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Four forces act on a point object. The
object will be in equilibrium, if:
A. all of them are in the same plane
B. they are opposite to each other in pairs
C. the sum of \( x, y \) and \( z \) - components of forces zero separately
D. they form a closed figure of 4 sides when added as Polygon law | 2 | Maths |
Dinoflagellates are called as fire algae due to which character?
A. They appear like fire due to pigments
B. They produce fire due to friction
c. They occur on burnt places
D. They show bioluminiscence | 0 | Biology |
Which of the following \( x \& y \) are in
inverse proportion?
A \( \cdot \frac{x}{y}=K \)
в. \( x+y=K \)
c. \( x-y=K \)
D. \( x y=K \) | 2 | Maths |
Equal masses of hydrogen gas and oxygen gas are placed in a closed
container at a pressure of \( 3.4 a t m . \) The
contribution of hydrogen gas to the total
pressure is:
A . \( 1.7 a t m \)
B. \( 0.2 a t m \)
c. \( 3.2 a t m \)
D. 3.02atm | 1 | Chemistry |
The arrow with a pointed tip can move faster in air than that of with a blunt tip.
A. True
B. False
c. Ambiguous
D. Data insufficient | 3 | Physics |
What is the boiling point of \( \boldsymbol{P C l}_{3} \) ?
\( \mathbf{A} \cdot-93.6^{\circ} \mathrm{C} \)
B . \( 169^{\circ} \mathrm{C} \)
c. \( 100^{\circ} \mathrm{C} \)
D. \( 76.1^{\circ} \mathrm{C} \) | 1 | Chemistry |
The tension in the upper portion of the
chain is equal to:
\( \mathbf{A} \cdot 100 N \)
B. 120
c. 160
D. 240 | 3 | Physics |
Find the time dependence of the velocity
\( \overrightarrow{\boldsymbol{v}} \) vector.
A \( . \vec{v}=2 a \vec{i}-b t \vec{j} \)
B . \( \vec{v}=-2 a \vec{i}-2 b t \vec{j} \)
C \( . \vec{v}=-2 a \vec{i}-b t \vec{j} \)
D. \( \vec{v}=a \vec{i}-2 b t \vec{j} \) | 3 | Physics |
Which of the following is not a category?
A. species
B. Class
c. Phylum
D. Glumaceae | 0 | Biology |
The principle of conservation of linear momentum can be strictly applied during a collision between two particles provided the time of impact is
A. Extremely small
B. Moderately small
C. Extremely large
D. Depends on a particular case | 3 | Physics |
Isotopes of cobalt \( \ldots \) used in the
treatment of cancer
A. \( C o-59 \)
в. \( C o-60 \)
c. \( C o-61 \)
D. \( C o-62 \) | 1 | Chemistry |
Boron can not form more than 4 bonds
because:
This question has multiple correct options
A. of unavailability of d-orbitals
B. of unavailabilty of empty p-orbitals
C. Boron is so smaller
D. it does not have more valence electrons | 1 | Chemistry |
Two metallic spheres of radii \( 1 \mathrm{cm} \) and
\( 3 c m \) are given charges of \( -1 \times 10^{-2} C \)
and \( 5 \times 10^{-2} C, \) respectively. If these are
connected by a conducting wire, the final charge on the bigger sphere is-
A \( \cdot 3 \times 10^{-2} \mathrm{C} \)
B. \( 4 \times 10^{-2} \mathrm{C} \)
c. \( 1 \times 10^{-2} C \)
D. \( 2 \times 10^{-2} C \) | 3 | Physics |
Which of the following is not formed during anaerobic respiration?
