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A farmer has to go \( 500 m \) due north,
\( 400 m \) due east and \( 200 m \) due south to
reach his field. If he takes 20 minutes to
reach the field. What is the average
velocity of farmer during the walk?
A. \( 25 m / \min \)
в. \( 50 m / \min \)
c. \( 55 m / \min \)
D. \( 110 \mathrm{m} / \mathrm{min} \) | 3 | Physics |
In major product, Chlorine is at which
position?
\( \mathbf{A} \)
B. 2
\( c \cdot 3 \)
\( D \cdot 4 \) | 1 | Chemistry |
Assertion
Fe is protected from corrosion by
connecting Mg metal with it.
Reason
Fe acts as cathode and Mg as anode
which gradually disappears.
A. Both Assertion and Reason are correct and Reason is
the correct explanation for Assertion
B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
C. Assertion is correct but Reason is incorrect
D. Assertion is incorrect but Reason is correct | 1 | Chemistry |
Teeth that are different in shape, size and function are called as
A. Acrodont
B. Pleurodont
c. Homodont
D. Heterodont | 0 | Biology |
Differentiate the following w.r.t.x:
\( 5^{x} \cdot \sec ^{-1} 2 x \) | 2 | Maths |
The quantity which tells the distance an object travels in a certain time is called
A. acceleration
B. speedd
c. velocity
D. none of these | 3 | Physics |
Coordination number of Ni in
\( \left[N i\left(C_{2} O_{4}\right)_{3}\right]^{4-} \) is:
\( A \cdot 3 \)
B. 6
\( c \cdot 4 \)
D. | 1 | Chemistry |
Which one does not occur in Cockroach
leg?
A. Tibia
B. Femur
c. Fibula
D. coxa | 0 | Biology |
Which of the following statements is
incorrect?
A. Cassiterite is an oxide ore of tin.
B. Tin metal is obtained by the carbon reduction of black tin (purified ore of tin)
C. In the extraction of lead from galena, the roasting and self-reduction are carried out in the same furnace at
different temperatures.
D. Reducing agent of hematite in blase-furnace is coke in the upper part and \( \mathrm{CO} \) in the lower part of the furnace. | 1 | Chemistry |
Which is correct?
\( \mathbf{A} \cdot t_{1}=t_{2} \)
B \( \cdot t_{1}>t_{2} \)
\( \mathbf{C} \cdot t_{1}<t_{2} \)
D. Depends upon the mass | 3 | Physics |
Common name of chloroethene is:
A. Benzyl chloride
B. Vinyl chloride
c. Allyl bromide
D. none of these | 1 | Chemistry |
Three simple harmonic motions in the
same direction having the same amplitude \( A \) and same period are superposed. If each differs in phase
from the next by \( 45^{0}, \) then
A . the resulting amplitude is \( (1+\sqrt{3}) A \)
B. the resulting motion is not simple harmonic
C. The energy associated with the resulting motion \( (3+ \) \( 2 \sqrt{2} \) ) times the energy associated with any single motion
D. The phase of the resultant motion relative to the first is \( 90^{\circ} \) | 3 | Physics |
Pressure is a scalar quantity because
A. it is the ratio of force to area and both force and area
are vectors
B. it is the ratio of the magnitude of the force to area.
C. it is the ratio of the component of the force normal to the area.
D. it depends on the size of the area chosen. | 3 | Physics |
The balancing structures in medusae of
cnidarians are
A. Otoliths
B. Statoliths
c. statocysts
D. None of the above | 0 | Biology |
The "geocenter" of two positive numbers is defined as the positive square root of their product. If the geocenter of 5 and \( x \)
is \( 9, \) calculate the value of \( x \)
A . 6.7
в. 7.0
c. 11.3
D. 13.0
E . 16.2 | 2 | Maths |
The nuclei of which one of the following
pairs of nuclei are isotones:
\( A \cdot_{34} \mathrm{Se}^{74},_{31} \mathrm{Ga}^{71} \)
B \( \cdot_{38} \mathrm{Sr}^{84},_{38} \mathrm{Sr}^{86} \)
C \( \cdot_{42} \mathrm{Mo}^{92},_{40} \mathrm{Zr}^{9} \)
D. \( _{20} \mathrm{Ca}_{2}^{40},_{16} \mathrm{S}^{32} \) | 1 | Chemistry |
All of these will directly or indirectly
reduce the contribution to greenhouse
gases except
A. Encouraging the use of public transportation
B. Walking
C. Biking
D. Increasing the cost of car ownership and fuel costs
E. Creating car-free zones | 0 | Biology |
Ethanol is heated with excess
concentrated \( \boldsymbol{H}_{2} \boldsymbol{S} \boldsymbol{O}_{4} \) at \( 443 \mathrm{K} \)
i) Name the reaction that occurs and
explain it.
