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Given that mass of earth is \( M \) and its
radius \( R \) body is dropped from a height equal to the radius of the earth above
the surface of the earth. When it
reaches the ground velocity of body will be
\( ^{A} \cdot \frac{G M}{R} \)
\( ^{\text {В. }}\left(\frac{G M}{R}\right)^{1 / 2} \)
c. \( \frac{2 G M}{R} \)
\( ^{\mathrm{D} \cdot}\left(\frac{2 G M}{R}\right)^{1 / 2} \)
| 3 |
Physics
|
When electricity is passed through a
solution of \( A l C l_{3} \) and \( 13.5 g \) of \( A l \)
is deposited, the number of Faraday required must be:
A . 0.5
в. 1.0
c. 1.5
D. 2.0
| 1 |
Chemistry
|
On decreasing temperature, a liquid turns into solid. This is:
A. condensation
B. melting
c. freezing
D. sublimation
| 1 |
Chemistry
|
Bacteria which are found in marshy
areas and among the flora of cattle rumen are called
A. Acidophiles
B. Thermophiles
c. Methanogens
D. Thermoacidophiles
| 0 |
Biology
|
Whenever, current is changed in a coil, an induced e.m.f. is produced in the same coil. This property of the coil is due to
A. mutual induction
B. eddy currents
c. self induction
D. hysteresis
| 3 |
Physics
|
Element with atomic number 113 has
been reported in August \( 2003 . \) Its
electronic configuration is similar to
that of:
\( \mathbf{A} \cdot S i \)
в. \( G a \)
\( c . B i \)
D. \( A t \)
| 1 |
Chemistry
|
Evaluate \( \cos ^{-1}\left(\cos \left(\frac{\pi}{4}\right)\right) \)
A.
B. \( -\frac{\pi}{4} \)
c. \( \frac{3 \pi}{4} \)
D. \( -\frac{3 \pi}{4} \)
| 2 |
Maths
|
The sum of \( n \) terms of the series whose
\( \boldsymbol{n}^{t h} \) term is \( \boldsymbol{n}(\boldsymbol{n}+1) \) is equal to
A \( \frac{n(n+1)(n+2)}{3} \)
B. \( \frac{(n+1)(n+2)(n+3)}{12} \)
c. \( n^{2}(n+2) \)
D. \( n(n+1)(n+2) \)
| 2 |
Maths
|
For the reaction \( \boldsymbol{O}_{3(g)}+\boldsymbol{O}_{(g)} \rightarrow \mathbf{2} \boldsymbol{O}_{2(g)} \)
if the rate law expression is, rate \( = \)
\( \boldsymbol{K}\left[\boldsymbol{O}_{3}\right][\boldsymbol{O}] \) the molecularity and order of
the reaction are:
A . 2 and 2
B. 2 and 1.33
c. 2 and 1
D. 1 and 2
| 1 |
Chemistry
|
The number of spectral line obtained in
Bohr spectrum of hydrogen atom when an electron is excited from ground level to 5 th orbit is :
A . 10
B. 5
\( c \cdot 8 \)
D. 15
| 1 |
Chemistry
|
If the radius of a circle is tripled, the
ares becomes.
A. 9 times
B. 3 times
c. 6 times
D. 30 times
| 2 |
Maths
|
Find the number of integral solution of
\( (1-i)^{x}=2^{x} \)
| 2 |
Maths
|
A small bee produces sound, while it moves. The sound is created due to
A. Grinding its teeth as it moves
B. Friction due to air
c. Flapping of wings
D. Sound due to its vocal chord
| 3 |
Physics
|
on by a spring with spring constant \( k \)
and a weak frictional force of constant
magnitude \( f \). The block is pulled a
distance \( x_{0} \) from equilibrium position and then released. It oscillates many
times and ultimately comes to rest. Find the number of cycles the mass oscillates before coming to rest:
\( ^{\text {A }} \cdot \frac{1}{4}\left[\frac{k x_{0}}{f}-1\right] \)
в. \( \frac{1}{2}\left[\frac{k x_{0}}{f}-1\right] \)
c. \( \frac{1}{3}\left[\frac{k x_{0}}{f}-1\right] \)
D. none of the above
| 3 |
Physics
|
Which part of the eye is a dark muscular diaphragm?
