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The expansion of an ideal gas of mass \( \mathrm{m} \) at a constant pressure \( \mathrm{P} \) is given by
the straight line B. Then, the expanasion of the same ideal gas of mass \( 2 \mathrm{m} \) at a
pressure \( 2 P \) is given by the straight line
A.
B. A
\( c \cdot B \)
D. data insufficient
| 3 |
Physics
|
A square is placed with its centre at origin and having sides parallel to \( x \) and
\( y- \) axes. It has surface charge density
\( \sigma(x, y)=\sigma_{0} x y \) within its boundaries.
The charge of each side of square is \( Q \)
The total charge on the square is:
A \( \cdot 2 \sigma_{0} Q^{2} \)
в. \( 4 \sigma_{0} Q^{3} \)
c. \( \sigma_{0} Q^{2} \)
D. zero
| 3 |
Physics
|
I ne rectangular wıre trame, shown In
the figure has a width d, mass \( m \)
resistance \( R \) and a large length. \( A \) uniform magnetic field B exists to the left of the frame. A constant force \( F \)
starts pushing the frame into the
magnetic field at \( t=0 \)
(a)Find the acceleration of the frame
when its speed has increased to
(b how that after some time the frame
will move with a constant velocity till the whole frame enters into the
magnetic field. Find the velocity \( v_{0} \)
(c) Show that the velocity at time t is given byv \( =\boldsymbol{v}_{0}\left(\mathbf{1}-\boldsymbol{e}^{\frac{-F t}{m v_{0}}}\right) \)
\[
\begin{array}{ll}
x & x \\
x & x \\
x & x \\
x & x \\
x & x
\end{array}
\]
| 3 |
Physics
|
The ratio of number of lone pairs in
\( N H_{3}, H_{2} O \) and \( X e F_{2} \) is :
A .3: 2: 1
B. 2: 1: 3
\( \mathrm{c} \cdot 1: 2: 3 \)
D. 2: 3: 1
| 1 |
Chemistry
|
Assertion
Assertion: Liquids \( I F_{5} \) conducts
electricity
Reason
Reason: Liquid \( I F_{5} \) self ionizes as,
\( 2 I F_{5} \rightleftharpoons I F_{4}^{+}+I F_{6}^{-} \)
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
|
PAHs can break down by reacting with sunlight and other chemicals in the air over a period of days to weeks.
A. True
B. False
| 1 |
Chemistry
|
The weight of a body at the centre of the earth is
A. zero
B. Equal to its mass
c. Maximum
D. Infinite
| 3 |
Physics
|
Distinguish between 'intrinsic' and
extrinsic' semiconductors.
| 3 |
Physics
|
R.Q. is more than one in which of the
following case?
A. Fat
B. Fructose
c. Glucose
D. organic acid
| 0 |
Biology
|
toppr
Q Type your question_
\( \mathbf{A} \)
\( B \)
\( c \)
\( (c) \)
\( D \)
| 3 |
Physics
|
Predict if the solutions of the following salts are neutral, acidic or basic.
\( N a C l, K B r, N a C N, N H_{4} N O_{3}, N a \)
and \( \boldsymbol{K} \boldsymbol{F} \)
| 1 |
Chemistry
|
\( P \) is a point in the interior of \( a \)
parallelogram \( A B C D . \) Show that
\( \boldsymbol{a r}(\triangle \boldsymbol{A P B})+\boldsymbol{a r}(\triangle \boldsymbol{P C D})= \)
\( \frac{1}{2} a r(A B C D) \)
| 2 |
Maths
|
Teritary alcohol is obtained as major
product in
\( \mathbf{A} \cdot\left(C H_{3}\right)_{2} C H-C H=C H_{2}^{\text {oxymercution/demercution}} \)
\( \mathbf{B} \cdot\left(C H_{3}\right)_{3} C-C H=C H_{2} \stackrel{d i l H_{2} S O_{4}}{\longrightarrow} \)
\( \mathbf{C} \cdot\left(C H_{3}\right)_{2} C H-C H=C H_{2}^{H y d r o b o r a t i o n, O x i d a t i o n} \)
D. All of the above
| 1 |
Chemistry
|
An electric dipole of moment \( \vec{p} \) is placed normal to the lines of force of electric intensity \( \vec{E} \), then work done in
deflecting it through an angle of \( 180^{\circ} \) is:
A \( . p E \)
в. \( +2 p E \)
c. \( -2 p E \)
D. zero
| 3 |
Physics
|
0.0833 moles of the carbohydrate contain 1.0 g hydrogen. If the molecular
formula of the carbohydrate is \( C_{x} H_{y} O_{z} \) then the value of \( x, y \) and \( z \) are :
A. \( x=6, y=12, z=6 \)
в. \( x=4, y=8, z=4 \)
c. \( x=5, y=10, z=6 \)
D. none of these
| 1 |
Chemistry
|
Write electronic configurations of the Sodium.
