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The acceleration of a charged particle in a uniform electric field is : (where specific
charge of a particle \( \left.=\frac{q}{m}\right) \)
A. proportional to its charge only
B. inversely proportional to its mass only
C. proportional to its specific charge
D. inversely proportional to specific charge | 3 | Physics |
topp 5
Q Type your question
\( \mathbf{B} \)
\( r \)
D | 3 | Physics |
If a starfish is cut into pieces, each piece grow into a complete animal. The process is called-
A. Regeneration
B. Reproduction
c. Healing of wounds
D. Growth | 0 | Biology |
For two events \( \boldsymbol{A} \) and \( \boldsymbol{B} \) if \( \boldsymbol{P}(\boldsymbol{A})= \)
\( P\left(\frac{A}{B}\right)=\frac{1}{4} \) and \( P\left(\frac{B}{A}\right)=\frac{1}{2}, \) then
A. \( A \) is subevent of \( B \)
B. \( A \) and \( B \) are mutually exclusive
\( ^{\mathrm{c}},_{A} \) and \( B \) independent and \( P\left(\frac{A^{\prime}}{B}\right)=\frac{3}{4} \)
D. None of these | 2 | Maths |
Find: \( \int x^{2} \cdot \log x d x \) | 2 | Maths |
State true or false
A probability experiment was conducted. Following number is considered as a probability of an outcome?
\( \mathbf{1 . 4 5} \)
A. True
B. False | 2 | Maths |
Suppose that \( f \) is differentiable
function with the property \( \boldsymbol{f}(\boldsymbol{x}+\boldsymbol{y})= \)
\( f(x)+f(y)+x^{2} y^{2} \) and
\( \lim _{x \rightarrow 0} \frac{f(x)}{x}=10 \) then \( f^{\prime}(0) \) is equal
to | 2 | Maths |
\( \mathbf{A} \)
D.C. generator is based on the
principle of
A. magnetic effect ofcurrent
B. lighting effect ofcurrent
c. electrochemical induction
D. electromagnetic induction | 3 | Physics |
Why is it advised to tie any luggage kept on the roof of a bus with a rope? | 3 | Physics |
Define the following term of the circle. Chord | 2 | Maths |
A body of mass \( 4 \mathrm{kg} \) is acted on by a
force which varies as shown in the
graph below. Find the change in
momentum that this body undergoes.
A. 280 Ns
B. 140 Ns
c. \( 70 \mathrm{Ns} \)
D. 210 Ns | 3 | Physics |
\( K_{2} C r_{2} O_{7} \) turns starch iodide paper to
blue colour.
If this is true enter 1 , if false enter 0 . | 1 | Chemistry |
Establish the formula for intensity of magnetic field at the centre of a current carrying circular coil. | 3 | Physics |
Two different coils have self inductance
\( \boldsymbol{L}_{1}=\mathbf{8} \boldsymbol{m} \boldsymbol{H} \) and \( \boldsymbol{L}_{2}=\boldsymbol{2 m} \boldsymbol{H} . \) The
currents in both are increasing at the
same constant rate. At a certain instant
of time, the power given to the two coils
is the same. At this moment the
current, the induced voltage and energy
stored in the first coil are \( i_{1}, V_{1} \) and \( U_{1} \)
respectively. The corresponding values
in the second coil are \( i_{2}, V_{2} \) and \( U_{2} \) respectively. Then the values of \( \frac{i_{1}}{i_{2}}, \frac{V_{1}}{V_{2}} \) and \( \frac{\boldsymbol{U}_{1}}{\boldsymbol{U}_{2}} \) are respectively:
A \( \cdot \frac{1}{4}, 4, \frac{1}{4} \)
в. \( 4, \frac{1}{4}, \frac{1}{4} \)
c. \( \frac{1}{4}, \frac{1}{4}, 4 \)
D. \( _{4,4, \frac{1}{4}} \) | 3 | Physics |
Which of the following statement is not
correct?
