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Construct \( \triangle X Y Z \) in which \( X Y= \)
\( 4.5 \mathrm{cm}, Y Z=5 \mathrm{cm} \) and \( Z X=6 \mathrm{cm} \) | 2 | Maths |
Scattering of light by colloidal particles is known as:
A. Tyndall effect
B. Brownian motion
c. Reflection
D. Rectilinear propagation | 1 | Chemistry |
\( 2.66 \mathrm{g} \) chloride of a metal when treated with silver nitrate solution give 2.87 g of silver chloride. 3.37 g of another chloride of the same metal give 5.74 g of silver chloride when treated with silver nitrate
solution. Show that the results are in
agreement with a law of chemica combination. | 1 | Chemistry |
Assertion
The value \( \int_{-4}^{-5} \sin \left(x^{2}-3\right) d x+ \)
\( \int_{-2}^{-1} \sin \left(x^{2}+12 x+33\right) \) is zero
Reason
\( \int_{-a}^{a} f(x) d x=0 \) if \( f(x) \) is an odd function.
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 | 2 | Maths |
If the standard deviation of a population is \( 9, \) the population variance is:
\( \mathbf{A} \cdot \mathbf{9} \)
B. 3
c. 21
D. 81 | 2 | Maths |
\( \lim _{x \rightarrow 0} \frac{(1-\cos 2 x)^{2}}{2 x \tan x-x \tan 2 x} \) is :-
A . -2
B. \( -\frac{1}{2} \)
\( c \cdot \frac{1}{2} \)
D. 2 | 2 | Maths |
A conductor ABOCD moves along its
bisector with a velocity of \( 1 \mathrm{ms}^{-1} \) through a perpendicular magnetic field
of \( 1 \mathrm{Wbm}^{-2} \), as shown in the figure. If all
the four sides are of \( 1 \mathrm{m} \) length each,
then the induced emf between point \( A \)
and D is :
A. zero
в. 1.41
\( c \cdot 0.71 v \)
D. none of the above | 3 | Physics |
Discuss the nature of bonding in the following coordination entities on the basis of valence bond theory:
(i) \( \left[\boldsymbol{F} \boldsymbol{e}(\boldsymbol{C} \boldsymbol{N})_{\mathbf{6}}\right]^{4-}\left(\text { ii) }\left[\boldsymbol{F} \boldsymbol{e} \boldsymbol{F}_{6}\right]^{3-}(\text { iii })\right. \)
\( \left[\boldsymbol{C o}\left(\boldsymbol{C}_{2} \boldsymbol{O}_{4}\right)_{3}\right]^{3-}(\text { iv })\left[\boldsymbol{C o} \boldsymbol{F}_{6}\right]^{3-} \) | 1 | Chemistry |
What is the standard reduction
potential \( \left(\boldsymbol{E}^{o}\right) \) for \( \boldsymbol{F} \boldsymbol{e}^{\mathbf{3}+} \rightarrow \boldsymbol{F} \boldsymbol{e} \)
Given that:
\( \boldsymbol{F} \boldsymbol{e}^{2+}+\boldsymbol{2} \boldsymbol{e} \boldsymbol{6}-\rightarrow \boldsymbol{F} \boldsymbol{e} ; \boldsymbol{E}_{\boldsymbol{F}}^{o} \boldsymbol{e}_{\boldsymbol{F} e^{2+} / \boldsymbol{F} e}= \)
\( -0.47 V \)
\( \boldsymbol{F} \boldsymbol{e}^{\boldsymbol{3}+}+\boldsymbol{e}^{-} \rightarrow \boldsymbol{F} \boldsymbol{e}^{2+} ; \boldsymbol{E}_{\boldsymbol{F} e^{3+} / \boldsymbol{F} e^{2+}}^{o}= \)
\( +0.77 V \)
A \( .+0.057 V \)
в. \( +0.30 V \)
c. \( -0.30 V \)
D. \( -0.057 V \) | 1 | Chemistry |
Which of the following quantities:(1) magnetic declination (II) dip is used to determine the strength of earths magnetic field at a point on the earths
surface
\( A \). Both \( 1 \& \| \)
B. Neither I nor II
c. I only
D. II Only | 3 | Physics |
Oxygen is prepared by:
A. potassium chlorate
B. potassium perchlorate
c. hydrogen peroxide
D. both \( A \) and \( c \) | 1 | Chemistry |
Which of the following transitions will involve maximum amount of energy?