| 1 |
Chemistry
|
Two liquids of specific heat ratio 1: 2
are at temperature \( 2 \theta \) and \( \theta \)
This question has multiple correct options
A. if equal amounts of them are mixed, then temperature of mixture is 1.56
B. if equal amounts of them are mixed,then temperature is \( \frac{4}{3} \theta \)
C. for their equal amounts, the ratio of heat capacities is 1: 1
D. For their equal amounts, the ratio of their heat capacities is 1: 2
| 3 |
Physics
|
Compound formed by \( s p^{3} d^{-} \) hybridization will have which of the following structure?
A. Trigonal bipyramidal
B. T-shaped
c. Linear
D. Either of these depending on the number of lone pair of electrons on central atom
| 1 |
Chemistry
|
A particle executing SHM has a
maximum speed of \( 30 \mathrm{cm} s^{-1} \) and a
maximum acceleration of \( 60 \mathrm{cms}^{-2} \). The
period of oscillation is:
A . \( \pi \)
в. \( \frac{\pi}{2} s \)
c. \( 2 \pi \)
D. \( \frac{2 \pi}{15} \)
| 3 |
Physics
|
Assertion
Millon's test is a test for identification
of proteins.
Reason Millon's reagent is a solution of mercurous nitrate and mercuric nitrate
in nitric acid containing little nitrous
acid.
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
|
Statement 1: Substances with hydrogen
bonding tend to have unusually low boiling points. Statement 2: Extra energy is necessary to break the hydrogen bonds.
A. Statement 1 and Statement 2 are correct and Statement 2 is the correct explanation of Statement 1
B. Both the Statement 1 and Statement 2 are correct, but Statement 2 is not the correct explanation of Statement 1.
c. statement 1 is correct, but statement 2 is not correct
D. Statement 1 is not correct, but Statement 2 is correct
| 1 |
Chemistry
|
Plants exchange water with environment through structures by two cells
A . Lenticles
B. Hydathodes
c. Stomata
D. All the above
| 0 |
Biology
|
Assertion
In Rutherford's gold leaf experiment, most of the \( \alpha \) particles passed through the foil
Reason
The entire positive charge and nearly all of the mass of an atom is concentrated
in the nucleus
A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
c. Assertion is correct but Reason is incorrect
D. Both Assertion and Reason are incorrect
| 3 |
Physics
|
A class has three teachers Mr. X, Ms. Y
and Mrs. Z and six students
\( A, B, C, D, E, F . \) Number of ways in
which they can be seated in a line of 9
chairs, If bwteen any two teachers there are exactly two students, is
A. \( 18(6 !) \)
в. \( 12(6 !) \)
c. \( 24(6 !) \)
D. \( 6(6 !) \)
| 2 |
Maths
|
A freely falling body converts:
A. kinetic energy into potential energy
B. potential energy into kinetic energy
C. chemical energy into kinetic energy
D. potential energy into chemical energy
| 3 |
Physics
|
\( P \) is any point inside the triangle \( A B C \)
Hence \( \angle B P C>\angle B A C \)
A. True
B. False
c. Ambiguous
D. Data insufficient
| 2 |
Maths
|
A metallic calorimeter of mass 100 g
contains 200 g of ice and the initial temperature of the calorimeter and the