A. All metal are solids at room temperature.
B. All metal are good conductors of heat and electricity.
C. All metal form basic oxides.
D. All metal possess lustre when freshly prepared. | 1 | Chemistry |
Which of the following aqueous solutions should have the highest boiling point?
A. \( 1.0 M \) NaOH
в. \( 1.0 M \) Na\( _{2} \) SO \( _{4} \).
с. \( 1.0 M \) NH\( _{4} N O_{3} \) | 1 | Chemistry |
Gems and rubies, coloured glass are solid in solid type colloids.
Enter 1 if true else enter 0 . | 1 | Chemistry |
The figure shows the velocity (v) of a
particle plotted against time (t)
This question has multiple correct options
A. the particle changes its direction of motion at some point
B. the acceleration of the particle remains constant
c. the displacement of the particle is zerc
D. the initial and final speeds of the particle are the | 3 | Physics |
The adjacent graph shows the extension
(1) of a wire of length \( 1 \mathrm{m} \) suspended from the top of a roof at one end and
with load 'W' connected to the other end.
If the cross-sectional area of the wire is
\( 10^{-6} m^{-2}, \) calculate the Young modulus
of the material of the wire:
A \( \cdot 2 \times 10^{-11} \)
В. \( 2 \times 10^{10} \)
\( c \cdot 2 \times 10^{11} \)
D. \( 2 \times 10^{-10} \) | 3 | Physics |
A boat is sailing at a velocity \( 3 \hat{i}+4 \hat{j} \) with respect to ground and water in river is flowing with a velocity \( -3 \hat{i}-4 \hat{j} \)
Relative velocity of the boat with respect to water is :-
\( A \cdot 8 \hat{3} \)
B . \( 5 \sqrt{2} \hat{j} \)
c. \( 6 \hat{i}+8 \hat{j} \)
D. \( -6 \hat{i}-8 \hat{j} \) | 3 | Physics |
Radius of nucleus may be given as \( \boldsymbol{R}_{N}=\boldsymbol{R}_{0} \cdot \boldsymbol{A}^{1 / 3}, \) where \( \boldsymbol{A}= \)
massnumber and \( R_{0}= \) Constant
Calculate the density of nucleus of an
atom if \( \boldsymbol{R}_{0}=\mathbf{1 . 2} \times \mathbf{1 0}^{-\mathbf{1 5}} \)
\( \left[N_{A}=6 \operatorname{times} 10^{23} \times 8 \pi \times(1.2)^{3}=\right. \)
\( \mathbf{1 0 0 0} \) | 1 | Chemistry |
\( \boldsymbol{C C l}_{4} \rightleftharpoons \boldsymbol{C}+\mathbf{2 C l}_{2} \)
The equilibrium constant \( p K \) for the given reaction at \( 700^{0} C \) is 0.76 atm.
The initial pressure of carbon tetrachloride that will produce a total equilibrium pressure of 1.20 atm at
\( \mathbf{7} \mathbf{0 0}^{\mathbf{o}} \mathbf{C} \) is:
A. 0.22 atm
B. 0.44 atm
c. 0.84 atm
D. 0.11 atm | 1 | Chemistry |
Points \( A, B, C \) and \( D \) are midpoints of
the sides of square \( J \) ETS. If the area of
JETS is 36 sq.cm, then the area of
\( A B C D \) is
A. 3 sq. cm
B. 7.5 sq. \( \mathrm{cm} \)
c. 9 sq. cm
D. 18 sq. cm | 2 | Maths |
Solution set of \( \left|\begin{array}{ccc}\boldsymbol{x} & \boldsymbol{3} & \boldsymbol{5} \\ \boldsymbol{2} & \boldsymbol{6} & \boldsymbol{1 0} \\ \boldsymbol{7} & \boldsymbol{2 1} & \boldsymbol{3 5}\end{array}\right|=0 \)
\( A \cdot \phi \)
B. (1)
\( c . R \)
D. (0) | 2 | Maths |
Give reasons for the \( H_{2} O \) is less acidic
\( \operatorname{than} \boldsymbol{H}_{2} \boldsymbol{S} \) | 1 | Chemistry |
Number of chiral centers in maltose are | 1 | Chemistry |
Find the domain and range of each of the following real value functions:
\( \boldsymbol{f}(\boldsymbol{x})=-|\boldsymbol{x}| \) | 2 | Maths |
According to Bernoulli's equation the
expression which remains constant is:
\( ^{\mathbf{A}} \cdot p+\frac{\rho v^{2}}{2} \)
\( ^{\mathbf{B}} P+\frac{\rho v^{2}}{2}-\rho g h \)
\( \mathbf{c} \cdot P+\rho g h \)
\( P+\rho g h+\frac{\rho v^{2}}{2} \) | 3 | Physics |
Which of the following statements are
correct?