A \( . M \rightarrow M^{+}+e^{-} \)
B. \( M^{-} \rightarrow M^{+}+2 e^{-} \)
\( \mathbf{c} \cdot M^{2+} \rightarrow M^{3+}+e^{-} \)
D. \( M^{+} \rightarrow M^{2+}+e^{-} \) | 1 | Chemistry |
The following reaction is probably:
\( \mathbf{2} \boldsymbol{C} \boldsymbol{H}_{3} \boldsymbol{C} \boldsymbol{H}_{2} \boldsymbol{C} \boldsymbol{H}_{2} \boldsymbol{C} \boldsymbol{H}_{2} \boldsymbol{O} \boldsymbol{H} \frac{\boldsymbol{H}_{2} \boldsymbol{S} \boldsymbol{O}_{4}}{\boldsymbol{H} e a t} \)
\( \left(\boldsymbol{C} \boldsymbol{H}_{3} \boldsymbol{C H}_{2} \boldsymbol{C H}_{2} \boldsymbol{C H}_{2}\right)_{2} \boldsymbol{O}+\boldsymbol{H}_{2} \boldsymbol{O} \)
A . an \( E 2 \) -type reaction involving the protonated alcohol as the substrate
B. an \( S_{N} 1 \) type reaction involving the protonated alcohol as the substrate
c. an \( E 1 \) type reaction involving the protonated alcohol as the substrate
D. an \( S_{N} 2 \) type reaction involving the protonated alcohol as the substrate | 1 | Chemistry |
The length of a conductor is halved. Its conductance will be?
A. Halvedd
B. Unchanged
c. Doubled
D. Quadrupled | 3 | Physics |
Universe comprises of :
A. Only System
B. Only Surroundings
C. Both System and Surroundings
D. None of the above | 3 | Physics |
Bulb is a modified
A . Leaf
B. Shoot
\( c . \) Root
D. Flower | 0 | Biology |
Assertion
The rotation of earth on its axis is an
example of gyroscopic precession
Reason
The axis of the earth is tilted and its
mass is huge.
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 |
The important conclusions on the
formation of trihalomethanes are which
of the following?
A. Chlorination of natural waters causes the formation of chloroform and other trihalomethanes because of the
reaction of \( O C l^{-} \) on DOC present in the water
B. Use of both ammonia and chlorine in water treatment
has reduced the level of the trihalomethanes due to
the formation of the chloroamines, which react more slowly than free chlorine
C. Finally, the concentration of the trihalomethanes above \( 100 \mu \) g/l are considered unsafe for drinking water
D. All of the above | 1 | Chemistry |
A long coaxial cable consists of two thin-walled conducting cylinders with
inner radius \( 2 c m \) and outer radius \( 8 c m \)
The inner cylinder carries a steady current \( 0.1 A \), and the outer cylinder
provides the return path for that current. The current produces a magnetic field between the two cylinders. Find the energy stored in the
magnetic field for length \( 5 m \) of the
cable. Express answer in \( n J \) (use
\( \ln 2=0.7) \) | 3 | Physics |
The atomic weight of Ne is 20.2. Ne is mixture of \( N e^{20} \) and \( N e^{22} . \) The relative
abundance of the heavier isotope is:
A . \( 90 \% \)
B. 20\%
c. \( 40 \% \)
D. \( 10 \% \) | 1 | Chemistry |
Write \( I U P A C \) names of the following compound: | 1 | Chemistry |
Which triad belongs to the same group and same period?