A. Iriss
B. Cornea
c. Pupil
D. Retina
| 3 |
Physics
|
Use the elements of \( \operatorname{set} A=\{x, y, z\} \) to
form all possible ordered pairs Find the number of elements in the
ordered pair.
| 2 |
Maths
|
\( f\left(\frac{1+\sin \theta-\cos \theta}{1+\sin \theta+\cos \theta}\right)^{2}= \)
\( \lambda\left(\frac{1-\cos \theta}{1+\cos \theta}\right), \) then \( \lambda \) equals
\( A \)
B. 1
\( c \cdot 2 \)
D.
| 2 |
Maths
|
White phosphorus \( P_{4} \) has:
This question has multiple correct options
A. \( \operatorname{six} P-P \) single bonds
B. four \( P-P \) single bonds
C. four lone pairs of electrons
D. \( P-P-P \) angle of 60 degerees
| 1 |
Chemistry
|
Draw a ray diagram to show how a converging lens is able to form the image of the sun.
| 3 |
Physics
|
Phenol \( \frac{1 . C H C l_{3} / N a O H}{2 . H^{+}} \)
Salicyl aldehyde
The above reaction is known as:
A. Gattermann reaction
B. Sandmeyer reaction
c. Perkin reaction
D. Reimer-Tiemann reaction
| 1 |
Chemistry
|
(i) What are the postulates of Werner's
theory?
(ii) Write the IUPAC names fo
\( \boldsymbol{K}_{3}\left[\boldsymbol{F} e(\boldsymbol{C} \boldsymbol{N})_{6}\right],\left[\boldsymbol{C o}\left(\boldsymbol{N} \boldsymbol{H}_{3}\right)_{6}\right] \boldsymbol{C l}_{3} \)
| 1 |
Chemistry
|
Potential energy of a simple harmonic oscillator at its mean position is 0.4 J. If its kinetic energy at a displacement half of its amplitude from mean position is \( 0.6 \mathrm{J}, \) its total energy
is
A . \( 1.0 J \)
в. \( 1.2 J \)
c. \( 1.4 J \)
D. 1.6 .5
| 3 |
Physics
|
Discuss the behavior of wire under
increasing load
| 3 |
Physics
|
The point charges \( -5 n C, 10 n C \) and \( 12 n C \) are located at (0,0,0),(0,0,1) and (0,0,2) respectively. Find the total energy of the system.
| 3 |
Physics
|
If the \( 3^{r d} \) and the \( 9^{t h} \) terms of an \( A P \) are
4 and -8 respectively, then which term of this \( A P \) is zero
| 2 |
Maths
|
The solution of \( \frac{x-5}{2}-\frac{x-3}{5}=\frac{1}{2} \)
is
\( \mathbf{A} \cdot x=7 \)
B. \( x=9 \)
c. \( x=8 \)
D. \( x=5 \)
| 2 |
Maths
|
Show that square matrix \( A \) and its
transpose \( A^{T} \) have the same eigen
values.
| 2 |
Maths
|
Let the function \( f(x) \) be defined as
\( \boldsymbol{f}(\boldsymbol{x})=\left\{\begin{array}{ll}\tan ^{-1} \boldsymbol{\alpha}-\mathbf{3} \boldsymbol{x}^{2}, & \boldsymbol{0}<\boldsymbol{x}<1 \\ -\boldsymbol{6} \boldsymbol{x}, & \boldsymbol{x} \geq \mathbf{1}\end{array}\right. \)
\( f(x) \) can have a maximum at \( x=1 \) if
the value of \( \alpha \) is
A.
