text
stringlengths 1
4.32k
| label
int64 0
3
| label_text
stringclasses 4
values |
|---|---|---|
The equilibrium constant for the reaction:
\( \boldsymbol{H}_{2}(\boldsymbol{g})+\boldsymbol{B} \boldsymbol{r}_{2}(\boldsymbol{g}) \rightleftharpoons \boldsymbol{2} \boldsymbol{H} \boldsymbol{B} \boldsymbol{r}(\boldsymbol{g}) \)
is 67.8 at \( 300 K . \) The equilibrium
constant for the dissociation of \( \boldsymbol{H} \boldsymbol{B} \boldsymbol{r} \) is:
A . 0.0147
B. 67.8
c. 33.90
D. 8.349
| 1 |
Chemistry
|
The element eka-silicon in Mendeleev's
period table is known as in
the modern periodic table.
| 1 |
Chemistry
|
Increase in area per unit of the original
area, per degree celcius rise in
temperature is called
A. Coefficient of superficial expansion
B. Coefficient of volumetric expansion
c. coefficient of cubical expansion
D. All
| 3 |
Physics
|
A coil with 100 turns has an inductance
of \( 0.05 H \) and \( 0.02 A \) current is passed
through it. Flux linked with the coil is
A \( \cdot 10^{-2} W b \)
В \( \cdot 10^{-3} W b \)
\( \mathbf{c} \cdot 10^{-4} W b \)
D. \( 10^{-5} W b \)
| 3 |
Physics
|
f \( x+y=1, \) then \( \sum_{r=0}^{n} r^{n} C_{r} x^{r} . y^{n-r}= \)
\( \mathbf{A} \cdot \mathbf{1} \)
B.
c. \( n x \)
D. \( n y \)
| 2 |
Maths
|
A ball is dropped from the roof of a tower of height h. The total distance covered it in the last seconds of its motion is
equal to the distance covered by it in first three seconds. The value of h in
meters is \( \left(\boldsymbol{g}=\mathbf{1 0 m} / \boldsymbol{s}^{2}\right) \)
A . 125
B. 200
\( c \cdot 100 \)
\( D \cdot 80 \)
| 3 |
Physics
|
Most appropriate word for protozoans is
A . Cellular
B. Unicellular.
c. Acellular
D. Multicellular.
| 0 |
Biology
|
Q Type your question
substance is best represented by figure
\( A \)
B.
\( c \)
\( D \)
| 3 |
Physics
|
The H-zone in the skeletal muscle fibre
is due to
A. The absence of myofibrils in the central portion of \( A- \) band.
B. The central gap between myosin filaments in the \( A- \) band.
C. The central gap between actin filaments extending through myosin filament in the A-band.
D. Extension of mysoin filaments in the central portion of the A-band.
| 0 |
Biology
|
Butylated hydroxyanisole (BHA) is an example for:
A. antioxidant in food
B. antibiotic
c. antifertility drug
D. antiseptic
| 1 |
Chemistry
|
In the arrangement shown below, a
block of \( 2800 \mathrm{kg} \) is in equilibrium on
applying a force of 45 N. Find the density of the liquid?
| 3 |
Physics
|
Correct percentage of \( \mathrm{CO}_{2} \) present in the
atmosphere is
A . 0.03\%
B. 0.3\%.
c. \( 1 \% \)
D. 1.1\%
| 0 |
Biology
|
\( \frac{\sqrt{6}}{\frac{\sqrt{6}}{5}} \)
| 0 |
Biology
|
The distribution of genetic material occurs from generation to generation and permits great genetic diversity by frequent re-organisation of genetic complement. This occurs during
A. Mitosis
B. Meiosiss
c. organogenesis
D. Metamorphosis
| 0 |
Biology
|
Dipoles are found in:
A. Water
B. Hydrogen bromide
C. Iron
D. Argon
E. Sodium chloride
| 1 |
Chemistry
|
When the object is at distances \( u_{1} \) and
\( u_{2} \) the images formed by the same lens
are real and virtual respectively and of the same size. Then focal length of the
lens is:
A \( \cdot \frac{1}{2} \sqrt{\mu_{1} \mu_{2}} \)
в. \( \frac{\mu_{1}+\mu_{2}}{2} \)
c. \( \sqrt{\mu_{1} \mu_{2}} \)
D. \( \sqrt{\left(\mu_{1}+\mu_{2}\right)} \)
| 3 |
Physics
|
One of the most widely used drug in
medicine, iodex is?
