel wires of length \( 10 \mathrm{cm} \)
each separated by \( 0.5 \mathrm{cm} \). If their separation is increased by \( 1 m m \) while still maintaining their parallelism how much work will have to be done of
water (Surface tension of water \( = \)
\( \left.7.2 \times 10^{-2} N / m\right) \)
A \( \cdot 7.22 \times 10^{-6} \mathrm{J} \)
В. \( 1.44 \times 10^{-5} \mathrm{J} \)
c. \( 2.88 \times 10^{-5} \mathrm{J} \)
D. \( 5.76 \times 10^{-5} J \)
| 3 |
Physics
|
\( 3.24636363 \ldots \) is
A. An integer
B. An irrational number
C. A rational number
D. Not a real number
| 2 |
Maths
|
Calculate the degree of ionization and \( \left[\boldsymbol{H}_{3} \boldsymbol{O}^{+}\right] \) of \( \mathbf{0 . 0 1} \boldsymbol{M} \boldsymbol{C H}_{3} \boldsymbol{C O O H} \)
solution. The equilibrium constant of acetic acid is \( 1.8 \times 10^{-5} \)
| 1 |
Chemistry
|
Evaluate: \( 96 a b c(3 a-12)(5 b-30) \div \)
\( \mathbf{1 4 4}(\boldsymbol{a}-\mathbf{4})(\boldsymbol{b}-\mathbf{6}) \)
\( \mathbf{A} \cdot 10 a b c \)
B. 2abc
\( c \cdot 2 a b \)
D. \( 2 b c \)
| 2 |
Maths
|
The F-Xe-F bond angle in \( \boldsymbol{X} \boldsymbol{e} \boldsymbol{F}_{4} \) is:
\( \mathbf{A} \cdot 109^{\circ} \)
B. \( 103^{\circ} \)
\( c .90^{\circ} \)
D. \( 60^{\circ} \)
| 1 |
Chemistry
|
The perimeter of a rhombus is \( 100 \mathrm{cm} \) and one of the diagonals is \( 40 \mathrm{cm} \) Then the area of the rhombus is
A. \( 1000 \mathrm{cm}^{2} \)
В. \( 500 \mathrm{cm}^{2} \)
c. \( 1200 \mathrm{cm}^{2} \)
D. \( 600 \mathrm{cm}^{2} \)
| 2 |
Maths
|
The cell functionally associated with sieve tube is
A. Phloem fibres
B. Phloem parenchyma
c. companion cell
D. collenchyma
| 0 |
Biology
|
Adrenaline is equivalent to which neurotransmitter?
\( A \cdot \) GABA
B. Serotonin
c. Epinephrine
D. None of the abaov
| 0 |
Biology
|
If \( e \) and \( e^{\prime} \) be the eccentricities of two
conics \( S=0 \) and \( S^{\prime}=0 \) and if \( e^{2}+ \)
\( e^{\prime 2}=3, \) then both \( S \) and \( S^{\prime} \) can be
A. hyperbolas
B. ellipses
c. parabolas
D. none of these
| 2 |
Maths
|
(a) Give two differences between Ideal
and non-Ideal solutions.
(b) Find out osmotic pressure of Glucose solutions of \( 5 \% \) solution at
\( 25^{\circ} \mathrm{C} \) temperature while molecular
mass of Glucose 180 and \( R=0.0821 \)
Litre Atmosphere.
| 1 |
Chemistry
|
A woolen cloth when rubbed against
plastic object acquires
charge.
A. Sometimes positive and sometimes negative
B. Negative
c. Positive
D. None of the these
| 3 |
Physics
|
\( f\left(\begin{array}{ccc}2 & -1 & 3 \\ -5 & 3 & 1 \\ -3 & 2 & 3\end{array}\right], \) then
\( A .(A d j A)= \)
A \( \cdot\left(A d j \cdot A^{T}\right) \)
B. \( (\text {Adj.A}) . A \)
c. \( |A| . A \)
D. None of these
| 2 |
Maths
|
A rectangular tank containing water is \( 5 \mathrm{m} \) long, \( 3 \mathrm{m} \) broad and \( 2 \mathrm{m} \) deep. Find how much the water will rise, if a block
of lead \( 1 \mathrm{m} \times 45 \mathrm{cm} \times 30 \mathrm{cm} \) is put in the
tank?