ice is \( -10^{\circ} \mathrm{C} . \) Heat is supplied to the system containing calorimeter and ice
at a constant rate of 50 cals\( ^{-1} \). Find the
time required to raise the temperature
of the system to \( 50^{\circ} \mathrm{C} \). [Neglect the loss of heat to the surroundings]. Take specific heat capacity of calorimeter and ice as \( 0.2 c a l g^{-1 \circ} C^{-1} \) and \( \frac{1}{2} c a l g^{-1 \circ} C^{-1} \).Take latent heat of
fusion of ice as \( 80 \mathrm{calg}^{-1} \) and specific
heat capacity of water as 1 calg\( ^{-1 \circ} C^{-1} \)
| 3 |
Physics
|
Assertion
Ultrasonic waves are longitudinal
waves of frequency greater than 20,000 \( \mathrm{Hz} \)
Reason
The maximum frequency of audible sound waves is \( 20,000 \mathrm{Hz} \)
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
|
When water is added to \( H_{2} S O_{4}, \) the
reaction is exothermic. It is because of
formation of:
A. viscous nature of \( H_{2} S O_{4} \)
B. hydrates of \( H_{2} S O_{4} \)
c. corrosive nature of \( H_{2} S O_{4} \)
D. none of the above
| 1 |
Chemistry
|
Os Innominatum consist of
A. Pubis
B. Ischium
c. llium
D. All of the above
| 0 |
Biology
|
Which of the following factors affects
friction?
A. Nature of the surface
B. Weight of object placed over other
C. Amount of surface area in contact between the moving bodies
D. Both A and B
| 3 |
Physics
|
Two waves having same velocity enter electric and magnetic fields
respectively. If \( \lambda_{1} \) and \( \lambda_{2} \) are
their wavelengths as they move in the
fields, then
A \( \cdot \lambda_{1}, \lambda_{2} \) are constants
B. \( \lambda_{1} \) and \( \lambda_{2} \) are variable
c. \( \lambda_{1} \) is variable \( \lambda_{2} \) is constant
D. \( \lambda_{2} \) is variable, \( \lambda_{1} \) is constant
| 3 |
Physics
|
Prove that \( \frac{\sin x-\sin 3 x}{\sin ^{2} x-\cos ^{2} x}=2 \sin x \)
| 2 |
Maths
|
Number of lone pairs of electrons on Xe
atoms \( \mathrm{XeF}_{2}, \mathrm{XeF}_{4} \) and \( \mathrm{XeF}_{6} \)
molecules are respectively.
A. 3,2 and 1
B. 4,3 and 2
c. 2,3 and 1
D. 3,2 and 0
| 1 |
Chemistry
|
If the amplitude of waves at a distance
\( 10 \mathrm{cm} \) from a point source is \( A, \) the
amplitude at a distance \( 40 \mathrm{cm} \) will be
A. \( A / 2 \)
в. \( A / 4 \)
\( c . A \)
D. \( 2 A \)
| 3 |
Physics
|
If \( \sin ^{-1} x=\frac{\pi}{5}, \) for some \( x \in(-1,1) \)
then find the value of \( \cos ^{-1} x \)
A. \( -\frac{3 \pi}{10} \)
в. \( \frac{3 \pi}{10} \)
c. \( -\frac{7 \pi}{10} \)
D. \( \frac{7 \pi}{10} \)
| 2 |
Maths
|
\( \cot B=2 \tan (A-B)=>2 \tan B+ \)
\( \cot B \) is equal to
\( \mathbf{A} \cdot \tan A \)
B. \( \cot A \)
\( c \cdot 2 \tan A \)
D. \( 2 \cot A \)
| 2 |
Maths
|
A quantity of \( 1 g \) of metallic carbonate
\( X C O_{3} \) is completely converted into a
chloride. \( \boldsymbol{X} \boldsymbol{C l}_{2} \) weighing \( 1.11 g \). The
atomic mass of the element ' \( \boldsymbol{X}^{\prime} \) is
A . 10
B. 20
c. 30
D. 40
| 1 |
Chemistry
|