A. Ethyl salicylate
B. Methyl salicylate
c. o-hydroxy benzoic acid
D. Acetyl salicylic acid
| 1 |
Chemistry
|
The mode of asexual reproduction in
bacteria is
This question has multiple correct options
A. Formation of gametes
B. Endospore formation
c. conjugation
D. Zoospores formation
| 0 |
Biology
|
Seven digits from the numbers 1,2,3,4 5,6,7,8,9 are written down nonrepeatedly in a random order to form a seven digit number. The probability that this seven digit number is divisible by 9
is
\( A \cdot \frac{2}{9} \)
B. \( \frac{7}{36} \)
\( c \cdot \frac{1}{9} \)
\( D \cdot \frac{7}{12} \)
| 2 |
Maths
|
Convert the given fractional numbers to
percentage. \( \frac{2}{7} \)
| 2 |
Maths
|
The marks in science of 80 students of
class \( X \) are given below. Find the mode of the marks obtained by the students in science
c... \( \begin{array}{llll}0- & 10- & 20- & 30- \\ 10 & 20 & 30 & 40\end{array} \)
Freq. 1 3
A. 17.36
B. 36.56
c. 53.17
D. 75.12
| 2 |
Maths
|
The standard electrode potential of Zinc
is \( 0.76, \) V. The potential of \( 0.1 \mathrm{M} \) zinc electrode is:
\( \mathbf{A} \cdot 0.8196 \mathbf{V} \)
B. 0.7895 V
c. \( 0.9484 \mathrm{V} \)
D. \( 0.7508 \mathrm{V} \)
| 1 |
Chemistry
|
Let \( A, B, C \) be the subsets of the
universal set \( X \) Let \( A^{\prime} B^{\prime} C^{\prime} \) denote their
complements in X Then which of below
corresponds to the shaded portion in
the given figure
\( \mathbf{A} \cdot A^{\prime} \cap B \cap C \)
B \( \cdot A \cap B^{\prime} \cap C \)
c. \( A \cap B \cap C^{\prime} \)
\( \mathbf{D} \cdot A^{\prime} \cap B^{\prime} \cap C \)
| 2 |
Maths
|
object and screen are fixed \( 90 \mathrm{cm} \) apart. The lens is displaced. two sharp images
are obtained when lens is at \( L_{1} \) and \( L_{2} \)
respectively such that \( I_{1}=4 I_{2} \). Find
the focal length of the lens?
\( \mathbf{A} \cdot 18 \mathrm{cm} \)
B. \( 15 \mathrm{cm} \)
c. \( 16 \mathrm{cm} \)
D. 20 cm
| 3 |
Physics
|
Prove that \( \sqrt{3}+\sqrt{5} \) is an irrational
number.
| 2 |
Maths
|
Find a unit vector perpendicular to the plane \( A B C, \) where the coordinates of
\( A, B \) and \( C \) is
\( \boldsymbol{A}(\mathbf{3},-\mathbf{1}, \mathbf{2}), \boldsymbol{B}(\mathbf{1},-\mathbf{1},-\mathbf{3}) \) and
\( \boldsymbol{C}(\mathbf{4},-\mathbf{3}, \mathbf{1}) \)
| 2 |
Maths
|
\( S O_{2} \) can act as both oxidant and
reductant.