A. \( C u, A g, A u \)
в. \( F e, C o, N i \)
c. \( Z n, C d, H g \)
D. None of these | 1 | Chemistry |
If \( \Delta G \) standard is zero, this means:
A. the reaction is spontaneous at standard conditions
B. the reaction is non spontaneous at standard conditions
C. the system is at equilibrium at standard conditions
D. the reaction is both non spontaneous and at equilibrium
E. the reaction is both spontaneous and at equilibrium | 1 | Chemistry |
The IUPAC name of \( \boldsymbol{C H}_{\mathbf{3}}-\boldsymbol{O}- \)
\( \boldsymbol{C H}\left(\boldsymbol{C H}_{3}\right)-\boldsymbol{C H}_{3} \) is: | 1 | Chemistry |
State work energy theorem. | 3 | Physics |
Eight chairs are numbered 1 to
8. Two
women and three men wish to occupy one chair each. First, the women choose
the chairs amongst the chairs marked 1
to 4 then the men select the chairs
amongst the remaining. The number of
possible arrangements are: | 2 | Maths |
If the angle of incidence is \( 80^{\circ}, \) what will be the angle of reflection with respect to the normal drawn perpendicular at the point of reflection?
A . \( 80^{\circ} \)
B. \( 100^{\circ} \)
\( c \cdot 160^{\circ} \)
D. \( 20^{\circ} \) | 3 | Physics |
Among the following compounds, the most acidic is:
A. p-nitrophenol
B. p-hydroxybenzoic acid
c. o-hydroxybenzoic acid
D. none | 1 | Chemistry |
Formula of feldspar is:
A. \( K_{2} O . A l_{2} O_{3} .6 S i O_{2} \)
B. \( K_{2} O_{3} . A l_{2} O_{3} .6 s i_{2} O_{2} .2 H_{2} O \)
c. \( A l_{2} O_{3} .2 S i O_{2} .2 H_{2} O \)
D. \( 3 M g O .4 S i O_{2} . H_{2} O \) | 1 | Chemistry |
A ball of mass \( 20 g \) hits a wall at an
angle \( 45^{\circ} \) with a velocity of \( 15 m s^{-1} . \) If
the ball rebounds at \( 90^{\circ} \) to the direction
of incidence, calculate the impulse
received by ball. | 3 | Physics |
A bag contain 8 red, 3 white and 9 blue
balls. If three balls are drawn at random,
determine the probability that all the three balls are blue balls
A \( \cdot \frac{7}{93} \)
в. \( \frac{6}{92} \)
c. \( \frac{7}{95} \)
D. \( \frac{8}{95} \) | 2 | Maths |
On the set \( Q \) of all rational numbers, if a
binary operation \( * \) is defined by \( a * b= \) \( \frac{a b}{5} . \) Prove that \( * \) is associative on \( Q \) | 2 | Maths |
There is an electric field \( \overrightarrow{\mathrm{E}}=\frac{a x^{3} \hat{i}+b y^{4} \widehat{j}+c z^{2} \widehat{k}}{a x^{4}+b y^{5}+c z^{3}} \)
at any \( (x, y, z) \) coordinates in the space
except origin, Where a,b \& c are constant.
Find the electrostatic flux passing
through a sphere of radius R whose
center is at the origin.
\( \mathbf{A} \cdot \pi R \)
\( \mathbf{B} \cdot 2 \pi R \)
\( \mathbf{c} .4 \pi R \)
D. Zero | 3 | Physics |
Two candles of the same height are lighted at the same time. The first is
consumed in 4 hours and the second in
3 hours. Assuming that each candle burns at a constant rate, in how many
hours after being lighted was the first candle twice the height of the second?
A \( \cdot \frac{3}{4} \) hr.