A. Pyruvate
B. Ethyl alcohol
\( c \cdot c O_{2} \)
D. Acetyl CoA | 0 | Biology |
Short / Long answer type questions. Why is osmotic potential given a negative sign? | 0 | Biology |
Write balanced net ionic equation for the following reactions in acidic solution:
\( \boldsymbol{H} \boldsymbol{N} \boldsymbol{O}_{2}(\boldsymbol{a} \boldsymbol{q}) \rightarrow \boldsymbol{N} \boldsymbol{O}_{3}^{-}+\boldsymbol{N} \boldsymbol{O}(\boldsymbol{g}) \)
A \( \cdot H N O_{2}(a q) \rightarrow H N O_{3}^{-}+2 N O(g)+H_{2} O \)
B \( \cdot 2 H N O_{2}(a q) \rightarrow 2 H N O_{3}^{-}+2 N O(g)+2 H_{2} O \)
\( \mathrm{c} \cdot 3 \mathrm{HNO}_{2}(a q) \rightarrow \mathrm{NO}_{3}^{-}+2 \mathrm{NO}(g)+\mathrm{H}_{2} \mathrm{O}+\mathrm{H}^{+} \)
D. None of the above | 1 | Chemistry |
Evaluate the integral \( \int_{0}^{1} x^{2} e^{x} d x \)
\( \mathbf{A} \cdot e-2 \)
B. \( e+2 \)
\( c \)
D. \( e+3 \) | 2 | Maths |
The effective atomic number of Mn,in
\( M n_{2}(C O)_{10} \) is
A . 36
B. 38
\( c \cdot 32 \)
D. 34 | 1 | Chemistry |
Which of the following statements are
incorrect about receptor proteins?
This question has multiple correct options
A. Majority of receptor proteins are embedded in the cell membranes
B. The active site of receptor proteins opens on the inside region of the cell
C. Chemical messengers are received at the binding sites of receptor proteins
D. Shape of receptor doesn't change during attachment of massenger | 1 | Chemistry |
An alkali is titrated against an acid
with methyl orange as indicator, which of the following is a correct combination
\( ? \)
A. Base - Weak, Acid - Strong, End point- Yellow to pinkish red
B. Base - Strong, Acid - Strong, End point - Pink to colourless
c. Base - weak, Acid - Strong, End point- - Colourless to pink
D. Base - strong, Acid- Strong, End point - Pinkish red to yellow | 1 | Chemistry |
Which of the following is a correct statement about probability?
A. It must have a value between -1 and 1
B. It is the collection of multiple experiments
c. Result can be in the form of decimal or negative
D. The probability of an event will not be less than 0 | 2 | Maths |
Copper has one conduction electron per atom. Its density is \( 8.89 g / m^{3} \) and its
atomic mass is \( 63.54 \mathrm{g} / \mathrm{mol} \). If a copper wire of diameter \( 1.0 \mathrm{mm} \) carries a current
of 2.0 A. What is the drift speed of the electrons in the wire?
A \( \cdot 1.9 \times 10^{-4} \)
В. \( 2.9 \times 10^{-4} \)
\( \mathbf{c} \cdot 1.9 \times 10^{4} \)
D. \( 2.9 \times 10^{4} \) | 3 | Physics |
The alkali metals dissolve in liquid
\( N H_{3}, \) it is found that:
A. the dilute solution is blue but the color changes to bronze with increasing concentration
B. the blue color is due to presence of solvated electrons
c. the blue solutions are paramagnetic but the bronze colored solutions are diamagnetic
D. all the facts given above are found | 1 | Chemistry |
In the Newton's rings set up, when a drop of water is introduced between the
glass plate and planoconvex lens the observed ring system
A. Contracts
B. Expands
c. Remains the same
D. Expands and then contracts | 3 | Physics |
How do you account for the reducing
behaviour of \( H_{3} P O_{2} \) on the basis of its
structure ? | 1 | Chemistry |
Atomic masses of isotopes of carbon
\( 6 C^{12} \) ) having neutrons 7 and 8 respectively are :
A. 14,15
B. 15,16
c. 16,17
D. 13,14 | 3 | Physics |
Which of the following belongs to the class of inferior planets?
A. Mercury
B. Venus
c. Pluto
D. Saturn | 3 | Physics |
\( \boldsymbol{x}=\mathbf{0 . 5 0 0 m}, \boldsymbol{y}=\mathbf{0}, \boldsymbol{z}=\mathbf{0} \) | 3 | Physics |
Choline is present in | 1 | Chemistry |
ff \( f(x)=x^{2}+2 x-1, \) find \( f(2) \)
\( A \cdot 3 \)
B. 5
\( c \cdot 7 \)
D. | 2 | Maths |
The order of Gymnosperm represented by a single living genera is
A. Gnetales
B. Coniferales
c. cycadales
D. Ginkgoales | 0 | Biology |
\( N-O \) bond length in \( N_{2} O_{4} \) is greater
than expected due to charge repulsion.