B. 2
\( c \)
D. None of these
| 2 |
Maths
|
For the identification of the name of
species found in an area, one would use:
A. Manuals
B. Catalogues
c. Monographs
D. Museum
| 0 |
Biology
|
Fill in the blanks:
In the Lassaigne's test, the sulphur
present in the organic compound is converted into
| 1 |
Chemistry
|
Find the values of \( x \) and \( y \) which satisfy the given equations \( (x, y \in R) \) \( \frac{x-1}{1+i}+\frac{y-1}{1-i}=i \)
| 2 |
Maths
|
Find the direction cosines of the sides
of the triangle whose vertices are (3,5,-4),(-1,1,2) and (-5,-5,-2)
| 2 |
Maths
|
The number of quadratic equation which are unchanged by squaring their roots is
| 2 |
Maths
|
In Blackmann's Law of limiting Factors the rate of photosynthesis continues to increase with the successive increase
in the amounts of
A. Carbon dioxide, light, temperature
B. Temperature, light, carbon dioxide
c. Light, temperature, carbon dioxide
D. Light, carbon dioxide, temperature
| 0 |
Biology
|
The type of isomerism shown by the
\( \operatorname{complex}\left[\boldsymbol{C o C I}_{2}(\boldsymbol{e n})_{2}\right] \) is:
A. linkage isomerism
B. ionization isomerism
c. coordination isomerism
D. geometrical isomerism
| 1 |
Chemistry
|
The structure A represents Fischer Projection of a compound. The
structures I to IV represents WedgeDash Notations for the same compound. Which Wedge-Dash Notation is the correct representation of structure \( A ? \)
\( A \)
B. II
\( c \)
\( D \cdot \mid V \)
| 1 |
Chemistry
|
Using IUPAC norms, write the systematic names of the following.
(i) \( \boldsymbol{K}_{\mathbf{4}}\left[\boldsymbol{F} \boldsymbol{e}(\boldsymbol{C} \boldsymbol{N})_{\boldsymbol{6}}\right] \)
(ii) \( \left[\boldsymbol{C u}\left(\boldsymbol{N} \boldsymbol{H}_{3}\right)_{4}\right] \boldsymbol{S} \boldsymbol{O}_{4} \)
| 1 |
Chemistry
|
What is the force between the layer of
carbon atoms in graphite?
| 1 |
Chemistry
|
A 4.0 -cm-high object is placed at a distance of \( 60 \mathrm{cm} \) from a concave lens
of focal length \( 20 \mathrm{cm} . \) Find the size of
the image.
\( \mathbf{A} \cdot 2.5 \mathrm{cm} \)
B. \( 1.0 \mathrm{cm} \)
c. \( 3.0 \mathrm{cm} \)
D. \( 4.0 \mathrm{cm} \)
| 3 |
Physics
|
When white ppt. of \( A g_{2} C O_{3} \) is dissolved
in \( N H_{3} \) solution, then compound \( X \) is
formed
Find the value of magnetic moment of
\( \mathbf{X} \)
A. 0
B. 2
\( c \cdot 1 \)
D.