B. \( \frac{11}{2} \) hr.
c. \( 2 h r \)
D. \( \frac{12}{5} \) h.
E \( \cdot \frac{21}{2} \) hr. | 2 | Maths |
Construct a triangle \( \boldsymbol{A B C} \), where \( A B=4 c m, B C=5 c m \) and \( \angle A B C= \)
\( 45^{\circ} . \) Also, find the maximum length of
side \( \boldsymbol{A C} \) | 2 | Maths |
The diagram shows part of the curve \( y=\frac{1}{16}(3 x-1)^{2}, \) which touches the \( x \)
axis at the point P. The point \( Q(3,4) \) lies
on the curve and the tangent to the
curve at \( Q \) crosses the \( x \) -axis at \( R \)
State the \( x \) -coordinate of \( P \) | 2 | Maths |
The co-ordination number of a metal in
co-ordination compound is:
A. same as primary valency
B. sum of primary and secondary valences
c. same as secondary valency
D. none of the above | 1 | Chemistry |
Match the column. | 1 | Chemistry |
A 5 digit number divisible by 3 is to be formed using the numerals 0,1,2,3,4
\& 5 without repetition. The total number of ways this can be done is
A . 3125
в. 600
c. 240
D. 216 | 2 | Maths |
For a \( \Delta A B C, A B=4 \mathrm{mm}, B C=5 \)
\( \mathrm{mm} \) and \( \boldsymbol{A C}=\mathbf{6} \) mm. If \( \boldsymbol{\Delta} \boldsymbol{A} \boldsymbol{B} \boldsymbol{C} \cong \)
\( \Delta D E F, \) then \( E F=_{-}- \)
\( \mathbf{A} \cdot 4 \mathrm{mm} \)
B. \( 6 \mathrm{mm} \)
\( c .5 \mathrm{mm} \)
D. cannot be determined | 2 | Maths |
A body of mass \( 6 k g \) is under a force of
\( 6 N \) which causes displacement in it given by \( S=\frac{t^{2}}{4} m \) where 't' is time. The
work done by the force in \( 2 s \) is :
A . \( 12 . J \)
в. \( 9 J \)
\( c .6 J \)
D. \( 3 J \) | 3 | Physics |
dentify the type of reaction indicated by
line \( A \) in the diagram.
A. Uncatalyzed exothermic
B. Catalyzed exothermic
c. Catalyzed endothermic
E. Reversible | 1 | Chemistry |
Evaluate the integral \( \int_{0}^{\pi} \frac{d x}{a+b \cos x} \) where \( a>b \)
A \( \cdot \pi \sqrt{a^{2}-b^{2}} \)
an \( \pi \sqrt{a^{2}-b^{a^{2}}} \)
в. \( \pi a b \)
c. \( \frac{\pi}{\sqrt{a^{2}+b^{2}}} \)
D. \( \frac{\pi}{\sqrt{a^{2}-b^{2}}} \) | 2 | Maths |
f \( \boldsymbol{A}=\left[\begin{array}{ll}\boldsymbol{4} & \boldsymbol{7} \\ \boldsymbol{6} & \boldsymbol{5}\end{array}\right], \) find \( |\boldsymbol{3} \boldsymbol{A}| \) | 2 | Maths |
Divide a line segment of length \( 10 \mathrm{cm} \)
internally in the ratio 3: 2 | 2 | Maths |
Image formed by a plane mirror is:
A. erect, virtual and of same size of the object
B. inverted, real and of smaller size than the object
C. erect, real and of same size as the object
D. inverted, virtual and of smaller size of the object | 3 | Physics |
An iron ball and a wooden ball are
released from a height in vacuum. The speed of the iron ball would be:
A. Same to the speed of the wooden ball
B. More than the speed of the wooden ball
c. Lesser than the speed of the wooden ball
D. None | 3 | Physics |
Which of the follwoing is not used as food preservative?
A. sodium benzoate
B. sodium sulphate
c. salts of sorbic acid
D. acetyl salicylic acid | 1 | Chemistry |
Temporary hardness can be removed by mixing water with slaked lime, this process is known as softening of water
A. True
B. False | 1 | Chemistry |
Which of the following is ferromagnetic.