ii) Write the equation for the above reaction.
iii) What is the product formed? What happens when this gas is passed through bromine water?
iv) When ethanol vapour is passed through bromine water, why does no change occur? | 1 | Chemistry |
Given the sequence of numbers
\( \boldsymbol{x}_{1}, \boldsymbol{x}_{2}, \boldsymbol{x}_{3}, \ldots \ldots . . \boldsymbol{x}_{2013} \) which satisfies
\( \frac{\boldsymbol{x}_{\mathbf{1}}}{\boldsymbol{x}_{\mathbf{1}}+\mathbf{1}}=\frac{\boldsymbol{x}_{\mathbf{2}}}{\boldsymbol{x}_{\mathbf{2}}+\mathbf{3}}=\frac{\boldsymbol{x}_{\mathbf{3}}}{\boldsymbol{x}_{\mathbf{3}}+\mathbf{5}}=\dots \dots \)
\( \frac{x_{2013}}{x_{2013}+4025}, \) nature of the sequence is
A . A.P
в. \( G . P \)
c. \( H . P \)
D. A.G.P | 2 | Maths |
The wavelength of light of a particular colour is 5800 A. What is its order of
magnitude in meter? | 3 | Physics |
Why is it important for plants to scatter seeds?
A. To avoid overcrowding which results in unhealthy plants
B. To prevent the seeds from becoming parasites to the parent plants
c. To ensure that plants of a particular type will be spread to new places
D. Both A and C | 0 | Biology |
If \( \boldsymbol{A}=\{\boldsymbol{p}, \boldsymbol{q}, \boldsymbol{r}, \boldsymbol{s}\}, \boldsymbol{B}=\{\boldsymbol{r}, \boldsymbol{s}, \boldsymbol{t}, \boldsymbol{u}\}, \) then
\( \boldsymbol{A} / \boldsymbol{B} \) is:
\( A \cdot(p, q) \)
\( B \cdot\{r, s\} \)
c. \( \{t, u\} \)
D. \( \{p, q, t, u\} \) | 2 | Maths |
Two liquids \( A \) and \( B \) form an ideal
solution. What is the vapour pressure of solution containing 2 moles of \( A \) and 3
moles of \( B \) at \( 300 K ? \)
[Given: At \( 300 K \), vapour pressure of
pure liquid \( \boldsymbol{A}\left(\boldsymbol{P}_{A}^{\circ}\right)=\mathbf{1 0 0} \) torr, Vapour
pressure of pure liquid \( B\left(P_{B}^{\circ}\right)= \) \( 300 \text { tor } r] \)
A. 200 torr
B. 220 torr
c. 180 tor
D. None of these | 1 | Chemistry |
How many of following are electrophile? \( \boldsymbol{C H}_{3}, \stackrel{\oplus}{\boldsymbol{N}} \boldsymbol{H}_{4}, \boldsymbol{H}_{3} \boldsymbol{O}^{\oplus}, \boldsymbol{C} \boldsymbol{O}_{2}, \boldsymbol{S} \boldsymbol{O}_{3}, \boldsymbol{C} \stackrel{\ominus}{\boldsymbol{H}}_{3} \) | 1 | Chemistry |
State True or False.
