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At lower temperature, most gases show:
A. negative deviation
B. positive deviarion
c. positive and negative decviation
D. none of the above
| 1 |
Chemistry
|
Denitrification is caused by
A. Pseudomonas
B. Nitrobacter
c. Nitrosomonas
D. Azotobacter
| 0 |
Biology
|
Convert the given fractional numbers to
per cents. \( \frac{1}{8} \)
\( \frac{5}{4} \)
\( \frac{3}{40} \)
\( \frac{2}{7} \)
| 2 |
Maths
|
Find if polynomial \( x^{4}-3 x^{3}+7 x^{2}- \)
\( 8 x+12 \) is exactly divisible by \( x^{2}- \)
\( 2 x+2 \)
| 2 |
Maths
|
Let \( A B C D \) be a square of side length 1
and \( \Gamma \) a circle passing through \( B \) and \( C \) and touching \( A D . \) The radius of \( \Gamma \) is
A
в.
c. \( \frac{1}{\sqrt{2}} \)
D.
| 2 |
Maths
|
If \( \mathrm{N} \) is the number of turns in a coil, the
value of self-inductance varies are
\( \mathbf{A} \cdot \mathbf{N}^{\mathbf{0}} \)
B.
c. \( N^{2} \)
\( D \cdot N^{-2} \)
| 3 |
Physics
|
Let \( \boldsymbol{f}(\boldsymbol{x})=\frac{\boldsymbol{4}}{\mathbf{3}} \boldsymbol{x}^{3}-\mathbf{4} \boldsymbol{x}, \mathbf{0} \leq \boldsymbol{x} \leq \mathbf{2} . \) Then
the global minimum value of the function is
\( \mathbf{A} \cdot \mathbf{0} \)
B. \( -8 / 3 \)
c. -4
D. none of these
| 2 |
Maths
|
Two point charges \( +q \) and \( +q \) are fixed at \( (a, 0,0) \) and \( (-a, 0,0) . \) A third point charge \( -q \) is at origin. State whether its equilibrium is stable, unstable or neutral if it is slightly displaced along
\( \boldsymbol{x}- \) axis.
A . Stable
B. Unstable
c. Neutral
D. Data insufficient
| 3 |
Physics
|
When a certain metal was irradiated
with a light of \( 8.1 \times 10^{16} \) Hz frequency,
the photoelectron emitted had 1.5 times the kinetic energy as did the photoelectrons emitted when the same metal was irradiated with light \( 5.8 \times \)
\( 10^{16} \mathrm{Hz} \) frequency. If the same metal is
irradiated with light of 3.846 nm
wavelength,what will be the energy of the photoelectron emitted?
A \( .1 .8 \times 10^{2} e V \)
В. \( 3.65 \times 10^{-17} J \)
c. \( 2.28 \times 10^{2} e V \)
D. \( 4.37 \times 10^{-17} J \)
| 1 |
Chemistry
|
The smallest rationalizing factor of \( \sqrt[3]{63} \) is
A \( \cdot \sqrt[3]{37} \)
в. \( \sqrt[3]{62} \)
\( c \cdot \sqrt[3]{147} \)
D. \( \sqrt[3]{243} \)
| 2 |
Maths
|
Assertion (A): The basic nature of VA
group hy-drides decreases from ammonia to bismuthine.
Reason (R): Availability of lone pair on the cen-tral atom in hydrides decreases
down the group.
A. Both (A) and (R) are true and
(R) is the correct
explanation of (A)
B. Both (A) and (R) are true and (R) is not the
correct explanation of (A)
\( c . \) (A) is true and
(R) is false
D. (A) is false but (R) is true
| 1 |
Chemistry
|
Which of the following has highest second ionization energy?
A . \( N i \)
в. \( V \)
\( c \cdot C r \)
D. \( M n \)
| 1 |
Chemistry
|
Write Gauss's theorem of electrostatics.
Obtain an expression for the intensity of electric field near a uniformly charged
straight wire of infinite length with its help.
| 3 |
Physics
|
If the radius of earth decreases by \( 10 \% \) the mass remaining unchanged, what will happen to the acceleration due to gravity?