A. True
B. False
| 1 |
Chemistry
|
Write any two differences between regular and irregular (diffused) reflection
| 3 |
Physics
|
Find the degree measure of the angle
subtended at the centre of a circle
of radius \( 100 \mathrm{cm} \) by an arc of length 22
\( \mathrm{cm} .\left(\boldsymbol{U s e} \boldsymbol{\pi}=\frac{\mathbf{2 2}}{\mathbf{7}}\right) \)
| 2 |
Maths
|
The average kinetic energy of hydrogen molecule at NTP will be
A. \( 0.4 \times 10^{-20} \) Joule /molecule
B . \( 1.56 \times 10^{-20} \) Joule / molecule
c. zero
D. \( 5.6 \times 10^{-20} \) Joule /molecule
| 3 |
Physics
|
Explain cardiac cycle with the help of diagrams.
| 0 |
Biology
|
The molar heat of vaporization of
toluene is \( \Delta H_{v} . \) If its vapour pressure at \( 315 \mathrm{K} \) is 60 torr \( \& \) that at \( 355 \mathrm{K} \) is 300
torr then \( \Delta H_{v}=?(\log 2=0.3) \)
A . 37.4 kJ/mole
B. 3.74 kJ/mole
c. 37.4 J/mol
D. 3.74 J/mole
| 1 |
Chemistry
|
Sprain is due to outstretching/pulling
of
A. Muscles
B. Tendons
c. Ligaments
D. Nerves
| 0 |
Biology
|
\( \begin{array}{ll}\text { List I } & \text { List II } \\ \text { 1) d.c's of } x-\text { axis } & \text { a) }(1,1,1) \\ \text { 2) d.c's of } y-\text { axis } & \text { b) } \\ \text { 3) d.c's of } z-\text { axis } & \left(\frac{1}{\sqrt{3}} \frac{1}{\sqrt{3}}, \frac{1}{\sqrt{3}}\right) \\ \begin{array}{l}\text { 4) d.c's of a line makes equal } \\ \text { angles with axes }\end{array} & \text { c) }(1,0,0) \\ \begin{array}{l}\text { d) }(0,1,0) \\ \text { e) }(0,0,1)\end{array}\end{array} \) The correct order for 1,2,3,4 is
\( \mathbf{A} \cdot c, d, e, b \)
B. \( a, b, c, e \)
\( \mathbf{C} \cdot c, d, a, b \)
D. \( b, c, a, e \)
| 2 |
Maths
|
How is ethanoic acid prepared from dry
ice?
| 1 |
Chemistry
|
Four particle each having a charge \( \boldsymbol{q} \)
are placed on the four vertices of a
regular pentagon. The distance of each
corner from the centre is \( a \). Find the
electric field at the centre of the
Pentagon.
A \( \cdot \frac{q}{4 \pi \epsilon_{0} a^{2}} \) Along OE
B. \( \frac{q}{3 \pi \epsilon_{0} a^{2}} \) Along OE
c. \( Z \) ero
D. \( \frac{q}{2} \) Along EO
| 3 |
Physics
|
Four one litre flasks are separately filled
with gases \( O_{2}, F_{2}, C H_{4} \) and \( C O_{2} \) under same conditions.
The ratio of the number of molecules in
these gases are:
\( \mathbf{A} \cdot 2: 2: 4: 3 \)
B. 1: 1: 1: 1
\( \mathbf{c} \cdot 1: 2: 3: 4 \)
D. 2: 2: 3: 4
| 1 |
Chemistry
|
A sum of Rs. 18750 is left by will by a father to be divided between two sons,
12 and 14 years of age, so that when they attain maturity at \( 18, \) the amount received by each of them at 5 per cent simple interest will be the
same. Find the sum allotted at present
to each son?