\( C O_{2} \) is a polar molecule but not have
polar bond
A. True
B. False | 1 | Chemistry |
The two compounds \( \boldsymbol{C H}_{3}-\boldsymbol{C H}_{2}-\boldsymbol{C} \|_{2}-\boldsymbol{C H}_{2}- \)
\( \boldsymbol{C H}_{3} \) and \( \boldsymbol{C H}_{3}-\stackrel{\boldsymbol{O} \|}{\boldsymbol{C}}-\underbrace{\boldsymbol{C H}_{3}}_{\mid \boldsymbol{C H}_{3}}-\boldsymbol{C H}_{3} \)
may be considered as:
A. position isomers
B. metamers
c. stereoisomers
D. tautomers | 1 | Chemistry |
Red phosphorus is less reactive than
yellow phosphorus because
A. It is red in colour
B. It is highly polymerised
C. It is insoluble in \( C_{2} H_{5} O H \)
D. It is hard | 1 | Chemistry |
For the properties mentioned, the correct trend for the different species
is :
A. inert pair effect - \( A l>G a>I n \)
B. first ionization enthalpy \( -B>A l>T l \)
C . strength as Lewis acid - \( B C l_{3}>A l C l_{3}>G a C l_{3} \)
D. oxidising property \( -A l^{+3}>I n^{+3}>T l^{+3} \) | 1 | Chemistry |
In male grasshoppers and moths, there are two pairs of autosomes and
A. \( x \) only
B. x and
c. Y only
D. None of the above | 0 | Biology |
\( \ln \Delta A B C, \) D is a point on BC such that
\( A B=A D=B D=D C \). then
\( \angle A D C: \angle C=4: 1 \)
State whether the above statement is
true or false.
A. True
B. False | 2 | Maths |
Eliminate the arbitrary constants and obtain the differential equation satisfied by it: \( \boldsymbol{y}=\left(\frac{\boldsymbol{a}}{\boldsymbol{x}^{2}}\right)+\boldsymbol{b} \boldsymbol{x} \)
A \( \cdot x^{2} y^{\prime \prime}+2 x y^{\prime}-2 y=0 \)
B . \( x^{2} y^{\prime \prime}+2 x^{2} y^{\prime}-2 y=0 \)
C \( \cdot x^{2} y^{\prime \prime}+2 x y^{\prime}+2 x y=0 \)
D. \( x^{2} y^{\prime \prime}-2 x y^{\prime}+2 x y=0 \) | 2 | Maths |
A circular current carrying coil has a radius \( R \). The distance from the centre
of the coil on the axis where the
magnetic induction will be \( \left(\frac{1}{8}\right)^{t h} \) of its value at the centre of the coil is
A \( \cdot \frac{R}{\sqrt{3}} \)
в. \( R \sqrt{3} \)
с. \( 2 R \sqrt{3} \)
।
D. \( \left(\frac{2}{\sqrt{3}}\right)^{R} \) | 3 | Physics |
In the Molisch reagent the substance
used is:
A. \( \beta \) naphthol in alchol
B. \( \alpha \) naphthol in alchol
c. Reasrcinol in alchol
D. Rosaniline in water | 1 | Chemistry |
Find the ratio of magnetic dipole moment to angular momentum in a hydrogen like atom:
A \( \cdot \frac{e}{m} \)
B. \( \frac{e}{2 m} \)
c. \( \frac{e}{3 m} \)
D. \( \frac{2 e}{m} \)
E \( \cdot \frac{3 e}{m} \) | 3 | Physics |
The number of straight lines which are equally inclined to both the axes is ;
A . 4
B.
\( c \cdot 3 \)
\( D \) | 2 | Maths |
Evaluate the integral \( \int_{0}^{1}\left(3 x^{2}+2 x\right) d x \) | 2 | Maths |
In a n-type semiconductor, which of the following statement is true?
A. Electrons are majority carriers and trivalent atoms are dopants
B. Electron are minority carriers and pentavalent atoms are dopants.
C. Holes are minority carriers and pentavalent atoms are dopants.
D. Holes are majority carriers and trivalent atoms are dopants | 3 | Physics |
A point charge \( -q \) is carried from a
point \( A \) to another point \( B \) on the axis of a charged ring of radius 'r' carrying a charge \( +q / \) If the point \( A \) is at \( a \) distance \( \frac{4}{3} r \) from the centre of the ring and the point \( \mathrm{B} \) is \( \frac{3}{4} r \) from the centre but on the opposite side, what is the net work that need to be done for this?