A planoconvex lens fits exactly into a planoconcave lens. Their plane surface are parallel to each other. If the lenses are made of different materials of
refractive indices \( \mu_{1} \) and \( \mu_{2} \) and \( R \) is
the radius of curvature of the curved
surface of the lenses, then focal length of combination is
A \( \cdot \frac{R}{\mu_{1}-\mu_{2}} \)
В. \( \frac{2 R}{\mu_{1}-\mu_{2}} \)
c. \( \frac{R}{2\left(\mu_{1}-\mu_{2}\right)} \)
D. \( \frac{R}{2-\left(\mu_{1}-\mu_{2}\right)} \)
| 3 |
Physics
|
State the following statement is True or False
Arithmetic mean of first five natural
numbers is 3
A . True
B. False
| 2 |
Maths
|
The pH of blood stream is maintained
by a proper balance of \( \boldsymbol{H}_{2} \boldsymbol{C O}_{3} \) and
\( N a H C O_{3} \) concentrations. What
volume of \( 5 M N a H C O_{3} \) solution
should be mixed with a \( 10 m L \) sample
of blood which is \( 2 M \) in \( H_{2} C O_{3} \) in
blood is \( 7.8 \times 10^{-7} ? \)
| 1 |
Chemistry
|
Find the least number which must be
added to the following number so as to get a perfect square:
6412
A .52
в. 149
\( c .63 \)
D. 112
| 2 |
Maths
|
What do you mean by noble metals?
| 1 |
Chemistry
|
\( \int \frac{1}{\left(x^{6}-1\right)} d x \)
A \( \cdot 1 / 2\left(\frac{1}{6} \ln \frac{(x-1)^{2}}{x^{2}+x+1}-\frac{1}{\sqrt{3}} \arctan \frac{2 x+1}{\sqrt{3}}-\frac{1}{6} \ln \frac{(x+1)^{2}}{x^{2}-x+1}-\right. \)
\( \left.\quad \frac{1}{\sqrt{3}} \arctan \frac{2 x-1}{\sqrt{3}}\right)+\mathrm{k} \)
B \( \cdot \)
\[
\begin{array}{l}\text { C } \mid / 2\left(\frac{1}{6} \ln \frac{(x+1)^{2}}{x^{2}-x+1}-\frac{1}{\sqrt{3}} \arctan \frac{2 x-1}{\sqrt{3}}-\frac{1}{6} \ln \frac{(x-1)^{2}}{x^{2}+x+1}-\right. \\ \left.\frac{1}{\sqrt{3}} \arctan \frac{2 x+1}{\sqrt{3}}\right)+\mathrm{k}\end{array}
\]
C \( \cdot 1 / 2\left(\frac{1}{6} \ln \frac{(x-1)^{2}}{x^{2}+x+1}-\frac{1}{\sqrt{3}} \operatorname{arccot} \frac{2 x+1}{\sqrt{3}}+\frac{1}{6} \ln \frac{(x+1)^{2}}{x^{2}-x+1}+\right. \)
\( \left.\frac{1}{\sqrt{3}} \operatorname{arccot} \frac{2 x-1}{\sqrt{3}}\right)+\mathrm{k} \)
D \( \cdot 1 / 2\left(\frac{1}{6} \ln \frac{(x-1)^{2}}{x^{2}+x+1}-\frac{1}{\sqrt{3}} \operatorname{arccot} \frac{2 x+1}{\sqrt{3}}-\frac{1}{6} \ln \frac{(x+1)^{2}}{x^{2}-x+1}-\right. \)
\( \left.\frac{1}{\sqrt{3}} \operatorname{arccot} \frac{2 x-1}{\sqrt{3}}\right)+\mathrm{k} \)
| 2 |
Maths
|
Fill in the blanks with suitable word:
All green plants are
| 0 |
Biology
|
The A.M. between two positive numbers
exceeds the GM by \( 5, \) and Gm exceed
the H.M. by 4. Then the numbers are
A .10,40
B. 10,20
c. 20,40
D. 10,50
| 2 |
Maths
|
A mass of \( 10 \mathrm{kg} \) is suspended vertically by a rope from the roof. when a horizontal force is applied on the rope at same points, the rope deviated at an
angle of \( 45^{0} \) at the roof point. if the
suspended mass is at equilibrium, the
magnitude of the force applied is \( (g= \)
\( \left.10 m s^{-2}\right) \)
A . 200 N
B. 100 N
c. 70
D. 140 N
| 3 |
Physics
|
An object is placed \( 50 \mathrm{cm} \) from a screen
as shown.