A. Decreases by \( 19 \% \)
B. Increases by \( 19 \% \)
c. Decreases by more than \( 19 \% \)
D. Increases by more than \( 19 \% \)
| 3 |
Physics
|
Which of the following metal(s) form(s) polynuclear carbonyl?
A . Na a
в. Мв
\( c . \) мп
\( D \cdot A \)
| 1 |
Chemistry
|
Which of the following has the largest heart?
A . Giraffe
B. Lion
c. crocodile
D. None of the above
| 0 |
Biology
|
Identify the salt(s) of an oxyacid formed
from univalent metal \( (M) \)
This question has multiple correct options
A \( . M_{2} S O_{4} \)
B. \( M\left(N O_{3}\right)_{2} \)
\( \mathbf{c} \cdot M_{3} C l O_{3} \)
D. \( M H C O_{3} \)
| 1 |
Chemistry
|
A black and a red dice are rolled.
(a) Find the conditional probability of
obtaining a sum greater than \( 9, \) given that the black die resulted in a 5 .
(b) Find the conditional probability of
obtaining the sum 8 , given that the red die resulted in a number less than 4
A. 0.33,0.11
B. 0.51,0.76
c. 0.56,0.43
D. 0.11,0.65
| 2 |
Maths
|
State whether the following statement
is True or False.
The current in the circuit with
inductance \( L \) and resistance \( R \) and
voltage \( \boldsymbol{E} \sin \omega \boldsymbol{t} \) is given by \( \boldsymbol{L} \frac{\boldsymbol{d} \boldsymbol{i}}{\boldsymbol{d} \boldsymbol{t}}+\boldsymbol{R} \boldsymbol{i}= \)
Esinwt.if \( i=0 \) at \( t=0 \) then,current is
given by \( i=\frac{E}{\sqrt{E^{2}+L^{2} \omega^{2}}}[\sin (\omega t- \)
\( \left.\phi)+e^{-R t / L} \sin \phi\right] \) where \( \phi= \)
\( \tan ^{-1}\left(\frac{L \omega}{R}\right) \)
A. True
B. False
| 2 |
Maths
|
charge particles are pictured in the
same magnetic field which points into the screen (represented by blue \( X^{\prime} \) s) The particles are moving at the same speeds but in different directions, as
indicated by the red arrows. How do the particles rank, in terms of
the force they experience due to their
movements in the magnetic field, greatest first?
A. 1,2,3
B. 1 and 2 tie, 3
c. 3,1 and 2 tie
D. 3,2,1
E. All tie
| 3 |
Physics
|
Three numbers are chosen at random
without replacement from \( 1,2,3, \dots . ., 10 \) The probability that the minimum of
the chosen numbers is 3 or their
maximum is 7 is
A \( \cdot 1 / 2 \)
в. \( 1 / 3 \)
c. \( 1 / 4 \)
D. \( 11 / 40 \)
| 2 |
Maths
|
Give two different examples of pair of
(i)
similar figures
| 2 |
Maths
|
Identify the plant, if veins are appearing parallel on leaves.