A \( . \Delta H \) is a state function
B. Value of \( \Delta H \) is independent of path taken
c. \( \Delta H \) can be determined under standard condition
D. All of the above | 1 | Chemistry |
For the formation of \( M g C l_{2}, \) which of
the followings are correct? This question has multiple correct options
A. \( M g \) loses two electrons
B. each \( C l \) atom gains 2 electrons
c. each \( C l \) atom gains one electron
D. \( M g \) and \( C l \) shares electron to gain stable octet configuration | 1 | Chemistry |
The number of ways in which the letters
of the word \( A R R A N G E \) can be
permuted such that the \( R \) 's occur together is
A. \( \frac{7 !}{2 ! 2 ! ! !} \)
в. \( \frac{7 !}{2 !} \)
c. \( \frac{6 !}{2 !} \)
D. \( 5 ! \times 2 ! \) | 2 | Maths |
Find the equation of the set of points which are equidistant from the points (1,2,3) and (3,2,-1) | 2 | Maths |
If the products of ozonolysis are acetone
and formaldehyde, what is the initial compound?
\( A \)
в.
c.
D. | 1 | Chemistry |
The heat developed in a system is proportional to the current through it.
Then
A. it cannot be Thomson heat.
B. it cannot be Peltier heat
c. it cannot be Joule heat.
D. it can be any of the three heats mentioned above | 3 | Physics |
A parallelogram with a pair of the consecutive sides equal, is a
A . square
B. rectangle
c. rhombus
D. circle | 2 | Maths |
The following ratio is generally constant for a given species :-
\( A \cdot T+C / G+A \)
B. \( G+C / A+T \)
c. \( A+C / T+G \)
D. A + G / C +T | 0 | Biology |
When Boron nucleus \( \left(_{5}^{10} B\right) \) is
bombarded by neutrons, \( \boldsymbol{\alpha}- \) particles
are emitted. The resulting nucleus is of the element and has the
mass number
A. \( L i, 7 . \)
B. \( L i, 8 . \)
c. \( N a, 7 \)
D. \( L i, 9 . \) | 3 | Physics |
The position of a particle along along \( x \) axis is given by \( x=a+b t^{2}, \) where \( a= \)
\( 8.5 \mathrm{m}, \mathrm{b}=2.5 \mathrm{m} \) and \( t \) is in seconds.
What is its average velocity at \( t=2.0 \) s? What will be its average velocity between \( t=2 s \& t=4 s ? \) | 3 | Physics |
The second ionization energies among Li. Be. \( B \) and \( C \) s lowest for
\( \mathbf{A} \cdot L i \)
в. \( B e \)
\( c . B \)
D. \( C \) | 1 | Chemistry |
Explain sewage treatment | 0 | Biology |
In a first-order reaction \( \boldsymbol{A} \rightarrow \boldsymbol{B} \), if k is
rate constant and initial concentration
of the reactant \( A \) is 0.5 M then the half-
life is:
A \( \cdot \frac{\ln 2}{k} \)
в. \( \frac{0.693}{0.5 k} \)
c. \( \frac{\log 2}{k} \)
D. \( \frac{\log 2}{k \sqrt{0.5}} \) | 1 | Chemistry |
The energy possessed by coal, petroleum and natural gas is called
A. kinetic energy
B. potential energy
c. chemical energy
D. hydro energy | 3 | Physics |
The law of electromagnetic induction has been used in the construction of
A. Generator
B. Electric motor
c. Galvanometer
D. None of these | 3 | Physics |
After the period of how many days half moon can be seen?
