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The binding energy per nucleon for the
parent nucleus is \( \mathrm{E}_{1} \) and that for the
daughter nuclei is \( \mathrm{E}_{2} \). Then
A \( \cdot \mathrm{E}_{2}=2 \mathrm{E}_{1} \)
в. \( \mathrm{E}_{1}>\mathrm{E}_{2} \)
c. \( \mathrm{E}_{2}>\mathrm{E}_{1} \)
D. \( \mathrm{E}_{1}=2 \mathrm{E}_{2} \) | 3 | Physics |
The power of plane mirror is
\( \mathbf{A} \cdot \mathbf{0} \)
B . \( \infty \)
\( c .2 D \)
D. \( 4 D \) | 3 | Physics |
\( M g^{2+} \) and \( C l^{-} \) are required during
transfer of electron from
A \( \cdot O H^{-} \) to \( C h l \) orophyll \( -a_{683} \)
B. \( O H^{-} \) to \( P_{700} \)
c. \( F D \) to \( F R S \)
D. Cytochrome \( -b \) to cytochrome \( -f \) | 0 | Biology |
What is common about Trypanosoma,
Noctiluca, Monocystis and Giardia?
A. These are all parasites
B. These are all unicellular protists
c. They have flagella
D. They produce spores | 0 | Biology |
Which of the following properties generally decreases along a period?
A. Ionisation energy
B. Electron affinity
c. Metallic character
D. valency | 1 | Chemistry |
Phenanthrene is a fused polycyclic compound containing benzene rings.
A. two
B. three
c. four
D. five | 1 | Chemistry |
If the centre \( O \) of circle is the
intersection of \( x- \) axis and line \( y= \) \( \frac{4}{3} x+4, \) and the point (3,8) lies on
circle, then the equation of circle will be
A \( \cdot x^{2}+y^{2}=25 \)
B - \( (x+3)^{2}+y^{2}=25 \)
c. \( (x+3)^{2}+y^{2}=100 \)
D. \( (x+3)^{2}+(y-8)^{2}=100 \) | 2 | Maths |
The chances of defective screws in three
boxes \( A, B \) and \( C \) are \( \frac{1}{5}, \frac{1}{6}, \frac{1}{7} \) respectively. A box is selected at
random and a screw drawn from it at
random, is found to be defective.
The probability that it came from the
box'A' is
A \( \cdot \frac{16}{29} \)
B. \( \frac{1}{15} \)
c. \( \frac{27}{59} \)
D. \( \frac{42}{107} \) | 2 | Maths |
How many terms of the \( \mathrm{AP} 27,24,21, \ldots \)
should be taken so that their sum is 0 | 2 | Maths |
The diagram summarises the pathway of glucose break down.
Hexose
Triose phosphate
\( 6 \mathrm{C} \) compound
\[
\mathrm{H}_{2} \mathrm{O}+\mathrm{CO}_{2}
\] | 0 | Biology |
State whether the statement is True or
False.
\( (4+5 x)(4-5 x) \) is equal to \( 16-25 x^{2} \)
A. True
B. False | 2 | Maths |
How many \( S-O-S \) linkages are
there in dithionous acid? | 1 | Chemistry |
Q Type your question_
statement regarding this -
A. When agricultural fields are sprayed with DDT, it is carried by runoff water into nearby aquatic bodies
B. River water may have a very low concentration of DDT,
but the concentration of DDT, which is still suitable for
consumption by human beings
C. Increased concentration of DDT in birds affects
calcium metabolism due to which egg shells become thin and break before maturity
D. None of these | 0 | Biology |
Determine the current through zener
diode for the circuit shown in figure is:
(Given: zener diode break down voltage
\( \left.V_{z}=5.6 V\right) \)
\( \mathbf{A} \cdot 7 m A \)
В. \( 17 m A \)
c. \( 10 m A \)
D. \( 15 \mathrm{mA} \) | 3 | Physics |
Which of the following is incorrect about polysaccharides?
I. These are amorphous solids.
II. These are sparingly soluble in water.
III. These are sugars
A . Only III
B. Il and II
c. I and III
D. All of the above | 1 | Chemistry |
Find the derivative of \( f(x) \) from the first
principle. \( \sin x \div \cos x \) | 2 | Maths |
State and explain work energy principle. Mention any three examples for it. | 3 | Physics |
Large intestine in man mainly carries
out
A. Absorption of water
B. Assimilation
c. Digestion of fats
D. Digestion of carbohydrates | 0 | Biology |
Consider the following statements:
1. \( 1^{\circ} \) in radian measure is less than
0.02 radians.