A converging lens is moved such that
line \( M N \) is its principal axis. Sharp
images are formed on the screen in two
positions of lens separated by \( 30 \mathrm{cm} \) Find the focal length of the lens in \( \mathrm{cm} \)
| 3 |
Physics
|
Answer the following question in one
word or one sentence or as per exact
requirement of the question. If \( \boldsymbol{f}(\boldsymbol{x})=|\boldsymbol{x}|+|\boldsymbol{x}-\mathbf{1}|, \) write the value of
\( \frac{\boldsymbol{d}}{\boldsymbol{d} \boldsymbol{x}}(\boldsymbol{f}(\boldsymbol{x})) \)
| 2 |
Maths
|
A bubble rises from the bottom of a lake,
90m deep. On reaching the surface, its volume becomes(take atmospheric pressure equals to \( 10 \mathrm{m} \) of water
A. 4 times
B. 8 times
c. 10 times
D. 3 times
| 3 |
Physics
|
If \( n \) is a positive integer and \( (5 \sqrt{5}+ \)
\( \mathbf{1 1})^{2 n+1}=I+f \) where I is an integer
and \( 0<f<1 \) then
This question has multiple correct options
A. I is an even integer
B. \( (I+f)^{2} \) is divisible by \( 2^{2 n+1} \)
c. lis divisible by 22
D. None of these
| 2 |
Maths
|
Why acquired characters are not
inherited?
A. Acquired characters do not produce change in the DNA of germ cells.
B. Acquired characters produce change in the DNA of germ cells.
C. Acquired characters do not produce change in the DNA of somatic cells.
D. All of the above.
| 0 |
Biology
|
Which type of relation does a fungus has with alga in lichens?
A. Epiphytic
B. Parasitic
c. symbiotic
D. Saprophytic
| 0 |
Biology
|
Photosynthesis (nourishment in light) was discovered by
A. Stephan Hales
B. Priestley
c. Ingenhousz
D. Van Mayer
| 0 |
Biology
|
Water is not used as a barometric
liquid because
A. it is difficult to have a barometer tube 11 m long
B. water vaporises under vacuum conditions
c. water sticks to the side of glass tube.
D. all the above
| 3 |
Physics
|
A random variable \( X \) has the following
probability distribution:
\[
\begin{array}{cccccc}
\boldsymbol{X} & \mathbf{1} & \mathbf{2} & \mathbf{3} & \mathbf{4} & \mathbf{5} \\
\hline P(X) & k^{2} & 2 k & k & 2 k & 5
\end{array}
\]
\[
5 k^{2}
\]
Then \( P(X>2) \) is equal to
\( \mathbf{A} \cdot \frac{1}{6} \)
B. \( \frac{7}{12} \)
c. \( \frac{1}{36} \)
D. \( \frac{23}{36} \)
| 2 |
Maths
|
A solenoid of length \( 0.4 m \) and diameter
\( 0.6 m \) consists of a single layer of 1000
turns of fine wire carrying a current of
\( \mathbf{5} \times \mathbf{1 0}^{-\mathbf{3}} \) A. Calculate the magnetic
field on the axis at the middle and at
the end of the solenoid:
A \( \cdot 8.7 \times 10^{-6} T, 6.28 \times 10^{-6} T \)
B . \( 6.28 \times 10^{-6} T, 8.7 \times 10^{-6} T \)
D. \( 8.7 \times 10^{-6} T, 8.28 \times 10^{-6} T \)
| 3 |
Physics
|
The cut part of sphere is coated outside with silver or similar material. What
kind of mirror does it form?