| 1 |
Chemistry
|
Iron or steel is used in reinforcement in
concrete because:
A. Concrete has high coefficient of expansion than iron or steel
B. Concrete has low coefficient of expansion than iron or steel
c. Both have nearly equal coefficient of expansions
D. Iron or steel is a good conductor of heatt
| 3 |
Physics
|
If a train travelling at \( 72 \mathrm{km} / \mathrm{h} \) is to be
brought to rest at a distance of \( 200 \mathrm{m} \) then its retardation should be:
A \( \cdot 20 m / s^{2} \)
B. \( 2 s^{2} \)
C \( .10 \mathrm{m} / \mathrm{s}^{2} \)
D. \( 1 \mathrm{m} / \mathrm{s}^{2} \)
| 3 |
Physics
|
The difference between the heat of
reaction at constant pressure and constant volume for the reaction
\( \mathbf{2} C_{6} \boldsymbol{H}_{6}(l)+\mathbf{1 5} \boldsymbol{O}_{2}(\boldsymbol{g}) \rightarrow \mathbf{1 2} \boldsymbol{C} \boldsymbol{O}_{2}(\boldsymbol{g})+ \)
\( 6 H_{2} O(l) \) at \( 25^{\circ} C \) in \( k J \) is:
A . -7.43
в. 3.72
c. -3.72
D. 7.43
| 1 |
Chemistry
|
Assertion
Atom is electrically neutral
Reason
A neutral particle, neutron is present in
the nucleus of the atom
A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
c. Assertion is correct but Reason is incorrect
D. Both Assertion and Reason are incorrect
| 1 |
Chemistry
|
The magnetic force acting on a charged particle of charge \( -2 \mu C \) in a magnetic
field of \( 2 T \) acting in y-direction, when the particle velocity is \( (2 \check{i}+3 j) \)
\( \times 10^{6} m s^{-1} \) is :
A. \( 8 \mathrm{N} \) in \( \mathrm{z} \) -direction
B. 4 N in Z-direction
c. 8 N in y-direction
D. 4 N in Y-direction
| 3 |
Physics
|
A ball falls on the ground from a height of \( 2.0 m \) and rebounds up to a height of 1.5 \( m . \) Find the coefficient of restitution
| 3 |
Physics
|
The vapour pressure of two pure liquids \( A \) and \( B \) are 50 and 40 torr respectively. If 8 moles of \( A \) is mixed with \( x \) moles of
B, then vapour pressure of solution obtained is 48 torr. What is the value of
x?
| 1 |
Chemistry
|
Which are true for a standard hydrogen
electrode?
This question has multiple correct options
A. The hydrogen ion concentration is 1 m
B. Temperature is \( 25^{\circ} \mathrm{C} \)
c. Pressure of hydrogen is 1 bar
D. It contains a metallic conductor which does not absorb hydrogen
| 1 |
Chemistry
|
In deriving a formula for the combined
resistance of three different resistors in
series, Kirchhoffs laws are used.
Which physics principle is involved in this derivation?
A. The conservation of charge
B. The direction of the flow of charge is from negative to positive
c. The potential difference across each resistor is the \( \operatorname{same} \)
D. The current varies in each resistor, in proportion to the resistor value
| 3 |
Physics
|
The Henry's law constant for helium gas
in water at \( 30^{\circ} \mathrm{C} \) is \( 3.70 \times 10^{-4} \mathrm{M} / \mathrm{atm} \)
When the partial pressure of helium above a sample of water is 0.650 at \( \mathrm{m} \) the concentration of helium in the water
is
M.
A. \( 5.69 \times 10^{-4} \)
В. \( 1.76 \times 10^{3} \)
c. 1.30
D. \( 2.41 \times 10^{-4} \)
E . \( 3.70 \times 10^{-4} \)
| 1 |
Chemistry
|
Three bulbs \( A, B \) and \( C \) are connected
as shown in figure. The bulbs \( B \) and \( C \)
are identical. If the bulb \( C \) is fused,
then:
A. Brightness of both bulbs \( A \) and \( B \) will increase
B. Brightness of both bulbs \( A \) and \( B \) will decrease
c. Brightness of the bulb \( A \) decrease and that of bulb \( B \) ncreases
D. None of the bulbs will glow
| 3 |
Physics
|
If the earth is one-fourth of its present distance from the sun, the duration of
the year will be changed to :
A. half of the present year
B. \( \frac{1}{4} t h \) of the present year
c. \( \frac{1}{8} t h \) of the present year
D. \( \frac{7}{8} t h \) of the present year
E \( \cdot \frac{1}{16} t h \) of the present yea
| 3 |
Physics
|
A sample of acetaldehyde contained some ethyl alcohol as impurity. The
reagent useful for the purification of
\( \boldsymbol{C H}_{3} \boldsymbol{C H O} \) is :
A. \( N a H C O_{3} \)
B. \( N a_{2} C O_{3} \)
\( \mathbf{c} \cdot \operatorname{NaH} S O_{3} \)
D. \( P C l_{5} \)
| 1 |
Chemistry
|
A substance which increases the rate of
reaction but itself remain chemically unchanged is called a/an:
A. substrate
B. enzyme
c. reactant
D. product
| 1 |
Chemistry
|
Fin an acute angle \( \Theta \), when
\( \frac{\cos \Theta-\sin \Theta}{\cos \Theta+\sin \Theta}=\frac{1-\sqrt{3}}{1+\sqrt{3}} \)
| 2 |
Maths
|
For \( z=x+i y \) find the real and
imaginary part of \( e^{z} \)
| 2 |
Maths
|
Form the differential equation representing the family of curves \( y= \)
\( a e^{2 x}+b e^{-2 x} \) where a and \( b \) are arbitrary
constants.