A. Rs. 9500 , Rs. 9250
B. Rs. 8000, Rs. 1750
c. Rs. \( 9000, \) Rs. 9750
D. Rs. 10000, Rs. 8750
| 2 |
Maths
|
\( \int \frac{\left(x^{2}+1\right)}{(x+1)^{2}} d x \)
| 2 |
Maths
|
Two wires made of same material have
Iengths in the ratio 1: 2 and their volumes in the same ratio. The ratio of
their resistances is:
A . 4: 1
B . 2: 1
c. 1: 2
D. 1: 4
| 3 |
Physics
|
A steady flow of water passes along a
horizontal tube from a wide section \( \boldsymbol{X} \)
to the narrower section \( Y \), see figure.
Manometers are placed at \( P \) and \( Q \) at
the sections. Which of the statements
\( A, B, C, D \) is most correct?
A. water velocity at \( X \) is greater than \( Y \)
B. the manometer at \( P \) shows lower pressure than at \( Q \)
C. kinetic energy per \( m^{3} \) of water at \( X= \) kinetic energy per \( m^{3} \) at \( Y \)
D. the manometer at \( P \) shows greater pressure than at \( Y \)
| 3 |
Physics
|
\( 2 C u I \rightarrow C u+C u I_{2}, \) the reaction is :
A. redox
B. neutralisation
c. displacement
D. none of the above
| 1 |
Chemistry
|
How would reversing the battery affect
the magnitude of current in R1 in the
circuit above?
A. It would increase but not double
B. It would double
c. It would decrease
D. It would not be affected
| 3 |
Physics
|
Decreasing order concentration of
minerals inside cell is
A \( \cdot \mathrm{ca}^{+2}-\mathrm{K}^{+}-\mathrm{Na}^{+} \)
B. \( k^{+}-C a^{+2}-N a^{+} \)
c. \( \kappa^{+}-N a^{+}-C a^{+} \)
D. \( \mathrm{Na}^{+}-\mathrm{K}^{+}-\mathrm{Ca}^{+2} \)
| 0 |
Biology
|
Which of the following reproduce by producing spores?
A. Jasmines
B. Roses
c. Ferns
D. Pomegranate
| 0 |
Biology
|
Rakesh went to a stationary shop to
purchase a total of 38 pens, erasers and sharpeners. He purchased at least 11
items of each. He purchased more
sharpeners than erasers and more
erasers than pens. If each pen cost Rs. 2
each eraser cost Rs. 3 and each
sharpener cost Rs. \( 4 . \) find the minimum
expenditure be could have incurred on the items (in Rs.)
A . 116
B . 118
c. 117
D. 119
| 2 |
Maths
|
sources of light of wavelength \( \lambda \) are placed on the dotted line in front of a large screen. The source emit waves in
phase with each other. The distance
between \( S_{1} \) and \( S_{2} \) is \( ^{\prime} d^{\prime} \) while their
distance from the screen is much
larger. Then,
(a) If \( d=7 \lambda / 2, O \) will be minima
(b) If \( d=4.3 \lambda \), there will be total of 8
minima on y-axis
(c) If \( d=7 \lambda, O \) will be maxima.
(d) If \( d=\lambda \), there will be only one
maxima on the screen.
Which is the set of correct statement:
A. \( a, b \) and \( c \)
B. \( b, c \) and \( d \)
c. \( a, b, c \) and \( d \)
D. \( a, c \) and \( d \)
| 3 |
Physics
|
\( \left[\begin{array}{cc}2 & 1 \\ 1 & 0 \\ -3 & 4\end{array}\right]+\left[\begin{array}{cc}-1 & -8 \\ 1 & -2 \\ 9 & 22\end{array}\right] \)
| 2 |
Maths
|
From the sum of -38 and \( 40 . \) subtract
\( \mathbf{1 2 0} \)
| 2 |
Maths
|
If \( f(a)=\log \left(\frac{2+a}{2-a}\right), 0<a<2 \) then
\( \frac{1}{2} f\left(\frac{8 a}{4+a^{2}}\right)= \)
A. \( f(a) \)
B. \( 2 f(a) \)
c. \( \frac{1}{2} f(a) \)
D. \( -f(a) \)
| 2 |
Maths
|
The product of two consecutive integers is \( 156 . \) Find the integers.