A. Cu, Ag, Au
B. Fe, Co, Ni
c. \( z n, \) Сd, \( \mathrm{Hg} \)
D. \( \mathrm{Ca}, \mathrm{Sr}, \mathrm{Ba} \) | 1 | Chemistry |
Aluminum (Al) atom has ground-state
electron configuration as:
\( \mathbf{A} \cdot 1 s^{2} 2 s^{2} 2 p^{1} \)
B \( \cdot 1 s^{2} 2 s^{2} 2 p^{6} 3 s^{1} \)
\( \mathbf{C} \cdot 1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{1} \)
D. \( 1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{1} 3 p^{12} \)
E \( \cdot 1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{1} 3 p^{12} 4 p^{6} \) | 1 | Chemistry |
Which of the followoing oxoanions contain \( S-S \) bond?
This question has multiple correct options
\( A \cdot S_{2} O_{3}^{2-} \)
B. \( S_{2} O_{4}^{2-} \)
\( \mathrm{c} \cdot S_{2} \mathrm{O}_{6}^{2-} \)
D. \( S_{2} O_{7}^{2} \) | 1 | Chemistry |
Which of the following is true about
Mendeleev's periodic table?
A. The accommodation of the noble gases in the periodic table did not disturb the position of other elements
B. Noble gases were known at the time when Mendeleev gave the periodic table
C. When noble gases were discovered, they got a place in Mendeleev's periodic table as a separate row
D. All of the above | 1 | Chemistry |
The rate constant of a zero order
reaction is 0.2 mol \( d m^{-3} h^{-1} . \) If the
concentration of the reactant after 30
minutes is 0.5 mol \( d m^{-3} . \) Then its initial concentration would be :-
A. \( 0.60 \mathrm{mol} \) d \( m^{-3} \)
B. 0.15 moldm \( ^{-3} \)
c. 0.25 mol \( d m^{-3} \)
D. 4.00 mol \( d m^{-3} \) | 1 | Chemistry |
Find the distance of point (1,-2,3)
from the plane \( \boldsymbol{x}-\boldsymbol{y}+\boldsymbol{z}=\mathbf{5} \)
measured parallel to the line whose direction cosines are
proportional to 2,3,-6 | 2 | Maths |
If \( X, F \) and \( U \) respectively denotes displacement, force acting on a particle and potential energy of a particle, then:
A \( . U=F \)
B. \( F=+\frac{d U}{d x} \)
c. \( F=-\frac{d U}{d x} \)
D. \( F=\frac{1}{x}\left(\frac{d U}{d x}\right) \) | 3 | Physics |
Draw a lake showing different zones.
Why are they called so? | 0 | Biology |
5000
\( \frac{\frac{m}{m}}{\frac{m}{m}} \) | 1 | Chemistry |
Mark the correct alternative of the
following. If the measures of the angles of a
triangle are \( (2 x)^{o},(3 x-5)^{o} \) and \( (4 x- \)
13) \( ^{\circ} . \) Then the value of \( x \) is?
A . 22
B . 18
c. 20
D. 30 | 2 | Maths |
Which of the following is the parent element of the element \( \frac{102}{20} \Omega \) if it is
formed as a result of \( 3 \alpha \) and \( 2 \beta^{-} \)
decays?
