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Electrostatic precipitators are extensively employed to control
A. Water pollution
B. Air pollution
c. Radioactive pollution
D. None of the above | 0 | Biology |
Which of the following is incorrect?
A. \( M g \) burns in air releasing dazzling light rich in \( U V \)
rays
B. \( C a C l_{2} \cdot 6 H_{2} O \) when mixed with ice gives freezing
mixture
c. \( M g \) cannot form complexes
D. \( B e \) can form complexes due to its very small size | 1 | Chemistry |
A balloon weighting \( 50 K g \) is filled with
\( 685 k g \) of helium at 1 at \( m \) pressure and
\( 25^{\circ} \mathrm{C} . \) What will be its pay load if it
displaced \( 5108 k g \) of air?
A \( .4373 k g \)
в. \( 4423 k g \)
c. \( 5793 k g \)
D. None of these | 1 | Chemistry |
Find derivative of \( \tan ^{-1} \frac{\cos x-\sin x}{\cos x+\sin x} \)
w.r.t. \( \boldsymbol{x} \)
A . -1
B.
c. 1
D. | 2 | Maths |
If \( A \) be a \( 3 \times 3 \) matrix and \( I \) be the unit
matrix of that order such that \( \boldsymbol{A}= \)
\( A^{2}+I \) then \( A^{-1} \) is equal to
A . \( A \)
в. \( A+I \)
c. \( I-A \)
D. \( A-I \) | 2 | Maths |
Choose the correct answer from the
alternatives given Water enters capillaries on the venule side as a result of:
A. higher red blood cell concentration on this side
B. increased blood pressure on this side
c. an osmotic pressure gradient
D. active transport from tissue fluid | 0 | Biology |
Which of the following compound has
three \( 1^{\circ} \), one \( 2^{\circ} \) and one \( 3^{\circ} \) carbon?
A \( \cdot C H_{3}\left(C H_{2}\right)_{4} C H_{3} \)
в. \( C H_{3} C H\left(C H_{3}\right) C H_{3} \)
c. \( C H_{3}\left(C H_{2}\right)_{3} C H_{3} \)
D. \( C H_{3} C H\left(C H_{3}\right) C H_{2} C H_{3} \) | 1 | Chemistry |
If
A.C. voltage is applied to a pure capacitor, then voltage across the
capacitor
A \( \cdot \) Leads the current by phase angle \( \left(\frac{\pi}{2}\right) \) rad.
B. Leads the current by phase angle \( (\pi) \) rad.
C - Lags behind the current by phase angle \( \left(\frac{\pi}{2}\right) \) rad.
D. Lags behind the current by phase angle \( (\pi) \) rad. | 3 | Physics |
Assertion
A substance that can either act as an
acid or a base is called ampholyte.
Reason
Bisulphide ion \( \left(\boldsymbol{H} \boldsymbol{S}^{-}\right) \) and bicarbonate
ion \( \left(H C O_{3}^{-}\right) \) are ampholytes.
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 |
A current of \( 5 A \) is passing through a metallic wire of cross-sectional area
\( 4 \times 10^{-6} m^{2} . \) If the density of charge
carriers of the wire is \( 5 \times 10^{26} m^{-3}, \) the
drift velocity of the electrons will be :
A. \( 1 \times 10^{2} \mathrm{ms}^{-1} \)
В. \( 1.56 \times 10^{-2} \mathrm{ms}^{-1} \)
c. \( 1.56 \times 10^{-3} m s^{-1} \)
D. \( 1 \times 10^{-2} \mathrm{ms}^{-1} \) | 3 | Physics |
Which of the following reactions involves the combination of two
elements?
A \( \cdot C a O+C O_{2} \rightarrow C a C O_{3} \)
в. \( 4 N a+O_{2} \rightarrow 2 N a_{2} O \)
c. \( s o_{2}+\frac{1}{2} o_{2} \rightarrow S O_{3} \)
D. \( N H_{3}+H C l \rightarrow N H_{4} C l \) | 1 | Chemistry |
A large quantity of urban sewage is drained into nearby village river. Which among the given conditions would happen after mixing of sewage into the river?
(i) Biochemical oxygen demand (BOD) of receiving water body increases.
(ii) Dissolved oxygen of receiving water body decreases.
(iii) It will not cause mortality among fishes and other aquatic creatures.
(iv) It will lead to the nutrient
enrichment of receiving water body.
A \( \cdot \) (i), (ii) and (iii)
B. (i), (ii) and (iv)
C. (ii) and (iii) only
D. (iii) and (iv) only | 0 | Biology |
The potential in certain region is given
as \( V=2 x^{2}, \) then the charge density of
that region is
A \( \cdot-\frac{4 x}{\varepsilon_{0}} \)
в. \( -\frac{4}{\varepsilon_{0}} \)
\( \mathbf{c} .-4 \varepsilon_{0} \)
D. \( -2 \varepsilon_{0} \) | 3 | Physics |
The first ionization energy for \( N a \) is \( 495 k J / m o l \)
The BEST estimate for sodium's second
ionization energy would be
A. \( 367 k J / \) mol
в. \( 584 k J / m o l \)
c. \( 690 k J / \) mol
D. \( 4560 k J / \) mol | 1 | Chemistry |
A person goes to work by car, train or bus. The probabilities of person travelling by there modes are \( 3 / 10,1 / 2 \) and \( 1 / 5 \) respectively. It is found that chance of person being late for work are \( \mathbf{3} / \mathbf{7}, \mathbf{1} / \mathbf{7} \) and \( \mathbf{5} / \mathbf{7} \) by respective modes
Given that on particular day person reaches late, find the probability that on that day he had travelled by train | 2 | Maths |
If the unit of length is doubled the
numerical value of Area will become
times its original value.
