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Complete the following statements with an appropriate word / term to be filled in the blank space(s).
Magnetic fields are produced by
A. Currents
B. Charges
c. capaciatnce
D. Inductance
| 3 |
Physics
|
Describe the bulk preparation of dihydrogen by electrolytic method. What
is the role of an electrolyte in this
process?
| 1 |
Chemistry
|
Incorrect statement in the following
A. Glomerulus is a group of fine blood capillaries
B. Loop of Henle is a part of malpighian body
C. Jatropa is the source of bio-diesel
D. Symptoms of uremia is swelling of feet
| 0 |
Biology
|
A constant torque of \( 50 \mathrm{N} \mathrm{m} \) is needed
to keep a wheel moving at a constant angular speed of 20 rads/s. The amount of work performed by this torque in 5 minutes
B. 100 KJ
c. 300 KJ
D. 30 KJ
| 3 |
Physics
|
What are hot spots?
A. Molten rock in the earths crust is pushed upward and trapped in certain regions
B. Solid rock in the earths crust is pushed upward and trapped in certain regions
C. Molten rock in the earths crust is pushed downward and trapped in certain regions
D. Solid rock in the earths crust is trapped in certain regions
| 3 |
Physics
|
Dry seeds when placed in water swell up
due to
A. Imbibition
B. Absorption
c. Diffusion
D. Adsorption
| 0 |
Biology
|
The electric field on two sides of a large charged plate is shown in Fig. The charge density on the plate in Sl units is
given by \( \left(\varepsilon_{0} \) is the permittivity of free \right. space in Sl units):
A \( .2 \varepsilon_{0} \)
в. \( 4 \varepsilon_{0} \)
c. \( 10 \varepsilon_{0} \)
D. zero
| 3 |
Physics
|
If \( \boldsymbol{A}=\{\boldsymbol{m}, \boldsymbol{a}, \boldsymbol{t}, \boldsymbol{h}, \boldsymbol{e}, \boldsymbol{m}, \boldsymbol{a}, \boldsymbol{t}, \boldsymbol{i}, \boldsymbol{c}, \boldsymbol{s}\}, \boldsymbol{B}= \)
\( \{a, m, t, h, e, i, c, s\}, \) then:
A \( . A=B \)
в. \( A \neq B \)
c. \( A \subset B \)
D. \( B \subset A \)
| 2 |
Maths
|
The valency of mercurous ion is :
A . two
B. one
\( c . \) three
D. four
| 1 |
Chemistry
|
A force is a result of:
A. interaction between two bodies
B. interaction of one body with itself
C. friction
D. all of the above
| 3 |
Physics
|
Statement \( 1:-273^{0} C \) is also known as
absolute zero.
Statement 2: \( ^{0} C=K+273 \)
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 and 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
E. Both the Statement 1 and Statement 2 are not correct
| 1 |
Chemistry
|
In column chromatography, the moving phase is?
A. The substances which are to be separated
B. Eluent
c. Adsorbent
D. Mixture of eluent and substances to be separated
| 1 |
Chemistry
|
Oil is converted into fat by using as a catalyst.
A . Ni
B. Fe
\( c . \) мп
D. \( V_{2} O_{5} \)
| 1 |
Chemistry
|
Assertion: The standard potential of
\( \boldsymbol{C l}^{\ominus}|\boldsymbol{A} \boldsymbol{g} \boldsymbol{C l}| \boldsymbol{A} \boldsymbol{g} \) half cell is related to that
of \( \boldsymbol{A} \boldsymbol{g}^{\ominus} \mid \boldsymbol{A} \boldsymbol{g} \)
Reason:
\( \boldsymbol{E}_{\boldsymbol{A} \boldsymbol{g}^{\ominus} \mid \boldsymbol{A} \boldsymbol{g}}^{\ominus}=\boldsymbol{E}_{C l^{\ominus}|A \boldsymbol{g} C l| \boldsymbol{A} \boldsymbol{g}}^{\ominus}+\frac{\boldsymbol{R} \boldsymbol{T}}{\boldsymbol{F}} \ln \boldsymbol{K}_{s p} \)
\( (A g C \mid) \)
A. Both Assertion and Reason are true and Reason is the correct explanation of Assertion
B. Both Assertion and Reason are true but Reason is not the correct explanation of Assertion
c. Assertion is true but Reason is false
D. Assertion is false but Reason is true
E. Both Assertion and Reason are false
| 1 |
Chemistry
|
The magnetic field normal to the plane
of a wire of \( n \) turns and radius \( r \) which
carries a current i is measured on the
axis of the coil at a small distance \( h \)
from the centre of the coil. This is
smaller than the magnetic field at the
centre by the fraction
\( \mathbf{A} \cdot(2 / 3) r^{2} / h^{2} \)
B. \( (3 / 2) r^{2} / h^{2} \)
c. \( (2 / 3) h^{2} / r^{2} \)
D. \( (3 / 2) h^{2} / r^{2} \)
| 3 |
Physics
|
State whether the given statement is true or false:
A pair of linear equations is given by \( \boldsymbol{a}_{1} \boldsymbol{x}+\boldsymbol{b}_{1} \boldsymbol{y}+\boldsymbol{c}_{1}=\boldsymbol{0} \) and \( \boldsymbol{a}_{2} \boldsymbol{x}+\boldsymbol{b}_{2} \boldsymbol{y}+ \)
\( c_{2}=0 \) and \( \frac{a_{1}}{a_{2}}=\frac{b_{1}}{b_{2}}=\frac{c_{1}}{c_{2}} \)
In this case, the pair of linear equations is consistent.