A. \( 9 \mathrm{cm} \)
B. \( 90 \mathrm{cm} \)
\( \mathrm{c} .9 \mathrm{mm} \)
D. 9 m
| 2 |
Maths
|
The IUPAC name of:
A. 3,4 -dimethylpentanoyl chloride
B. 1 -chloro-1-oxo- 2,3 -dimethylpentane
C. 2 -ethyl-3-methylbutanoyl chloride
D. 2,3 -dimethylpentanoyl chloride
| 1 |
Chemistry
|
Match the column I with column II and
select the correct option
colun column 1 1
(i)
Central National
Herbarium
(ii)
Royal Botanical
Garden \( \quad(\mathrm{q}) \quad \) Delhi
(iii) National Museum
of National History (r) Kolkata
(iv) Rajiv Gandhi
Zoological Park (s) Pune
A. (a) (i)-(r), (ii)-(s), (iii)-(p), (iv)-(q)
B. (b) (i)-(r), (ii)-(p), (iii)-(q), (iv)-(s)
C. (c) (i)-(p), (ii)-(s), (iii)-(q), (iv)-(r)
D. (d) (i)-(q), (ii)-(r), (iii)-(p), (iv)-(s)
| 0 |
Biology
|
Find the area of the region in the first quadrant enclosed by x-axis, the line \( x=\sqrt{3} y \) and the circle \( x^{2}+y^{2}=4 \)
| 2 |
Maths
|
iso-butylene when subjected to hydroboration oxidation reaction,
yields:
A. iso-butyl alcohol
B. sec-butyl alcohol
c. n-butyl alcohol
D. tert-butyl alcohol
| 1 |
Chemistry
|
Which of the following is not an ambident nucleophile?
\( \mathbf{A} \cdot O H^{-} \)
B. \( N O_{2}^{-} \)
c. \( C N^{-} \)
D. \( S C N^{-} \)
| 1 |
Chemistry
|
n figure OPQR is a rhombus, three of whose vertices lie on the circle with
centre \( 0 . \) If the area of rhombus is 32
\( \sqrt{3} \mathrm{cm}^{2}, \) find the radius of the circle.
\( 4.6 \mathrm{cm} \)
B. 2 cm
\( c .4 \mathrm{cm} \)
\( D \)
| 2 |
Maths
|
At absolute zero temperature:
A. only para hydrogen exists
B. only ortho hydrogen exists
C. both para and ortho hydrogen exist
D. none of these
| 1 |
Chemistry
|
A lawn roller in the form of a thin-walled
hollow cylinder of mass \( M \) is pulled horizontally with a constant horizontal
force \( \boldsymbol{F} \) applied by a handle attached to
the axle. Ifit rolls without slipping, find the acceleration and the friction force.
| 3 |
Physics
|
Na and Al are the examples of two metals which are manufactured by the electrolysis of their fused salts.
If true enter 1 , else enter 0 .
| 1 |
Chemistry
|
Five moles of Hydrogen initially at STP is compressed adiabatically so that its temperature becomes 673 K. The
increase in internal energy of the gas, in
\( \boldsymbol{k} \boldsymbol{J} \) is:
\( [R=8.3 J / m o l e-K ; \gamma=1.4 \) for
diatomic gas
A . 80.5
B. 21.55
c. 41.50
D. 65.55
| 1 |
Chemistry
|
Find the values of \( x \) for which \( \left|\begin{array}{ll}3 & x \\ x & 1\end{array}\right|= \) \( \left|\begin{array}{ll}\mathbf{3} & \mathbf{2} \\ \mathbf{4} & \mathbf{1}\end{array}\right| \)
| 2 |
Maths
|
The hormone involved in the active
water reabsorption in renal tubules
A. Anti-diuretic hormone
B. Vasopressin
c. Both A and B
D. Adrenaline
| 0 |
Biology
|
Prove that the eccentricity of the conic given by the general equation satisfies the relation \( \frac{e^{4}}{1-e^{2}}+4= \)
\( \frac{(a+b-2 h \cos \omega)^{2}}{\left(a b-h^{2}\right) \sin ^{2} \omega}, \) where \( \omega \) is the
angle between the axes.
| 2 |
Maths
|
The delay in recovery on removal of the
deforming force is called
| 3 |
Physics
|
Which of the following gases is used as preservative injuice of fruits \( \& \) jams?
| 1 |
Chemistry
|
Force that enable us to perform all activities like movement or bending of the body is
A . Gravitational force
B. Frictional force
c. Muscular force
D. Magnetic force
| 3 |
Physics
|
In the electrochemical cell shown above,
which of the following half-reactions
occurs at the anode?