A. The plant is a dicot
B. The plant is a monocot
c. The plant is a gymnosperm
D. The plant is an angiosperm
E. The plant is a bryophyte
| 0 |
Biology
|
What would be the best method to bring about the following conversion? \( C H_{3} \)
\( C H_{3}-C_{1}^{\prime}-C H=C H_{2} \longrightarrow C H_{3}- \)
\( \boldsymbol{C H}_{3} \)
\( \dot{C}-C H C H_{3} \)
\( C H_{3} \quad O H \)
\( \mathbf{A} \cdot B H_{3}, T H F ; \) then \( H_{2} O_{2}, O H^{-} \)
B. \( H B r ; \) then \( N a O H / H_{2} O \)
c. conc. \( H_{2} S O_{4}, \) then \( H_{2} O \), heat
D. \( H g(O A c)_{2} / T H F-H_{2} O \), then \( N a B H_{4}, O H^{-} \)
| 1 |
Chemistry
|
A force of \( \left(4 x^{2}+3 x\right) N \) acts on a
particle which displaces it from \( \boldsymbol{x}= \)
\( 2 m \) to \( x=3 m . \) Te work done by the force
is:
A . \( 32.8 \mathrm{J} \)
B. \( 3.281 J \)
c. \( 0.328 J \)
D. zero
| 3 |
Physics
|
For a first-order reaction; \( \mathbf{A} \rightarrow \mathbf{B} \), the
reaction rate at a reactant
concentration of \( 0.01 \mathrm{M} \) is found to be
\( 2.0 \times 10^{-5} \) mole \( L^{-1} s^{-1} . \) The half-life
period of the reaction is:
A . 300 s
в. \( 30 s \)
\( c .220 s \)
D. 347
| 1 |
Chemistry
|
If a wire is bent into the shape of a
square, then the area of the square is \( 81 \mathrm{cm}^{2} . \) When the same wire is bent
into a semi-circular shape, then the
area of the semi circle will be
\( \mathbf{A} \cdot 22 \mathrm{cm}^{2} \)
B. \( 44 \mathrm{cm}^{2} \)
\( \mathrm{c} \cdot 77 \mathrm{cm}^{2} \)
D. \( 154 \mathrm{cm}^{2} \)
| 2 |
Maths
|
A particle moves in a straight line with constant acceleration a. The
displacements of particle from origin in
times \( t_{1}, t_{2} \) and \( t_{3} \) are \( s_{1}, s_{2} \) and \( s_{3} \) respectively. If time are in AP with
common difference d and
displacements are in GP, then prove that \( a=\frac{(\sqrt{s_{1}-\sqrt{s_{3}}})^{2}}{d^{2}} \)
| 3 |
Physics
|
State True or False:
Saturation current depends on
temperature.
A. True
B. False
| 3 |
Physics
|
In man expired air contains oxygen about
A . \( 4 \% \)
B . 10\%
c. \( 16 \% \)
D. 20\%
| 0 |
Biology
|
Write the reactions of (i) aromatic and
(ii) aliphatic primary amines with nitrous acid.
| 1 |
Chemistry
|
Name the connecting link between glycolysis and TCA cycle and explain it.
| 0 |
Biology
|
The following table gives the daily wages of workers in a factory. Compute the standard deviation and the
coefficient of variation of the wages of
the workers.
\( \begin{array}{lllll}\begin{array}{l}\text { Wages } \\ \text { (Rs) }\end{array} & \begin{array}{l}\text { 125- } \\ \text { 175 }\end{array} & \begin{array}{l}\text { 175- } \\ \text { 225 }\end{array} & \begin{array}{l}\text { 225- } \\ \text { 275 }\end{array} & \begin{array}{l}\text { 275- } \\ \text { 325 }\end{array}\end{array} \)
of
workers
?
| 2 |
Maths
|
Some physical quantities are given in list 1. The related units are given in list
2. Match the correct pairs
List 1 List 2
a) Magnetic Field Intensity \( W b m^{-1} \)
e)
) Magnetic Flux f) \( W b m^{-2} \)
b)
c Potential Magnetic \( W b \)
c) g)
h) \( A m^{-1} \)
d) Magnetic Induction
A. \( a-e, b-f, c-g, d-h \)
B. a-h, b-g, c-e, d-f
c. a-h, b-e, c-g, d-f
D. a-f, b-g, c-e, d-h
| 3 |
Physics
|
A student performs an experiment for determination of \( \boldsymbol{g}=\left[\frac{\mathbf{4} \boldsymbol{\pi}^{2} \boldsymbol{L}}{\boldsymbol{T}^{2}}\right], \boldsymbol{L}=\mathbf{1} \boldsymbol{m} \)
and he commits an error of \( \triangle L \). For The
takes the time of n oscillations with the
stopwatch of least count \( \triangle T . \) For which
of the following data, the measurement of \( g \) will be most accurate?