A. True
B. False
| 2 |
Maths
|
If unit vectors \( \hat{\boldsymbol{i}} \& \hat{\boldsymbol{j}} \) are at right angles to each other and \( \overrightarrow{\boldsymbol{p}}=\mathbf{3} \hat{\boldsymbol{i}}+\boldsymbol{4} \hat{\boldsymbol{j}}, \overrightarrow{\boldsymbol{q}}= \)
\( \mathbf{5} \hat{\mathbf{i}}, \mathbf{4} \overrightarrow{\boldsymbol{r}}=\overrightarrow{\boldsymbol{p}}+\overrightarrow{\boldsymbol{q}} \) and \( \mathbf{2} \overrightarrow{\boldsymbol{s}}=\overrightarrow{\boldsymbol{p}}-\overrightarrow{\boldsymbol{q}} \) then
This question has multiple correct options
A \( \cdot|\vec{r}+k \vec{s}|=|\vec{r}-k \vec{s}| \) for all real \( \mathrm{k} \)
B. \( \vec{r} \) is perpendicular to \( \vec{s} \)
c. \( \vec{r}+\vec{s} \) is perpendicular to \( \vec{r}-\vec{s} \)
D・|\vec| = |\vec| = | \( \vec{p}|=| \vec{q} \)
| 2 |
Maths
|
The pH of the solution obtained on
neutralisation of \( 40 m L \) of \( 0.1 M \)
NaOH with 40 m \( L \) of \( 0.1 M \)
\( \boldsymbol{C H}_{3} \boldsymbol{C O O H} \) is:
\( A \cdot 7 \)
B. 8
\( c \cdot 4 \)
D.
| 1 |
Chemistry
|
Which of these metals do not corrode?
A. Lead
B. copper
C. Platinum
D. Silver
| 1 |
Chemistry
|
Name the gas that is produced in the following cases.
At the anode during the electrolysis of acidified water
| 1 |
Chemistry
|
A simple closed curve made up of only line segments is called a
A . Curve
B. Polygon
c. surface
D. concave
| 2 |
Maths
|
In which stage of meiosis, homologous chromosomes are segregated
A. Metaphase I
B. Anaphase I
c. Anaphse II
D. Metaphase II
| 0 |
Biology
|
If the roots of the equation \( x^{2}-2 a x+ \)
\( a^{2}+a-3=0 \) are real and less than 3
then
A \( . a<2 \)
в. \( 2 \leq a \leq 3 \)
c. \( 3<a \leq 4 \)
D. \( a>4 \)
| 2 |
Maths
|
The wavelength of maximum intensity
of emission of solar radiation is \( \lambda_{m}= \)
\( 4753 A^{\circ} \) and from moon it is \( 14 \mu \mathrm{mm} \)
The surface temperature of sun and
moon are \( \left(\operatorname{given} b=2.898 \times 10^{-3}\right. \)
meter-kelvin)
A. 6097 К. 207К
в. 8097 К, зот к
c. 10000 К, \( 400 \mathrm{k} \)
D. 3000 К, 100 к
| 3 |
Physics
|
Two cell of emf \( 6 V \) and \( 4 V \) having
internal resistance \( 3 \Omega \) and \( 2 \Omega \)
respectively are connected in parallel so
all to send a current through extend
resistance of \( 8 \Omega \) in the same direction.