A. True
B. False | 1 | Chemistry |
Assertion
\( \left[\boldsymbol{F e}\left(\boldsymbol{H}_{2} \boldsymbol{O}\right)_{6}\right]^{3+} \) is strongly paramagnetic
whereas \( \left[\boldsymbol{F e}(\boldsymbol{C N})_{\boldsymbol{6}}\right]^{3-} \) is weakly
paramagnetic.
Reason
\( \boldsymbol{H}_{2} \boldsymbol{O} \) is a week field ligand and \( \boldsymbol{C} \boldsymbol{N}^{-} \) is
a strong field ligand.
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 |
Find \( S_{n}, \) the sum of the first \( n \) terms, for
the following geometric series. \( a_{1}= \)
\( \mathbf{1 2 0}, \boldsymbol{a}_{5}=\mathbf{1}, \boldsymbol{r}=-\mathbf{2} \)
A .20 .66
B. 40.66
c. 80.66
D. 100.66 | 2 | Maths |
Solve \( 4 x+\frac{6}{y}=15 \) and \( 6 x-\frac{8}{y}=14 \)
and hence find 'p', if \( \boldsymbol{y}=\boldsymbol{p} \boldsymbol{x}-\boldsymbol{2} \) | 2 | Maths |
Which of the following is employed in
flash tubes in photography? This question has multiple correct options
A . \( A r \)
в. \( N e \)
\( c . K r \)
D. \( x e \) | 1 | Chemistry |
What is the ratio of the areas of two
similar triangles whose corresponding sides are in the ratio \( 15: 19 ? \)
A. \( \sqrt{15}: \sqrt{19} \)
B. 15: 19
c. 225: 361
D. 125: 144 | 2 | Maths |
Match column I with column II. | 1 | Chemistry |
Which of the following is the path difference for destructive interference?
A. \( n(\lambda+1) \)
B. \( (2 n+1) \frac{\lambda}{2} \)
c. \( n \lambda \)
D. \( (n+1) \frac{\lambda}{2} \) | 3 | Physics |
Atomic weight of which set of elements were corrected by Mendeleev?
A. \( L i, N a, K \)
в. \( U, \)Ве \( , \) In
c. \( T c, S c, A l \)
D. None of the these | 1 | Chemistry |
\( \operatorname{Gas}(\boldsymbol{A})+\boldsymbol{N a O H} \rightarrow \boldsymbol{B} \stackrel{\boldsymbol{A}^{+}}{\rightarrow} \boldsymbol{C} \stackrel{\boldsymbol{H}^{+}}{\rightarrow} \boldsymbol{D} \)
\( C \) and \( D \) decolorises acidified \( K M n O_{4} \) Identify \( C \) and \( D \)
A \( \cdot N a_{2} C O_{3}, N a O H \)
в. \( (C O O H)_{2},(C O O N a)_{2} \)
c. \( (C O O N a)_{2},(C O O H)_{2} \)
D. None of the above | 1 | Chemistry |
A ball of mass \( 1 \mathrm{kg} \) is dropped from a height of \( 5 \mathrm{m} \) find
(i) K.E. of the ball as it is \( \frac{1}{2} \) way to the
ground.
(ii) Find P.E. at this instant. | 3 | Physics |
Water is being pumped out through a circular pipe whose internal diameter \( 7 \mathrm{cm} . \) If the flow of water is \( 72 \mathrm{cm} \) per
second, how many liters of water are being pumped out in one hour? | 2 | Maths |
The following configuration of gates is equivalent to
A. xon
B. NAND
\( c . \) ок
D. None of these | 3 | Physics |
The force between two parallel
conductors, each of length \( 50 m \) and
distant \( 20 \mathrm{cm} \) apart, is \( 1 \mathrm{N} \). If the
current in one conductor is double than
that in another one, then their values
will respectively be:
\( \mathbf{A} \cdot 100 A \) and \( 200 A \)
B. \( 50 A \) and \( 400 A \)
c. \( 10 A \) and \( 30 A \)
D. \( 5 A \) and \( 25 A \) | 3 | Physics |
We cannot see the oxygen that we breathe. It is freely available in the air, from which it is obtained for industrial
purposes by liquifying it. Liquid oxygen:
A. is blue in colour
B. looks like water
c. is invisible, like oxygen in the air
D. is opaque | 1 | Chemistry |
Assertion
\( P b C l_{2} \) is more stable than \( P b C l_{4} \)
Reason
Pb \( C l_{4} \) is a powerful oxidising agent
A. Both Assertion and Reason are correct and Reason is
the correct explanation for Assertion
B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
C. Assertion is correct but Reason is incorrect
D. Assertion is incorrect but Reason is correct | 1 | Chemistry |
The reactions \( \boldsymbol{P C l}_{5}(\boldsymbol{g}) \rightleftharpoons \boldsymbol{P C l}_{3}(\boldsymbol{g})+ \)
\( C l_{2}(g) \) and \( C O C l_{2}(g) \rightleftharpoons C O(g)+ \)
\( C l_{2}(g) \) are simultaneously in
equilibrium in an equilibrium box at constant volume. A few moles of \( C O(g) \) are later introduced into the vessel.
