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Plot a graph showing variation of capacitive reactance with the change in the frequency of the \( A C \) source.
| 3 |
Physics
|
Which of the following has the dimension of \( M L^{0} T^{-2} ? \)
A. Coefficient of viscosity
B. Surface tension
c. Vapour pressure
D. Kinetic energy
| 1 |
Chemistry
|
Hybridization of \( \boldsymbol{X} \boldsymbol{e} \boldsymbol{F}_{\mathbf{4}} \) is:
\( A \cdot s p^{3} \)
В . \( d s p^{2} \)
c. \( s p^{3} d^{2} \)
D. \( s p^{3} d \)
| 1 |
Chemistry
|
High voltage transmission results in
lower current and hence lower heat loss.
AC is preferred over DC because
A. Voltage level transformation is easier in AC at same power levels.
B. Voltage level transformation is easier in DC at same power levels.
c. Ac voltage levels are always greater than DC voltage levels
D. None of the above
| 3 |
Physics
|
When a steady current of \( 1 A \) flows
through a copper wire, the number of electrons crossing any cross-section area of the wire in one second is
A \( \cdot 6.25 \times 10^{16} \)
B . \( 6.25 \times 10^{18} \)
\( \mathbf{c} \cdot 625 \times 10^{18} \)
D. \( 6.25 \times 10^{20} \)
| 3 |
Physics
|
Carbon cannot be used in the reduction
of \( A l_{2} O_{3} \) because:
A. It is expensive
B. The enthalpy of formation of \( C O_{2} \) is more than that of \( A l_{2} O_{3} \)
C. Pure carbon is not easily available
D. The enthalpy of formation of \( A l_{2} O_{3} \) is too high
| 1 |
Chemistry
|
A square plate of edge 'a' and a circular
disc of same diameter are placed
touching each other at the midpoint of an edge of the plate as shown in figure. If mass per unit area for the two plates
are same then find the distance of
centre of mass of the system from the
centre of the disc.
| 3 |
Physics
|
A door of length \( 2 m \) and breadth 1 m is fitted in a wall. The length of the wall is 4.5 and the breadth is 3.6 m. Find the
\( \operatorname{cost} \) of the wall washing the wall, if the
rate white washing the wall is \( R s .20 \) per
\( \boldsymbol{m}^{2} \)
| 2 |
Maths
|
State True or False.
The plot of \( P V \) vs \( P \) at particular temperature is called isobar.
A. True
B. False
| 1 |
Chemistry
|
In the reaction \( \boldsymbol{B C l}_{3}+\boldsymbol{P H}_{3} \rightarrow \)
\( \left[\boldsymbol{C l}_{3} \boldsymbol{B} \leftarrow \boldsymbol{P} \boldsymbol{H}_{3}\right] \) the Lewis base is:
\( \mathbf{A} \cdot B C l_{3} \)
в. \( P H_{3} \)
c. both
D. none of them
| 1 |
Chemistry
|
A cricket ball is rolled on ice with a
velocity of \( 5.6 ~ m / s \) and comes to rest
after traveling 8 m. Find the coefficient
of friction. Given \( \boldsymbol{g}=\mathbf{9 . 8} \boldsymbol{m} / \boldsymbol{s}^{2} \)
| 3 |
Physics
|
In a unit cube, find the angle between
the diagonal of the cube and a diagonal of a skew to it?
| 2 |
Maths
|
A one kilogram roll of copper wire has a resistance of \( 2 \Omega . \) The Ratio
of resistance of \( 4 k g \) roll of copper wire of
half the thickness of the wire to the
first roll is
A . 64
B. 32
c. 16
D. 4
| 3 |
Physics
|
Find the value of \( \cos ^{-1}\left(\cos \frac{13 \pi}{6}\right) \)
| 2 |
Maths
|
Though the stone tied to a thread is moved with a constant speed of \( 10 \mathrm{m} / \mathrm{s} \) along a circular path it's motion is called an acceleration motion.
| 3 |
Physics
|
The point in a Meter bridge is at \( 35.6 \mathrm{cm} . \) If the resistances in the gaps
are interchanged,the new balance point is:
A. \( 64.4 \mathrm{cm} \)
B. \( 56 \mathrm{cm} \)
c. 41.2 ст
D. \( 56.7 \mathrm{cm} \)
| 3 |
Physics
|
Define Heredity. Give two examples.