2. 1 radian in degree measure is
greater than \( 45^{\circ} \)
Which of the above statements
is/are correct?
A. 1 only
B. 2 only
c. Both 1 and 2
D. Neither 1 nor 2 | 2 | Maths |
When \( 20 g F e_{2} O \) is reacted with \( 50 g \) of
\( \boldsymbol{H} \boldsymbol{C l}, \boldsymbol{F e} \boldsymbol{C l}_{3} \) and \( \boldsymbol{H}_{2} \boldsymbol{O} \) are formed. The
amount of unreacted \( \boldsymbol{H} \boldsymbol{C l} \) is \( (\boldsymbol{F e}=\mathbf{5 6}) \)
A. \( 27.375 g \)
в. \( 22.625 g \)
c. \( 30 g \)
D. \( 4.75 g \) | 1 | Chemistry |
Which of the following types of water is not in its free state?
A . River water
B. Well water
c. Distilled water
D. Rain water | 1 | Chemistry |
Does pure water conduct electricity?
A. Yes
B. No
c. Sometimes
D. None of above | 1 | Chemistry |
The percentage of gold present in 20 carat gold is
A . 100
B. 73.86
c. 50
D. 83.33 | 2 | Maths |
Name the mode of reproduction that ensures the creation of new variants. | 0 | Biology |
Find the common difference in the
following pattern:
(a) 4,7,10,13
(b) 5,9,13,17,21,25 | 2 | Maths |
Differentiate \( \sin ^{2} x \) w. \( r . \) t. \( e^{\cos x} \) | 2 | Maths |
Calculate resonant frequency and \( Q \)
factor of a series L-C-R circuit
containing a pure inductor of inductance \( 3 \mathrm{H} \), Capacitor of
capacitance \( 27 \mu F \) and resistor of resistance \( 7.4 \Omega \) | 3 | Physics |
Given, matrix \( \boldsymbol{A}=\left[\begin{array}{l}\mathbf{3} \\ \mathbf{2}\end{array}\right] \) and \( \boldsymbol{B}=\left[\begin{array}{l}-\mathbf{2} \\ -\mathbf{1}\end{array}\right] \)
find the matrix \( X \) such that \( X-A=B \)
\( A \cdot\left[\begin{array}{l}0 \\ 0\end{array}\right] \)
в. \( \left[\begin{array}{l}1 \\ 1\end{array}\right] \)
\( c \cdot\left[\begin{array}{l}4 \\ 0\end{array}\right] \)
D. \( \left[\begin{array}{l}1 \\ -1\end{array}\right. \) | 2 | Maths |
Which of the following is a medicine?
A. Arsphenamine
B. Heroin
c. Morphine
D. codeine | 1 | Chemistry |
Two points charges \( 4 \mu C \) and \( -2 \mu C \) are separated by a distance of \( 1 \mathrm{m} \) in air. \( \mathrm{At} \) what point in between the charges and on the line joining the charges, is the electric potential zero?
A. In the middle of the two charges
B. \( 1 / 3 m \) from \( 4 \mu C \)
c. \( 1 / 3 m \) from \( -2 \mu C \)
D. Nowhere the potential is zero | 3 | Physics |
n the figure, \( P Q=R S \) and \( \angle O R S= \)
\( 48^{\circ} \) Find \( \angle O P Q \) and \( \angle R O S \) | 2 | Maths |
The radius of hollow metallic sphere is \( r \) If the potential difference between its surface and a at a distance \( 3 r \) from its
centre is v then the electric field
intensity at a distance of \( 3 r \) its centre is:
A. v/2r
B. \( \vee / 3 \) r
c. \( \vee / 4 r \)
D. V/6 | 3 | Physics |
Which one of the following muscles is responsible for moving and shaking the skin?