| 2 |
Maths
|
What is the colour code of a corbon
resistor having a resistance of \( 470 \Omega \)
and a tolerance of 5\%?
| 3 |
Physics
|
The angles is to be bisected to obtain an
angle of \( 90^{0} \) is
A \( \cdot 60^{0} \) and \( 45^{0} \)
B. \( 60^{0} \) and \( 120^{\circ} \)
\( \mathrm{c} \cdot 120^{0} \) and \( 180^{\circ} \)
D. \( 30^{\circ} \) and \( 60^{\circ} \)
| 2 |
Maths
|
The annual income of Ruby in 2010 was
around Rs. \( 21000 . \) If she invested one-
third of it at \( 4 \% \) interest compounded quarterly, then what would be her savings at the end of a year?
A .7184
B. 7284
\( c .7384 \)
D. 7484
| 2 |
Maths
|
A glass sphere of radius \( 15 \mathrm{cm} \) contains
a small air bubble at a distance \( 6 \mathrm{km} \)
from its centre when viewed along its diameter from the nearest side,
| 3 |
Physics
|
Find volume of Cuboid of \( l=3 m, b= \)
\( \mathbf{2} \boldsymbol{m}, \boldsymbol{h}=\mathbf{4} \boldsymbol{m} \)
| 2 |
Maths
|
Covalent compounds are usually liquids or gases due to the weak force of attraction between their molecules.
A. True
B. False
| 1 |
Chemistry
|
Two men and 7 children complete a
certain piece of work in 4 days while 4 men and 4 children complete the same work in only 3 days. The number of days required by 1 man to complete the work is
A. 60 days
B. 15 days
c. 6 days
D. 51 days
| 2 |
Maths
|
Calculate the maximum value of the
function \( f(x)=1-\cos x \) between 0
and \( 2 \pi \)
\( \mathbf{A} \cdot \mathbf{0} \)
B.
c. 1.5
D. 2
E . 2.5
| 2 |
Maths
|
If pressure \( P, \) Velocity \( V, \) and time \( T \) are taken as fundamental physical quantities, then the
dimensional formula for force is:
A \( \cdot P V^{2} T^{2} \)
B . \( P^{-1} V^{2} T^{-1} \)
c. \( P V T^{2} \)
D. \( P^{-1} V T^{2} \)
| 3 |
Physics
|
Glycerol contains:
A \( \cdot 1^{\circ} \) Carbon
B. \( 2^{\circ} \) Carbon
\( c \cdot 3^{o} \) Carbon
D. Both \( 1^{\circ} \) and \( 2^{\circ} \) carbon
| 1 |
Chemistry
|
A glass is filled with water up to its
brim and a thick hand card placed on
top of it. Now keeping the card tightly closed and pressed with palm, the glass full of water is inverted and placed
upside down. The palm is gently
removed from the card. It is observed
that the piece of card dose not fall off
the glass though the glass is full of water and its whole weight is exerting pressure on the card. Why does it happen?
| 3 |
Physics
|
When a large bubble rises from the bottom of a lake to the surface, its radius doubles. If atmospheric pressure is equal to that of column of water height \( \mathrm{H} \), then the depth of lake is :-
\( A \cdot H \)
B. 2H
c. 7H
D. 8H
| 3 |
Physics
|
The formula of the final product formed when acetylene reacts with ammonical silver nitrate is :
A. \( A g C \equiv C H \)
B. \( A g C \equiv C A g \)
\( \mathbf{c} \cdot(A g)_{2} C=C H_{2} \)
D. \( C H_{2}=C H_{2} \)
| 1 |
Chemistry
|
State the following statement is True or
False
If two distinct lines are intersecting each other in a plane then they cannot
have more than one point in common.