After some time, the new equilibrium concentration of
A. \( P C l_{5} \) will remain unchanged
B. \( C l_{2} \) will be greater
c. \( P C l_{5} \) will become less
D. \( P C l_{5} \) will become greater | 1 | Chemistry |
Write the chemical reactions of
\( C_{2} H_{5} O H \) with \( P C l_{3} \) and \( P C l_{5} \)
separately | 1 | Chemistry |
If the extremities of the base of an
isosceles triangle are the points \( (2 a, 0) \) and \( (0, a), \) and the equation of one of the sides is \( x=2 a \), then the area of the
triangle is
A. \( 5 a^{2} \) squnits
в. \( \frac{5 a^{2}}{2} \) sq.units
c. \( \frac{25 a^{2}}{2} \) sq.units
D. None of these | 2 | Maths |
\( \left|\begin{array}{ccc}1+\sin ^{2} \theta & \sin ^{2} \theta & \sin ^{2} \theta \\ \cos ^{2} \theta & 1+\cos ^{2} \theta & \cos ^{2} \theta \\ 4 \sin 4 \theta & 4 \sin 4 \theta & 1+4 \sin 4 \theta\end{array}\right|= \)
\( 0, \) then \( \sin 4 \theta \) equals to
A. \( 1 / 2 \)
B.
\( c \cdot-1 / 2 \)
D. -1 | 2 | Maths |
n a coil of resistance \( 100 \Omega \), a current
is induced by changing the magnetic flux through it as shown in the figure.
The magnitude of change in flux through the coil is:
A \( .275 \mathrm{Wb} \)
В. \( 200 \mathrm{Wb} \)
\( c .225 W b \)
D. \( 250 \mathrm{Wb} \) | 3 | Physics |
Generally pi bond is formed from the lateral overlap of:
A. \( s-s \) orbitals
B. \( p-p \) orbital
c. \( d-d \) orbitals
D. both \( B \) and \( C \) | 1 | Chemistry |
Sitting in her parlour one night, Chitra sees the reflection of her cat in the
living room window. If the image of her
cat makes an angle of \( 40^{\circ} \) with the
normal, at what angle does Chitra see the reflected image of the cat? | 3 | Physics |
A body of mass \( 2 k g \) is sliding with a
constant velocity of \( 4 m / s \) on a
frictionless horizontal table. The net
force required to keep the body moving with the same velocity is
A. \( 8 N \)
в. \( 0 N \)
c. \( 4 N \)
D. \( \frac{1}{2} N \) | 3 | Physics |
Prove that \( \frac{1}{\sin 10^{\circ}}-\frac{\sqrt{3}}{\cos 10^{\circ}}=4 \) | 2 | Maths |
A light ray Incidents normally on the
face of \( A B \) of a right angled prism \( A B C \). Prism is made of a material having
refractive index of \( \mu=1.5 \) as shown in
the figure. What is the largest angle \( \theta \)
for which light is totally reflected at the
surface AC?
A \( \cdot \sin ^{-1}\left(\frac{2}{3}\right) \)
B. \( \cos ^{-1}\left(\frac{2}{3}\right) \)
c. \( \sin ^{-1}\left(\frac{3}{4}\right) \)
D \( \cos ^{-1}\left(\frac{3}{4}\right) \) | 3 | Physics |
Why does the school bags have broad shoulder straps?