\( ^{\mathrm{A}} \cdot-\frac{7}{5} \frac{q^{2}}{4 \pi \varepsilon_{0} r} \)
В. \( -\frac{1}{5} \frac{q^{2}}{4 \pi \varepsilon_{0} r} \)
c. \( \frac{q^{2}}{54 \pi \varepsilon_{0} r} \)
D. \( \frac{q^{2}}{54 \pi \varepsilon_{e} r} \) | 3 | Physics |
\( \int_{-\frac{\pi}{2}}^{\frac{\pi}{2}} \sin ^{2} x \cdot \cos ^{3} x d x \) is equal to
A. \( \frac{4 \pi}{30} \)
B. \( \frac{4}{15} \)
c. \( \frac{\pi}{30} \)
D. \( \frac{1}{15} \) | 2 | Maths |
Acidified solution of \( K_{2} C r_{2} O_{7} \) on
treatment with \( \boldsymbol{H}_{2} \boldsymbol{O}_{2} \) yields:
A. \( C r O_{3}+H_{2} O+O_{2} \)
в. \( C r_{2} O_{2}+H_{2} O+O_{2} \)
\( \mathrm{c} \cdot \mathrm{Cr} \mathrm{O}_{5}+\mathrm{H}_{2} \mathrm{O}+\mathrm{K}_{2} \mathrm{SO}_{4} \)
D. \( H_{2} C r_{2} O_{7}+H_{2} O+O_{2} \) | 1 | Chemistry |
For a given distance from a current
element, the magnetic induction is
maximum at an angle measured with
respect to axis of the current. The angle
is :
A \( \cdot \frac{3 \pi}{4} \)
B. \( \frac{\pi}{4} \)
c. \( \frac{\pi}{2} \)
D. \( 2 \pi \) | 3 | Physics |
Derive van't Hoff general solution
equation. | 1 | Chemistry |
There are following extraction process
of silver but not:
A. as a side product in electrolytic refining of copper
B. Parke's process in which Zn is used to extract silver by solvent extraction from molten lead
C. by reaction of silver sulphide with \( K C N \) and then reaction of soluble complex with \( \mathrm{Zn} \).
D. by heating \( N a\left[A g(C N)_{2}\right] \) | 1 | Chemistry |
The IUPAC name of the following compound is:
\( \begin{aligned} \boldsymbol{C}_{2} \boldsymbol{H}_{5}-& \underset{\|}{\boldsymbol{C}}-\boldsymbol{C} \boldsymbol{H}-\boldsymbol{C} \boldsymbol{H}_{3} \\ & \boldsymbol{C H}_{2} \quad \boldsymbol{C} \boldsymbol{H}_{3} \end{aligned} \)
A. 3-methyl-2-ethylbut-1-yne
B. 2-ethyl-3-methylbut-1-ene
c. 3-ethyl-3-methylbutene
D. ethylisopropylethane | 1 | Chemistry |
Aradhya buys \( 9,000 K g \) potatoes for
Rs.15 per Kg. She dries it for chips. The
chips becomes one-third of the total weight. She sells the chips for Rs.50 per Kg. How much money will
she get as profit? | 2 | Maths |
Select the basic strength order of following molecules.
A. \( I I I>I I>I \)
B. \( I I>I I I>I \)
\( c . I>I I I>I I \)
D. \( I I I>I>I I \) | 1 | Chemistry |
The moon revolves round the earth 13
times in one year. If the ratio of sunearth distance to earth-moon distance
is \( 392, \) then the ratio of masses of sun
and earth will be
A . 365
B. 356
c. \( 3.56 \times 10^{5} \)
D. | 3 | Physics |
One hundred identical coins, each with probability, \( p, \) of showing up heads are
tossed once. If \( 0<p<1 \) and the
probability of heads showing on 50 coins is equal to that of heads showing on 51 coins, then the value of \( p \) is:
\( A \cdot \frac{1}{2} \)
в. \( \frac{49}{101} \)
c. \( \frac{50}{101} \)
D. \( \frac{51}{101} \) | 2 | Maths |
Cod liver oil is:
A. fat dispersed in water
B. water dispersed in fat
C . water dispersed in oil
D. fat dispersed in fat | 1 | Chemistry |
Assertion
\( f \) is a function defined on the interval
[-1,1] such that \( f(\sin 2 x)=\sin x+ \)
\( \cos x \)
Statement I: If \( \boldsymbol{x} \in\left[-\frac{\boldsymbol{\pi}}{\boldsymbol{4}}, \frac{\boldsymbol{\pi}}{\boldsymbol{4}}\right], \) then
\( f\left(\tan ^{2} x\right)=\sec x \)
Reason
Statement II: \( \boldsymbol{f}(\boldsymbol{x})=\sqrt{\mathbf{1}+\boldsymbol{x}}, \forall \boldsymbol{x} \in \)
[-1,1]
A. Statement I is true, Statement II is also true:
Statement II is the correct explanation of Statement
B. Statement I is true, Statement II is also true Statement II is not the correct explanation of Statement
c. statement lis true, statement II is false
D. statement lis false, statement II is true | 2 | Maths |
Dry hydrogen can oxidise copper oxide to form copper metal.