A. Arrector pilli
B. Collagen fibres
c. Panniculus carnosus
D. sphincter muscles | 0 | Biology |
A metallic cylinder of diameter \( 5 \mathrm{cm} \) and height \( 3 \frac{1}{3} \mathrm{cm} \). is melted cast into a sphere. What is its diameter. | 2 | Maths |
Which era is considered as the age of
reptiles? | 0 | Biology |
If \( \boldsymbol{x}^{\mathbf{3}}-\boldsymbol{a} \boldsymbol{x}^{\mathbf{2}}+\boldsymbol{b} \boldsymbol{x}- \)
\( \boldsymbol{6} \) is exactly divisible by \( \boldsymbol{x}^{2}- \)
\( \mathbf{5 x + 6 . t h e n} \frac{a}{b} \) is
A. an integer
B. an irrational number
\( c \cdot \frac{6}{11} \)
D. | 2 | Maths |
Most of the fossils occur in the rocks as
A. Matamorphic
B. Igneous
c. sedimentary
D. All of the above | 3 | Physics |
Match the following.
A. Homeostasis
1) Insulin
B. Emergency hormone
2) Structure
of insulin
C. Metabolism
3) Adrenaline
D. Peptide hormones
4) Thyroxine
E. Pancreatic islets
5)
Maintenance of constant internal
environment
F. Sanger
6) Affect
the properties of Plasma membrane
\( A \cdot A-1 ; B-5 ; C-3 ; D-4 ; E-6 ; F-2 \)
B. \( A-2 ; B-4 ; C-3 ; D-1 ; E-6 ; F-2 \)
\( \mathrm{C} \cdot \mathrm{A}-3 ; \mathrm{B}-5 ; \mathrm{C}-3 ; \mathrm{D}-4 ; \mathrm{E}-6 ; \mathrm{F}-1 \)
D. \( A-5 ; B-3 ; C-4 ; D-1,6 ; E-1 ; F-2 \) | 1 | Chemistry |
An electric bulb of resistance \( 480 \Omega \) is
connected to \( 220 V . \) Find electric energy
consumed in \( 10 s \)
A . \( 1000 J \)
в. \( 9600 J \)
c. 1008.35
D. \( 1118.7 J \) | 3 | Physics |
Neutron was discovered by:
A. J.J. Thomson
B. Chadwick
c. Rutherford
D. Priestley | 1 | Chemistry |
How many vocal cords does a person have?
\( A \cdot 3 \)
B.
\( c \cdot 2 \)
\( D \) | 3 | Physics |
\( y=\left(\frac{2^{x+1}}{1+4^{x}}\right) \) Find \( \frac{d y}{d x} \) | 2 | Maths |
Evaluate the following:
\( \int \frac{1}{\sqrt{x^{2}+4 x+29}} d x \) | 2 | Maths |
Determine the horizontal component of
the earth's magnetic field at the
location. | 3 | Physics |
toppr
Q Type your question
\( N a, M g, A l \) and \( S i \) plotted
against their first ionisation energies?
\( A \)
B.
\( c \)
\( D \) | 1 | Chemistry |
What do you mean by power of accommodation of an eye? | 3 | Physics |
Assertion
When two long parallel wires, hanging freely are connected in series to a battery, they come closer to each other.
Reason
Wires carrying current in opposite direction repel each other.
A. Both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
B. Both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion
c. Assertion is correct but Reason is incorrect
D. Assertion is incorrect but Reason is correct | 3 | Physics |
Identify which of the following quantities is a scalar quantity?
A. displacement
B. mass
c. resultant
D. equilibrant
\( E \cdot 101 \mathrm{m} / \mathrm{s} \) at \( 30^{\circ} \) north of east | 3 | Physics |
The solubility of a solute with increase
of temperature when the dissolution is attended by absorption of heat:
A . decreases
B. remains same
c. may increase or decrease
D. increases | 1 | Chemistry |
Natural length of a massless spring (of spring constant \( k \) ) is \( x \). It is slowly stretched by applying an external force. What is the work done in slowly stretching it from length \( 3 x \) to \( 4 x ? \)
A \( .1 .5 k x^{2} \)
B. \( 2.5 k x^{2} \)
c. \( 3.5 k x^{2} \)
D. \( 4.5 \mathrm{kx}^{2} \) | 3 | Physics |
In how many ways we can select 5 cards
from a deck of 52 cards, if each selection must include atleast one king | 2 | Maths |
For the reaction
\( \mathbf{2} \boldsymbol{A}+\boldsymbol{B} \rightleftharpoons \mathbf{3} \boldsymbol{C} \) at \( \mathbf{2} \mathbf{9 8} \boldsymbol{K}, \boldsymbol{K}_{\boldsymbol{c}}=\mathbf{4 9} \)
A \( 3 L \) vessel contains 2,1 and 3 moles of
\( A, B \) and \( C \) respectively. The reaction at
the same temperature:
A. must proceed in forward direction
B. must proceed in backward direction
c. must be in equilibrium
D. cannot be predicted | 1 | Chemistry |
Why does the sky appears dark instead
of blue to astronauts? | 3 | Physics |
The two particle \( A \) and \( B \) have de Broglie wavelengths 1 nm and 5 nm respectively. If mass of \( A \) is 4 times that of mass of \( B \)
the ratio of KE of \( A \) and \( B \) would be:
A . 5:
B. 25: 4
\( c \cdot 20: 1 \)
D. 5: 4 | 1 | Chemistry |
Some substances and their uses are
given in the table. Match them suitably.