A. 10 and 13
B. 12 and 13
c. 12 and 11
D. 1 and 13
| 2 |
Maths
|
Which of the following statement(s) is incorrect ?
A . lonisation energy \( \propto \frac{1}{\text { Screening effect }} \)
B. The first ionisation energies of Be and Mg are more than ionisation energies of B and Al respectively
c. Atomic and ionic radii of Niobium and Tantalum are almost same
D. Metallic and covalent radii of potassium are 2.03 , and 2.3 \( \dot{A} \) respectively
| 1 |
Chemistry
|
The molecule/ion in which bond angle is
les than \( 109^{\circ} ? \)
\( \mathbf{A} \cdot N F_{4}^{+} \)
B. \( C C l_{4} \)
c. \( C L O_{4} \)
D. None of these
| 1 |
Chemistry
|
The value of mutual inductance can be
increased by
A. decreasing N
B. increasing
c. winding the coil on wooden frame
D. winding the coil on china clay
| 3 |
Physics
|
An electron and a photon each have a
wave length 1 nm. Find the energy pf the photon.
| 3 |
Physics
|
00
0
00
0
| 2 |
Maths
|
Write the measure of supplementary angle of the given angles:
\( \mathbf{6 0}^{\circ} \)
| 2 |
Maths
|
State one point of similarity and one point of difference between an A.C. generator ans a D.C. motor.
| 3 |
Physics
|
Porous wood contains
A. Fibres
B. Sieve tubes
c. Tracheids
D. vesselss
| 0 |
Biology
|
The maximum work that can be
obtained from the cell
\( \boldsymbol{A l}\left|\boldsymbol{A l}^{3+}(\mathbf{0 . 1} \boldsymbol{M}) \| \boldsymbol{F} \boldsymbol{e}^{\boldsymbol{2}+}(\boldsymbol{0 . 2} \boldsymbol{M})\right| \boldsymbol{F e} \) is:
\( \left[\text { Given }: \boldsymbol{E}_{A l^{3+} / A l}^{o}=-\mathbf{1 . 6 6} \mathbf{V} \) and \right.
\( \left.\boldsymbol{E}_{\boldsymbol{F} e^{2+} / \boldsymbol{F} e}^{\boldsymbol{o}}=-\mathbf{0 . 4 4} \boldsymbol{V}\right] \)
A. \( 605.8 \mathrm{kJ} \)
B. 505.8 kJ
c. 705.8 kJ
D. 905.8 kJ
| 1 |
Chemistry
|
The solution of the equation \( 1.5 y- \) \( \mathbf{7}=\mathbf{0 . 5 y} \) is
\( A \cdot 7 \)
в. -7
\( c .3 .5 \)
D. - 3.5
| 2 |
Maths
|
Cross-like configurations when non-
sister chromatids of a bivalent come in
contact during first meiotic division are
A. Chiasmata
B. Chromomeres
c. Centromere
D. Bivalents
| 0 |
Biology
|
The \( n \) th term of an A.P is \( 6 n+2 \). Find
the common difference.