A. Convex mirror
B. Concave mirror
c. Plane mirror
D. None
| 3 |
Physics
|
A single wave is called
A. a wave pulse
B. a crest
c. a trough
D. a crest and a trough
| 3 |
Physics
|
Solve:
\( \int \frac{x^{2}+1}{x^{2}-4 x+6} d x \)
| 2 |
Maths
|
In Millikan's oil drop experiment, the charge of three oil drops \( X, Y, \) and \( Z \) have been found to be 2,0.04 and 0.8 respectively. What could be the probable charge of an electron and the number of electrons attached to these
oil drops?
A. \( 0.04 \mathrm{C}, 50,1,20 \)
B. \( 0.04 \mathrm{C}, 50,2,20 \)
c. \( 0.8 c, \) २०, 15, 50
D. 0.8, 1, 50, 23
| 1 |
Chemistry
|
Choose the correct answers from the
alternatives given. An example of selectively permeable membrane is
A. Plasmalemma
B. Cell wall
c. chloroplast membrane
D. Mitochondrial membrane
| 0 |
Biology
|
Spring wood (early wood) differs with autumn wood (late wood) in
A. Size of vessels and tracheids
B. Thickness of cell wall
c. Amount of wood
D. All the above
| 0 |
Biology
|
A narrow monochromatic beam of light
of intensity \( I \) is incident on a glass plate as shown in figure. Another identical glass plate is kept close to the first one and parallel to it. Each glass plate reflects \( 25 \% \) of the light incident on it and transmits the remaining. Find the ratio \( \sqrt{\frac{\boldsymbol{I}_{m a x}}{\boldsymbol{I}_{m i n}}} \) the interference
pattern formed by two beams obtained after one reflection at each plate.
| 3 |
Physics
|
Which scientist is most famous for his
work on the quantum physics along side with Albert Einstein?
A. Meghnad Saha
B. S.S. Abhyankar
c. Satyendra Nath Bose
D. Vikram Sarabhai
| 3 |
Physics
|
What is photophosphorylation? Distinguish between cyclic and noncyclic photophosphorylation. Give schematic sketches of both.
| 0 |
Biology
|
\( \frac{k}{k} \)
| 3 |
Physics
|
The cork cambium, cork and secondary
cortex are collectively called as
A. Phellem
B. Phelloderm
c. Phellogen
D. Periderm
| 0 |
Biology
|
If \( \vec{a} \) and \( \vec{b} \) are two unit vectors such that \( \vec{a}+2 \vec{b} \) and \( 5 \vec{a}-4 \vec{b} \) are perpendicular
to each other then the angle between \( \vec{a} \) and \( \vec{b} \) is
A . 45
B. \( 60^{\circ} \)
\( ^{\mathbf{c}} \cdot \cos ^{-1}\left(\frac{1}{3}\right) \)
D. \( \cos ^{-1}\left(\frac{2}{7}\right) \)
| 2 |
Maths
|
A step-up transformer works on \( 220 \mathrm{V} \) and gives 2 A to an external resistor. The
ratio of the number of turns between the
primary and secondary coils is 2: 25 Assuming \( 100 \% \) efficiency, find the secondary voltage, primary current and power delivered
A . 2750 \( \vee, \) 25 \( A, 5500 W \)
B. 2750 V, 20 A, 5000 W
c. 2570 V, 25 A, 550
D. 2750 V, 20 A, 55 W
| 3 |
Physics
|
What is the side product of soap industry?