Substance
Antacids Pesticide
Benedict's solution \( \quad \) To test glucose
Thermosetting \( \quad \) To give blue colour to Plastics
cobalt toxide
Tobacco extract \( \quad \) To reduce acidity | 1 | Chemistry |
\( 5^{t h} \) term from the end in the expansion
of \( \left(\frac{x^{2}}{2}-\frac{2}{x^{2}}\right)^{12} \) is
B . \( 7920 x^{4} \)
c. \( 7920 x^{-4} \)
D. \( -7920 x^{4} \) | 2 | Maths |
The oxidation state of Fe in browns ring
complex \( \left[\mathrm{Fe}\left(\mathrm{H}_{2} \mathrm{O}\right)_{5} \mathrm{NO}^{+}\right] \mathrm{SO}_{4} \) is:
\( A \cdot+1 \)
\( B \cdot+2 \)
\( c \cdot+3 \)
\( D \cdot+4 \) | 1 | Chemistry |
A potentiometer wire has length \( 4 \mathrm{m} \) and resistance \( 8 \Omega . \) The resistance that
must be connected in series with the
wire and an accumulator of e.m.f \( 2 \mathrm{V}, \) so as to get a potential gradient \( 1 \mathrm{mV} \) per \( \mathrm{cm} \) on the wire is
A . \( 44 \Omega \)
B. \( 48 \Omega \)
\( c .32 \Omega \)
D. \( 40 \Omega \) | 3 | Physics |
A lake with an inflow of domestic
sewage rich in organic waste may result in:
A. Drying of the lake very soon due to algal bloom.
B. An increased production of fish due to lot of nutrients
c. Death of fish due to lack of oxygen.
D. Increased population of aquatic food web organisms. | 0 | Biology |
Edaphology is connected with
A. Plant and biosphere
B. Soil and living microorganisms
C. Animals and ecosystem
D. Soil and biosphere | 0 | Biology |
Which statements is true in case of
catalyst?
This question has multiple correct options
A. The catalyst is unchanged chemically at the end of a reaction.
B. The catalyst accelerated the reaction.
C. In a reversible reaction, the catalyst alters the equilibrium position.
D. A small amount of catalyst is often sufficient to bring about a large change in reaction. | 1 | Chemistry |
Draw a line segment of 6cm and divide it in the ratio 3: 2 | 2 | Maths |
Select the correct sequence of light entering the different parts of human
eye
A. Cornea, lens, iris, pupil, retina
B. Pupil, cornea, iris, lens, retina
c. cornea, pupil, iris, lens, retina
D. Cornea, iris, pupil, , lens, retina | 3 | Physics |
A current of 1 A through a coil of inductance of \( 200 \mathrm{mH} \) is increasing at
a rate of \( 0.5 \mathrm{A} s^{-1} \). The energy stored in
the inductor per second is then
A. 0.5 J \( s^{-1} \)
B. 5.0 Js \( ^{-1} \)
c. \( 0.1 \mathrm{Js}^{-1} \)
D. 2.0 Js \( ^{-1} \) | 3 | Physics |
What is the enthalpy of vaporisation of
liquid water in \( k J \) mol \( ^{-1} \) if:
\( (\mathrm{i}) \boldsymbol{H}_{2}(\boldsymbol{g})+\frac{1}{2} \boldsymbol{O}_{2}(\boldsymbol{g}) \longrightarrow \boldsymbol{H}_{2} \boldsymbol{O}(l)+ \)
\( 285.77 k J m o l^{-1} \)
\( (\text { ii }) \boldsymbol{H}_{2}(\boldsymbol{g})+\frac{1}{2} \boldsymbol{O}_{2}(\boldsymbol{g}) \longrightarrow \boldsymbol{H}_{2} \boldsymbol{O}(\boldsymbol{v})+ \)