A \( \cdot \frac{90}{16} \Gamma \)
B . \( \frac{114}{24} \Phi \)
\( \mathrm{c} \cdot_{28}^{114} \mathrm{\Theta} \)
D. \( _{8}^{12} \Delta+_{12}^{90} \Xi \) | 1 | Chemistry |
When mercury is reacted with hot and
conc. sulphuric acid, the gas evolved is:
A \( . H_{2} \)
в. \( S O_{2} \)
\( c \cdot S O_{3} \)
D. \( O_{2} \) | 1 | Chemistry |
In Funaria
A. Male and female reproductive organs are on different plants
B. Male and female reproductive organs are on the same plane but on different branches
C. Male and female reproductive organs are on the same plant and on the same branch
D. None of the above | 0 | Biology |
Simplify:
\( (p q-q r+p r)(p q+q r)-(p r+ \)
\( \boldsymbol{p q}(\boldsymbol{p}+\boldsymbol{q}-\boldsymbol{r}) \) | 2 | Maths |
Lanthanides are also known as:
A. Transition elements
B. Rare gases
c. coinage metals
D. Rare earths | 1 | Chemistry |
Two simple harmonic motions are
represented by the equations. \( \boldsymbol{y}_{1}=\mathbf{1 0} \sin \frac{\boldsymbol{\pi}}{\boldsymbol{4}}(1 \mathbf{2} \boldsymbol{t}+\mathbf{1}), \boldsymbol{y}_{2}= \)
\( \mathbf{5}(((\sin 3 p t+\sqrt{3} \cos 3 p t) \)
The ratio of their amplitudes is
A . 1: 1
B. 1: 2
c. 3: 2
D. 2: 3 | 3 | Physics |
If \( f(x)=\left|\begin{array}{ccc}a & -1 & 0 \\ a x & a & -1 \\ a x^{2} & a x & a\end{array}\right|, \) by using
properties of determinants, find the
value \( \boldsymbol{f}(\mathbf{2 x})-\boldsymbol{f}(\boldsymbol{x}) \) | 2 | Maths |
A force \( F=-6 x^{3} \) is acting on a block
moving along x-axis. Work done by this
force is:
This question has multiple correct options
A. Positive in displacing the block from \( x=3 \) to \( x=1 \)
B. Positive in displacing the block from \( x=-3 \) to \( x=-1 \)
c. Negative in displacing the block from \( x=0 \) to \( x=4 \)
D. zero in displacing the block from \( x=-2 \) to \( x=+2 \) | 3 | Physics |
Is the following equation a quadratic equation? \( (x+2)^{3}=x^{3}-4 \)
A. Yes
B. No
c. Ambiguous
D. Data insufficient | 2 | Maths |
If a conductor has a potential \( V \neq 0 \)
and there are no charges anywhere else outside, then
A. there must be charges on the surface or inside itself
B. there cannot be any charge in the body of the conductor
c. there must be charges only on the surface
D. there must be charges inside the surface | 3 | Physics |
Two bodies of unequal masses possess
the same momentum. Which of the
following can be concluded?
A. Heavier mass possesses lesser K.
B. The masses of the two bodies are in the direct ratio of their velocities
c. Lighter mass possesses less K.E.
D. Both (A) and (B) | 3 | Physics |
Primary battery is a battery:
A. which can be recharged.
B. which cannot be reconditioned by replacing chemical.
c. which cannot be reused.
D. which cannot be recharged. | 1 | Chemistry |
State brewsters law.
The value of brewster's angle for a transparent medium is different for
light of different colours. give reason? | 3 | Physics |
The Henry's law constant for the
solubility of \( \mathrm{N}_{2} \) gas in water at \( 298 \mathrm{K} \) is
\( 1.0 \times 10^{5} \) atm. The mole fraction of \( \mathrm{N}_{2} \)
in air is \( 0.8 . \) The number of moles of \( \mathrm{N}_{2} \)
from air dissolved in 10 moles of water
at \( 298 \mathrm{K} \) and 5 atm pressure is?