\( \mathbf{A} \cdot C u^{2+}+e \rightarrow C u^{-} \)
B \( \cdot Z n(s) \rightarrow Z n^{2+}+2 e \)
\( \mathbf{c} \cdot Z n^{2+}+2 e \rightarrow Z n(s) \)
\( \mathbf{D} \cdot C u(s) \rightarrow C u^{2+}+2 e \)
E \( \cdot C u^{2+}+2 e \rightarrow C u(s) \)
| 1 |
Chemistry
|
\( \triangle A B C \sim \triangle D E F \) and their perimeters
are \( 32 \mathrm{cm} \) and \( 24 \mathrm{cm} \) respectively. If
\( A B=10 \mathrm{cm}, \) Find \( D E \)
| 2 |
Maths
|
Let \( \boldsymbol{\alpha}, \boldsymbol{\beta}, \boldsymbol{\gamma}, \boldsymbol{a}, \boldsymbol{b}, \boldsymbol{c}, \boldsymbol{x} \boldsymbol{\epsilon} \boldsymbol{R} \) and let
\( \Delta= \)
\( \left|\begin{array}{ccc}\sin (x+\alpha) & \cos (x+\alpha) & a+x \sin \alpha \\ \sin (x+\beta) & \cos (x+\beta) & b+x \sin \beta \\ \sin (x+\gamma) & \cos (x+\gamma) & c+x \sin \gamma\end{array}\right| \)
then \( \Delta \) is
This question has multiple correct options
A. independent of \( x \)
B. dependent of \( \alpha, \beta, \),
c. dependent on \( a, b, c, c \)
D. \( a \) constant
| 2 |
Maths
|
How many significant figures will be there in the calculated solution of
following problem:
\( \frac{(29.2-20.2) \times\left(1.97 \times 10^{5}\right)}{1.39} ? \)
A. 3
B.
\( c \cdot 4 \)
D.
| 1 |
Chemistry
|
Animal dung contains:
A. Phosphorus
B. Nitrogen
c. sulphur
D. A and
| 3 |
Physics
|
Two particles \( A \) and \( B \) are placed as
shown in figure. The particle A on the
top of a tower of height H is projected horizontally with a velocity u and the particle B is projected along the horizontal surface towards the foot of
the tower, simultaneously. When particle A reaches at ground, it simultaneously hits particle B. Then the speed of projected particle B is:(neglect any type of friction)
A \( \cdot d \sqrt{\frac{g}{2 H}} \)
B. \( d \sqrt{\frac{g}{2 H}}-u \)
\( c \)
\[
\sqrt[d]{\frac{g}{2 H}+u}
\]
D.
| 3 |
Physics
|
In the given figure, \( A D=B C, A C= \)
BD. Then \( \triangle P A B \) is
A . equilateral
B. right angled
\( c . \) scalene
D. isosceles
| 2 |
Maths
|
The displacement-time graph of a
particle executing SHM is shown in the
figure. Then
This question has multiple correct options
A. the velocity is maximum at \( t=T / 2 \)
B. the acceleration is maximum at \( t=T \)
C. the force is zero at \( t=3 T / 4 \)
D. the potential energy equals the oscillation at t=T/2
| 3 |
Physics
|
Sound waves do not travel through:
A. solids
B. liquids
c. gases
D. vacuum
| 3 |
Physics
|
Novolac is:
A. a linear condensation product of phenol and formaldehyde
B. a cross linked condensation product of urea and formaldehyde
C . a cross linked condensation product of phenol and formaldehyde
D. a linear condensation product of urea and formaldehyde
| 1 |
Chemistry
|
Find the derivative of the following function at the indicated points. \( 2 \cos x \) at \( x=\frac{\pi}{2} \)
| 2 |
Maths
|
If a botanist want to study nomenclature of a similar species, the scientist will study
A. Syntype
B. Isotype
c. Neotype
D. Mesotype
| 0 |
Biology
|
Solve for \( \boldsymbol{x} \)
\( 2 \tan ^{-1} \frac{2 x}{1-x^{2}}=\pi \)
| 2 |
Maths
|
The diagram shown above represents the applied force per unit area with the
corresponding change \( \boldsymbol{X} \) (per unit length) produced in a thin wire of uniform cross-section in the curve
shown. The region in which the wire behaves like a liquid is :
\( A \cdot a \)
в. \( b c \)
\( c \cdot c d \)
D. \( O a \)
| 3 |
Physics
|
What kind of eclipse do we see when the moon is entirely within the Earth's umbral shadow?
A. Partial lunar
B. Total solar
c. Total lunar
D. Partial solar
| 3 |
Physics
|
Which one of the following features is shared by algae and fungi?