A. To increase pressure
B. To decrease pressure
c. As a fashion trend
D. None of the above | 3 | Physics |
\[
f(x)=\left\{\begin{array}{ll}
\frac{1-\sin ^{2} x}{3 \cos ^{2} x}, & x<\frac{\pi}{2} \\
a, & x=\frac{\pi}{2} \\
\frac{b(1-\sin x)}{(\pi-2 x)^{2}} & x>\frac{\pi}{2}
\end{array}\right.
\]
then \( f(x) \) is continuous at \( x=\frac{\pi}{2} \) | 2 | Maths |
An isotone of \( _{32}^{76} \) Ge is:
A \( \cdot \frac{77}{32} \mathrm{Ge} \)
B. 家
\( A s \)
\( \mathrm{c} \cdot \frac{77}{34} \mathrm{Se} \) | 1 | Chemistry |
Three copper wires of lengths and cross sectional areas are \( (l, A)\left(2 l, \frac{A}{2}\right) \) and \( \left(\frac{l}{2}, 2 A\right) . \) Resistance is minimum in
A \( \cdot \) wire of cross-sectional area \( \frac{A}{2} \)
B. wire of cross-sectional area \( A \)
c. wire of cross-sectional area \( 2 A \)
D. same in all the three cases | 3 | Physics |
The image of the point \( \boldsymbol{P}(\boldsymbol{\alpha}, \boldsymbol{\beta}, \gamma) \) by
the plane \( l x+m y+n z=0 \) is the point \( \boldsymbol{Q}\left(\boldsymbol{\alpha}^{\prime}, \boldsymbol{\beta}^{\prime}, \boldsymbol{\gamma}^{\prime}\right) . \) Then
A \( \cdot \alpha^{2}+\beta^{2}+\gamma^{2}=l^{2}+m^{2}+n^{2} \)
B . \( \alpha^{2}+\beta^{2}+\gamma^{2}=\alpha^{2}+\beta^{2}+\gamma^{2} \)
\( \mathbf{c} \cdot \alpha \alpha^{\prime}+\beta \beta^{\prime}+\gamma \gamma^{\prime}=0 \)
D \( \cdot l\left(\alpha-\alpha^{\prime}\right)+m\left(\beta-\beta^{\prime}\right)+n\left(\gamma-\gamma^{\prime}\right)=0 \) | 2 | Maths |
One diagonal of a square is along the
line \( 8 x-15 y=0 \) and one of its
vertices is \( (1,2) . \) Then the equations of the sides of the square passing through this vertex are
A \( .23 x+7 y=9,7 x+23 y=53 \)
в. \( 23 x-7 y+9=0,7 x+23 y+53=0 \)
c. \( 23 x-7 y-9=0,7 x+23 y-53=0 \)
D. None of these | 2 | Maths |
If \( a-b=4 \) and \( a+b=6, \) find \( a^{2}+b^{2} \)
A . 26
B . 13
c. 53
D. 40 | 2 | Maths |
If \( z_{1}, z_{2}, z_{3} \) be three unimodular complex
numbers then \( \boldsymbol{E}=\left|\boldsymbol{z}_{1}-\boldsymbol{z}_{2}\right|^{2}+ \)
\( \left|z_{2}-z_{3}\right|^{2}+\left|z_{3}-z_{1}\right|^{2} \) then cannot
exceed
\( A \cdot 6 \)
B.
\( c \cdot 12 \)
D. none | 2 | Maths |
Let \( \boldsymbol{d} \in \boldsymbol{R}, \) and \( \boldsymbol{A}= \)
\( \left[\begin{array}{ccc}-2 & 4+d & (\sin \theta)-2 \\ 1 & (\sin \theta)+2 & d \\ 5 & (2 \sin \theta)-d & (-\sin \theta)+2+2 d\end{array}\right. \)
\( \boldsymbol{\theta} \in[\mathbf{0}, \mathbf{2} \boldsymbol{\pi}] . \) If the minimum value of
\( \operatorname{det}(A) \) is \( 8, \) then a value of d is?