A \( \cdot 4.0 \times 10^{-4} \)
B . \( 4.0 \times 10^{-5} \)
c. \( 5.0 \times 10^{-4} \)
D. \( 4.0 \times 10^{-6} \) | 1 | Chemistry |
Let \( a_{n} \) be the nth term of the G.P. of positive numbers. Let \( \sum_{n=1}^{100} a_{2 n}=\alpha \) and \( \sum_{n=1}^{100} a_{2 n-1}=\beta, \) such that \( \alpha \neq \beta . \) Prove
that the common ratio of the G.P. is \( \frac{\boldsymbol{\alpha}}{\boldsymbol{\beta}} \) | 2 | Maths |
The critical points of the function \( f(x)=(x-2)^{2 / 3}(2 x+1) \) are
A. 1 and 2
B. 1 and \( -\frac{1}{2} \)
c. -1 and 2
\( D \) | 2 | Maths |
Which one of the following methods is used to measure distance of a planet or
a star from the earth?
A. Echo method
B. Parallax method
c. Triangulation method
D. None of these | 3 | Physics |
The average binding energy per nucleon is maximum for the nucleus:
\( \mathbf{A} \cdot_{2} H e^{4} \)
B \( \cdot_{8} O^{16} \)
\( \mathbf{c} \cdot_{26} F e^{56} \)
D・ \( _{92} U^{238} \) | 1 | Chemistry |
In the equation \( x+y=4, \) what is the
value of \( x \) if \( y=2 ? \)
\( A \cdot 2 \)
B. 4
\( c \cdot 6 \)
D. | 2 | Maths |
What is Zeise's Salt and Ferrocene?
Explain with structure? | 1 | Chemistry |
A ball is dropped into coaltar. Its
velocity-time curve will be
\( A \)
\( B \)
\( \mathbf{c} \)
D. | 3 | Physics |
Which of the following statement(s)
is/are correct?
\( \mathbf{A} \cdot \operatorname{In}\left[\operatorname{CoBr} C l(e n)_{2}\right]^{+} \) geometrical isomerism exists,
while optical isomerism does not exist
B. Potassium aquadicyanosuperoxoperoxochromate(III) is IUPAC name of \( K_{2}\left[\mathrm{Cr}(\mathrm{CN})_{2} \mathrm{O}_{2}\left(\mathrm{O}_{2}\right)\left(\mathrm{H}_{2} \mathrm{O}\right)\right] \)
C. There are 3 geometrical and 15 stereisomers possible for \( \left[P t\left(N O_{2}\right)\left(N H_{3}\right)\left(N H_{2} O H\right)(p y)\right]^{+} \) and
\( \left[P t B r C l I\left(N O_{2}\right)\left(N H_{3}\right)(p y)\right] \) respectively
D. \( A \) cis and trans forms are not diastereomers to each
other | 1 | Chemistry |
The temperature of a one mole of diatomic gas changes from \( 4 \mathrm{T} \) to \( \mathrm{T} \) in adiabatic process. If \( R \) is universal gas constant. Then work done
A \( \cdot \frac{15 R T}{3} \)
в. \( \frac{15 R T}{2} \)
c. \( \frac{3 R T}{15} \)
D. \( \frac{12 R T}{5} \) | 3 | Physics |
Select the correct statement(s) about
above reaction:
This question has multiple correct options
A. The product is a racemic mixture.
B. Racemisation occurs due to enolisation
C. The reaction passes through a cyclic transition state
D. The intermediate of the reaction is a carbanion. | 1 | Chemistry |
Assertion
In a woman after hysterectomy, the
ovarian cycle is stopped
Reason
Because \( F S H \) is not secreted.
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 |
The sum of first \( p \) terms of an A.P. is
equal to the sum of the first \( q \) terms,
then find the sum of the first \( (p+q) \)
terms. | 2 | Maths |
\( N F_{3} \) is stable. But, \( N C l_{3} \) is explosive.