Find the current through the cells and
the potential difference across \( 8 \Omega \)
Resistor.
| 3 |
Physics
|
Which of the following statement is
incorrect?
A. Glycogen is the carbohydrate resource in human and animals
B. Cellulose makes the cells walls of the plants
C. Sucrose is the polysaccharides known as invert sugar
D. Homopolysaccharides are made up of one type of monosaccharides
| 1 |
Chemistry
|
A \( 100 m H \) coil carries \( 1 A \) current.
Energy stored in its magnetic field is.
A. 0.15
J \( 5.1 .5 . \)
B. \( 0.05 J \)
\( c .0 .5 J \)
D. \( 1 . \)
| 3 |
Physics
|
What is the molality of a solution containing \( 200 m g \) of urea (molar mass
\( 60 g m o l^{-1} \) ) dissolved in \( 40 g \) of water?
A . 0.0833
B. 0.825
c. 0.498
D. 0.0013
| 1 |
Chemistry
|
\( \boldsymbol{A} \rightleftharpoons \mathbf{2} \boldsymbol{B}, \boldsymbol{K}_{\boldsymbol{p}} \) and \( \boldsymbol{C} \rightleftharpoons \boldsymbol{D}+\boldsymbol{E}, \boldsymbol{K}_{\boldsymbol{p}^{*}}^{\prime} \) If
degrees of dissociation of \( A \) and \( C \) are
same and \( K_{p}=2 K_{p}^{\prime}, \) then the ratio of total pressure \( \frac{\boldsymbol{p}}{\boldsymbol{p}^{\prime}} \) is:
A. \( 1 / 2 \)
B. \( 1 / 3 \)
c. \( 1 / 4 \)
D. 2
| 1 |
Chemistry
|
What will happen if chemical fertilizers are used for a longer time.
A. soil always stays fertile for plant growth
B. soil fertility is damaged
c. soil stops responding to fertilizers
D. soil health is maintained
| 1 |
Chemistry
|
Active mass of eight grams of oxygen at
STP is
| 1 |
Chemistry
|
In the given figure \( A B \| C D \). find the
value of \( x \) and \( y \)
A \( \cdot x=35^{\circ}, y=65^{\circ} \)
B . \( x=95^{\circ}, y=65^{\circ} \)
C . \( x=85^{\circ}, y=65^{\circ} \)
D. \( x=25^{\circ}, y=65 \)
| 2 |
Maths
|
Name the other ion formed when
ammonia dissolves in water
| 1 |
Chemistry
|
Measure of \( \angle A \) in \( \Delta A B C \) is
\( A \cdot 90^{\circ} \)
В. \( 99.3^{\circ} \)
\( c \cdot 100.3^{\circ} \)
\( 800.7^{\circ} \)
| 2 |
Maths
|
Point out the wrong statement about
proteins.
A. They are nitrogenous organic compounds of high molecular mass.
B. They on hydrolysis by enzymes give aminoacids.
C. Many of them are enzymes.
D. They do not contain polypeptide.
| 1 |
Chemistry
|
In the nuclear reaction, there is a
conservation of
A. momentum
B. mass
c. energy
D. all of these
| 3 |
Physics
|
Highly electrical conducting behaviour
is present in anhydrous \( H_{2} S O_{4} \) due to autoprotolysis.
If true enter 1 , else enter 0 .
| 1 |
Chemistry
|
Solve \( \int \frac{1}{\sqrt{9-25 x^{2}}} d x \)
A. \( \frac{1}{5} \sin ^{-1}\left(\frac{5 x}{3}\right)+C \)
B \( \cdot \sin ^{-1}\left(\frac{5 x}{3}\right)+C \)
c. \( \frac{1}{5} \sin ^{-1}\left(\frac{3 x}{5}\right)+C \)
D. \( \sin ^{-1}\left(\frac{3 x}{5}\right)+C \)
| 2 |
Maths
|
If \( \boldsymbol{x}+\boldsymbol{y}=\boldsymbol{x}^{\boldsymbol{y}} \) then \( \frac{\boldsymbol{d} \boldsymbol{y}}{\boldsymbol{d} \boldsymbol{x}} \boldsymbol{e q u a l s -} \)
A \( \frac{y x^{y-1}-1}{1-x^{y} \log x} \)
В. \( \frac{y x^{y-1}-1}{x^{y} \log x-1} \)
c. \( \frac{y x^{y-1}+1}{x^{y} \log x+1} \)
D. None of these
| 2 |
Maths
|
(iii) Which class of drugs is used in sleeping pills?