| 0 |
Biology
|
Small amount of glucose and amino acids are absorbed by-
This question has multiple correct options
A. Simple diffusion
B. Pinocytosis
c. Facilitated diffusion
D. Active transport
| 0 |
Biology
|
Let \( f(x) \) be a function such that \( \lim _{x \rightarrow 0} \frac{f(x)}{x}=1 . \) If
\[
\lim _{x \rightarrow 0} \frac{x(1+a \cos x)-b \sin x}{\{f(x)\}^{3}}=1
\]
then \( |a+b|= \)
| 2 |
Maths
|
Find the equations corresponding to following graph:
A. \( y=-4 x-6 \)
B. \( y=4 x-6 \)
\( c \cdot y=4 x \)
D. none of these
| 2 |
Maths
|
Integrate \( \frac{(x+12)}{(x+1)^{2}(x-2)} \)
| 2 |
Maths
|
The quantity of heat needed to raise the
temperature of 'M' g of water from \( t_{1}^{o} C \) \( \operatorname{to} t_{2}^{o} C \) is \( M C\left(t_{2}-t_{1}\right) \)
A. True
B. False
| 3 |
Physics
|
The polarising angle for glass is:
A. same for different kinds of glass
B. different for different kinds of glass
C. same for lights of all colours
D. varies with time
| 3 |
Physics
|
The current that must flow through the coil of a galvanometer so as to produce a deflection of one division on its scale
is called
A. charge sensitivity of the galvanometer
B. current sensitivity of the galvanometer
c. micro-volt sensitivity
D. none of the above
| 3 |
Physics
|
Identify the open curve.
\( \mathbf{A} \cdot 1 \) only
B. 4 only
\( \mathrm{C} \cdot 1,4 \) only
D. 1,2,3 only
| 2 |
Maths
|
Which of the following is used as preservative and flavoring agent?
A. Phophoric acid
B. Sulphuric acid
c. citric acid
D. Tartaric acid
| 1 |
Chemistry
|
"Xenon fluorides are Lewis acids and
Lewis bases."
If the given statement is true enter 1
else enter 0
| 1 |
Chemistry
|
Assertion
Pascal's law is the working principle of a hydraulic lift
Reason
Pressure is thrust per unit area
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
| 3 |
Physics
|
\( 7.5 \mathrm{ml} \) of a gaseous hydrocarbon was
exploded with \( 36 \mathrm{ml} \) of \( \mathrm{O}_{2} . \) On cooling,
the volume of gases was found to be \( 28.5 \mathrm{ml}, 15 \mathrm{ml} \) of which was absorbed by KOH and the rest was absorbed in a
solution of alkaline pyrogallol. The formula of hydrocarbon is:
A. \( C_{2} H_{6} \)
в. \( C_{2} H_{4} \)
\( \mathbf{c} \cdot C_{3} H_{8} \)
D. \( C_{3} H_{6} \)
| 1 |
Chemistry
|
In the expansion of \( (1+x)^{n} \) the
coefficients of \( p^{t h} \) and \( (p+1)^{t h} \) terms
are respectively \( p \) and \( q \) then \( p+q= \)
\( \mathbf{A} \cdot \boldsymbol{n} \)
B. \( n+1 \)
\( c \cdot n+2 \)
\( \mathbf{D} \cdot n+3 \)
| 2 |
Maths
|
According to Newton's second law of
motion, the force acting on a body acts in the direction of :
A. Velocity
B. Acceleration
c. Momentum
D. wind velocity
| 3 |
Physics
|
If the resistance of a conductor is \( 5 \Omega \) at
\( 50^{\circ} \mathrm{C} \& 7 \Omega \) at \( 100^{\circ} \mathrm{C}, \) then mean
temperature coefficient of resistance (of material) is
A \( \cdot 0.013 /^{\circ} \mathrm{C} \)
B. 0.004/ \( ^{\circ} \mathrm{C} \)
c. \( 0.006 /^{\circ} \mathrm{C} \)
D. \( 0.008 /^{\circ} \mathrm{C} \)
| 3 |
Physics
|
Which of the following products is
formed in good yield by the reduction of
methyl 4-oxo-hexanoate \( (M) \) with
Li \( A l H_{4} \) in ether?