A . True
B. False | 1 | Chemistry |
Which among the following is a rational
number?
A. \( \sqrt{2} \)
в. \( \sqrt{\pi} \)
\( c \cdot \sqrt{7} \)
D. \( \sqrt{\frac{5}{25}} \)
E \( \cdot \sqrt{\frac{64}{49}} \) | 2 | Maths |
The least stable hydride is:
A . \( N H_{3} \)
в. \( P H_{3} \)
c. \( A s H_{3} \)
D. \( S b H_{3} \) | 1 | Chemistry |
An adaptation in the structure and
function of loop of Henle to xerophytic
environment is
A. A short loop of Henle, which allows more filtrate to be removed from the blood
B. A short loop of Henle, which allows less water to be removed from the filtrate
C. A long loop of Henle, which allows more filtrate to be removed from the blood
D. A long loop of Henle, which allows more water to be removed from the filtrate
E. A long loop of Henle, which allows less filtrate to be removed from the blood | 0 | Biology |
The oil layer on the surface of water appears coloured, due to interference. For this effect to be visible the
thickness of oil layers will be
A . \( 1 m m \)
B. \( 1 c m \)
c. \( 100 A^{\circ} \)
D. \( 1000 A^{\circ} \) | 3 | Physics |
A square is a
A. kite
B. trapezium
C . triangle
D. rhombus | 2 | Maths |
For a triangle \( A B C, \) the true statement is:
A \( \cdot A C^{2}=A B^{2}+B C^{2} \)
B. \( A C=A B+B C \)
c. \( A C>A B+B C \)
D. \( A C<A B+B C \) | 2 | Maths |
Which of the following is true?
A. The electron density in the xy-plane in 3d \( _{x y} \) orbital si
zero
B. The electron densities in the xy and xz-plane in 3d \( _{y z} \) orbital are zero
C. The electron density in the xy-plane in \( 3 d_{x}^{2} \) orbital is
zero
D. Pauli exclusion principle is followed by bosons which have integral spin | 1 | Chemistry |
Hormone involved in breaking dormancy of winter buds is
A. Ethylene
B. Gibberellin
c. Auxin
D. Cytokinin | 0 | Biology |
Sodium bicarbonate solution has \( \boldsymbol{p} \boldsymbol{H} \)
less than 7 .
State True or False:
A. True
B. False
c. cannot be determined
D. None of the above | 1 | Chemistry |
A line that intersects a circle at two
distinct points is called
A . a diameter
B. a secant
c. a tangent
D. a radius | 2 | Maths |
Mr. Verma (50 \( K g \) ) and Mr. Mathur \( (60 K g) \) are sitting at the two extremes
of a \( 4 m \) long boat \( (40 K g) \) standing still in water. To discuss a mechanics
problem, they come to the middle of the boat. Neglecting friction with water, how far does the boat move in the water
during the process:
A \( .40 / 3 c m \)
в. \( 20 / 3 \) ст
c. \( 10 / 3 c m \)
D. \( 10 \mathrm{cm} \) | 3 | Physics |
A man is unable to see closer than \( 1 \mathrm{m} \)
clearly.The power of lenses of his spectacles should be to see nearby object.
\( A \cdot 3 D \)
B. 6 D
\( c \cdot 10 \)
D. 2 | 3 | Physics |
The number of seats for admission is
increased by \( 10 \% \) every year. If the number of seats in 2001 was \( 400, \) what
were the number of seats in 2003?
A. 824
B. 484
\( c .500 \)
D. 480 | 2 | Maths |
During laboratory preparation of oxygen by hydrogen peroxide and potassium chlorate, the gas is collected by displacement of water
A. downward, upward
c. downward | 1 | Chemistry |
What is \( \sin ^{2} 20^{\circ}+\sin ^{2} 70^{\circ} \) equal to?
\( \mathbf{A} \cdot \mathbf{1} \)
B. 0
\( c \cdot-1 \)
D. | 2 | Maths |
The bond energy of \( C-C \) bond in
kcal/mol is?
