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Barometer can be used to forecast the
weather by checking pressure fluctuations. Type 1 for true and 0 for
false
| 3 |
Physics
|
In \( \triangle A B C, A C^{2}=A B^{2}+B C^{2}, \) then
right angle is at
| 2 |
Maths
|
Conjugate base of a strong acid is:
A. a weak base
B. a strong base
c. neutral
D. a weak acid
| 1 |
Chemistry
|
If radius of a sphere is doubled, how
many times its volume will be affected
A. 2 times
B. 4 times
\( c .6 \) times
D. 8 times
| 2 |
Maths
|
Give the structural formula of the
following.
1-Propanal
| 1 |
Chemistry
|
Which one of the following would not be limiting factor in photosynthesis?
\( A \cdot O_{2} \)
в. \( C O_{2} \)
c. chlorophyll
D. Light
| 0 |
Biology
|
How do ultraviolet rays coming from sun affect the living organisms?
| 0 |
Biology
|
Solve the following systems of equations:
\( \frac{1}{2 x}+\frac{1}{3 y}=2 \)
\( \frac{1}{3 x}+\frac{1}{2 y}=\frac{13}{6} \)
| 2 |
Maths
|
speed of \( 340 \mathrm{m} \mathrm{s}^{-1} \). The wavelength of
the wave is :
\( \mathbf{A} \cdot 1.5 \times 10^{5} m \)
B. 0.77 \( m \)
\( \mathbf{c} .1 .4 \mathrm{m} \)
D. 1.1
| 3 |
Physics
|
If the glancing angle of incidence is \( 30^{\circ} \) what will be the angle of incidence?
A . \( 30^{\circ} \)
B. \( 60^{\circ} \)
\( \mathrm{c} \cdot 90^{\circ} \)
D. \( 150^{\circ} \)
| 3 |
Physics
|
541
negligible resistance and radius \( a \). It is
hinged at the center of the ring and
rotated about this point in clockwise
direction with a uniform angular
velocity \( \omega . \) There is a uniform magnetic
field of strength \( B \) pointing inward and
\( r \) is a stationary resistance. Then
This question has multiple correct options
A. current through \( r \) is zero
B. current through \( r \) is \( \left(2 B \omega a^{2}\right) / 5 r \)
c. direction of current in external resistance \( r \) is from
center to circumference
D. direction of current in external resistance \( r \) is from
circumference to center
E. answer required
| 3 |
Physics
|
A pump is used to pump a liquid of
density \( \rho^{\prime} \) continuously through a pipe
of cross section area \( A \). If liquid is
flowing with speed \( V \), then power of
pump is:
A \( \cdot \frac{1}{3} \rho A V^{2} \)
B. \( \frac{1}{2} \rho A V^{2} \)
с. \( 2 \rho A V^{2} \)
D \( \cdot \frac{1}{2} \rho A V^{3} \)
| 3 |
Physics
|
\( \operatorname{Let} f(x)=\left\{\begin{array}{cc}x^{2} & x<1 \\ x & 1<x<4, \text { then } \\ 4-x & x>4\end{array}\right. \)
This question has multiple correct options
A \( \cdot \lim _{x \rightarrow 1^{-}} f(x)=1 \)
B. \( \lim _{x \rightarrow 1^{+}} f(x)=1 \)
\( \mathbf{c} \cdot \lim _{x \rightarrow 4^{-}} f(x)=4 \)
D. \( \lim _{x \rightarrow+4^{+}} f(x)=4 \)
| 2 |
Maths
|
A fair coin and an unbiased die are
tossed. Let \( A \) be the event 'head appears
on the coin' and \( B \) be the event '3 on the
die'. Check whether \( A \) and \( B \) are
independent events or not.