| 2 |
Maths
|
\( f\left|\begin{array}{ccc}\mathbf{6} i & -\mathbf{3} i & \mathbf{1} \\ \mathbf{4} & \mathbf{3} i & -\mathbf{1} \\ \mathbf{2 0} & \mathbf{3} & \boldsymbol{i}\end{array}\right|=\boldsymbol{x}+\boldsymbol{i} \boldsymbol{y}, \) then
A \( . x=3, y=1 \)
B. \( x=1, y=3 \)
c. \( x=0, y=3 \)
D. \( x=0, y=0 \)
| 2 |
Maths
|
In the reaction
\( \boldsymbol{R O H}+\boldsymbol{P B r}_{3} \rightarrow \boldsymbol{R B r} \)
The number of moles of alcohol that
may be converted into alkyl bromide by
one mole of \( \boldsymbol{P} \boldsymbol{B r}_{3} \) is:
A . 1 mole
B. 2 mole
c. 3 mole
D. none of the above
| 1 |
Chemistry
|
Mineral activator of enzyme aconitase
is
A. Mn
в. Мв
c. \( \mathrm{Fe} \)
D. cu
| 0 |
Biology
|
Similarity between \( N b \) and \( T a \) is
because they:
A. are transition metals
B. belong to same group of periodic table
c. have the same mineral source
D. have almost same ionic and covalent radii
| 1 |
Chemistry
|
As the temperature increases, rate of
reaction increases because:
A. number of collisions between the molecules of
reactants increases
B. concentration of the reactants increases
C . activation energy is decreased
D. none of the above
| 1 |
Chemistry
|
During discharging of a charged glass rod via earthing, the connecting material can be
A. another glass rod
B. a conducting wire
\( c . \) fur
D. an ebonite rod
| 3 |
Physics
|
Let \( O B=\hat{i}+2 \hat{j}+2 \hat{k} \) and \( O A=4 \hat{i}+ \)
\( 2 \hat{j}+2 \hat{k} . \) The distance of the point \( B \) from the straight line passing through \( A \) and parallel to the vector \( 2 \hat{i}+3 \hat{j}+ \) \( 6 \hat{k} \) is
A \( \cdot \frac{7 \sqrt{5}}{9} \)
в. \( \frac{5 \sqrt{7}}{9} \)
c. \( \frac{3 \sqrt{5}}{7} \)
D. \( \frac{9 \sqrt{5}}{7} \)
E \( \cdot \frac{9 \sqrt{7}}{5} \)
| 2 |
Maths
|
Arrange the elements
\( F, N a, F e, C l, N e \) in increasing order
of ionization energy.
A. \( N a<F e<C l<F<N e \)
в. \( N e>F>C l>F e>N a \)
c. \( F e>C l>F>N e>N a \)
| 1 |
Chemistry
|
The U-tube of a manometer has:
A. one side open
B. both sides open
c. both sides closed
D. none of these
| 3 |
Physics
|
Sometimes blurred and less sharply
defined images are formed. This defect
is called
A. Chromatic aberration
B. Spherical aberration
c. Blurred lens
D. None of the above
| 3 |
Physics
|
The wavelength of visible light is :
A. 200nm- 370 nm
B. 780nm - 890nm
c. \( 380 \mathrm{nm}-760 \mathrm{nm} \)
D. 900nm - 2000nm
| 1 |
Chemistry
|
Identify the mirror
A. convex
B. Concave
c. Biconcave
D. Biconvex
| 3 |
Physics
|
The time period of an earth satellite in
circular orbits is independent of
A. both the mass and radius of the orbit
B. radius of its orbit
c. the mass of the satellite
D. neither the mass of the satellite nor the radius of its orbit
| 3 |
Physics
|
If \( n=\frac{\pi}{4 \alpha}, \) then
\( \tan \alpha \cdot \tan 2 \alpha \cdot \tan 3 \alpha \dots \tan (2 n-1) \alpha \) is
equal to
A . 1
B. - 1
\( c \cdot \infty \)
D. None of these
| 2 |
Maths
|
Speeds of two identical cars are u and
4u at a sufficient instant. What is the
ratio of the respective distance at which
the two cars are stopped from that instant?
| 3 |
Physics
|
Figure shows a bar magnet and a long
straight wire \( \mathrm{W} \), carrying current into
the
plane of paper.Point \( P \) is the point of intersection of axis of magnet and the
line
of shortest distance between magnet
and the wire. If \( P \) is the midpoint of the
magnet, then which of the following
statements is correct?