A. Sodium Hydroxide
B. Esters
c. Ethanol
D. Glycerol
| 1 |
Chemistry
|
To measure
This question has multiple correct options
A. you will measure the potential drop across resistor till it is minimum on varying frequency
B. you will measure the voltage across \( L \) and \( C \) at various frequencies until \( V_{L}=V_{D} \)
C. you will measure the voltage across L and C at various frequencies until \( V_{L}=V_{C} \)
D. you will measure voltage across L until is minimum at a particular frequency
| 3 |
Physics
|
An ionic compound is a poor conductor
of electricity because:
A. ions do not conduct electricity
B. charge on the ions is uniformly distributed
C. ions occupy fixed positions in solids
D. ions have uniform field
| 1 |
Chemistry
|
Which of the following side chain reaction/s can be used to reduce the
activity of strongly activating groups like \( O H ? \)
A. Benzoylation
B. Acetylation
c. both A and B
D. none of the above
| 1 |
Chemistry
|
\( C O_{2} \) acceptor in \( C_{3} \) plants is
A. Xylulose-5-phosphate
B. 3-phosphoglyceric acid
c. Ribulose 1,5 -biphosphate
D. Phosphoenol pyruvic acid
| 0 |
Biology
|
Give the oxidation state of underlined.
\( N H 4 N O_{3} \)
| 1 |
Chemistry
|
Choose the correct answer from the
alternatives given
Closing of stomata are induced by:
A. axing
B. boxing
c. abscise acid
D. indole 3-acetic acid
| 0 |
Biology
|
A mechanical machine which is used to
lift or compress large loads.
A. hydraulic press
B. hydraulic lifts
c. hydraulic brakes
D. none
| 3 |
Physics
|
In racemic mixtures \( D \) -forms do not
exist.
A. True
B. False
| 1 |
Chemistry
|
When a transverse plane wave traverses a medium, individual particles execute periodic motion given by the equation \( \boldsymbol{y}=\mathbf{0 . 2 5} \cos (\mathbf{2} \boldsymbol{\pi} \boldsymbol{t}-\boldsymbol{\pi} \boldsymbol{x}) . \) The phase
difference for two position of same particle which are occupied by time intervals 0.4 second apart is
| 3 |
Physics
|
A charged \( 30 \mu \mathrm{F} \) capacitor is connected
to a \( 27 \mathrm{mH} \) inductor. What is the
angular frequency of free oscillations of the circuit?
| 3 |
Physics
|
The velocity-time graph for a body with non-uniform motion (assume non-
constant acceleration) is a:
A. straight line making some angle with the positive \( x \) axis.
B. straight line parallel to x-axis.
c. straight line parallel to y-axis
D. curved line
| 3 |
Physics
|
\( f f(x)=\left\{\begin{array}{ll}\frac{x-|x|}{x}, & x \neq 0 \\ 2, & x=0\end{array} \) show \right.
that \( \lim f(x) \) does not exist
| 2 |
Maths
|
Fill up the blanks.
When \( _{6} C^{14} \) isotope undergoes \( \beta \) -decay the resulting new element is
| 3 |
Physics
|
A radioactive nucleus has specific
binding energy' \( E_{1} \) '. It emits an \( \alpha \) particle. The resulting nucleus has
specific binding energy' \( E_{2} \) '. Then
A \( \cdot E_{2}=E_{1} \)
в. \( E_{2}<E_{1} \)
c. \( E_{2}>E_{1} \)
D. \( E_{2}=0 \)
| 3 |
Physics
|
Find \( \boldsymbol{x}+\boldsymbol{y}+\boldsymbol{z} \)
A \( \cdot x+y+z=180 \)
в. \( x+y+z=360^{\circ} \)
c. \( x+y+z=480^{\circ} \)
D. \( x+y+z=540 \)
| 2 |
Maths
|
Which is polymeric hydride?