A. 7 or 22 days
B. 1 or 30 days
c. 15 days
D. 10 or 17 days | 3 | Physics |
For a journey the cost of a child ticket is
\( \frac{1}{3} \) rd of the cost of an adult ticket. If the
\( \operatorname{cost} \) of tickets for 4 adults and 5
children is Rs. 85 , the cost of a child
ticket is
A. Rs.
B. Rs. 6
c. Rs. 10
D. Rs. 15 | 2 | Maths |
Mention any two differences between
soap and synthetic detergent. | 1 | Chemistry |
Out of the total number of student who
opted for the given three subject, in the
year \( 2009,38 \% \) were girls. How many
boys opted for mathematics in the
same year?
\( \mathbf{7} \)
\( \mathbf{M}_{\mathbf{a}} \)
\( \mathbf{A} \cdot 1322 \)
B. 1332
\( \mathbf{c} \cdot 1312 \)
D. Cannot be determined
E. None of these | 2 | Maths |
For the discontinuous function given
below, find the value of \( \boldsymbol{f}(-\mathbf{3}) \) \( \boldsymbol{f}(\boldsymbol{x})=\left\{\begin{array}{ll}\boldsymbol{x}^{2}+\mathbf{1}, & \boldsymbol{i f} \quad \boldsymbol{x}<\mathbf{0} \\ \frac{\boldsymbol{2} \boldsymbol{x}}{\mathbf{3}}-\mathbf{1}, & \boldsymbol{i f} \quad \boldsymbol{0}<\boldsymbol{x}<\mathbf{3} \\ \boldsymbol{4}-\boldsymbol{x}, & \boldsymbol{i f} \quad \boldsymbol{x}>3\end{array}\right. \)
\( A \cdot-3 \)
B.
\( c \cdot 10 \)
D. - 3, 7, and 10 | 2 | Maths |
Monds process is used for the
purification of | 1 | Chemistry |
What is the importance of plasma
proteins? | 0 | Biology |
Two waves of intensities \( I \) and \( 4 I \)
superimpose. The minimum and maximum intensities will respectively
be
A. \( I, 9 I \)
B. \( 3 I, 5 I \)
c. \( I, 5 I \)
D. None of these | 3 | Physics |
A can is taken out from a refrigerator at
\( 0^{\circ} \mathrm{C} . \) The atmospheric temperature is
\( 25^{\circ} \mathrm{C} . \) If \( t_{1} \) is the time taken to heat from
\( 0^{\circ} \mathrm{C} \) to \( 5^{\circ} \) and \( t_{2} \) is the time taken from
\( 10^{\circ} \mathrm{C} \) to \( 15^{\circ} \mathrm{C}, \) then
A \( \cdot t_{1}>t_{2} \)
в. \( t_{1}<t_{2} \)
c \( \cdot t_{1}=t_{2} \)
D. There is no relation | 3 | Physics |
Significantly higher level of urea in the blood is the indication of
A. Liver damage
B. Kidney damage
c. Heart attack
D. spleen damage | 0 | Biology |
In how many different ways can the
letters of the word \( ^{\prime} L E A D I N G^{\prime} \) be
arranged such that all the consonants are together?
\( \mathbf{A} \cdot 576 \)
в. 625
\( c \cdot 676 \)
D. 720 | 2 | Maths |
\( 1.3+3.5+5.7+\ldots+(2 n-1)(2 n+1)= \)
\( \frac{n\left(4 n^{2}+6 n-1\right)}{3} \) | 2 | Maths |
State which of the following are equations (with a variable ). Give reason
for your answer. Identify the variable from the equations with a variable. \( \frac{4}{2}=2 \) | 2 | Maths |
Write main differences between the
properties of white phosphorus and red phosphorus. | 1 | Chemistry |
The single-celled organisms are called | 0 | Biology |
The lines of symmetry of a \( -\ldots---- \) are the lines joining the mid-points of the opposite sides.