\( 241.84 k J \) mol \( ^{-1} \)
\( \mathbf{A} \cdot+43.93 \)
B . -43.93
c. +527.61
D. -527.61 | 1 | Chemistry |
A medicine-capsule is in the shape of a cylinder of diameter \( 0.5 \mathrm{cm} \) with two hemispheres stuck to each of its ends. The length of entire capsule is \( 2 \mathrm{cm} . \) The capacity of the capsule is
A \( \cdot 0.36 c m^{3} \)
в. \( 0.35 \mathrm{cm}^{3} \)
\( \mathrm{c} \cdot 0.34 \mathrm{cm}^{3} \)
D. \( 0.33 c m^{3} \) | 2 | Maths |
Consider the following equilibrium
\( A g C l \downarrow+2 N H_{3} \rightleftharpoons\left[A g\left(N H_{3}\right)_{2}\right]^{+}+ \)
\( \boldsymbol{C l}^{-} . \) White precipitate of of \( \boldsymbol{A} \boldsymbol{g} \boldsymbol{C l} \)
appears on which of the following?
A \( \cdot N H_{3} \)
B. Aqueous NaCl
c. Aqueous \( H N O_{3} \)
D. Aqueous \( N H_{4} C l \) | 1 | Chemistry |
Velocity versus time graph of a ball of mass \( 50 \mathrm{g} \) rolling on a concrete floor is shown in the figure. Calculate the acceleration
A . \( -10 m s^{-2} \)
B . \( -20 m s^{-2} \)
c. \( -30 m s^{-2} \)
D. \( -40 m s^{-2} \) | 3 | Physics |
Find the value of \( x^{3}+7 x^{2}-x+16 \)
when \( \boldsymbol{x}=\mathbf{1}+\mathbf{2} \boldsymbol{i} \)
\( \mathbf{A} \cdot-11+24 i \)
B . \( -17+24 i \)
c. \( -17-24 i \)
D. \( -1+24 i \) | 2 | Maths |
An electric field \( \overrightarrow{\boldsymbol{E}}=\mathbf{4} \boldsymbol{x} \hat{\boldsymbol{i}}-\left(\boldsymbol{y}^{2}+\right. \)
1) \( \hat{j} N / C \) passes through the box shown
in figure. The flux of the electric field
through surfaces \( A B C D \) and \( B C G F \)
are marked as \( \phi_{I} \) and \( \phi_{I I} \) respectively.
The difference between \( \left(\phi_{I}-\phi_{I I}\right) \) is \( ( \) in
\( \left.N m^{2} / C\right) \) | 3 | Physics |
In which of the following the bond angle
is maximum:
A \( . H_{2} O \)
в. \( H_{2} \).
\( c \cdot S O_{2} \)
D. \( S O_{3} \) | 1 | Chemistry |
What is the order of reactivity of hydrogen atoms attached to the carbon atom in an alkane for free radical
substitution?
\( \mathbf{A} \cdot 3^{\circ}>1^{\circ}>2^{\circ} \)
В . \( 2^{\circ}>1^{\circ}>3^{\circ} \)
c. \( 3^{\circ}>2^{\circ}>1^{\text {о }} \)
D. \( 1^{\circ}>2^{\circ}>3^{\circ} \) | 1 | Chemistry |
When propyne is treated with dilute sulphuric acid in presence of mercury
(II) sulphate, the major product is:
A. acetone
B. propene
c. propanol
D. propanal | 1 | Chemistry |
op
Q Type your question
direction. The number of turns is \( n \) and
the cross sectional area of the coil is \( A \)
When the coil turns through \( 180^{\circ} \) about
its diameter, the charge flowing through the coil is \( Q \). The total
resistance of the circuit is \( R \). What is
the magnitude of the magnetic
induction?