A. \( \triangle L=0.5, \Delta T=0.1, n=20 \)
B. \( \triangle L=0.5, \Delta T=0.1, n=50 \)
c. \( \triangle L=0.5, \Delta T=0.01, n=30 \)
D. \( \triangle L=0.5, \Delta T=0.05, n=50 \)
| 3 |
Physics
|
Let \( P(x, y) \) be a moving point in the \( x- \) \( \boldsymbol{y} \) plane such that \( [\boldsymbol{x}] .[\boldsymbol{y}]=2, \) where \( [.] \)
denotes the greatest integer function, then area of the region containing the points \( \boldsymbol{P}(\boldsymbol{x}, \boldsymbol{y}) \) is equal to:
A. 1 sq. units
B. 2 sq. units
c. 4 sq. units
D. None of these
| 2 |
Maths
|
Match the following and choose the
correct combination from the options
given.
\( \begin{array}{llll} & \text { Column-I } & & \text { Column-II } \\ \text { A. } & \begin{array}{l}\text { Walter } \\ \text { Sutton }\end{array} & \text { 1. } & \begin{array}{l}\text { Discovered } \\ \text { penicillin }\end{array} \\ \text { B. } & \begin{array}{l}\text { Thomas } \\ \text { Hunt }\end{array} & \text { 2. } & \begin{array}{l}\text { Discovered the } \\ \text { chromosomal } \\ \text { basis of heredity }\end{array} \\ \text { D. } & \begin{array}{l}\text { James } \\ \text { Watson }\end{array} & \text { 3. } & \begin{array}{l}\text { Described the } \\ \text { phenomenon of } \\ \text { linkage and } \\ \text { crossing over }\end{array} \\ & \text { Morgan } & & \begin{array}{l}\text { Discovered the } \\ \text { double helical } \\ \text { structure of DNA }\end{array}\end{array} \)
A. A-1, B-4, C- 2, D-3
B. A- 2, B-3, C-1, D-4
C. \( A-3, B-2, C-1, D-4 \)
D. A- 2, B-3, C-4,D-1
E. A- 4, B-1, C-2,
\( D \)
| 0 |
Biology
|
If \( A \) is an event of a random experiment such that \( P(A): P(\bar{A})=5: 11 \), then
find \( P(A) \) and \( P(\bar{A}) \)
| 2 |
Maths
|
For the velocity time graph shown in the
figure, the distance covered by the body in the last two seconds of its motion is
what fraction of the total distance
travelled by it in all the seven seconds?
\( A \)
B. 4
\( c \)
D.
| 3 |
Physics
|
A wave has velocity v in medium P and velocity \( 2 v \) in medium \( Q \). If the wave is incident in medium \( \mathrm{P} \) at an angle of 30 then the angle of refraction will be
A \( .30^{\circ} \)
B . \( 45^{\circ} \)
\( c \cdot 60^{\circ} \)
D. \( 90^{\circ} \)
| 3 |
Physics
|
A wax candle burns with yellow flame.
Give reason.
| 1 |
Chemistry
|
Explain why some of the leaves may get detached from a tree if we vigorously shake it branch.
| 3 |
Physics
|
Draw a labelled diagram of a candle flame and explain what happens in
each zone.
| 1 |
Chemistry
|
The increasing \( d \) -character in
hybridisation of \( X e \) in
\( X e F_{2}, X e F_{4}, X e F_{6} \) is :
A. \( \mathrm{XeF}_{2}<\mathrm{XeF}_{4}<\mathrm{XeF}_{6} \)
B. \( \mathrm{XeF}_{4}<\mathrm{XeF}_{2}<\mathrm{XeF}_{6} \)
\( \mathbf{c} \cdot \mathbf{X}_{\mathbf{e}} F_{6}<\mathbf{X} \mathbf{e} F_{4}<\mathbf{X}_{\mathbf{e}} F_{2} \)
D. \( \mathrm{XeF}_{2}<\mathrm{XeF}_{6}<\mathrm{XeF}_{4} \)
| 1 |
Chemistry
|
Electric heaters used for cooking have the filament or the heating coil on a plate made up of clay because
A. Clay is a bad conductor of heat
B. Clay is a bad conductor of electricity
c. Both \( A \& B \)
D. None of these
| 3 |
Physics
|
Find the volume of a cube of edge \( 6 \mathrm{cm} \)
\( \mathbf{A} \cdot 64 \mathrm{cm}^{3} \)
В. \( 125 \mathrm{cm}^{3} \)
\( c \cdot 216 c m^{3} \)
D. \( 343 \mathrm{cm}^{3} \)
| 2 |
Maths
|
Polysomes lack
A. Proteins
B. mRNA
c. DNA
D. tRNA and rRNA
| 0 |
Biology
|
Rainbow is formed in which direction
with respect to the sun?