A. \( C a H_{2} \)
в. \( M g H_{2} \)
\( \mathbf{c} \cdot B a H_{2} \)
D. \( \operatorname{SrH}_{2} \)
| 1 |
Chemistry
|
the net displacement and distance
travelled by the bolt, with respect to earth. (Take \( \left.g=9.8 m / s^{2}\right) \)
| 3 |
Physics
|
The ringing of an electric bell in an enclosed evacuated glass bell jar is not heard outside because
| 3 |
Physics
|
Solve: \( \boldsymbol{y}^{\prime}=\frac{\mathbf{3} \boldsymbol{x}-\boldsymbol{y}}{\boldsymbol{x}+\boldsymbol{y}} \)
\( \mathbf{A} \cdot(3 x+y)(x-y)=c_{0} \)
B \( \cdot(3 x-y)(x+y)=c_{0} \)
\( \mathbf{c} \cdot(x-3 y)(3 x+y)=c_{0} \)
\( \mathbf{D} \cdot(x+3 y)(x-y)=c_{0} \)
| 2 |
Maths
|
A paper weight is dropped from the roof of a block of multistorey flats, each storey being 3 meters high. It passes the ceiling of the \( 20^{t h} \) storey at \( 30 m / s \)
If \( g=10 m / s^{2}, \) how many storey
does the flat have?
A . 25
B. 30
c. 35
D. 40
| 3 |
Physics
|
Explain cumene process for the preparation of phenol or How would you prepare phenol from cumene?
| 1 |
Chemistry
|
The \( r m s \) value of conduction current
will be:
\( \mathbf{A} \cdot 5.7 \mu A \)
в. \( 6.3 \mu A \)
\( \mathrm{c} .9 .6 \mu A \)
D. \( 6.9 \mu A \)
| 3 |
Physics
|
The value of \( \lim _{x \rightarrow \infty}\left(x \sin \left(\frac{3}{x}\right)\right) \)
| 2 |
Maths
|
\( (\overline{\mathbf{A}}+\overline{\mathbf{B}}) \times(\overline{\mathbf{A}}-\overline{\mathbf{B}}) \) is:
A \( \cdot\left(\bar{A}^{2}-\bar{B}^{2}\right) \)
в. \( 2 \overline{\mathrm{AB}} \)
c. \( 2(\overline{\mathrm{A}} \times \overline{\mathrm{B}}) \)
D. \( 2(\overline{\mathrm{B}} \times \overline{\mathrm{A}}) \)
| 3 |
Physics
|
The dimensions of \( \frac{\alpha}{\beta} \) in the equation \( \boldsymbol{F}=\frac{\boldsymbol{\alpha}-\boldsymbol{t}^{2}}{\beta \boldsymbol{v}^{2}}, \) where \( \boldsymbol{F} \) is force, \( \boldsymbol{v} \) is
velocity and \( t \) is time, is :
\( \mathbf{A} \cdot\left[M L T^{-1}\right] \)
B . \( \left[M L^{-1} T^{-2}\right] \)
\( \mathbf{c} \cdot\left[M L^{3} T^{-4}\right] \)
\( \mathbf{D} \cdot\left[M L^{2} T^{-4}\right] \)
| 3 |
Physics
|
There are three elements \( \mathrm{E}, \mathrm{F}, \mathrm{G} \) with
atomic number 19,8 and 17
respectively.Give molecular formula of the compound formed between \( \mathrm{E} \) and \( \mathrm{G} \)
| 1 |
Chemistry
|
Which of the following is valid name for Gramineae family?
A. Poaceae
B. Malvaceae
c. Fabaceae
D. Papilionaceae
| 0 |
Biology
|
A certain buffer solution contains equal
concentration of \( \boldsymbol{X}^{-} \) and \( \boldsymbol{H} \boldsymbol{X} . \) The \( \boldsymbol{K}_{\boldsymbol{b}} \)
for \( X^{-} \) is \( 10^{-10} . \) The \( p H \) of the buffer is:
A . 4
B. 7
c. 10
D. 14
| 1 |
Chemistry
|
A graph is plotted between the potential difference (applied across the ends of a conductor) and the current (following through the conductor). The graph is a straight line
A. having intercepts on both axes
B. having an intercept on the X-axis
c. having an intercept on the Y-axis
D. none of these
| 3 |
Physics
|
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