A . -7
B. \( 2(\sqrt{2}+2) \)
\( c .-5 \)
D. \( 2(\sqrt{2}+1) \) | 2 | Maths |
A ball rebounds after colliding with the
floor, then in case of inelastic collision:
A. The momentum of the ball before and after collision is
same
B. The mechanical of the ball before and after collision is
same
c. The total momentum of the earth-ball system is conserved
D. The total kinetic energy of earth and ball is conserved | 3 | Physics |
Two identical metal spheres \( A \) and \( B \)
placed in contact are supported on insulating stand. What kind of charge will \( A \) and \( B \) develop when a negatively
charged ebonite rod is brought near \( A \) ? | 3 | Physics |
A fixed volume of iron is drawn into a wire of length \( 1 . \) The extension produced in this wire by a constant force F is proportional to then:-
A \( \cdot \frac{1}{l^{2}} \)
B. \( \frac{1}{l} \)
\( c \cdot l^{2} \)
\( D \) | 3 | Physics |
limiting factor for growth of aquatic organisms is
\( A \cdot C O_{2} \)
в. \( O_{2} \)
c. Mineral elements
D. All of the above | 0 | Biology |
A solenoid having an iron core has its
terminals connected across an ideal DC
source and it is in steady state. If the
iron core is removed, the current flowing
through the solenoid just after removal
of rod.
A . increases
B. decreases
c. remains unchanged
D. nothing can be said | 3 | Physics |
The pH of a \( 10^{-8} M \) solution of
\( \boldsymbol{C H}_{3} \boldsymbol{C O O H} \) would be:
A . 4.00
B. 6.96
c. 8.54
D. 12.70 | 1 | Chemistry |
The general equation of plane which is
parallel to x-axis is
\( \mathbf{A} \cdot a x+b y+c z+d=0, a \neq 0, b \neq 0, c \neq 0 \)
B. \( b y+a x+d=0, a \neq 0, b \neq 0 \)
c. \( a x+c z+d=0, a \neq 0 . c \neq 0 \)
D. \( b y+c z+d=0, b \neq 0, c \neq 0 \) | 2 | Maths |
Which of the points \( A, B, C \) and \( D \) below has the coordinates of the origin?
\( A \cdot A(-3,1) \)
B. B(0, 0)
c. \( c(1,2) \)
D. D(9, o) | 2 | Maths |
Ketones show
A. metamerism
B. position isomerism
C. structural isomerism
D. functional group isomerism | 1 | Chemistry |
Detergents are sodium salts of a long chain:
A. benzene sulphonic acids
B. alkyl hydrogen sulphate
c. both \( A \) and \( B \)
D. none of the above | 1 | Chemistry |
The condition for the points \( (x, y),(-2,2) \) and (3,1) to be collinear is
A. \( x+5 y=8 \)
B. x+5y=6
c. \( 5 x+y=8 \)
D. 5x+y=6 | 2 | Maths |
\( F e S O_{4} \) is a very good absorber for \( N O \)
the new compound formed by this process is found to contain unpaired electrons.
\( A \cdot 4 \)
B. 5
\( c \cdot 3 \)
\( D \) | 1 | Chemistry |
Find the distance between \( \boldsymbol{P}\left(\boldsymbol{x}_{1}, \boldsymbol{y}_{1}\right) \)
and \( Q\left(x_{2}, y_{2}\right) \) when PQ is parallel to the
y-axis. | 2 | Maths |
A chord of length \( 16 \mathrm{cm} \) is drawn in a
circle of radius \( 10 \mathrm{cm} . \) The distance of
the chord from the centre of the circle is
\( A \cdot 8 \mathrm{cm} \)
B. \( 12 \mathrm{cm} \)
\( c \cdot 6 c m \)
D. \( 10 \mathrm{cm} \) | 2 | Maths |
State the speed of sound in air.
A \( \cdot 330 k m s^{-1} \)
B. \( 330 \mathrm{cms}^{-1} \)
c. \( 330 m s^{-1} \)
D. \( 330 \mathrm{mms}^{-1} \) | 3 | Physics |
A ball is dropped from a balloon going up at a speed of \( 7 \mathrm{m} / \mathrm{s} \). If the balloon was
at a height of \( 60 \mathrm{m} \) at the time of dropping the ball, how long will the ball take in reaching the ground? | 3 | Physics |
When \( M g_{3} N_{2} \) react with \( H_{2} O, \) then how many type of gaseous product(s) is/are formed ? | 1 | Chemistry |
The human eye can focus objects at different distances by adjusting the focal length of the eye.