A. Same direction
B. Opposite direction
c. Depends on the time of the day
D. North direction
| 3 |
Physics
|
toppr
Q Type your question
objects moving at constant speed in circular paths are shown. The objects speeds, circular path radii, and masses
are given in each diagram.
In which situation does the pictured object have the greatest amount of acceleration due to its circular motion?
\( A \)
B.
\( c \)
\( D \)
E. None of the object in this question is accelerating, since they all are moving at a constant speed
| 3 |
Physics
|
It is given that \( \angle X Y Z=64^{\circ} \) and \( X Y \) is
produced to point P.Draw a figure from the given information If ray y objects \( \angle Z Y P, \) find \( \angle X Y Q \)
| 2 |
Maths
|
How many nodal plane is/are present in
\( \sigma_{s-s}^{*} \) anti-bonding molecular orbital?
| 1 |
Chemistry
|
Match Column-I with Column-II.
ColumnColumn-II
(a)
(i) Symbiotic association of fungi Saprophyte with plant roots
(ii) Decomposition of dead organic
(b) Parasite materials
(iii) Living on living plants or
(c) Lichens animals
(d)
(iv) Symbiotic association of algae Mycorrhiza and fungi
Choose the correct answer from the
option given.
B. (a)-(iii), (b)-(ii), (c)-(i), (d)-(iv)
C. (a)-(ii), (b)-(i), (c)-(iii), (d)-(iv)
D. (a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)
| 0 |
Biology
|
Which one of the following shows maximum paramagnetic character?
\( \mathbf{A} \cdot\left[F e(C N)_{6}\right]^{3-} \)
в. \( \left[F e(C N)_{6}\right]^{4-} \)
\( \mathbf{c} \cdot\left[\operatorname{Cr}\left(H_{2} O\right)_{6}\right]^{3+} \)
D \( \cdot\left[C u\left(H_{2} O\right)_{6}\right]^{2+} \)
| 1 |
Chemistry
|
Root pressure in maximum, when
A. Transpiration is high and absorption is very low.
B. Transpiration is very low and absorption is high.
C. Absorption is very high and transpiration is also very high.
D. Absorption is very low and transpiration is also low.
| 0 |
Biology
|
The given quadratic equations have real
roots and the roots are equal and it is 1:
\( x^{2}-2 x+1=0 \)
A. True
B. False
| 2 |
Maths
|
About \( 97 \% \) of \( O_{2} \) is transported by RBC.
The remaining \( 3 \% \) is
A. Dissolved in plasma and transported
B. Remains in lungs
c. Attached to cell membranes
D. Inside the mitochondria
E. In peroxisomes
| 0 |
Biology
|
Write any two characteristics of
Chemisorption.
| 1 |
Chemistry
|
Select the output \( Y \) of the combination
of gates shown in figure for inputs \( \boldsymbol{A}= \)
\( \mathbf{1}, \boldsymbol{B}=\mathbf{0} ; \boldsymbol{A}=\mathbf{1}, \boldsymbol{B}=\mathbf{1} \) and \( \boldsymbol{A}=\mathbf{0}, \boldsymbol{B}= \)
respectively.
A \( .(0,1,1) \)
в. (1,0,1)
c. (1,1,1)
D. (1,0,0)
| 3 |
Physics
|
The reading of poteniometer if \( 4 V \)
battery is used instead of \( e \), is
A \( .88 .3 \mathrm{cm} \)
в. \( 47.3 \mathrm{cm} \)
\( \mathrm{c} .95 \mathrm{cm} \)
D. cannot be calculated
| 3 |
Physics
|
Simplify: \( \left(-3 p q^{2}+4 p q\right)- \)
\( \left(7 p q-9 p q^{2}\right) \)
\( \mathbf{A} \cdot 6 p q^{2}+3 p q \)
B. \( 6 p q^{2}-3 p q \)
c. \( -12 p q^{2}+3 p q \)
D. \( -12 p q^{2}-3 p q \)
| 2 |
Maths
|
Which of the following is/are ionization?