A. magnet experiences a torque in clockwise direction
B. magnet experiences a torque in anticlockwise direction
C. magnet experiences a force, normal to the line of shortest distance
D. magnet experiences a force along the line of shortest distance
| 3 |
Physics
|
Aliphatic ethers are purified by shaking with a solution of ferrous salt to remove
which are formed on
prolonged standing in contact with
water
A. aromatic ethers
B. aliphatic alcohols
c. peroxides
D. aldehydes
| 1 |
Chemistry
|
During a thunderstorm, rainwater contains nitric acid. Explain with
reaction.
| 1 |
Chemistry
|
An ideal cell having a steady emf of
2 volts is connected across the
potentiometer wire of length \( 10 m \). The
potentiometer wire is of magnesium and having resistance of \( 11.5 \Omega / m . \) An another cell gives a null point at \( 6.9 m \). If
a resistance of \( 5 \Omega \) is put in series with potentiometer wire, the new position of the null point is given as \( \frac{x}{10} m . \) Find \( x \)
| 3 |
Physics
|
toppr
Q Type your question
\( N O, N_{2} O_{3}, N_{2} O_{4} \) to \( N_{2} O_{5} \) (O.S of
nitrogen +5 ).
The following points are important regarding the oxides of nitrogen.
(a) All oxides of nitrogen except \( N_{2} O_{5} \) are endothermic because large amount of energy is required to dissociate the stable molecule of oxygen and nitrogen.
(b) The small electronegativity difference between oxygen and nitrogen makes N-O bond easily breakable to give oxygen and hence oxides of nitrogen are said to be better oxidizing
agents
(c) Except \( N_{2} O_{5}, \) all are gases at
ordinary temperature. \( N_{2} O_{3} \) is stable only at a lower temperature \( (253 \mathrm{K}) \)
(d) Except \( N_{2} O \) and \( N O \) which are
neutral oxides, all are acidic oxides that
dissolve in water forming
corresponding oxyacids.
(e) They are also a good example of illustrating the concept of resonance.
The gas which is acidic in nature is
A. \( N O \)
B. \( N_{2} O \)
\( \mathbf{c} \cdot N O_{2} \)
D. Both (A) and (C)
| 1 |
Chemistry
|
Find the speed of the connector as a
function of time if the force \( \boldsymbol{F} \) is applied
\( \operatorname{at} t=0 \)
| 3 |
Physics
|
Pressure applied on a rubber ball reduces the ball's radius by \( 1 \% \), what is the percentage volume strain of the ball
A . 1\%
B. 3\%
c. \( 5 \% \)
D. 0.5\%
| 3 |
Physics
|
Assertion
\( N O_{2} \) is reddish brown and its dimer
\( N_{2} O_{4} \) is colourless
Reason
There is a dative bond formation
between two \( N O_{2} \) molecules
A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
c. Assertion is correct but Reason is incorrect
D. Both Assertion and Reason are incorrect
| 1 |
Chemistry
|
The refractive index \( (\mu) \) of glass is found to have the values
1.49,1.50,1.52,1.54 and 1.48
Calculate percentage error.
A. \( 0.61 \% \)
B. \( 1.32 \% \)
c. \( 2.64 \% \)
D. \( 5.28 \% \)
| 3 |
Physics
|
The coagulating power of electrolytes
having ions \( N a^{+}, A l^{3+} \) and \( B a^{2+} \) for
arsenic sulphide sol increases in the order:
A \( \cdot N a^{+}<B a^{2+}<A l^{3+} \)
B. \( B a^{2+}<N a^{+}<A l^{3+} \)
c. \( A l^{3+}<N a^{+}<B a^{2+} \)
D. \( A l^{3+}<B a^{2+}<N a^{+} \)
| 1 |
Chemistry
|
If a variate takes values
\( a, a r, a r^{2}, \ldots \ldots a r^{n-1} \) which of the
relation between means hold?