A. tranquilizers
B. Antacid
c. Disprine
D. Paracetamol
| 1 |
Chemistry
|
Match list 1 with list 2
List 1
A) Aspirin
p) Non-narcotic
q) Acts against gram-positive and
B) Ofloracin \( \quad \) gram-negative bacteria
C) Penicillin G antibiotic
r) Narrow spectrum
D) Ibuprofen
s) Broad spectrum antibiotic
t) Anti inflammatory drug
\( A \cdot a-p, b-s, c-r, d-t \)
B. \( a-r, b-p, c-q, d-t \)
c. \( a-s, b-s, c-r, d-p \)
D. a-p,b-s,c-t,d-r
| 1 |
Chemistry
|
Draw V-I characteristics of a p-n junction diode. Answer the following questions, giving reasons:
(i) Why is the current under reverse bias almost independent of the applied upto a critical voltage?
(ii) Why does the reverse current show a sudden increase at the critical voltage?
Name any semiconductor device which operates under the reverse bias in the
breakdown regions
| 3 |
Physics
|
Show that in case of one-dimensional
elastic collision of two bodies, the relative
velocity of separation after the collision
is equal to the relative velocity of approach before the collision.
| 3 |
Physics
|
For bacteria to continue growing rapidly when they are shifted from an
environment containing \( \boldsymbol{O}_{2} \) to an
anaerobic environment, they must
A. Produce more ATP per mole of glucose during glycolysis
B. Produce ATP during oxidation of glucose
c. Increase the rate of glycolysis
D. Increase the rate of TCA cycle
| 0 |
Biology
|
The spring shown in figure is
unstretched when a man starts pulling
the block. The mass of the block is \( M . \) If
the man exerts a constant force \( \boldsymbol{F} \)
The energy stored in the spring when the block passes through the
equilibrium position is
\( ^{A} \cdot \frac{2 F^{2}}{k} \)
B. \( \frac{F^{2}}{k} \)
\( ^{\mathbf{c}} \cdot \frac{F^{2}}{4 k} \)
D. \( \frac{F^{2}}{2 k} \)
| 3 |
Physics
|
An object of mass \( \mathrm{m} \) is allowed to fall from rest along a rough inclined plane. The speed of the object on reaching the bottom of the plane is proportional to?
\( \mathbf{A} \cdot m^{0} \)
B. \( m \)
\( c \cdot m^{2} \)
D. \( m^{-1} \)
| 3 |
Physics
|
Evaluate: \( \lim _{x \rightarrow 1} \frac{1-x^{\frac{-1}{3}}}{1-x^{\frac{-2}{3}}} \)
| 2 |
Maths
|
Which of the following oxides is
neutral?
A. \( C O \)
в. \( S n O_{2} \)
\( c \cdot Z n O \)
D. \( \operatorname{si} O_{2} \)
| 1 |
Chemistry
|
Concentrated nitric acid dissolves gold.
If true then enter 1 , if false then enter 0 .
| 1 |
Chemistry
|
The process "translation" means
A. DNA synthesis
B. RNA synthesis
c. Protein synthesis
D. Ribosome assembly
| 0 |
Biology
|
Which of the following names represents the foul smelling, black, thick, viscous liquid obtained from destructive distillation of coal?
A. coke
B. Coal tar
c. coal gas
D. None of these
| 1 |
Chemistry
|
Say true or false:
The service tax is an indirect tax.
A . True
B. False
| 2 |
Maths
|
High reactivity of white phosphorus is
due to:
A. unusual bonding that produces considerable strain
B. high solubility in water
c. oxide layer made on it
D. all of the above
| 1 |
Chemistry
|
For the equilibrium reaction
\( \boldsymbol{C a} \boldsymbol{C O}_{3}(\boldsymbol{s}) \rightleftharpoons \boldsymbol{C a O}(\boldsymbol{s})+\boldsymbol{C O}_{2}(\boldsymbol{g}) . \) The
addition of more \( C a C O_{3}(s) \) causes?