1. \( \boldsymbol{H}_{\mathbf{2}} \boldsymbol{O} \longrightarrow \boldsymbol{H}^{+}+\boldsymbol{O} \boldsymbol{H}^{-} \)
2. \( \boldsymbol{H C l} \longrightarrow \boldsymbol{H}^{+}+\boldsymbol{C l}^{-} \)
A . Only 1
B. Only 2
c. Both 1 and 2
D. None of these
| 1 |
Chemistry
|
Parkinsonia and Australian Acacia
contains
A. Phylloclade
B. Winged fruitt
c. Parachute mechanism
D. Phyllode
| 0 |
Biology
|
What is the centripetal acceleration of the ball if its mass is doubled?
\( A \cdot a / 4 \)
B. a/2
\( c \)
D. 2a
E. \( 4 a \)
| 3 |
Physics
|
The size of a colloidal particle is:
\( A \cdot>0.1 \mu \)
в. \( 1 m \mu \) to \( 0.1 \mu \)
\( \mathbf{c} .<0.1 m \mu \)
D. More than \( 3000 m \) \mu
| 1 |
Chemistry
|
The introduction of contaminants into
the natural environment that cause
adverse change is called
A. Pollution
B. Emission
c. Greenhouse effect
D. None of above
| 1 |
Chemistry
|
Find the value of
\( (1+i)^{6}+(1-i)^{6} \)
| 2 |
Maths
|
Ramji sold an article at a loss of 8
percent. Had she bought it at \( 10 \% \) less
and sold for Rs. 72 more; she would have
gained \( 20 \% \). Find the cost price of the article.
A. 400
в. 450
c. 500
D. 550
| 2 |
Maths
|
How many grams of gas are present in a \( 2.2 L \) sample of gas if the gas has a density of \( 1.8 g / L ? \)
A. \( 1.22 g \)
в. \( 4.00 g \)
\( \mathbf{c} .3 .96 g \)
D. \( 0.02 g \)
| 1 |
Chemistry
|
Which can act as buffer?
A \( . N H_{4} C l+H C l \)
в. \( C H_{3} C O O H+H_{2} C O_{3} \)
c. \( 40 \mathrm{ml} \) of \( 0.1 \mathrm{M} \mathrm{NaCN}+20 \mathrm{ml} \) of \( 0.1 \mathrm{M} \mathrm{HCN} \)
D. \( N a C l+N a O H \)
| 1 |
Chemistry
|
Walking fern name is due to
A. Dispersal by animals
B. Reproduction by spores
c. vegetative reproduction
D. Power of locomotion
| 0 |
Biology
|
Ten cards numbered 1 through 10 are placed in a box, mixed up thoroughly and then one card is drawn randomly. If it is known that the number on the
drawn card is more than 3 , what is the
probability that it is an even number?
| 2 |
Maths
|
\( \lim _{x \rightarrow \infty}(\sqrt{x^{2}+8 x+3}- \)
\( \sqrt{x^{2}+4 x+3})= \)
A . 0
B. \( \infty \)
\( c \cdot 2 \)
D. \( \frac{1}{2} \)
| 2 |
Maths
|
Factorise the following expressions:
\( \boldsymbol{p}^{2}+\boldsymbol{6} \boldsymbol{p}+\boldsymbol{8} \)
A \( \cdot(p-2)(p+4) \)
в. \( (p+2)(p+4) \)
c. \( (p+2)(p-4) \)
D. \( (p-2)(p-4) \)
| 2 |
Maths
|
Find points on the curve \( \frac{x^{2}}{9}+\frac{y^{2}}{16}=1 \)
at which the tangents are
Parallel to \( x \) -axis are \( (a, \pm b) \).Find \( a+b \)
| 2 |
Maths
|
The property under multiplication used in each of the following.