A. square
B. triangle
c. rectangle
D. isosceles | 2 | Maths |
Evaluate: \( \int e^{x}(\tan x+\log (\sec x)) d x \) | 2 | Maths |
Which features are characteristic of
insect-pollinated flowers?
A. Bright petals, large feathery stigmas
B. Bright petals, rough sticky pollen
c. Large feathery stigmas, nectaries
D. Small light pollen, nectarines | 0 | Biology |
State True or False.
Magnetic lines of force do not intersect
A. True
B. False | 3 | Physics |
The number of terms whose values
depends on \( x \) in the expansion of \( \left(x^{2}-2+\frac{1}{x^{2}}\right)^{n} \) is
\( \mathbf{A} \cdot 2 n+1 \)
B. \( 2 n \)
\( c \)
D. none of these | 2 | Maths |
An element with a mass number of 81
contains \( 31.7 \% \) more neutrons as compared to protons. Identify the element.
A. Sç
B. Ва
\( c \cdot B r \)
\( D \) | 1 | Chemistry |
The simplified value of \( \frac{1+i}{1-i} \) is
\( \mathbf{A} \cdot \mathbf{1} \)
в.
\( c \cdot-i \)
D. \( 2 i \) | 2 | Maths |
Let \( n_{1}, n_{2}, n_{3} \dots \) are the frequencies of
segments of a stretched string, then the frequency \( n \) of the string can be given
by
A \( \cdot n=n_{1}+n_{2}+n_{3}+\dots \)
B. \( n=\sqrt{n_{1} \times n_{2} \times n_{3} \times \ldots} \)
c. \( \frac{1}{n}=\frac{1}{n_{1}}+\frac{1}{n_{2}}+\frac{1}{n_{3}}+\dots \)
D. None of the above | 3 | Physics |
Are the following name correct according to IUPAC system of nomenclature? If not, give the correct
names.
Tert. butanol | 1 | Chemistry |
Which of the following combinations give finally an isotope of the parent element?
A. \( \alpha, \alpha, \beta \)
в. \( \alpha, \gamma, \alpha \)
c. \( \alpha, \beta, \beta \)
\( \mathbf{D} \cdot \beta, \gamma, \alpha \) | 1 | Chemistry |
What will be the effect of intermittent
light on photosynthesis?
A. It will increase
B. It will decrease
c. will not be effected
D. Process will stop | 0 | Biology |
In human zygote male sex is determined by
A. Strength of father
B. Nutrition of mother
c. composition of required chromosome pair
D. None of the above | 0 | Biology |
If two soap bubbles of different radii are
connected by a tube, then:
A. air flows from bigger bubble to the smaller bubble till sizes become equal
B. air flows from bigger bubble to the smaller bubble till sizes are interchanged
c. air flows from smaller bubble to bigger
D. there is no flow of air | 3 | Physics |
In context with the industrial
preparation of hydrogen from water gas
\( \left(C O+H_{2}\right), \) which of the following is the
correct statement?
\( \mathbf{A} \cdot \mathrm{CO} \) and \( \mathrm{H}_{2} \) are fractionally separated using differences in their densities
B. \( \mathrm{CO} \) is removed by absorption in aqueous \( \mathrm{Cu}_{2} \mathrm{Cl}_{2} \) solution
C \( . H_{2} \) is removed through occulsion with Pd
D. \( C O \) is oxidised to \( C O_{2} \) with steam in the presence of a
catalyst followed by absorption of \( C O_{2} \) in alkali | 1 | Chemistry |
A vertical line \( l \) passes through the point \( (2,3) . \) A horizontal line \( m \) passes
through the point \( (-1,6) . \) Where do lines \( l \) and \( m \) intersect?