This is due to:
A. Presbyopia
B. Accommodation
c. Near-sightedness
D. Far-sightedness | 3 | Physics |
Total surface area of a cube is \( 54 \mathrm{cm}^{2} \)
Then its side is
\( \mathbf{A} \cdot \mathbf{6} \)
B. 9
c. 12
D. 3 | 2 | Maths |
A light body moving at some speed collides with a heavier body. Which of
the following statements is true?
I. Heavier body applies a greater impulse on the lighter body.
II. The lighter body experiences a greater change of momentum.
III. Acceleration of the lighter body will
be more than the acceleration of the
heavier body.
A. I and II only
B. II only
C. III only
D. II and III only
E . ।, II, and III | 3 | Physics |
Position -time(x-t) grapg of a particle
moving along \( x \) -axis is as shown in the figure.The average speed of particle in
time interval \( t=0 \) to \( t=10 s \) is
\( \mathbf{A} \cdot 2 m s^{-1} \)
в. \( \frac{4}{5}^{m s^{-1}} \)
\( \mathbf{c} \cdot 1 m s^{-1} \)
D. \( \frac{5}{4} m s^{-} \) | 3 | Physics |
Assertion
In the Contact process, sulphur trioxide vapours are absorbed in concentrated
sulphuric add and not in water to obtain sulphuric acid.
Reason Directly dissolving sulphur trioxide in water is not possible due to highly exothermic nature of the reaction.
Acidic vapors are formed. Oleum is reacted with water to form conc.
sulphuric ac
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 production of pH gradient during oxidative metabolism of glucose takes place during
A. Glycolysis
B. Anaerobic respiration
c. Krebs cycle
D. Electron transport chain
E. None of the above | 0 | Biology |
Assertion:
\( \mathbf{P}_{4} \) is more reactive than \( \mathbf{N}_{2} \)
Reason:
\( \mathbf{P}-\mathbf{P} \) bonds are relatively weaker than
\( \mathbf{N}-\mathbf{N} \)
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 |
Which of the following planets is coldest in the solar system?
A. Mercury
B. Venus
c. Neptune
D. Earth | 3 | Physics |
An electron and a proton travel with equal speeds and in the same direction,
at \( 90^{\circ} \) to a uniform magnetic field. They experience forces which are initially
A. in opposite direction and differ by a factor of about 1840
B. in the same direction and differ by a factor of about 1840
c. equal in magnitude but in opposite directions
D. identical | 3 | Physics |
Atomic radius is measured by:
A. Rutherfords \( \alpha \) -ray scattering experiment
B. X-ray diffraction technique
C. Millikan's oil drop method
D. Thomsons water-melon model | 1 | Chemistry |
The process of leaching, alumina using sodium carbonate is called
A. bayer's process
B. decomposition
c. cyanide process
D. hall's process | 1 | Chemistry |
Kelvin is the standard temperature
scale. | 3 | Physics |
Find the measures of the third angle in
degrees
\( 92^{\circ}, 27^{\circ},---- \) | 2 | Maths |
The locus of a point, which is
equidistant from the points (1,1) and \( (3,3), \) is
A \( . y=x+4 \)
в. \( x+y=4 \)
c. \( x=2 \)
D. \( y=2 \)
E \( . y=-x \) | 2 | Maths |
A sanitary worker uses a white chemical having strong smell of chlorine gas to disinfect the water tank
¡) Identify the chemical compound.
ii) Write its chemical formula
iii) Write chemical equation for preparing it | 1 | Chemistry |
Which of the following
can produced emission spectrum?
A. electrons in an excited gas jump up to a higher energy level and release photons.
B. electrons in an excited gas jump down to a lower energy level and release photons.
c. electrons are released from the outer orbitals of an
excited gas.
D. an unstable nucleus releases energy.
E. light is shined on a metal surface and electrons are released. | 3 | Physics |
Focal length of a spherical mirror is \( 200 \mathrm{cm} . \) What will be its radius of
curvature?
A . \( 100 \mathrm{cm} \)
B. \( 25 \mathrm{cm} \)
\( c .50 c m \)
D. \( 400 \mathrm{cm} \) | 3 | Physics |
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