\( \frac{-4}{5} \times 1=1 \times \frac{-4}{5}=-\frac{4}{5} \)
This question has multiple correct options
A. Commutative Property
B. Associative Property
c. Distributive Property
D. Identity Property
| 2 |
Maths
|
In the given figure, ABCD is a
parallelogram in which \( \angle D A B=75^{\circ} \)
and \( \angle \mathrm{DBC}=60^{\circ} \) then the measure of \( \angle \)
BDC is equal to?
\( A \cdot 75^{\circ} \)
B. \( 60^{\circ} \)
\( c \cdot 45^{\circ} \)
D. 55
| 2 |
Maths
|
A stone is dropped from a height equal to \( n R(R \) is the radius of the Earth)
from the surface of the Earth. The
velocity of the stone on reaching the surface of the Earth is :
A \( \cdot \sqrt{\frac{2 g(n+1) R}{n}} \)
в. \( \sqrt{\frac{2 g R}{n+1}} \)
c. \( \sqrt{\frac{2 g n R}{n+1}} \)
D. \( \sqrt{2 g n R} \)
| 3 |
Physics
|
The molecule having a non-zero dipole
moment is :
A. \( H_{2} O_{2} \)
в. \( C H_{4} \)
\( \mathbf{c} \cdot C_{2} H_{6} \)
D. \( B F_{4}^{-} \)
| 1 |
Chemistry
|
Disease aggravated by pollution is
A. Scurvy
B. Rheumatism
c. Haemophilia
D. Bronchitis
| 1 |
Chemistry
|
Which of the following is outer orbital complex?
\( \mathbf{A} \cdot\left[C o F_{6}\right]^{-3} \)
B. \( \left[C u\left(H_{2} O\right)_{6}\right]^{+2} \)
C. \( \left[\operatorname{Co}\left(N H_{3}\right)_{6}\right]^{+2} \)
D. All
| 1 |
Chemistry
|
Assertion
HClO\( _{4} \) is stronger acid than \( \boldsymbol{H} \boldsymbol{C l O}_{3} \)
Reason
Oxidation state of Cl in \( \boldsymbol{H} \boldsymbol{C l O}_{\mathbf{4}} \) is \( +\mathbf{V} \| \)
and in \( \boldsymbol{H} \boldsymbol{C l O}_{3} ; \) it is \( +\mathbf{V} \)
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
|
Give the decreasing order of reactivity of the following compounds with \( H B r \)
\( (\mathrm{I}) \)
\( \left.(\mathrm{II}) \mathrm{H}_{3} \mathrm{C}-\bigotimes\right\rangle \)
\( (\mathrm{III}) \mathrm{M}_{\mathrm{e}} \mathrm{O}-\langle\bigcirc\rangle \widehat{\mathrm{O}_{\mathrm{H}}} \)
\( (\mathbf{I V}) \)
| 1 |
Chemistry
|
Two particles of mass \( 1 \mathrm{kg} \) and \( 2 \mathrm{kg} \) are located at \( x=0 \) and \( x=3 \) m. Find the position of their center of mass.
\( A \cdot 4 m \)
B. 2 \( m \)
\( c \cdot 6 m \)
D. 8 m
| 3 |
Physics
|
The EMFs of the following cells are
\( \boldsymbol{C u}\left|\boldsymbol{C u}^{2+}(\mathbf{1} \boldsymbol{M}) \| \boldsymbol{A} \boldsymbol{g}^{+}(\mathbf{1} \boldsymbol{M})\right| \boldsymbol{A} \boldsymbol{g}, \boldsymbol{E}^{o}= \)
\( 0.46 V \)
\( Z n\left|Z n^{2+}(1 M) \| C u^{2+}(1 M)\right| C u, E^{o}= \)
\( 1.10 V \)
The EMF of the cell
\( Z n\left|Z n^{2+}\right|\left|A g^{+}(1 M)\right| A g \) will be:
A . \( 1.56 V \)
B . \( -1.56 V \)
c. \( 0.64 V \)
D. \( 2.02 V \)
| 1 |
Chemistry
|
A ray of light is normally incident on one face of an equilateral glass prism. What will be the angle of incidence at the second face of the prism?