A. Autotrophism
B. Parenchymatous thallus
c. Embryo absent in life cycle
D. Reserve food matter in starch
| 0 |
Biology
|
The presence of carbon in an organic
compound is detected by heating it
with :
A. sodium metal to convert it to \( N a C N \)
B. \( C a O \) to convert it into \( C O \) which burns with a blue flame
c. \( C u O \) to convert it into \( C O_{2} \) which turns lime water milky
D. \( C u \) wire to give a bluish-green flame
| 1 |
Chemistry
|
Find the general solution of the
equation \( \sin 2 x+\sin 4 x+\sin 6 x=0 \)
| 2 |
Maths
|
mole of an ideal gas is subjected to a
reversible process as shown in the
figure. Calculate the work done (in
joule) in this process. \( [\ln 2=0.7] \)
A. 0.5 Joule
B. 6 Joule
c. 8 Joule
D. 0.8 Joule
| 1 |
Chemistry
|
How are the two atoms \( _{92}^{235} P \) and \( _{92}^{238} P \) similar?
(i) They have the same number of
protons
(ii) They have the same number of
neutrons
(iii) They have the same number of
electrons
A. Only (i)
B. Only (i) and (ii)
c. only (i) and (iii)
D. (i), (ii) and (iii)
| 1 |
Chemistry
|
\( \frac{\sigma}{\sigma} \)
\( \frac{\sigma}{\sigma} \)
\( \sigma \)
| 1 |
Chemistry
|
\( 1.5 \mathrm{g} \mathrm{Cd} \mathrm{Cl}_{2} \) was found to contain \( 0.9 \mathrm{g} \)
Cd. Calculate MO, atomic weight of Cd.
A . 118
B. 112
c. 106.5
D. 53.25
| 1 |
Chemistry
|
Name the property under multiplication used in each of the following. \( \frac{-19}{29} \times \frac{29}{-19}=1 \)
| 2 |
Maths
|
List two essential roles of ribosome
during translation.
| 0 |
Biology
|
Secondary cortex is derived from?
A . Intercalary meristem
B. Protoderm
c. Procambium
D. Phelloderm
| 0 |
Biology
|
Boyle's law holds good for an ideal gas during:
A. Isobaric changes
B. Isothermal changes
c. Isochoric changes
D. Isotopic changes
| 3 |
Physics
|
\( \mathbf{A} \)
1.00 molal aqueous solution of trichloroacetic acid \( \left(C C l_{3} C O O H\right) \) is heated to its boiling point. The solution
has the boiling point of \( 100.18^{\circ} \mathrm{C} \) Determine the van't Hoff factor for
trichloroacetic acid. \( \left(K_{b} \text { for water }=\right. \)
\( 0.512 \mathrm{K} \mathrm{kg} \mathrm{mol}^{-1} \) )
| 1 |
Chemistry
|
Two concentric hollow spherical shells have radii \( r \) and \( R(R>>r) . \) A charge
\( Q \) is distributed on them such that the
surface charge densities are equal. The electric potential at the centre is:
A \( \cdot \frac{Q(R+r)}{4 \pi \epsilon_{0}\left(R^{2}+r^{2}\right)} \)
B. \( \frac{Q\left(R^{2}+r^{2}\right)}{4 \pi \epsilon_{0}(R+r)} \)
c. \( \frac{Q}{R+r} \)
D.
| 3 |
Physics
|
The phenomenon of production of magnetic field on passing an electric current in a straight conducting wire is based on the law of
A. Faraday
B. Coulomb
c. Ampere
D. oersted
| 3 |
Physics
|
The first ionisation potential of \( \boldsymbol{N}, \boldsymbol{P}, \boldsymbol{O} \) and \( S \) are in the order of
\( \mathbf{A} \cdot S>P<O>N \)
В . \( N>O>P>S \)
c. \( N>O<P>S \)
D. \( N<O<P<S \)
| 1 |
Chemistry
|
Fresh water snakes are commonly
A. Viviparous
B. Less poisonous
c. Deadly poisonous
D. Non-poisonous
| 0 |
Biology
|
Fill in the blanks
\begin{tabular}{lllll}
S. no & cost price & Selling price & Profit & Loss \\
\hline (a) & Rs 1,200 & Rs Rs & Rs \\
(b) & 2,000 & & 800 & 180 \\
(c) & & Rs & Rs & \\
(d) & Rs & 5,100 & 850 & \\
& 10,800 & & Rs & 216
\end{tabular}
| 2 |
Maths
|
The magnet is strongest near the
A. Poles of the magnet
B. Ends of the magnet
C. Centre of the magnet
D. One quarter point from the poles of the magnet
| 3 |
Physics
|
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