A . 58
B. 83
\( c .145 \)
D. 192 | 1 | Chemistry |
Which of the following reactions does
not occur?
A \( \cdot F_{2}+2 C l^{-} \rightarrow 2 F^{-}+C l_{2} \)
B. \( C l_{2}+2 F^{-} \rightarrow 2 C l^{-}+F_{2} \)
c. \( B r_{2}+2 I^{-} \rightarrow 2 B r^{-}+I_{2} \)
D. \( C l_{2}+2 B r^{-} \rightarrow 2 C l^{-}+B r_{2} \) | 1 | Chemistry |
Give reasons of the following:
\( N_{2} O_{5} \) is more acidic than \( N_{2} O_{3} \) | 1 | Chemistry |
Primary circuit of potentio meter is as
shown in the diagram find potentia
gradient. | 3 | Physics |
\( \boldsymbol{n} \stackrel{L t}{\rightarrow} \infty\left[\frac{\boldsymbol{n}+\mathbf{1}}{\boldsymbol{n}^{2}+\mathbf{1}^{2}}+\frac{\boldsymbol{n}+\boldsymbol{2}}{\boldsymbol{n}^{2}+\mathbf{2}^{2}}+\ldots+\right. \)
\( \left.\frac{\boldsymbol{n}+\boldsymbol{n}}{\boldsymbol{n}^{2}+\boldsymbol{n}^{2}}\right]= \)
A. \( \frac{\pi}{4}+\frac{1}{2} \log 2 \)
B. \( \frac{\pi}{4}-\frac{1}{2} \log 2 \)
c. \( \frac{\pi}{2}+\frac{1}{2} \log 2 \)
D. \( \frac{\pi}{4}+\frac{1}{4} \log 2 \) | 2 | Maths |
The solution of the equation \( \frac{d y}{d x}+ \)
\( \boldsymbol{x}(\mathbf{2} \boldsymbol{x}+\boldsymbol{y})=\boldsymbol{x}^{3}(\boldsymbol{2} \boldsymbol{x}+\boldsymbol{y})^{3}-\boldsymbol{2} \) is \( (C \)
being arbitrary constant):
A \( \cdot \frac{1}{2 x+x y}=x^{2}+1+C e^{x} \)
B. \( \frac{1}{(2 x+y)^{2}}=x^{2}+1+C e^{x^{2}} \)
c. \( \frac{1}{2 x+y}=x+1+C e^{-x^{2}} \)
D. \( \frac{1}{(2 x+y)^{2}}=x^{2}+1+C \) | 2 | Maths |
Who coined the term ecosystem?
A. Tansley
B. Odum
c. Warming
D. Darwin | 0 | Biology |
Two ideal junction diodes \( D_{1}, D_{2} \) are
connected as shown in the figure. A \( 3 V \)
battery is connected between \( A \) and \( B \) The current supplied by the battery, if its positive terminal is connected to B
is
A \( .0 .15 ~ A \)
в. 0.3 А
\( c .3 A \)
D. 1.4 | 3 | Physics |
Assertion
Divalent compounds of alkaline earth metals are diamagnetic.
Reason
\( M^{2+} \) ions of group 2 have noble gas conguration.
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 |
Mention the types of solutions based on
the \( p H \) value. | 1 | Chemistry |
Where must an object be placed in front of a convex lens so that the image formed is at infinity? | 3 | Physics |
Find the derivative of the following functions:
(i) \( \tan x \cos x \)
(ii) \( \sec x \) | 2 | Maths |
Assertion
Excess nitrate in drinking water causes
blue baby' syndrome.
Reason
The maximum limit of nitrate in
drinking water is 50 ppb.