A. True
B. False
| 2 |
Maths
|
Give two examples of water soluble
vitamins.
| 1 |
Chemistry
|
Diaphragms are used by
A. Male
B. Females
c. Both A and B
D. None of the above
| 0 |
Biology
|
Bleaching powder is not used:
A. as a disinfectent
B. as a reducing agent
C . for bleaching purpose
D. for manufacturing chloroform
| 1 |
Chemistry
|
In the Ostwald's process for the
manufacture of \( \boldsymbol{H} \boldsymbol{N} \boldsymbol{O}_{3}, \) the catalyst
used is:
A . \( F e \)
в. \( P t \)
\( c \cdot V_{2} O_{5} \)
D. \( M o \)
| 1 |
Chemistry
|
Solve the following pairs of equations, graphically:
\( 2 x-3 y=-6 \) and \( x-\frac{y}{2}=1 \)
\( \mathbf{A} \cdot(3,2) \)
в. (3,3)
c. (4,4)
D. (3,4)
| 2 |
Maths
|
Identify the metal \( M \)
A. Calcium
B. Sodium
\( c . \) zinc
D. Iron
| 1 |
Chemistry
|
\( \left|\begin{array}{ccc}x^{2}+x & x+1 & x+2 \\ x^{2}+3 x-1 & 3 x & 3 x-3 \\ x^{2}+2 x+3 & 2 x-1 & 2 x-1\end{array}\right|= \)
\( A x+B \) where \( A \) and \( B \) are
determinants of order \( 3 . \) Then \( A+2 B \) is
equal to
| 2 |
Maths
|
Which of the following does not produce
\( \mathrm{H}_{2} \) at the anode on electrolysing using
Pt electrode?
This question has multiple correct options
A . molten CaH \( _{2} \)
B. \( N a C l(a q) \)
\( c \cdot \operatorname{cus} 0_{4}(a q) \)
D. \( \operatorname{dil} \mathrm{H}_{2} \mathrm{SO}_{4} \)
| 1 |
Chemistry
|
In spectrum obtained with prism which color is deviated maximum?
A . Violet
B. Redd
c. Green
D. orange
| 3 |
Physics
|
Assertion
In adiabatic process work is
independent of path.
Reason
In adiabatic process work done is equal to negative of change in internal energy.
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
|
Let \( f(x) \) be a function satisfying
\( f^{\prime}(x)=f(x)=e^{x} \) with \( f(0)=1 \) and
\( g(x) \) be a function that satisfies \( f(x)+ \)
\( g(x)=x^{2} . \) Then, the value of the integral \( \int_{0}^{1} f(x) g(x) d x \) is
\( ^{A} \cdot_{e}+\frac{e^{2}}{2}-\frac{3}{2} \)
B. \( _{e}-\frac{e^{2}}{2}-\frac{3}{2} \)
c. \( _{e}+\frac{e^{2}}{2}+\frac{5}{2} \)
D. \( _{e}-\frac{e^{2}}{2}-\frac{5}{2} \)
| 2 |
Maths
|
\( L, C \) and \( R \) represents the physical quantities, inductance, capacitance and resistance respectively. The
combinations which have the
dimensions of frequency are:
A. \( 1 / R C \)
в. \( R C / L \)
c. \( 1 / \sqrt{L R C} \)
D. \( C / L \)
| 3 |
Physics
|
If \( (x+3,4-y)=(1,7), \) then \( (x- \)
\( \mathbf{3}, \mathbf{4}+\boldsymbol{y}) \) is equal to
A \( \cdot(-2,-3) \)
в. (-5,1)
c. (3,4)
(年. \( (3,4)) \)
D. None of these
| 2 |
Maths
|
The Venn diagram shows the sets
\( \boldsymbol{\xi}, \boldsymbol{P}, \boldsymbol{Q} \) and \( \boldsymbol{R} \). Which of the following is
not true?
\( \mathbf{A} \cdot P \cap Q \neq \phi \)
в. \( R \subset Q \)
\( \mathbf{c} \cdot(P \cap R) \subset Q \)
D. \( (P \cap Q)=R \)
| 2 |
Maths
|
Write the units digit of the cube of 833
\( A \cdot 3 \)
B. 7
\( c .1 \)
D.