A \( . A H=G^{2} \)
в. \( \frac{A+H}{2}=G \)
c. \( A>G>H \)
D. \( A=G=H \)
| 2 |
Maths
|
Lactose is a disaccharide of :
A. \( \alpha-D \) -Glucose and \( \alpha-D \) -Fructose
B . \( \beta-D \) -Glucose and \( \beta-D \) -Galactose
C \( . \alpha-D \) -Glucose and \( \beta-D \) -Ribose
D. \( \alpha-D \) -Glucose and \( \alpha-D \) -Galactose
| 1 |
Chemistry
|
A solid sphere of radius \( 20 \mathrm{cm} \) is
subjected to a uniform pressure of \( 10^{6} \)
\( N m^{-2} . \) If the bulk modulus is \( 1.7 \times \)
\( 10^{11} N m^{-2}, \) the decrease in the volume
of the solid is approximately equal to:
A \( \cdot 0.2 \mathrm{cm}^{3} \)
В. \( 0.3 \mathrm{cm}^{3} \)
\( \mathrm{c} \cdot 0.4 \mathrm{cm}^{3} \)
D. \( 0.5 \mathrm{cm}^{3} \)
| 3 |
Physics
|
Mr. Dixit resigned from the company after 4 years of service.
A. If only G can be given
B. If only PF can be given
c. If both G and Pf can be given
D. If neither G nor PF can be given
| 2 |
Maths
|
Construct a quadrilateral \( A B C D, \) when
\( A B=3.2 \mathrm{cm}, B C=5.2 \mathrm{cm}, C D=6.2 \)
\( \mathbf{c m}, \boldsymbol{D} \boldsymbol{A}=\mathbf{4 . 2} \mathbf{c m} \) and \( \boldsymbol{B} \boldsymbol{D}=\mathbf{5} . \boldsymbol{2} \mathrm{cm} \)
| 2 |
Maths
|
In given figure, \( D E \| A C \) and \( D C \| A P \) Prove that \( \frac{\boldsymbol{B} \boldsymbol{E}}{\boldsymbol{E C}}=\frac{\boldsymbol{B C}}{\boldsymbol{C P}} \)
| 2 |
Maths
|
Which one is a metal?
\( A \cdot B \)
B.
\( c \cdot D \)
D. All of the above
| 1 |
Chemistry
|
The strongest acid among the following is -
\( \mathbf{A} \cdot \mathrm{ClO}_{3}(\mathrm{OH}) \)
B. \( \mathrm{ClO}_{2}(\mathrm{OH}) \)
\( \mathbf{c} \cdot \operatorname{SO}(\mathrm{OH})_{2} \)
\( \mathrm{D} \cdot \mathrm{SO}_{2}(\mathrm{OH})_{2} \)
| 1 |
Chemistry
|
Term Species, Division and Phylum were
coined by
A. Species by John Ray, Division by Eichler and Phylum by Cuvier
B. Species by Cuvier, Division by Eichler and Phylum by Ray
C. Species by Ray and Phylum and Division by Haeckel
D. Species and Division by Ray and Phylum by Linnaeus
| 0 |
Biology
|
In a moving coil galvanometer, the
deflection \( (\Phi) \) on the scale by a pointer attached to the spring is
\( ^{\mathrm{A}} \cdot\left(\frac{N A}{k B}\right) I \)
в. \( \left(\frac{N}{k A B}\right) I \)
\( ^{\mathbf{c}} \cdot\left(\frac{N A B}{k}\right) I \)
D. \( \left(\frac{N A B}{k I}\right) \)
| 3 |
Physics
|
A question paper has 5 questions. Each question has an alternative. The number of ways in which a student can attempt at least one question is?
\( \mathbf{A} \cdot 2^{5}-1 \)
B. \( 3^{5}-1 \)
\( c \cdot 3^{4}-1 \)
D. None of these
| 2 |
Maths
|
A taxon is observed. Himgiri variety which is resistant to hill bunt disease
belongs to this taxon. In this taxon, pollen grains lose viability within 30 minutes of their release from anthers.
The taxon belongs to the order
A. Sapindales.
B. Polemoniales.
c. Rosales.
D. Poales
| 0 |
Biology
|
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.