A. The decrease in the concentration of \( C O_{2}(g) \)
B. The increase in the concentration of \( C O_{2}(g) \)
C. No change in the concentration of \( C O_{2}(g) \)
D. Increase in the concentration of \( C a O(s) \)
| 1 |
Chemistry
|
A current of \( 2 A \) is flowing through a
circular coil of radius \( 10 \mathrm{cm} \) containing 100 turns. The magnetic flux density at the centre of the coil is \( \left(\operatorname{in} W b / m^{2}\right) \)
В. \( 1.26 \times 10^{-2} \)
c. \( 1.26 \times 10^{-4} \)
D. \( 1.26 \times 10^{-5} \)
| 3 |
Physics
|
In ammonia molecule
covalent bond formation takes place between nitrogen and hydrogen.
| 1 |
Chemistry
|
If the symmetry is such that you can find a surface on which the electric field
is constant, then evaluating the electric flux can be done by
A. dividing the value of the field by the area of the Gaussian surface.
B. multiplying the value of the field times the area of the Gaussian surface
c. multiplying the square of the value of the field times the area of the Gaussian surface.
D. dividing the square of the value of the field times the area of the Gaussian surface
| 3 |
Physics
|
Conduction is:
A. the process of transfer of heat which does not require any material medium
B. the process of transferring heat from molecule to molecule, without the actual movement of molecules
C. the process in which molecules conduct heat by moving from hotter regions to colder regions
D. the process in which heat energy moves through the medium of protons
| 3 |
Physics
|
Which of the following complexes will show optical isomerism?
A \( \cdot\left[C r\left(N H_{3}\right)_{6}\right]^{2+} \)
B . \( \left[N i\left(H_{2} O\right)_{6}\right]^{2+} \)
c. \( \left[P t\left(N H_{3}\right)_{3} B r\right] N O_{3} \)
D. \( \left[C r(e n)_{3}\right] C l_{3} \)
| 1 |
Chemistry
|
State with the reason whether the given
figures are optically active or not
| 1 |
Chemistry
|
Choose the correct answers from the
alternatives given Water and minerals that cross the
cortex through the symplast move
A. Extracellularly along the matrix of cell walls
B. From cell to cell through plasmodesmata
c. By active transport
D. By pressure flow
| 0 |
Biology
|
The type of egg in cockroach is called as
A. Microlecithal
B. Centrolecithal
c. Isolecithal
D. Telolecithal
| 0 |
Biology
|
If air is taken as a binary solution, the
solvent is:
\( A \cdot N_{2} \)
B. \( 0_{2} \)
\( c \cdot c O_{2} \)
D. Ar
| 1 |
Chemistry
|
A wooden piece is balanced by a brass weight in a sensitive balance. Now the
pan contained by wooden piece is covered by a bell jar and then evacuated;
A. the pan containing the wooden piece will go up
B. the pan containing the wooden piece will go down
c. the beam will remain horizontal
D. nothing can be said definitely
| 3 |
Physics
|
Find the mean deviation about the
mean for the data in
\( \begin{array}{lllll}x_{i} & 10 & 30 & 50 & 70\end{array} \) \( \mathbf{9 0} \)
\( f_{i} \quad 4 \quad 24 \quad 28 \quad 16 \)
| 2 |
Maths
|
AB is a line segment \( C \) and \( D \) are points on opposite sides of \( A B \) such that each
of them is equidistant from the point \( \mathbf{A} \)
and \( \mathrm{B} \) as in the figure. The line \( \mathrm{CD} \) is
perpendicular bisector of \( \mathrm{AB} \)
A. True
B. False
| 2 |
Maths
|
S.I unit of intensity of sound is
A \cdot joule \( s^{-1} m^{-2} \)
B. watt \( m^{-2} \)
c. joule/s/m \( ^{2} \)
D. all
| 3 |
Physics
|
A beam of protons is deflected sideways. could this deflections be caused
a.) By an electric field
b) by a magnetic field
c.) if either could be responsible how would you be able to tell which was
present
| 3 |
Physics
|
Which of the following condition even if satisfied, does not make the two
triangles congruent?
A. S.S.S ( side-side-side)
B. A.A.A (angle-angle-angle)
c. s.A.S (side-angle-side)
D. A.S.A (angle-side-angle)
| 2 |
Maths
|
Solve each of the following equations and check your answers: \( \boldsymbol{x}-\mathbf{3}=\mathbf{5} \)
| 2 |
Maths
|
Chloroethane, \( C_{2} H_{5} C l, \) does not react with methanol under mild conditions.