\( ^{A} \cdot \frac{Q R}{n A} \)
в. \( \frac{2 Q R}{n A} \)
c. \( \frac{Q n}{2 R A} \)
D. \( \frac{Q R}{2 n A} \) | 3 | Physics |
The resistance of \( \frac{1}{10} \mathrm{M} \) solution is \( 2.5 \times \) \( 10^{3} \) ohm. What is the molar conductivity
of solution? (cell constant= \( 1.25 \mathrm{cm}^{-1} \) )
A. 3.5 ohm \( ^{-1} c m^{2} \) mol \( ^{-} \)
B. 5.0 ohm \( ^{-1} c m^{2} \) mol \( ^{-} \)
c. 2.5 ohm\( ^{-1} \mathrm{cm}^{2} \) mol \( ^{-1} \)
D. 2.0 ohm \( ^{-1} \mathrm{cm}^{2} \) mol- | 1 | Chemistry |
Complete the following, so as to make a
true statement:
The number of pairs of opposite angles of a quadrilateral is | 2 | Maths |
In the extraction of copper, the smelt
formed in the blast furnace contains:
A. \( C u_{2} S+ \) little \( F e S \)
в. \( C u_{2} S+ \) little \( F e O \)
c. \( C u_{2} O+ \) little \( F e S \)
D. \( C u_{2} O+ \) little \( F e O \) | 1 | Chemistry |
Evaluate: \( \lim _{n \rightarrow \infty} \frac{1+3+5+\ldots . n t e r m s}{2+4+6+\ldots n t e r m s} \)
\( A \cdot 2 \)
в.
\( c \cdot 3 \)
D. | 2 | Maths |
What is the value of inductance \( L \) for
which the current flowing is maximum in a series LCR circuit with \( C=10 \mu F \)
and \( \omega=1000 s^{-1} ? \)
A. \( 100 m H \)
в. \( 1 m H \)
c. Cannot be calculated unless \( R \) is known
D. \( 10 m H \) | 3 | Physics |
Give reasons why copper is used to make hot water tanks and not steel (an
alloy of iron). | 1 | Chemistry |
If \( E_{F e^{2+} / F e}^{+} \) is \( x_{1}, E_{F e^{3+} / F e}^{+} \) is \( x_{2} \) then
what will be \( \boldsymbol{E}_{\boldsymbol{F} e^{+} / \boldsymbol{F} e^{2+}}^{\boldsymbol{?}} \) | 1 | Chemistry |
Calculalte R,when \( \boldsymbol{R}= \) \( \sqrt{A^{2}+B^{2}+2 A B \cos \theta} \) given that, \( A=6 \)
\( \mathrm{m}, \mathrm{B}=8 \mathrm{m} \) and angle is \( 60^{0} \) | 2 | Maths |
A closed bulb capacity 200ml
containing \( \boldsymbol{C H}_{4}, \boldsymbol{H}_{2} \) and He at \( 300 \mathrm{K} \)
The ratio of partial pressure of \( \boldsymbol{C} \boldsymbol{H}_{4}, \boldsymbol{H}_{2} \) and He, respectively is 2:3:5. Calculate
the ratio of their weights present in the container.
A. 2: 4: 6
B . 16: 8: 100
\( c \cdot 16: 3: 10 \)
D. 4:9:25 | 1 | Chemistry |
BOD is measure of.
A. Industrial waste being poured in water body
B. Extent of pollution with organic compounds
C. \( \mathrm{CO} \) combined with haemoglobin
D. \( O_{2} \) required by green plants during night | 0 | Biology |
Two charge are brought near then:
A. The P.E. of system of charge increases
B. The P.E. of system of charge decreases
C. The P.E. of system of charge may increases
D. The P.E. of system of charge remain constant | 3 | Physics |
The intensity of radiation emitted by to \( \operatorname{star} A A \) and \( B \) are in the ratio of 16: 1
The wavelength corresponding to their peak emission of radiation will be the ratio of :
A .2: 1
B . 4: 1
c. 1: 2
D. 16: 1 | 3 | Physics |
For hydrogen-oxygen fuel cell, the cell reaction is:
\( \mathbf{2} \boldsymbol{H}_{\mathbf{2}}(\boldsymbol{g})+\boldsymbol{O}_{2}(\boldsymbol{g}) \longrightarrow \mathbf{2} \boldsymbol{H}_{2} \boldsymbol{O}(\boldsymbol{l}) \)
If \( \Delta G_{f}^{o}\left(H_{2} O\right)=-237.2 k J m o l^{-1}, \) then
emf of this cell is:
A . \( +2.46 V \)
в. \( -2.46 V \)
c. \( +1.23 V \)
D. \( -1.23 V \) | 1 | Chemistry |
Identify the wrong combination.