A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
C. Assertion is correct but Reason is incorrect
D. Both Assertion and Reason are incorrect | 0 | Biology |
The tendency of a body to resist acceleration is called:
A. Force
B. Retardation
c. Inertia
D. mass | 3 | Physics |
Explain the following reactions:
(i) Reimer-Tiemann reaction
(ii) Williamson synthesis | 1 | Chemistry |
The strongest - \( \mathrm{CO} \) bond is present in:
A \( \cdot\left[C r(C O)_{6}\right]^{+} \)
в \( \cdot\left[F e(C O)_{5}\right] \)
\( \mathbf{c} \cdot\left[V(C O)_{6}\right]^{-} \)
D. all have equal strength | 1 | Chemistry |
When each term of a sequence is
connected using \( a+ \) or \( a-\operatorname{sign}, \) then it
is referred to as the of numbers
A. Series
B. Progression
c. Arithmetic Progression
D. Geometric Prpgression | 2 | Maths |
ff \( y=2 \tan ^{-1} x+\sin ^{-1} \frac{2 x}{1+x^{2}} \) then
A. \( -\pi / 2<y<\pi / 2 \)
в. \( -3 \pi / 2<y<3 \pi / 2 \)
c. \( -\pi<y<\pi \)
D. \( -\pi / 4<y<\pi / 4 \) | 2 | Maths |
A ball thrown upwards at an angle describes \( -\ldots- \) motion
A . curvilinear
B. rectilinear
c. periodic
D. oscillatory | 3 | Physics |
the pressure exerted by atmosphere is
\( ? \)
A. large
B. small
c. zero
D. none of the above | 3 | Physics |
The net charge on a condenser is :
A . infinity
B. \( 9 / 2 \)
\( c \cdot 29 \)
D. zero | 3 | Physics |
The point lying on angle bisector of the
planes \( \boldsymbol{x}+\mathbf{2} \boldsymbol{y}+\mathbf{2} \boldsymbol{z}-\mathbf{6}=\mathbf{0} \) and \( \mathbf{2} \boldsymbol{x}- \)
\( \boldsymbol{y}+\boldsymbol{4}=\mathbf{0} \) is
A. (2,4,0)
B. (-1,3,2)
D. (-2,4,0) | 2 | Maths |
Write the domain of the relation \( \boldsymbol{R} \)
defined on the set \( \mathbb{Z} \) of integers as
follows:
\( (a, b) \in R \Leftrightarrow a^{2}+b^{2}=25 \) | 2 | Maths |
If \( \boldsymbol{A}=\left[\begin{array}{ll}2 & 3 \\ 5 & 7\end{array}\right], \) then find \( A+A^{T} \) | 2 | Maths |
What do you understand by the term
Echo? | 3 | Physics |
State whether true or false.
Pure water is a good conductor of electricity.
A. True
B. False | 3 | Physics |
One gram atom of an element contains \( 6.02 \times 10^{23} \) atoms.
(a) Find the number of oxygen atoms in
\( 4 g \) of \( O_{2} \)
(b) Which is heavier, one oxygen atom
or 10 hydrogen atoms? | 1 | Chemistry |
What is the value of unknown
resistance \( R \), of galvanometer shows
null deflection in the given meter bridge
set up shown in the fig?
A \( .97 .50 \Omega \)
3. \( 105 \Omega \)
\( c .220 \Omega \)
\( 0.110 \Omega \) | 3 | Physics |
Find the weight of a box on earth having a mass of \( 20 \mathrm{kg} \)
\( A \cdot 196 N \)
B. 19.6 N
c. \( 1.96 \mathrm{N} \)
D. 0.19 N | 3 | Physics |
An aqueous solutions of diabasic acid (molecular mass \( =118 \) ) containing
\( 35.4 \mathrm{g} \) of acid per litre of the solution has density \( 1.0077 g m L^{-1} \). Find the mole fraction of the solvent. | 1 | Chemistry |
The heart of man beats 75 times a
minute. What is its frequency? | 3 | Physics |
A person looks into the mirror by placing it close to his face. if the image of the face was found erect and
magnified, then the mirror must be
A. plane
B. concave
c. convex
D. none of these | 3 | Physics |
The total number of possible isomer for the complex compound:
\( \left[\boldsymbol{C u}\left(\boldsymbol{N} \boldsymbol{H}_{3}\right)_{4}\right]\left[\boldsymbol{P t} \boldsymbol{C l}_{4}\right] \)
\( A \cdot 3 \)
B. 6
\( c \cdot 5 \)
\( D \) | 1 | Chemistry |
A system goes from \( A \) to \( B \) in two
processes I and II as shown in the fig. If
\( \Delta U_{1} \) and \( \Delta U_{2} \) are the changes in
internal energies in the processes I and
II respectively then.
A \( . \Delta U_{2}<\Delta U_{1} \)
B \( . \Delta U_{2}>\Delta U_{1} \)
C. Relation between \( \Delta U_{2} \) and \( \Delta U_{1} \) can not bedetermined
D. \( \Delta U_{2}=\Delta U_{1} \) | 3 | Physics |
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