What reagent could be added to the reaction mixture to increase the rate of
substitution?
A. \( H C l \) (conc.)
в. \( N a O H \)
c. \( N H_{4} O H \)
D. \( A g N O_{3} \)
| 1 |
Chemistry
|
If \( \cos \left(65^{0}-A\right) \cos \left(25^{0}+B\right)- \)
\( \sin \left(65^{0}-A\right) \sin \left(25^{0}+B\right)=\sin (m+ \)
\( A-B) \).Find \( m \)
| 2 |
Maths
|
Solve: \( \lim _{x \rightarrow 2} \frac{\left(1-3^{x}-4^{x}+12^{x}\right)}{\sqrt{(2 \cos x+7)}-} \)
| 2 |
Maths
|
In the given figure, \( \boldsymbol{A B} \| \boldsymbol{C D}, \angle \boldsymbol{A B E}= \)
\( 120^{\circ}, \angle E C D=100^{\circ} \) and \( \angle B E C=x^{o} \)
Find the value of \( x \)
| 2 |
Maths
|
If \( ^{16} C_{r}=^{16} C_{r+1}, \) then the value of \( ^{r} P_{r-3} \)
is
\( A \cdot 31 \)
в. 120
c. 210
D. 840
E. No option is correct
| 2 |
Maths
|
A plane \( \pi \) makes intercept 3 and 4
respectively on z-axis and x-axis. If \( \pi \) is
parallel to y-axis, then its equation is
A. \( 3 x+4 z=12 \)
B. \( 3 z+4 x=12 \)
c. \( 3 y+4 z=12 \)
D. \( 3 z+4 y=12 \)
| 2 |
Maths
|
Poisson's ratio cannot exceed
A . 0.25
B. 1.0
c. 0.75
D. 0.5
| 3 |
Physics
|
The essential distinction between \( X \)
rays and \( \gamma \) -rays is that the \( \gamma \) -rays:
A. have greater ionizing power than \( x \) -rays
B. emanate from nucleus, white X-rays emanate from outer part of the atom
C. have smaller wave-length than X-rays
D. none of the above
| 3 |
Physics
|
State the working principle of potentiometer explain with the help of circuit diagram. How the emf of two primary cells are compared by using the potentiometer
| 3 |
Physics
|
The product of the digits of a two-digit number is twice as large as the sum of
its digits. If we subtract 27 from the required number, we get a number consisting of the same digits written in the reverse order. Find the number.
| 2 |
Maths
|
A plano-convex lens has thickness \( 4 \mathrm{cm} \) When placed on a horizontal table with the curved surface in contact with it,
the apparent depth of the bottom-most point of the lens is found to be \( 3 \mathrm{cm} \). If the lens is inverted such that the plane face is in contact with the table, the
apparent depth of the centre of the
plane face of the lens is found to be \( 25 / 8 \mathrm{cm} . \) Find the focal length of the lens
| 3 |
Physics
|
Check whether the following pair of statements is negation of each other. Give reasons for the answer
(i) \( x+y=y+x \) is true for every real
numbers \( \boldsymbol{x} \) and \( \boldsymbol{y} \)
(ii) There exists real number \( x \) and \( y \) for
which \( \boldsymbol{x}+\boldsymbol{y}=\boldsymbol{y}+\boldsymbol{x} \)
| 2 |
Maths
|
Among \( \boldsymbol{C H}_{4}, \boldsymbol{N H}_{3} \) and \( \boldsymbol{H}_{2} \boldsymbol{O}, \) acidity of
\( H_{2} O \) is maximum because:
A. Oxygen contains two lone pairs of electrons.
B. Bond angle on \( H_{2} O \) is less than \( 109^{\circ} 28^{\prime} \) due to \( V S E P R \)
c. oxygen is more electronegative than \( C \) or \( N \).
D. \( H_{2} O \) is an associated liquid.
| 1 |
Chemistry
|
Shanti, a domestic helper of Mrs. Anuradha, fainted while mopping the
floor. Mrs. Anuradha immediately took her to the nearby hospital where she was diagnosed to be severely 'anaemic'. The doctor prescribed an iron rich diet and multivitamins supplement to her.
Mr.s Anuradha supported her financially to get the medicines. After a month, Shanti was diagnosed to be normal.
(i) What values are displayed by Mrs. Anuradha?