A. Methyl 4-hydroxyhexanoate
B. 1,4-Hexanediol
c. 4-Hydroxyhexanal
D. 6 -Methoxy-3-hexanone
| 1 |
Chemistry
|
A block B of mass \( 4 \mathrm{kg} \) is placed on a
rough horizontal plane. A time dependent horizontal plane. A time
dependent horizontal force \( \boldsymbol{f}=\boldsymbol{k} \boldsymbol{t}^{2} \) acts
on the block, \( k=2 N / s^{2} . \) The frictional
force between the block and the plane at
\( \boldsymbol{t}=2 \sec \) is \( \boldsymbol{\mu}=\mathbf{0 . 2} \)
A . 4 N
B. 8N
c. 12 N
D. zero
| 3 |
Physics
|
If \( \frac{x-3}{3+i}+\frac{y-3}{3-i}=i \) where \( x, y \in R \)
then
A. \( x=2 \) \& \( y=-8 \)
B. \( x=-2 \) \& \( y=8 \)
c. \( x=-2 \& y=-6 \)
D. \( x=2 \) \& \( y=8 \)
| 2 |
Maths
|
What is Poling process?
| 1 |
Chemistry
|
\( " * " \) is said to be commutative in \( A \) for
all \( a, b \epsilon A \)
A \( . a+b=b+a \)
B. \( a * b=b * a \)
\( c \cdot a-b=b-a \)
\( a \)
D. \( a * b \neq b * a \)
| 2 |
Maths
|
Define uniform circular motion. A
particle is travelling in a circle of diameter \( 15 m \). Calculate the distance
covered and the displacement when it completes two rounds.
| 3 |
Physics
|
\( \ln \) a \( \Delta P Q R, \) if \( P Q=P R \) and \( \angle Q \) is
twice that of \( \angle P, \) then \( \angle Q= \)
A .72
B. 36
c. \( 144^{\circ} \)
D. \( 108^{\circ} \)
| 2 |
Maths
|
The perimeter of the table.
A \( .402 .60 \mathrm{cm} \)
B. \( 522.60 \mathrm{cm} \)
c. \( 342.60 \mathrm{cm} \)
D. None of these
| 2 |
Maths
|
Which of the following statements is
true?
A. Normal is always perpendicular to the mirror
B. Incident ray is always on the left side of the normal
C. Reflected ray is always on the right side of the normal
D. Both B and C are true
| 3 |
Physics
|
Which of the following dissolves more rapidly in blood haemoglobin than oxygen?
A. Ozone
B. Nitrous oxide
c. sulphur dioxide
D. Carbon monoxide
| 1 |
Chemistry
|
Function of moderator in a reactor is to
A. slow down neutrons
B. absorb neutrons
c. speed up neutrons
D. catalyse neutrons
| 3 |
Physics
|
Assertion
Ionic reactions are not instantaneous.
Reason
Oppositely charged ions exert strong
forces.
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 volume(in \( \mathrm{cm}^{3} \) ) of a cuboid
whose length \( =15 \mathrm{cm}, \) breadth \( =10 \mathrm{cm} \) and height \( =8 \mathrm{cm} \)
| 2 |
Maths
|
In the circuit shown in figure, \( \boldsymbol{E}_{1}= \)
\( \mathbf{3} \boldsymbol{V}, \boldsymbol{E}_{2}=\mathbf{2} \boldsymbol{V}, \boldsymbol{E}_{3}=\mathbf{1} \boldsymbol{V} \) and \( \boldsymbol{r}_{\mathbf{1}}=\boldsymbol{r}_{\mathbf{2}}= \)
\( r_{3}=1 o h m \)
(a) Find the potential difference
between the points \( A \) and \( B \) and the
currents through each branch.