\( \mathbf{A} \cdot(0,5) \)
в. (2,6)
c. (6,2)
D. (-1,3)
E \( .(3,-1) \) | 2 | Maths |
Termination of chain growth in protein synthesis is brought about by
A. UUG, UGC, UCA
B. UCG, GCG, ACC
c. UAA, UAG, UGA
D. UUG, UAG, UCG | 0 | Biology |
When \( M n O_{2} \) is fused with \( K O H, \) a
coloured compound is formed. The product and its colour is:
A \( \cdot K_{2} M n O_{4}, \) green
B. \( K M n O_{4} \), purple
c. \( M n_{2} O_{3} \), brown
D. \( M n_{3} O_{4} \), black | 1 | Chemistry |
Electronic configuration of element T is 2, 8, 7. Under which category this element belongs to?
A . Alkali metal
B. Alkaline metal
c. Noble gases
D. Non-metal | 1 | Chemistry |
The formula of students t-distribution
is
A \( \cdot t=\frac{s}{\sqrt{n}} \)
в. \( t=\frac{|\bar{X}-\mu|}{s} \)
c. \( \quad t=\frac{|\bar{X}-\mu|}{\frac{s}{\sqrt{n}}} \)
D. \( \quad t=\frac{\sqrt{n}}{s} \) | 2 | Maths |
Find the smallest number that must be
subtracted from 6868 to make it a
perfect cube. | 2 | Maths |
Why is the cooling unit of a refrigerator made at the top? | 3 | Physics |
A triangle \( A B C \) in which \( A B=A C, M \) is a point on \( A B \) and \( N \) is a point on \( A C \) such that if BM=CN then AM=AN
A. True
B. False | 2 | Maths |
The following reaction is known as:
\( \boldsymbol{C}_{6} \boldsymbol{H}_{6}+\boldsymbol{C} \boldsymbol{H}_{3} \boldsymbol{C l} \frac{A l C l_{3}}{(\boldsymbol{a n h y} .)} \boldsymbol{C}_{6} \boldsymbol{H}_{5} \boldsymbol{C H}_{3}+ \)
\( \boldsymbol{H} \boldsymbol{C l} \)
A. Wurtz-Fittig reaction
B. Friedel-Crafts reaction
c. Rosenmund reaction
D. Sandmeyer reaction | 1 | Chemistry |
Secondary growth generally occurs in
A. Monocots
B. Dicots
c. Gymnosperms
D. Both (b) and (c) | 0 | Biology |
Far point of a healthy eye is:
\( \mathbf{A} \cdot 50 \mathrm{cm} \)
B. \( 25 \mathrm{cm} \)
c. 1 metre
D. infinity | 3 | Physics |
Which among the following is not an electronic component used in constructing a toroid?
A. copper wires
B. laminated iron
c. ferrite core
D. aluminium powder | 3 | Physics |
True or False.
Cars are made from steel which is an
alloy of carbon and aluminium. | 1 | Chemistry |
Match the names with the tissues
shown. Choose the answer, which gives
the correct combination of the
alphabets.
\( \begin{array}{ll}\text { Cells } & \text { Tissues } \\ \text { A. Erythocytes } & \text { p. Bone } \\ \text { B. Chondrocytes } & \text { q. Neuron } \\ \text { c. osteocytes } & \text { r. Cartilage } \\ \text { D. Schwann cells } & \text { s. Blood } \\ & \text { t. Adipose tissue }\end{array} \)
A. \( A-s, B-r, C-t, D-p \)
B. A-s, B-r, C- p, D- q
\( c \cdot A-s, B-q, C-p, D-t \)
D. \( A-s, B-p, C-r, D-q \) | 0 | Biology |
Starch is composed of two polysaccharides namely:
A. amylopectin and glycogen
B. amylose and glycogen
c. amylose and amylopectin
D. amylose and amylopectin and glycogen | 1 | Chemistry |
Soap mixed with water below critical
micelle concentration behaves as:
A. associated colloid
B. macromolecular colloid
c. normal electrolytic solution
D. multimolecular colloid | 1 | Chemistry |
A block of mass 2 kg falls from the wall at height of \( 2.3 \mathrm{m} \). Calculate the velocity just before it hits the ground. \( (g= \)
\( -9.8 \frac{m}{s^{2}} \)
A \( \cdot-6.76 \frac{n}{s} \)
В. \( -26.86 \frac{m}{s^{2}} \)
\( \mathbf{c} \cdot 45.08 \frac{m}{s} \)
D. \( 13.43 \frac{m}{s} \)
E \( \cdot 3.36 \frac{m}{s} \) | 3 | Physics |
Which of the following gives purest form of nitrogen?