(ii) Name the vitamin whose deficiency causes 'pernicious anaemia!
(iii) Give an example of a water soluble vitamin
| 1 |
Chemistry
|
Find the refractive index of glass with respect to water. The refractive indices of these with respect to air are \( 3 / 2 \) and \( 4 / 3 \) respectively
A \( .2 / 1 \)
в. \( 1 / 2 \)
c. \( 9 / 8 \)
D. \( 8 / 9 \)
| 3 |
Physics
|
The dissociation constant of a
substituted benzoic acid at \( 25 \mathrm{C} \) is
\( 1.05 \times 10^{-4} . \) The pH of \( 0.01 \mathrm{M} \) solution
of its sodium salt is.
\( A \cdot 8 \)
B. 6
\( c \cdot 5 \)
D. 4
| 1 |
Chemistry
|
In what ratio does the plane \( 2 x+y- \)
\( z=3 \) divide line segment joining the
point \( \boldsymbol{a}=(\mathbf{2}, \mathbf{1}, \mathbf{3}), \boldsymbol{b}=(\mathbf{9},-\mathbf{2}, \mathbf{5}) \)
| 2 |
Maths
|
How many parents were involved in cloning and production of Dolly?
A .2
B.
\( c \cdot 3 \)
\( D \)
| 0 |
Biology
|
If \( \lambda_{m} \) denotes the wavelength at which the radioactive emission from a black
body at a temperature \( T K \) is maximum then:
A. \( \lambda \) is independent of \( T \)
в. \( \lambda_{m} \propto T \)
\( \mathbf{c} \cdot \lambda_{m} \propto T^{-1} \)
D. \( \lambda_{m} \propto T^{-4} \)
| 3 |
Physics
|
The organic acid present in vinegar is :
A. methanoic acid
B. ethanoic acid
c. propanoic acid
D. none of these
| 1 |
Chemistry
|
Let \( A \) and \( B \) be two sets such that \( A \times \)
\( B \) consists of 6 elements.lf three
elements of \( \boldsymbol{A} \times \boldsymbol{B} \) are
\( \{(1,4),(2,6),(3,6)\} . \) Find \( A \times B \) and
\( \boldsymbol{B} \times \boldsymbol{A} \)
| 2 |
Maths
|
If \( f(x)=x \sin x, \) then \( f^{\prime}\left(\frac{\pi}{2}\right) \) is equal
to:
A.
B.
c. -1
D.
| 2 |
Maths
|
Scientific name of sunn hemp is
A. Crotalaria juncea
B. Erythrina indica
c. Arachis hypogea
D. Glycine max
E. Dalbergia sisso
| 0 |
Biology
|
Define the unit of self inductance.
| 3 |
Physics
|
What will be the product of the given
reaction?
| 1 |
Chemistry
|
The \( V-I \) graph of a conductor at two
different temperatures is shown in Fig. The ratio of temperature \( \frac{T_{1}}{T_{2}} \) is :
A \( \cdot \tan ^{2} \theta \)
B \( \cdot \cot ^{2} \theta \)
\( \mathbf{c} \cdot \sec ^{2} \theta \)
\( \mathrm{D} \cdot \operatorname{cosec}^{2} \theta \)
| 3 |
Physics
|
Geochemistry is:
A. The study of the chemical composition and changes in organisms
B. The study of the chemical composition and changes in rocks, minerals, and atmosphere of the earth or a celestial body.
C. The study of the chemical composition and changes in plants
D. None of the above
| 1 |
Chemistry
|
Brown,black and gold is the color band on the resistor,find its resistance?
A \( \cdot 10 \times 10^{-2} \Omega \)
B. 1\Omega
c. \( 100 \Omega \)
D. \( 10 \times 10^{0} \Omega \)
| 3 |
Physics
|
The moon's radius is \( 1 / 4 \) times that of the earth and its mass \( 1 / 80 \) times that
of the earth. If \( g \) represents the acceleration due to gravity on the surface of the earth, then on the surface
of the moon its value is :
\( \mathbf{A} \cdot g / 4 \)
в. \( g / 5 \)
c. \( g / 6 \)
D. \( g / 8 \)
| 3 |
Physics
|
Assertion
In its rest position the clapper is held away from the bell a short distance by
its springy arm.
Reason
The spring constant of spring must be such that clapper should be able to give
reaction to the magnetic force of
attraction upto a certain extent
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
|
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