(b) If \( r_{2} \) is short circuited and the point
\( A \) is connected to point \( B \) through a
resistance \( R, \) find the currents through
\( \boldsymbol{E}_{1}, \boldsymbol{E}_{2}, \boldsymbol{E}_{3} \) and the resistor \( \boldsymbol{R} \)
| 3 |
Physics
|
If \( \boldsymbol{A}=\left(\begin{array}{c}-121 \\ 1 & 23\end{array}\right), B=(1) \) and \( C=(21) \)
verify \( (A B) C=A(B C) \)
| 2 |
Maths
|
Which of the following is not a major greenhouse gas?
A. Carbon dioxide
B. Methane
c. calcium carbonate
D. water vapour
| 1 |
Chemistry
|
Which of the following show
paramagnetism? This question has multiple correct options
A \( \cdot N O_{2} \)
B. \( N O \)
\( c \cdot K O_{2} \)
D. \( N a_{a} O \)
| 1 |
Chemistry
|
\( K M n O_{4} \) solution is:
A . red
B. purple
c. orange
D. green
E. blue
| 1 |
Chemistry
|
The minus \( \operatorname{sign} \) in \( r a t e=-\frac{d[A]}{d t} \)
indicates the
concentration of the
time. The rate of a reaction is always quantity. The rate of reaction increases with
concentration of reactants. The blanks
in the question corresponds to:
A. decrease, products, positive, increase
B. increase, reactants, negative, decrease
c. decrease, reactants, positive, increase
D. increase, products, positive, increase
| 1 |
Chemistry
|
How many mitotic divisions are needed
for a single cell to make 128 cells?
A. 7
B. 14
\( c \cdot 28 \)
D. 32
| 0 |
Biology
|
Gabriel phthalimide reaction is used for the preparation of :
A. Primary aromatic amines
B. Secondary amines
c. Primary aliphatic amines
D. Tertiary amines
| 1 |
Chemistry
|
Which of the following functions represent a simple harmonic motion?
\( \mathbf{A} \cdot \sin \omega t-\cos \omega t \)
B. \( \sin ^{2} \omega t \)
\( \mathbf{c} \cdot \sin \omega t+\sin ^{2} \omega t \)
D. \( \sin \omega t-\sin ^{2} \omega t \)
| 3 |
Physics
|
Acid rain produced when rain mixes
with gases such as sulphur dioxides. This will eventually result in:
A. lowering of pH and change of temperature in ponds
B. raising of pH in ponds, encouraging growth of microorganisms
c. lowering of pH in ponds, limiting survival of aquatic organism
D. raising of pH in ponds, limiting development of organisms
| 1 |
Chemistry
|
The four general methods of extracting metals are thermal, decomposition, displacement of one element by another, chemical reduction and
electrolytic reduction. how are the group
metals obtained and why are the other methods unsuitable?
| 1 |
Chemistry
|
Solve: \( \int \frac{\cos x}{1+\cos x} \)
| 2 |
Maths
|
\( \boldsymbol{I}-\boldsymbol{V} \) graph for a metallic wire at two
different temperatures, \( \boldsymbol{T}_{1} \) and \( \boldsymbol{T}_{2} \) is a
shown in the figure.
Which of the two temperature is lower
and why?
| 3 |
Physics
|
Give an account of the disorder of
human respiratory system
| 0 |
Biology
|
Ethylenediamine displaces \( H_{2} O \) in the
complex \( \left[\boldsymbol{F e}\left(\boldsymbol{H}_{2} \boldsymbol{O}\right)_{6}\right]^{3+} \) in three steps.