| 2 |
Maths
|
There is a transition from \( n=1 \) to \( n=2 \)
and then \( n=2 \) to \( n=3, \) then:
A. \( \Delta E \) values as well as frequency are additive
B. wave length as well as frequency are additive
c. \( \Delta E \) values as well as wavelength are additive
D. all of the parameters, \( (\Delta E, \) frequency and wave length are additive
| 1 |
Chemistry
|
Evolution of man took place in
A. Central Africa
B. Central Asia
c. Australia
D. America
| 0 |
Biology
|
Evaluate: \( \int \sec x \tan x d x \)
| 2 |
Maths
|
What is \( \Delta_{r} G(k J / \text { mole }) \) for synthesis of ammonia at \( 298 \mathrm{K} \) at following sets of
partial pressure :
\( N_{2}(g)+3 H_{2}(g) \rightleftharpoons \)
\( \mathbf{2} N \boldsymbol{H}_{3}(\boldsymbol{g}) ; \boldsymbol{\Delta}_{r} \boldsymbol{G}^{\circ}=-\mathbf{3 3} \boldsymbol{k} \boldsymbol{J} / \boldsymbol{m o l} \)
\( [\text { Take } \boldsymbol{R}=\mathbf{8 . 3} \boldsymbol{J} / \boldsymbol{K} \text { mole, } \log \mathbf{2}= \)
\( \mathbf{0 . 3} ; \log \mathbf{3}=\mathbf{0 . 4 8} \)
Gas \( \quad: N_{2} \quad H_{2} \quad N H_{3} \)
Pressure (atm) : 1
3
A \( .+6.5 \)
B . -6.5
c. +60.5
D. - 60.5
| 1 |
Chemistry
|
The half-life period of an 1st order reaction is 60 minutes. What
percentage will be left over after 240
minutes?
\( \mathbf{A} \cdot 6.25 \% \)
B. \( 4.25 \% \)
c. \( 5 \% \)
D. \( 6 \% \)
| 1 |
Chemistry
|
A point source of light, \( \mathrm{S} \) is placed at a distance \( L \) in front of the centre of plane mirror of width d which is hanging vertically on a wall. A man walks in front of the mirror along a line parallel to the mirror, at a distance \( 2 L \) as shown
below. The distance over which the man
can see the image of the light source in the mirror is :
A . \( 3 d \)
B. \( \frac{d}{2} \)
\( c \cdot d \)
D. \( 2 d \)
| 3 |
Physics
|
The M.I of a thin rod of length \( l \) about
the perpendicular axis trough its center
is \( I_{0} . \) The M.I of the square structure
made by four such rods about a perpendicular axis to the the plane and through the center will be :-
A \( .4 I_{0} \)
в. \( \frac{8}{3} I_{0} \)
c. \( \frac{4}{3} I_{0} \)
D. \( 6 I_{0} \)
| 3 |
Physics
|
Identify the odd one out:
Barium, Radium, Calcium, Francium
| 1 |
Chemistry
|
What is myopia? How does it occur? How can it be corrected? Explain with
figure.
| 3 |
Physics
|
Define Electromagnetism
A. The study of attraction or repulsion between two magnets is called electromagnetism
B. The study of electric effects due to magnetic interaction is called electromagnetism
C. The study of magnetic effects produced due to electric current is called electromagnetism
D. The study of magnetic effects produced due to electric charge is called electromagnetism
| 3 |
Physics
|
toppr
Q Type your question
graph correctly shows the momentum
of the blue object in each case. The red
graphs are all different.
Which graph best represents the
possible momentum of the red object before, during, and after the collision?
\( A \)
\( B \)
\( c \)
\( D \)
E
| 3 |
Physics
|
If a cathode ray tube has a potentia
difference \( V \) volt between the cathode
and anode, then the speed \( v \) of cathode
rays is given by:
A \( \cdot v \propto V^{2} \)
В. \( v \propto \sqrt{V} \)
\( ^{\mathrm{c}} \cdot_{v} \propto \frac{1}{V} \)
D. \( v \propto V \)
| 3 |
Physics
|
\( \frac{\pi}{4} \)
| 1 |
Chemistry
|
Find the eccentricity of an ellipse, if its
latus rectum be equal to one half its
minor axis.
| 2 |
Maths
|
\( N a_{2} S O_{3} \cdot x H_{2} O \) has \( 50 \% H_{2} O \) by mass.