A. Dryopteris - Rhizome
B. Cycas - Coralloid roots
c. Volvox - Colonial form
D. Marchantia - Pseudo elaters | 0 | Biology |
The line joining two points \( A(2,0) \) and
\( B(3,1) \) ir rotated about \( A \) about in the anticlock wise direction through an
angle of \( 15^{\circ} . \) The equation of the line in the new position is:
A \( . x-\sqrt{3} y-2=0 \)
В. \( x-2 y-2=0 \)
c. \( \sqrt{3} x-y-2 \sqrt{3}=0 \)
D. \( \sqrt{2} x-y-2 \sqrt{2}=0 \) | 2 | Maths |
A force \( \overrightarrow{\boldsymbol{F}}=(\mathbf{5} \hat{\boldsymbol{i}}+\boldsymbol{3} \hat{\boldsymbol{j}} 2 \hat{\boldsymbol{k}}) \boldsymbol{N} \quad \) is
applied over a partivle which displaces it from its origin to the point \( \vec{r}= \) \( (2 \hat{i}-\hat{j}) m . \) The work done on the particle in joules is then
A . -7
B. +7
\( c \cdot+10 \)
D. +13 | 3 | Physics |
A trust fund has Rs. 30,000 that must
be invested in two different type of bounds the fist bond pays \( 5 \% \) interest
per year and the second bond pays \( 7 \% \) interest per yer using matrix multiplication determine how to divide Rs.30,000 among the two type of bound if the trust fund must obtain an annual
total interest of
a)Rs.1800 | 2 | Maths |
A pure germanium crystal at absolute zero is:
A. An insulator.
B. A good conductor.
c. A semiconductor
D. None of the above | 3 | Physics |
Assertion
The solubility of ammonium chloride increases with increase in temperature
Reason In case of substances whose solubility increases with increase in temperature is due to the dissolution process being endothermic.
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 function of urea being produced as an excretory material in mammals and
sharks is that
A. It raises the pH level of the blood
B. It sends signals from cells that produce it to other organs
c. It provides energy to some cells and tissues
D. It prevents ammonia from building up in the body
E. It eliminates water from the bloodstream | 0 | Biology |
DNA replication occurs in which of the following stages?
A. \( G_{0} \) and \( G_{1} \)
B. \( G_{2} \) stage
c. s stage
D. Mitotic phase | 0 | Biology |
In the reaction
\[
\left(\boldsymbol{C H}_{3}\right)_{3} \boldsymbol{C}-\boldsymbol{O}-\boldsymbol{C H}_{2} \boldsymbol{C H}_{3}+
\]
\[
\begin{array}{c}
\boldsymbol{H I} \\
(\mathbf{1 m o l e})
\end{array}
\]
the product(s) formed is(are):
\( A \)
\[
\left(C H_{3}\right)_{3} C-O H \text { and } C H_{3} C H_{2} I
\]
в.
\[
\left(C H_{3}\right)_{3} C-I \text { and } C H_{3} C H_{2} O H
\]
c. \( \left(C H_{3}\right)_{3} C-I \) and \( C H_{3} C H_{2} I \)
D.
\[
\begin{array}{ccc}
C- & O^{+} & -C H_{2} C H_{3} I
\end{array}
\]
\[
\left(C H_{3}\right)_{3}
\] | 1 | Chemistry |
The solution of the differential equation
\( x d x+y d y=0 \) is \( f(x, y)=c \) passes
through (1,1) then value of \( c \) is :
\( A \cdot-2 \)
B. 2
\( c .-1 \)
D. | 2 | Maths |
Which of the following reactions will not
yield phenol?
\( A \)
B.
\( c \)
D. | 1 | Chemistry |
Net Capacitance of three identical in
series is \( 1 \mu F \). What will be their net
capacitance, if connected in parallel?
Find the ratio of energy stored in the two configurations, if they are both connected to the same source. | 3 | Physics |
The characteristic not associated with
Planck's theory is:
A. radiations are associated with energy
B. the magnitude of energy associated with a quantum is proportional to frequency
C. radiation energy is neither emitted nor absorbed continuously
D. radiation energy is neither emitted nor absorbed discontinuously | 1 | Chemistry |
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