\( \left[\boldsymbol{F e}\left(\boldsymbol{H}_{2} \boldsymbol{O}\right)_{6}\right]^{3+}+\boldsymbol{3} \boldsymbol{e n} \rightarrow\left[\boldsymbol{F} \boldsymbol{e}(\boldsymbol{e n})_{3}\right]^{3+}+ \)
\( 6 H_{2} O \)
Stepwise formation constants are:
\( \log K_{1}=4.34 \)
\( \log K_{2}=3.31 \)
\( \log K_{3}=2.05 \)
Overall formation constant is \( \boldsymbol{A} \times \mathbf{1 0}^{\mathbf{2 B}} \)
\( B \) in question is:
| 1 |
Chemistry
|
A metal cube of side length \( 8.0 \mathrm{cm} \) has its upper surface displaced with
respect to the bottom by \( 0.10 m m \) when
a tangential force of \( 4 \times 10^{9} \mathrm{N} \) is applied
at the top with bottom surface fixed. The rigidity modulus of the material of the cube is :
A \( \cdot 4 \times 10^{9} N / m^{2} \)
B. \( 5 \times 10^{14} N / m^{2} \)
c. \( 8 \times 10^{9} N / m^{2} \)
D. \( 1 \times 10^{9} N / m^{2} \)
| 3 |
Physics
|
Cationic surfactants is/are:
A. \( C_{17} H_{35} \)COONa
в. \( C_{17} H_{35} \)СООК
c \( \cdot C_{17} H_{35} S O_{3} N a \)
D. \( C_{16} H_{33} N\left(C H_{3}\right)_{3} C l \)
| 1 |
Chemistry
|
Fill the columns and complete the given
table. Give explanation for your answer
| 0 |
Biology
|
The left hand derivative of \( f(x)= \)
\( [x] \sin \pi x \) at \( x=k, k \) is an integer, is
\( \mathbf{A} \cdot(-1)^{k}(k-1) \pi \)
B \cdot \( (-1)^{k-1}(k-1) \pi \)
\( \mathbf{c} \cdot(-1)^{k} k \pi \)
D. \( (-1)^{k-1} k \pi \)
| 2 |
Maths
|
If force \( F, \) work \( W \) and velocity \( v \) are
taken as fundamental quantities, then the dimensional formula of time is :
| 3 |
Physics
|
Proximal convoluted tubule of nephron
is responsible for
A. Filtration of blood
B. Maintenance of Glomerular Filtration Rate
C. Selective reabsorption of glucose, amino acid, NaCl and water
D. Reabsorption of salts only
| 0 |
Biology
|
The final product of setting of plaster of paris is
A. gypsum
B. anhydrite
c. cement
D. mortar
| 1 |
Chemistry
|
Which kind of isomerism is exhibited
by octahedral complex \( \left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{4}\right. \)
\( \left.\boldsymbol{B} \boldsymbol{r}_{2}\right] \boldsymbol{C l} ? \)
A. Geometrical and ionization
B. Geometrical and optical
c. optical and ionization
D. Geometrical only
| 1 |
Chemistry
|
Details of some gases taken at \( 273 \mathrm{K} \)
temperature and 1 atm pressure are given in the table.
\( \begin{array}{lll}\text { Gas } & \text { Volume (L) } & \text { Number of moles } \\ \text { Hydrogen } & 224 & 10 \\ \text { Helium } & 112 & 5 \\ \text { Oxygen } & 224 & 10 \\ & & \end{array} \) Ammonia 56 2.5
(a) On the basis of which gas law, the volume and the number of moles are
given in the table?
(b) Represent this gas law in mathematical form.
(c) Among these, if the pressure of hydrogen gas is changed to 2 atm. Calculate the new volume.
| 1 |
Chemistry
|
\( A \) and \( B \) are two candidates seeking
admission in I.I.T. The probability that \( \boldsymbol{A} \)
is selected is 0.5 and the probability that both \( A \) and \( B \) are selected is
atmost \( 0.3 . \) Is it possible that the probability of \( \boldsymbol{B} \) getting selected is \( \mathbf{0 . 9} \) ?
If it is possible then enter 1 , else enter 0
| 2 |
Maths
|
Balloon type inflated persistent calyx is characteristic of
A. Helianthus
B. Colutea
c. Physalis
D. All of the above
| 0 |
Biology
|
A very thin metal sheet is inserted
halfway between the parallel plates of an air-gap capacitor. The sheet is thin compared to the distance between the plates, and it does not touch either plate when fully inserted. The system had capacitance, \( C \), before the plate is inserted.
What is the equivalent capacitance of the system after the sheet is fully
inserted?