Hence, \( x \) is:
A .4
B . 45
\( c \cdot 6 \)
D.
| 1 |
Chemistry
|
How is a pinnately compound leaf
different from a palmately compound
leaf?
| 0 |
Biology
|
Hydrogen peroxide is obtained by the electrolysis of
A. water
B. sulpharic acid
c. hydrochoric acid
D. fused sodium
| 1 |
Chemistry
|
If the area of the region bounded by the curves, \( \boldsymbol{y}=\boldsymbol{x}^{2}, \boldsymbol{y}=\frac{\mathbf{1}}{\boldsymbol{x}} \) and the lines
\( \boldsymbol{y}=\mathbf{0} \) and \( \boldsymbol{x}=\boldsymbol{t}(\boldsymbol{t}>\mathbf{1}) \) is \( \mathbf{1} \) sq. unit
then \( t \) is equal to?
A \( \cdot \frac{4}{3} \)
В. \( e^{2 / 3} \)
\( c \cdot \frac{3}{2} \)
\( \mathbf{D} \cdot e^{3 / 2} \)
| 2 |
Maths
|
If \( (5+2 \sqrt{6})^{n}=m+f \), where \( n \) and \( m \)
are positive integers and \( 0 \leq f<1 \)
then
\( \frac{1}{1-f}-f \) is equal to
A \( \cdot \frac{1}{m} \)
в. \( m \)
c. \( _{m+\frac{1}{m}} \)
D. \( _{m-} \frac{1}{m} \)
| 2 |
Maths
|
In simple distillation of liquids, it involves simultaneously.
A. Vaporisation and condensation
B. Heating and sublimation
c. vaporisation and sublimation
D. Boiling and filtration
| 1 |
Chemistry
|
Two charges \( 4 \mu C \) and \( 36 \mu C \) are placed \( 60 \mathrm{cm} \) apart. At what distance from the
larger charge is the electric field
intensity is zero?
| 3 |
Physics
|
Describe with the help of a diagram an
instrument which can be used to detect
a charged body.
| 3 |
Physics
|
Name the macromolecules that are
chosen as drug targets.
| 1 |
Chemistry
|
Consider a p-njunction as a capacitor, formed with \( p \) and \( n \) material acting as thin metal electrodes and depletion layer width acting as separation between them. Based on this,
assume that an n-p-n transistor is working as a amplifier in CE
configuration. If \( C_{1} \) and \( C_{2} \) be base-
emitter and collector-emitter
junction capacitances, then
A \( \cdot C_{1}>C_{2} \)
B. \( C_{1}<C_{2} \)
\( \mathbf{c} \cdot C_{1}=C_{2} \)
\( \mathbf{D} \cdot C_{1}=C_{2}=0 \)
| 3 |
Physics
|
If different values of variable \( x \) are
\( 9.8,5.4,3.7,1.7,1.8,2.6,2.8,8.6,10.5 a r \)
find the mean.
A . 5.8
B. 7.8
\( \mathrm{c} .9 .8 \)
D. None of these
| 2 |
Maths
|
The initial speed with which water flows out from the orifice in \( \mathrm{ms}^{-1} \) is \( \mathrm{g} \)
\( \left.=10 \mathrm{ms}^{-2}\right) \)
A . 10
B. 5
\( c \cdot 5 \cdot \sqrt{2} \)
D. \( 10 . \sqrt{2} \)
| 3 |
Physics
|
The multiple bonds that nitrogen forms
with itself are:
\( \mathbf{A} \cdot d \pi-d \pi \) bonds
В. \( d \pi-p \pi \) bonds
C. \( p \pi-p \pi \) bonds
D. none of the above
| 1 |
Chemistry
|
Sketch for \( \boldsymbol{y}=\cos ^{-1}\left(\frac{1-x^{2}}{1+x^{2}}\right) \)
| 2 |
Maths
|
If \( E_{1}, E_{2} \) and \( E_{3} \) are the respective kinetic energies of an electron, an alpha particle and a proton each having the same de Brogli wavelength then
A. \( E_{1}>E_{3}>E_{2} \)
B . \( E_{2}>E_{3}>E_{1} \)
c. \( E_{1}>E_{2}>E_{3} \)
D. \( E_{1}=E_{2}=E_{3} \)
| 3 |
Physics
|
Quiescent centre is found on
A. Root tip
B. Shoot tip
C. Floral tip
D. Leaf tip
| 0 |
Biology
|
In onion root tip during mitotic metaphase, the number of kinetochores
is
\( A \cdot 4 \)
B. 64
\( c \cdot 32 \)
D. 16
| 0 |
Biology
|
The energy of thermal neutrons is nearly
A \( .0 .25 \mathrm{eV} \)
B. \( 0.025 \mathrm{eV} \)
c. \( 200 \mathrm{MeV} \)
D. 0.025 Joule
| 3 |
Physics
|
State whether true or false:
When light falls on a prism the result can be magnification.