Identify the reason:
A. \( N C l_{3} \) undergoes hydrolysis whereas \( N F_{3} \) does not.
B . \( N C l_{3} \) decomposes on heating and \( N F_{3} \) does not
c. \( N C l_{3} \) is a gaseous substance and \( N F_{3} \) is liquid
D. \( N C l_{3} \) undergoes sublimation while \( N F_{3} \) does not | 1 | Chemistry |
Fe is made passive by:
A \( \cdot d i l . H_{2} S O_{4} \)
в. dil. \( H C l \)
c. \( a q u a-r e \)eja \( a \)
D. conc.H\( _{2} \) SO \( _{4} \), | 1 | Chemistry |
Explain the steps involved in the formation of root module. | 0 | Biology |
The unit of rate constant for zero order
reaction is:
A \( \cdot s^{-1} \)
B \( \cdot \operatorname{mol} L^{-1} s^{-1} \)
c. \( L m o l^{-1} s^{-1} \)
D. \( L^{2} m o l^{-2} s^{-1} \) | 1 | Chemistry |
Sulphide ores of metals are usually concentrated by froth floatation process. Which one of the following sulphide ores offers an exception and is concentrated by chemical leaching?
A. Galena
B. Copper pyritee
c. sphalerite
D. Argentite | 1 | Chemistry |
A body of mass \( 1.5 \mathrm{kg} \) is allowed to slide down along a quadrant of a circle from the horizontal position. In reaching to the bottom, Its velocity is \( 8 \mathrm{m} / \mathrm{s} \). The
work done in overcoming the friction is
12J. The radius of circle is | 3 | Physics |
Find the value of
\( \frac{\boldsymbol{i}^{592}+\boldsymbol{i}^{590}+\boldsymbol{i}^{588}+\boldsymbol{i}^{586}+\boldsymbol{i}^{584}}{\boldsymbol{i}^{582}+\boldsymbol{i}^{580}+\boldsymbol{i}^{578}+\boldsymbol{i}^{576}+\boldsymbol{i}^{574}}-\mathbf{1} \) | 2 | Maths |
The ratio of magnetic field at the centre
of a current carrying coil to its
magnetic moment is \( x \). If the current
and radius both are doubled, the new
ratio will become:
A \( .2 x \)
B. \( 4 x \)
c. \( x / 4 \)
D. \( x / 8 \) | 3 | Physics |
If in a wire of Young's modulus \( Y \)
longitudinal strain \( X \) is produced then
the potential energy stored in its unit volume will be :
A. \( 0.5 Y X^{2} \)
2
В. \( 0.5 Y^{2} X \)
c \( .2 Y X^{2} \)
D. \( Y X^{2} \) | 3 | Physics |
A secondary growth proceeds, in a dicot stem, the thickness of
A. sapwood increases
B. heartwood increases
c. both sapwood and heartwood increases
D. both sapwood and heartwood remains the same | 0 | Biology |
The graph of the curve \( x^{2}=3 x-y-2 \)
is
A \( \cdot \) between the lines \( x=1 \) and \( x=\frac{3}{2} \)
B. between the lines \( x=1 \) and \( x=2 \)
C. strictly below the line \( 4 y=1 \)
D. none of these | 2 | Maths |
The name given by Newlands to the arrangement created by him was:
A. law of octane
B. law of octaves
c. law of octagon
D. law of eight elements | 1 | Chemistry |
Consider the following statements:
1. If 18 men can earn Rs. 1,440 in 5 days, then 10 men can earn Rs. 1,280 in 6 days.
2. If 16 men can earn Rs. 1,120 in 7
days, then 21 men can earn Rs. 800 in 4
days. Which of the above statements is/are
correct?
A. 1 only
B. 2 only
c. Both 1 and 2
D. Neither 1 nor 2 | 2 | Maths |
What amount of heat must be supplied to \( 2.0 \times 10^{-2} k g \) of nitrogen (at room
temperature) to raise its temperature
by \( 45^{\circ} \mathrm{C} \) at constant pressure?
(Molecular mass of \( \boldsymbol{N}_{2}=\mathbf{2 8}: \boldsymbol{R}= \)
\( 8.3 m o l^{-1} K^{-1} . \) | 3 | Physics |
Fluorine differs from the other halogens
due to:
A. Small size
B. Very high electronegativity
c. Non-availability of d-orbitals
D. All of these | 1 | Chemistry |
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