\( ^{A} \cdot \frac{1}{4} C \)
в. \( \frac{1}{2} C \)
c. \( C \)
D. \( 2 C \)
E . \( 4 C \)
| 3 |
Physics
|
Length of one turn of DNA is
\( A \cdot 3.4 \AA \)
B. 34 \( \dot{A} \)
\( c \cdot 20 \dot{A} \)
D. 3.04 \( \hat{A} \)
| 0 |
Biology
|
Due to the weak Van der Waals' forces
and less distance between the layers,
graphite:
A. show lubricating property
B. has lusture
c. is hexagonal
D. is a good conductor of electricity
| 1 |
Chemistry
|
On a stationary sail boat, air is blown at
the sails from a fan attached to the
boat. The boat will
A. remain at rest
B. spin round
c. move in the direction in which air is blown
D. move in a direction opposite to that in which air is blown
| 3 |
Physics
|
Name the two major defects of an eye.
Explain causes of their development
and discuss methods of their
correction.
| 3 |
Physics
|
\( A B C \) is a right angled triangle and 0 is
the mid point of the side opposite to the
right angle. Explain why \( O \) is
equidistant from \( A, B \) and, \( C \)
| 2 |
Maths
|
Suppose \( \boldsymbol{f}(\boldsymbol{n})= \)
\( \log _{2}(3) \cdot \log _{3}(4) \cdot \log _{4}(5) \dots \dots \log _{n-1}(n) \)
then the sum \( \sum_{k=2}^{100} f\left(2^{k}\right)=\lambda \)
then \( \frac{\lambda}{1683} \) is equal to?
| 2 |
Maths
|
Which element has the highest valency with respect to oxygen?
A. Sodium
B. Aluminium
c. chlorine
D. Sulphur
| 1 |
Chemistry
|
Assertion
\( G_{1} \) phase is the interval between
mitosis and initiation of DNA
replication
Reason
The cell is metabolically inactive during
\( G_{1} \) phase.
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
|
In an experiment, 20 g of vanadium \( (V) \) oxide (molar mass \( =182 \) g/mol) was
reduced by excess of zinc dust in acidic solution to vanadium
(II) ions. If the
required number of moles of iodine to
reoxidise vanadium
(II) to \( V O^{2+} \) is
\( 22 \times 10^{-x}, \) then what is the value of \( x ? \)
| 1 |
Chemistry
|
The process by which the cytoplasm of a
cell divides to form two daughter cells.
A. Cytokinesis
B. Prophase
c. Metaphase
D. Anaphase
E. Telophase
| 0 |
Biology
|
When an \( \alpha \) -particle of mass ' \( m^{\prime} \) moving
with velocity \( ^{\prime} v^{\prime} \) bombards on a heavy
nucleus of charge \( ^{\prime} Z e^{\prime}, \) its distance of
closest approach from the nucleus
depends on \( m \) as:
A \( \cdot \frac{1}{m} \)
в. \( \frac{1}{\sqrt{m}} \)
c. \( \frac{1}{m^{2}} \)
D. \( m \)
| 3 |
Physics
|
A body, projected vertically up with a velocity of \( 20 m s^{-1}, \) reaches a height of \( 20 m . \) If it is projected with a velocity of
\( 40 m s^{-1}, \) then the maximum height
reached by the body is:
A . \( 20 m \)
в. 10 т
\( c .80 m \)
D. \( 40 m \)
| 3 |
Physics
|
Which of the following is a transition element?
A. Element with atomic number 2
B. Element with atomic number 7
c. Element with atomic number 19
D. Element with atomic number 35
E. Element with atomic number 74
| 1 |
Chemistry
|
Find the degree of the differential equation: \( \sqrt{1+x^{2}}=\frac{d y}{d x} \)
\( A \cdot 2 \)
B.