A. True
B. False
| 3 |
Physics
|
Match the following with reference to
Taenia solium.
List-I List-II
(A) Mehlis
(I) Tegument formation glands
(B) Vitelline
(II) Osmoregulation and gland excretion
\( (C) \)
(III) Lubricate passage of Mesenchymal capsules into uterus cel
(D) Flame
(IV) Secretion of embryophore cells
(V) Capsule formation around zygote
\( A \cdot A-(111), B-(V), C-(11), D-(1 V) \)
B. \( A-(V), B-(1), C-(11), D-(I V) \)
C \( \cdot A-(\mid V), B-(|I|), C-(1), D-(\mid I) \)
D. \( A-(111), B-(V), C-(1), D-(11) \)
| 0 |
Biology
|
\( H_{2} S \) a toxic gas with rotten egg like smell is used for the qualitative
analysis. If the solubility of \( H_{2} S \) in
water at STP is \( 0.195 m \), calculate
Henry's law constant.
| 1 |
Chemistry
|
Find the mode of the following
distribution
\begin{tabular}{llllll}
Daily & \( 31- \) & \( 37- \) & \( 43- \) & \( 49- \) & 55 \\
Wages & 36 & 42 & 48 & 54 & 6 \\
No. of workers & 6 & 12 & 20 & 15 & 9 \\
\hline
\end{tabular}
\( \mathbf{A} \cdot 48.5 \)
B. 47.5
c. 46.2
D. 48.3
| 2 |
Maths
|
Read the following information and answer the three items that follow:
Let \( \boldsymbol{f}(\boldsymbol{x})=\boldsymbol{x}^{2}+\boldsymbol{2} \boldsymbol{x}-\boldsymbol{5} \) and \( \boldsymbol{g}(\boldsymbol{x})= \)
\( 5 x+30 \)
What are the roots of the equation
\( \boldsymbol{g}[\boldsymbol{f}(\boldsymbol{x})]=\mathbf{0} ? \)
A . 1,-1
B. -1,-1
\( c .1,1 \)
D. 0,1
| 2 |
Maths
|
Solve by factorization \( \sqrt{\mathbf{3}} \boldsymbol{x}^{2}+\mathbf{1 1} \boldsymbol{x}+ \)
\( \mathbf{6} \sqrt{\mathbf{3}}=\mathbf{0} \)
| 2 |
Maths
|
Gurpreet bought a cycle for Rs. \( \mathbf{7 5 0 . 0 0} \)
The transport charges were Rs. 10. If he
sold the cycle for Rs. 798 , find his gain or loss.
| 2 |
Maths
|
\( \boldsymbol{A}=\left[\begin{array}{ccc}\mathbf{1} & \mathbf{2} & \mathbf{3} \\ \mathbf{1} & \mathbf{2} & \mathbf{3} \\ \mathbf{- 1} & \mathbf{- 2} & \mathbf{- 3}\end{array}\right], \) then A is a
nilpotent matrix of index
\( A \)
B. 3
\( c \cdot 4 \)
D. 5
| 2 |
Maths
|
By which smallest number must the
following numbers be divided so that the quotient is a perfect cube?
\( \mathbf{3 5 7 2 1} \)
| 2 |
Maths
|
If Leah is 6 years older than Sue and
John is 5 years older than Leah and the total of their ages is \( 41 . \) Then how old is
Sue?