A. Thermal decomposition of ammonium nitrate
B. Treating aqueous solution of ammonium chloride with sodium nitrite
C. Thermal decomposition of sodium or barium azide
D. Liquefaction and fractional distillation of air | 1 | Chemistry |
An organic compound contains \( C, H \) and \( O . \) If \( C(\%): H(\%)=6: 1, \) what is the
simplest formula of the compound given that one mole of the compound contains half as much oxygen as would
be required to burn all the \( C \) and \( H \)
atoms in it to \( C O_{2} \) and \( H_{2} O ? \)
\( \mathbf{A} \cdot C H_{2} O \)
в. \( C_{2} H_{4} O_{3} \)
\( \mathbf{c} \cdot C_{3} H_{6} \)
D. \( C_{3} H_{6} O_{2} \) | 1 | Chemistry |
Complete the given reaction. \( 2 M n^{2+}+5_{--}(i)_{--}+8 H_{2} O \rightarrow 2_{--} \)
\( (i i)_{--}+16 H^{+} \)
\( (i i)_{--}+10_{--} \)
A \( \cdot(i)-S O_{4}^{2-},(i i)-M n O_{4}^{-},(i i i)-S_{2} O_{8}^{2-} \)
B . \( (i)-S_{2} O_{8}^{2-},(i i)-M n O_{4}^{-},(i i i)-S_{2} O_{4}^{2} \)
C \( \cdot(i)-M n O_{4}^{-},(i i)-S_{2} O_{8}^{2-},(i i)-S O_{4}^{2} \)
D \( \cdot(i)-S_{2} O_{8}^{2-},(i i)-S O_{4}^{2-},(i i i)-M n O_{4} \) | 1 | Chemistry |
Define matter. | 1 | Chemistry |
What provides surface for the vapors to cool and condense in a fractionating column?
A. Glass beads
B. water
c. sand
D. salt | 1 | Chemistry |
For the given experimental setup, the oscillation frequency of the mass is
\( \boldsymbol{f} \cdot \boldsymbol{S}_{1} \) and \( \boldsymbol{S}_{2} \) are identical springs. One
spring is now removed, then frequency
will become.
A . \( 2 f \)
B. \( \frac{f}{\sqrt{2}} \)
c. \( \frac{f}{\sqrt{3}} \)
D. \( \sqrt{2} f \) | 3 | Physics |
If \( A \) is a matrix of order \( 2 \times 3, B \) is a
matrix of order \( 3 \times 5 \), then what in the
order of matrix \( (A B) \) or \( (A B)^{t} \) | 2 | Maths |
Assertion
The \( V \rightarrow t \) graph perpendicular to time
axis is not possible in practice.
Reason
Infinite acceleration can not be realized
in practice.
A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
c. Assertion is correct but Reason is incorrect
D. Both Assertion and Reason are incorrect | 3 | Physics |
An electric kettle has two coils when
one of these is switched on the water in
the kettle boils in 6 min. When the
other coil is switched on, the water boils
in 3 min. If the two coils are connected
in series, the time taken to boil the
water in the kettle is
\( \mathbf{A} \cdot 3 \min \)
B. 6 min
c. 2 min
D. 9 min | 3 | Physics |
All halogens are:
A. s-block elements
B. d-block elements
C . representative elements
D. transition elements | 1 | Chemistry |
Amphoteric oxides of Mn and Cr are:
\( \mathbf{A} \cdot M n O \) and \( C r O \)
B. \( M n_{2} O_{3} \) and \( C r_{2} O_{3} \)
c. \( M n O_{2} \) and \( C r_{2} O_{3} \)
D. \( M n_{2} O_{7} \) and \( C r O_{3} \) | 1 | Chemistry |
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