\( c \cdot 4 \)
D. None of these
| 2 |
Maths
|
\( \frac{1}{c},\left(\frac{1}{c a}\right)^{\frac{1}{2}}, \frac{1}{a} \) is in
\( A \cdot A P \)
в. GP
\( c . \) не
D. NONE
| 2 |
Maths
|
Then
Answer: DC produced bisects BC at right angle. If true then enter 1 else if False enter 0
| 2 |
Maths
|
Which of the above represents the formula for the most common
compound of \( X \) and \( Y ? \) Where \( X \) is \( C a \)
and \( Y \) is \( F \)
A. \( X_{2} Y \)
\( Y \)
в. \( X Y \)
c. \( X Y_{2} \)
D. \( X Y_{3} \)
E. \( X Y_{4} \)
| 1 |
Chemistry
|
The pair of molecules in which one of
the molecule has linear shape while
another one has square based pyramid
shape is:
\( \mathbf{A} \cdot\left[B r_{3}^{-}, P F_{5}\right] \)
в. \( C O_{2}, N F_{3} \)
\( \mathrm{c} \cdot \mathrm{SO}_{2}, \mathrm{CIF}_{5} \)
D \( \cdot\left[l_{3}^{-}, B r_{5}\right] \)
| 1 |
Chemistry
|
A battery jar contained a solution of
copper sulfate. Two electrodes. one
made of copper the other a metal object to be copper plated, were placed in the jar and connected to a source of direct current. Which of the following statements concerning this system is correct?
A. The object to be placed is the anode
B. Oxidation occurs at the anode
c. The sulfate ions migrate toward the cathode
D. The concentration of the copper sulfate solution increases as electrolysis proceeds
E. The copper electrode increases in mass
| 1 |
Chemistry
|
Lymph is transported through the
A. Lymph nodes
B. Lymphocytes
c. Lymph nerves
D. Lymph vessels
| 0 |
Biology
|
Which of the following elements has lowest electronegativity?
A. \( N a \)
в. \( M g \)
c. \( A l \)
D. \( S \) i
| 1 |
Chemistry
|
Assertion (A): Aldehydes are one of the constituents of photochemical
\( \operatorname{sinog} \)
Reason (R): Aldehydes are produced by photochemical oxidation of hydrocarbons by ozone.
A. Both A and R are true and R is the correct explanation of A.
B. Both A and R are true but R is not correct explanation of A.
c. A is true and \( \mathrm{R} \) is false
D. A is false and R is true
| 1 |
Chemistry
|
A Sound wave with an amplitude of \( 3 c m \)
starts moving towards right from origin
and gets reflected at a rigid wall after a
second. If the velocity of the wave is
\( 340 m s^{-1} \) and it has a wavelength of \( 2 m \)
the equations of incident and reflected
waves are
A \( \cdot y=3 \times 10^{-2} \sin \pi(340 t-x), y=-3 x \)
\( 10^{-2} \sin \pi(340 t+x) \) towards left
B . \( y=4 \times 10^{-2} \sin \pi(340 t+x), y=-4 \times \)
\( 10^{-2} \sin \pi(340 t+x) \) towards left
C . \( y=5 \times 10^{-2} \sin \pi(340 t-x), y=-5 \times \)
\( 10^{-2} \sin \pi(340 t-x) \) towards left
D . \( y=6 \times 10^{-2} \sin \pi(340 t-x), y=-6 \times \)
\[
10^{-2} \sin \pi(340 t+x) \text { towards left }
\]
| 3 |
Physics
|
The handles of cooking vessels are covered with plastic or wood because:
A. They are beautiful.
B. It is customary
c. They are good conductors of heat
D. They are bad conductors of heat
| 3 |
Physics
|
The work done by a force \( \overline{\boldsymbol{F}}= \)
\( \left(-6 x^{3} i\right) N \) in displacing particle from
\( \boldsymbol{x}=\boldsymbol{a} \boldsymbol{m} \boldsymbol{t} \boldsymbol{o} \boldsymbol{x}=-\boldsymbol{2} \boldsymbol{m} \) is
| 3 |
Physics
|
The maximum value of \( \left(\frac{\log x}{x}\right) \) is
A \( \cdot\left(\frac{1}{e}\right. \)
B. \( \frac{2}{e} \)
\( c \cdot e \)
D.
| 2 |
Maths
|
In a survey of 600 students in a school,
(i) 160 students were found to be taking
Tea 215 taking Coffee, 150 were taking both Tea and Coffee.
(ii) 150 students were found to be
taking tea and 225 taking coffee, 100 were taking both Tea and Coffee. Find how many students were taking neither tea nor coffee?
| 2 |
Maths
|
The largest sphere is carved out of a cube of a side \( 7 \mathrm{cm} . \) Find the volume of
the sphere.
| 2 |
Maths
|
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