A . 8
B. 10
c. 14
D. 19
E . 21
| 2 |
Maths
|
Evaluate the following integral
\( \int \frac{1}{x(3+\log x)} d x \)
| 2 |
Maths
|
Compound X has the molecular formula
\( \boldsymbol{C}_{3} \boldsymbol{H}_{\boldsymbol{6}} \boldsymbol{O}_{3} \)
Heating X under reflux with acidified
\( K_{2} C r_{2} O_{7} \) forms \( H O_{2} C C O C O_{2} H \)
Reacting \( X \) with \( N a B H_{4} \) forms
\( \boldsymbol{H} \boldsymbol{O} \boldsymbol{C} \boldsymbol{H}_{2} \boldsymbol{C} \boldsymbol{H}(\boldsymbol{O} \boldsymbol{H}) \boldsymbol{C} \boldsymbol{H}_{2} \boldsymbol{O} \boldsymbol{H} \)
What is a possible structural formula
for \( X ? \)
1. \( \boldsymbol{H} \boldsymbol{O} \boldsymbol{C} \boldsymbol{H}_{2} \boldsymbol{C} \boldsymbol{H}_{2} \boldsymbol{C} \boldsymbol{O}_{2} \boldsymbol{H} \)
2. \( \boldsymbol{H} \boldsymbol{O} \boldsymbol{C} \boldsymbol{H}_{2} \boldsymbol{C H}(\boldsymbol{O} \boldsymbol{H}) \boldsymbol{C H O} \)
3. \( \boldsymbol{H} \boldsymbol{O} \boldsymbol{C} \boldsymbol{H}_{2} \boldsymbol{C O C H}_{2} \boldsymbol{O H} \)
A. 1,2 and 3 are correct
B. 1 and 2 only are correct
c. 2 and 3 only are correct
D. 1 only is correct
| 1 |
Chemistry
|
Draw a labeled ray diagram of a refracting telescope. Define its magnifying power and write the
expression for it. Write two important limitation of a refracting telescope over a reflecting type telescope
| 3 |
Physics
|
A cell of emf \( \boldsymbol{E} \) Volt with no internal
resistance is connected to a wire whose
cross section changes. The wire has
three sections of equal length. The
middle section has a radius \( a \), whereas
the radius of the outer two sections is
2a. The ratio of the potential difference
across section \( A B \) to the potential
difference across section \( C A \) is :
\( A \)
B. 4
\( c \cdot \frac{1}{2} \)
D.
| 3 |
Physics
|
For n moles of gas Vander waal's equation is \( \left(\boldsymbol{P}-\frac{\boldsymbol{a}}{\boldsymbol{V}^{2}}\right)(\boldsymbol{V}-\boldsymbol{b})=\boldsymbol{n} \boldsymbol{R} \boldsymbol{T} \)
Find the dimensions of a and b, where \( \mathrm{P} \)
is gas pressure, \( V= \) volume of gas \( T= \) temperature of gas
| 3 |
Physics
|
The system that forms maximum boiling azeotrope is :
A. acetone-chloroform
B. ethanol- acetone
C. n-hexane- n- heptane
D. carbon disulphide - acetone
| 1 |
Chemistry
|
If a conducting rod \( A B \) placed in a uniform magnetic field pointing in positive z-direction (as shown in figure), moves parallel to y-axis, then
end \( A \) of the rod will be
A. Neutral
B. Positively charged
c. Negatively charged
D. None of these
| 3 |
Physics
|
In a class \( 25 \% \) of the total students are
absent. If 45 students are presents, then what is the total strength of the class.
| 2 |
Maths
|
Number of bonding electrons and anti-
bonding electrons in \( 2 p \) MO of \( N_{2} \)
molecule are respectively:
A .6,2
в. 4,0
c. 6,0
D. 4,2
| 1 |
Chemistry
|
Write chemical equation to represent the most probable outcome in the following reaction and choose the
correct option.
\[
\boldsymbol{C d C O}_{3} \stackrel{\boldsymbol{\Delta}}{\rightarrow}
\]
A \( \cdot \mathrm{CdCO}_{3} \stackrel{\Delta}{\longrightarrow} \mathrm{Cd} \mathrm{O}+\mathrm{CO}_{2} \)
в. \( 2 \mathrm{CdCO}_{3} \) 오 \( 2 \mathrm{CdO}+2 \mathrm{CO}+\mathrm{O}_{2} \)
c. No reaction
D. None of these
| 1 |
Chemistry
|
Consider the following steps \( C u S \stackrel{\text {roastin air}}{\rightarrow} \)
\( (A) \)
\( \stackrel{\text {roast without ai}}{\rightarrow} \)
Which of the one is not the
correct statement?