A. True
B. False
| 2 |
Maths
|
1
11
\( \left\{\begin{array}{l}= \\ \frac{1}{4}\end{array}\right. \)
\( \mid \begin{array}{c}- \\ + \\ ++\end{array}+ \)
\( -\quad- \)
\( \quad+\frac{j}{+} \)
\( \left\{\begin{array}{l}-- \\ ++++++\end{array}\right. \)
| 1 |
Chemistry
|
Integrate:
\( 2 x^{2} e^{x^{2}} \)
| 2 |
Maths
|
\( H_{2} S O_{4} \) cannot be used to dry up \( H_{2} S \)
because it oxidises \( H_{2} S \) to \( S O_{2} \) and \( S \)
If true enter 1 , else enter 0 .
A.
| 1 |
Chemistry
|
Which of the following statements is
not true about electric field lines?
A. Electric field lines start from positive charge and end at negative charge
B. Two electric field lines can never cross each other
C. Electrostatic field lines do not form any closed loops
D. Electric field lines cannot be taken as continuous
curve
| 3 |
Physics
|
Find the common area enclosed by the parabolas \( \boldsymbol{y}^{2}=\boldsymbol{x} \) and \( \boldsymbol{x}^{2}=\boldsymbol{y} \)
| 2 |
Maths
|
In the aqueous solution of soap, above CMC (Critical Micelle Concentration):
This question has multiple correct options
A. the cations associate to form aggregates
B. the anions associates to form the clusters of colloidal
dimension
C. the polar ends forming the clusters are directed towards water
D. the non polar (hydrocarbon) ends are directed towards water
| 1 |
Chemistry
|
Presence of nitrogen in which among the following compounds cannot be detected by Lassaigne method?
A. Hydrazine
B. Aniline
c. p-toluidine
D. Picric acid
| 1 |
Chemistry
|
Draw \( \triangle A B C, \) where \( m \angle A B C= \)
\( 90^{\circ} ; B C=4 c m \) and \( A C=5 c m \) and
then construct \( \triangle B X Y \) with \( 4 / 3 \) scale
factor. Write points of construction
| 2 |
Maths
|
How long does it take the car to pass it? (in min)
A . 4.5
B. 5.5
\( c .3 .5 \)
D. 6.5
| 3 |
Physics
|
the isotop of hydrogen Which is radioactive is
A. Tritium
B. Deuterium
c. Nacent hydrogen
D. Parahydrogen
| 1 |
Chemistry
|
If \( y=x \sqrt{a^{2}+x^{2}}+ \)
\( a^{2} \log (x+\sqrt{a^{2}+x^{2}}) \) then \( \frac{d y}{d x}= \)
\( 2 \sqrt{a^{2}+x^{2}} \)
| 2 |
Maths
|
Wave pulse on a string shown in the
figure is moving to the right without
changing shape. Consider two particles
at positions \( x_{1}=1.5 m \) and \( x_{2}= \)
2.5 \( m . \) Their transverse velocities at the
moment shown in the figure are along
the
A. positive y axis and positive y axis respectively
B. negative y axis and positive y axis respectively
C. positive y axis and negative y axis respectively
D. negative y axis and negative y axis respectively
| 3 |
Physics
|
In the conversion of \( \boldsymbol{O}_{2} \longrightarrow \boldsymbol{O}_{2}^{-} \) the
incoming electron goes to the orbital:
A \( \cdot \pi^{*} 2 p x \)
B . \( \pi_{2 p x} \)
\( \mathbf{c} \cdot \sigma_{2 p z}^{*} \)
\( D \cdot \sigma_{2 p^{2}} \)
| 1 |
Chemistry
|
Find the binomial distribution for which
the mean is 4 and variance 3
| 2 |
Maths
|
Give the structural formulae for the
following:
Diethyl ether
| 1 |
Chemistry
|
DNA strands
A. Have quaternary structure like protein
B. Are bonded by disulphide bonds
C. Have same polarity
D. Are antiparallel
| 0 |
Biology
|
\( x \)
\( c \)
\( = \)
| 1 |
Chemistry
|
The opening of right auricle into the right ventricle is guarded by
A . Mitral valve
B. Pulmonary semilunar valve
c. Bicuspid valve
D. Tricuspid valve
| 0 |
Biology
|
There are 30 tickets in a box numbered
from 1 to \( 30 . \) A ticket is drawn out at
random. Let \( A \) be the event that the
number on the ticket is a multiple of 6
Write the sample set \( S \) and outcomes of
event \( A \) in set form.