A \( \cdot 0^{\circ} \)
B . \( 30^{\circ} \)
\( c \cdot 60^{\circ} \)
D. \( 90^{\circ} \)
| 3 |
Physics
|
Write the truth table for a NAND gate
connected as given in Figure.
| 3 |
Physics
|
The \( K_{a} \) value for the acid \( H A \) is \( 1.0 \times \)
\( 10^{-6} . \) What is the value of \( K \) for the
following reaction? \( \boldsymbol{A}^{+}+\boldsymbol{H}_{3} \boldsymbol{O}^{+} \rightleftharpoons \boldsymbol{H} \boldsymbol{A}+\boldsymbol{H}_{2} \boldsymbol{O} \)
A \( \cdot 1.0 \times 10^{-8} \)
В. \( 1.0 \times 10^{8} \)
C \( .1 .0 \times 10^{-3} \)
D \( .1 .0 \times 10^{6} \)
| 1 |
Chemistry
|
If \( a, b, c \) be in \( A P, \) and \( a^{2}, b^{2}, c^{2} \) are in \( H \)
\( P ., \) then
\( \mathbf{A} \cdot a+b=c \)
B. \( b+c=a \)
c. \( c+a=b \)
\( \mathbf{D} \cdot a b+b c+c a=0 \)
| 2 |
Maths
|
The sound of the human voice is
produced due to
A. movement of tongue
B. vibration in the pharynx
c. vibration in the vocal cord
D. vibration below tongue
| 3 |
Physics
|
A particle moves along the x-axis obeying the equation \( \boldsymbol{x}=\boldsymbol{t}(\boldsymbol{t}-\mathbf{1})(\boldsymbol{t}- \)
2), where \( x \) is in meter and \( t \) is in
second. Find the initial velocity of the particle \( (\boldsymbol{m} / \boldsymbol{s}) \)
| 2 |
Maths
|
Which of the following is the standard for atomic mass?
A \( \cdot \frac{1}{1} H \)
B . \( _{6}^{12} \mathrm{C} \)
\( \mathbf{c} \cdot \frac{i 4}{6} C \)
D. \( _{8}^{6} C \)
| 1 |
Chemistry
|
If \( n \geq 2 \) then the number of surjections
that can be defined from \( \{1,2,3, \dots n\} \) onto \{1,2\} is
A \( \cdot n^{2}-n \)
B \( \cdot n^{2} \)
\( c \cdot 2^{n} \)
D. \( 2^{n}-2 \)
| 2 |
Maths
|
A bullet fired into a block looses half of
its velocity after penetrating through a distance of \( 0.6 \mathrm{m} . \) Before coming to rest, the total distance traveled would be:
A . \( 0.8 \mathrm{m} \)
B. 1.2 \( m \)
\( c \cdot 1.6 m \)
D. 0.2 \( m \)
| 3 |
Physics
|
For the given circuit of \( \boldsymbol{p}-\boldsymbol{n} \) junction,
the potential barrier is :
A. Raised
B. Lowered
c. Remains same
D. Data insufficient
| 3 |
Physics
|
Find the additive inverse of the number \( \frac{2}{8} \)
| 2 |
Maths
|
Cell cycle was divided into four stages
i.e. \( G_{1}, S, G_{2}, M \) by
A. W. Flemming
B. Strass burger
c. Howard and Pelc
D. Farmer
| 0 |
Biology
|
Calculate the position of the centre of mass of a system consisting of two
particles of masses \( m_{1} \) and \( m_{2} \) separated by a distance L apart.
| 3 |
Physics
|
Nitrolium is used as fertiliser. Explain.
| 1 |
Chemistry
|
The area of quadrilateral ABCD given below is 269.2 sq.units
f true then enter 1 and if false then
enter \( \mathbf{0} \)
| 2 |
Maths
|
n given figure, express \( x \) in terms of \( a, b \)
and \( c \)
| 2 |
Maths
|
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