A. It is self-reduction
B. It involves disproportionation \( C u_{2} S \rightarrow C u+C u S \)
\( c \cdot(A) \) is a mixture of \( C u_{2} \) Oand \( C u \) and
(B) is a mixture of
\( C u \) and \( S O_{2} \)
D. All are incorrect statement
| 1 |
Chemistry
|
One of the reaction that takes place in
producing steel from iron ore is the reduction of iron(ll) oxide by carbon
monoxide to give iron metal and \( C O_{2} \)
\( \boldsymbol{F e O}(\boldsymbol{s})+\boldsymbol{C O}(\boldsymbol{g}) \rightleftharpoons \boldsymbol{F} \boldsymbol{e}(\boldsymbol{s})+\boldsymbol{C O}_{2}(\boldsymbol{g}) \)
\( \boldsymbol{K}_{\boldsymbol{P}}=\mathbf{0 . 2 6 5} \) at \( \boldsymbol{m} \) at \( \mathbf{1 0 5 0} \boldsymbol{K} . \) What are
the equilibrium partial pressures of \( \mathrm{CO} \)
and \( C O_{2} \) respectively at \( 1050 \mathrm{K} \) if the
initial partial pressures are: \( \boldsymbol{p}_{c o}= \)
1.4 atm and \( p_{c o_{2}}=0.80 \) atm?
A \( \left.\cdot\left[P_{C O}\right]=1.739 \text { at } m \text { and } P_{C O_{2}}\right]=0.461 \) at
B . \( \left[P_{C O}\right]=17.39 a t m \) and \( P_{C O_{2}}=0.461 a t m \)
C \( \left.\cdot\left[P_{C O}\right]=1.79 \text { at } m \text { and } P_{C O_{2}}\right]=0.46 \) at \( m \)
D . \( \left.\left[P_{C O}\right]=2.739 \text { at } m \text { and } P_{C O_{2}}\right]=1.461 \) at
| 1 |
Chemistry
|
What is van't Hoff factor of aqueous
phosphate solution? (assume \( 100 \% \) ionise).
| 1 |
Chemistry
|
\( \int \frac{1}{x-2} d x \)
| 2 |
Maths
|
Find the radius of nucleus of an atom
having atomic mass number equal to
125. \( \left(\text { Take } \boldsymbol{R}_{0}=\mathbf{1 . 3} \times \mathbf{1 0}^{-\mathbf{1 5}} \boldsymbol{m}\right) \)
| 1 |
Chemistry
|
Match the column.
| 1 |
Chemistry
|
The sugar and purine rings are connected at which carbons?
A . 1,3
в. 1,6
\( \mathrm{c} .1,9 \)
D. 5,9
| 1 |
Chemistry
|
A Ge specimen is doped with \( A l \). The
concentration of acceptor atoms is \( \sim \) \( 10^{21} \) atoms \( / m^{3} . \) Given that the intrinsic
concentration of electron-hole pairs is \( \sim 10^{19} / m^{3}, \) the concentration of
electrons in the specimen is
\( \mathbf{A} \cdot 10^{17} / m^{3} \)
B . \( 10^{15} / m^{3} \)
c. \( 10^{4} / m^{3} \)
D. \( 10^{2} / m^{3} \)
| 3 |
Physics
|
Which of the following statement is incorrect?