| 2 |
Maths
|
How Many words, with or without
meaning, each of 2 vowels and 3
consonants can be formed from the
letters of the word \( D A U G H T E R ? \)
| 2 |
Maths
|
Micelles are:
A. adsorbed catalyst
B. ideal solution
\( \mathbf{C} \cdot \operatorname{gel} \)
D. associated colloids
| 1 |
Chemistry
|
In a coil of area \( 10 \mathrm{cm}^{2} \) and 10 turns with
magnetic field directed perpendicular to the plane and is changing at the rate
of \( 10^{8} \) Gauss/second. The resistance of
the coil is \( 20 \Omega \). The current in the coil
will be
A. \( 0.5 \mathrm{A} \)
B. 5A
\( c . \) 50 A
D . \( 5 \times 10^{8} A \)
| 3 |
Physics
|
\( A, B, C \) are the three angles of a
triangle \( . \) if \( \boldsymbol{A}-\boldsymbol{B}=\mathbf{1 5}^{\circ}, \boldsymbol{B}-\boldsymbol{C}=\mathbf{3 0}^{\circ} \)
find \( \angle \boldsymbol{A}, \angle \boldsymbol{B}, \angle \boldsymbol{C} \)
| 2 |
Maths
|
Redox indicators are substances that
undergo a colour change at specific
A \( . p H \)
B. electrode potential
c. both \( A \) and \( B \)
D. none of them
| 1 |
Chemistry
|
A metal 'X' is prepared by the electrolysis of fused chloride. It reacts with hydrogen to form a colourless solid, from which hydrogen gas is
released on treatment with water.
The metal'X' is :
\( A \cdot A \)
в. са
\( c \cdot c u \)
D. zn
| 1 |
Chemistry
|
Aqueous solutions of
\( \boldsymbol{H} \boldsymbol{N} \boldsymbol{O}_{3}, \boldsymbol{K} \boldsymbol{O} \boldsymbol{H}, \boldsymbol{C} \boldsymbol{H}_{3} \boldsymbol{C O O H}, \) and
\( \boldsymbol{C H}_{3} \boldsymbol{C O O N a} \) of identical
concentrations are provided. The pair(s) of solutions which form a buffer upon
mixing is/ are:
This question has multiple correct options
A. \( H N O_{3} \) and \( C H_{3} \) COOH
в. \( K O H \) and \( C H_{3} C O O N a \)
c. \( H N O_{3} \) and \( C H_{3} C O O N a \)
D. \( C H_{3} C O O H \) and \( C H_{3} C O O N a \)
| 1 |
Chemistry
|
Grills of doors and windows are always
painted before they are used? Give
reason
| 1 |
Chemistry
|
A circle of radius \( 3 \mathrm{cm} \) can be drawn
through two points \( A, B \) such that
\( A B=6 \mathrm{cm} \)
State True or False
\( A \). False
B. True
c. Cannot be determined
D. None of the above
| 2 |
Maths
|
Which of the following is a complex salt?
A. Fischer salt
B. Mohrs salt
c. Glaubers salt
D. Microcosmic salt
| 1 |
Chemistry
|
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