A. Average temperature decreases progressively form plains to the mountain tops
B. Average temperature decreases progressively form the equator towards the poles
c. Temperature affects the kinetic of enzymes and through it the basal metabolism of organism
D. None of these
| 0 |
Biology
|
Two particle \( P \) and \( Q \) are executing
simple harmonic motion with equal amplitude and frequency. At a distance of half the amplitude one of them is moving away from the mean position while the other is observed at a
distance half the amplitude to be
moving towards mean position as
shown in figure. The phase difference between them is:
\( A \cdot \frac{\pi}{2} \)
в. \( \frac{\pi}{3} \)
c. \( \frac{4 \pi}{3} \)
D. \( \frac{\pi}{6} \)
| 3 |
Physics
|
Water turns anhydrous copper sulphate solution in the carbon-hydrogen detection experiment:
A. brown
B. red
c. blue
D. green
| 1 |
Chemistry
|
A coin is tossed three times, where
(i) \( E: \) head on third toss, \( F: \) heads on
first two tosses
(ii) \( E: \) at least two heads, \( F: \) at most
two heads
(iii) \( E: \) at most two tails, \( F: \) at least
one tail.
| 2 |
Maths
|
Write the IUPAC Name of the following
structure
\[
\begin{array}{rl}
\mathbf{C H}_{3}-\underset{\mathbf{U}}{\mathbf{O}} \mathbf{H}-\mathbf{C} \mathbf{H}-\mathbf{C} \mathbf{H}-\mathbf{C} \mathbf{H}_{3} \\
\mathbf{O} \mathbf{H} & \mathbf{O} \mathbf{H}
\end{array}
\]
| 1 |
Chemistry
|
In a beaker containing colloidal solution of sodium thiosulphate and a drop of con. sulphuric acid, light observed from side of beaker is:
A. Blue
B. Red
c. Green
D. Yellow
| 3 |
Physics
|
Which of the following statements are
not true?
This question has multiple correct options
A. All charges at rest tend to move higher electric potential to lower electric potential
B. All charges at rest tend to move lower electric potential to higher electric potential
C. Positive charges at rest tend to move form lower electric potential to higher electric potential and negative charges at rest tend to move from higher electric potential to lower electric potential
D. Positive charges at rest tend to move from higher potential to lower potential and negative charges at rest tend to move from lower electric potential to higher potential
| 3 |
Physics
|
In YDSE, let \( A \) and \( B \) be two slits. Films
of thicknesses \( t_{A} \) and \( t_{B} \) and refractive
indices \( \mu_{A} \) and \( \mu_{B} \) are placed in front of
\( A \) and \( B, \) respectively. If \( \mu_{A} t_{A}=\mu_{B} t_{B} \)
then the central maxima will :
A. Not shift
B. Shift toward \( A \)
c. shift toward \( B \)
D. (b) if \( t_{B}>t_{A} \) and (c) if \( t_{B}<t_{A} \)
| 3 |
Physics
|
How are dots arranged in cells of Braille
system?
A. Arranged in cells of two vertical rows of three dots each
B. Arranged in cells of three vertical rows of three dots each
c. Arranged in cells of two vertical rows of two dots each
D. Arranged in four vertical rows of two dots each
| 3 |
Physics
|
At \( 283 \mathrm{K} \) a saturated solution of solid \( \mathrm{X} \)
can be prepared by dissolving 21.0 g of it in 100 g of water. The maximum amount of \( X \) which can be dissolved in 100 g of water at \( 313 \mathrm{K} \) is \( 62.0 \mathrm{g} \). An attempt is made to dissolve 50.0 g of \( X \) in 100 g of water at \( 313 \mathrm{K} \)
. All the 50.0 g of \( X \) will dissolve at 313 K.
2. At \( 313 \mathrm{K} 29.0 \mathrm{g} \) of \( \mathrm{X} \) will remain undissolved.
3. Solubility of X decreases with an
increase in temperature.
4. On cooling the solution of \( X \) from 313 \( \mathrm{K} \) to \( 283 \mathrm{K} \) more than \( 21.0 \mathrm{g} \) of \( \mathrm{X} \) will crystallize out.
Which of the following statement are
correct?
A \( . \) and 2
B. 1 and 4
\( c \cdot 2 \) and 3
D. 1,3 and 4
| 1 |
Chemistry
|
Maize, Sugarcane and some other tropical plants have high efficiency of
\( C O_{2} \) fixation because they operate
A. Calvin cycle
B. Hatch-Slack cycle
c. TcA cycle
D. PP pathway
| 0 |
Biology
|
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