A \( \cdot \frac{1}{2} \)
B. \( \frac{1}{4} \)
\( c \cdot 2 \)
D. 4 | 3 | Physics |
Correct order of boiling point is:
A. Methanol < ethylene glycol < ethanol
B. Methanol < ethanol < ethylene glycol
C. Ethanol < ethylene glycol < methanol
D. Ethylene glycol < methanol < ethanol | 1 | Chemistry |
Evaluate the following limits. \( \lim _{x \rightarrow 0} \frac{\sqrt{1+3 x}-\sqrt{1-3 x}}{x} \) | 2 | Maths |
Assertion
In a Daniell cell, if the concentration of
\( C u^{2+} \) and \( Z n^{2+} \) ions are doubled, the
EMF of the cell will be doubled.
Reason
f the concentration of ions in contact
with metals is doubled, the electrode
potential is doubled.
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 |
In the following sequence of reaction all stereoisomers of (X) have been taken.
Find \( Q \) and \( R \)
Here \( Q= \) Total number of stereoisomers
of \( Y \)
\( \mathrm{R}= \) Total number of stereoisomers of \( \mathrm{Z} \)
What is the sum of \( Q \) and \( R ? \) | 1 | Chemistry |
When the input of a two input logic gate are 0 and \( 0, \) the output is \( 1 . \) When the inputs are 1 and 0 , the output is zero. The type of logic gate is
A. xor
B. NAND
c. NOR
D. or | 3 | Physics |
A particle moves along +x-axis with initial velocity \( 5 \mathrm{m} / \mathrm{s} \). If acceleration (a)
varies with time (t) as shown in a-tt
graph, then the velocity of the particle
just after 4 second is
A \( .2 .5 m / s \)
B. \( 10 \mathrm{m} / \mathrm{s} \)
c. \( -1.25 m / s \)
D. \( -5 m / s \) | 3 | Physics |
Construct a \( \triangle A B C \) in which \( A B= \) \( 4 \mathrm{cm}, B C=5 \mathrm{cm} \) and \( A C=6 \mathrm{cm} \)
Now, construct a triangle similar to
\( \triangle A B C \) such that each of its sides is
two-third of the corresponding sides of \( \triangle A B C . \) Also, prove your assertion. | 2 | Maths |
Starch is made by photosynthesis in the leaves of plants. It is found in rice, potatoes, and many vegetables sources.
It can be detected with a drop of iodine.
In the presence of starch, iodine:
A. vapourises
B. turns blue
c. decolourises
D. turns into a black solid | 1 | Chemistry |
As per given sequence of reaction, His:
\[
\begin{aligned}
\mathrm{Ca}+\mathrm{H}_{2} & \frac{\Delta}{\Delta} \rightarrow \mathrm{F} \text { (Solid) } \\
(\mathrm{F})+\mathrm{CaCl}_{2} & \longrightarrow(\mathrm{G}) \text { Solid } \\
(\mathrm{G})+\mathrm{H}_{2} \mathrm{O} & \longrightarrow(\mathrm{H}) \text { gas }
\end{aligned}
\]
\( \mathbf{A} \cdot H C l \)
в. \( C a H C l \)
\( c \cdot C l_{2} \)
D. \( H_{2} \) | 1 | Chemistry |
Energy band gap between valence band and conduction band for semiconductor
is:
A. approximately 1 ev
B. less than conductors
c. equal to conductors
D. more than insulator | 3 | Physics |
There are three Newton's laws of motion
namely first,second and third laws.We
can derive
A. Second and third laws from the first law
B. First and second laws from the third law
c. Third and first laws from the second law
D. All the three laws are independent of each other | 3 | Physics |
The structure of bicyclo [1.1.0] butane is:
\( \mathbf{A} \)
B.
\( c \)
D. | 1 | Chemistry |
A stone is released from the top of a
tower of height \( 19.6 \mathrm{m} \). Calculate its
final velocityjust before touching the ground. | 3 | Physics |
Which enzyme converts glucose to ethanol?
A . Diesterase
B. Invertase
c. zymase
D. Both (2) and (3) | 1 | Chemistry |
State whether true or false.
The other name for the voice box in
humans is Larynx.
A. True
B. False | 3 | Physics |
A small ball of mass \( m \) collides with a
rough wall having coefficient of friction
\( \mu \) at an angle \( \theta \) with the normal to the
wall. If after collision the ball moves
angle \( \alpha \) with the normal to the wall and
the coefficient of restitution is \( e \), then
find the reflected velocity \( \nu \) of the ball
just after collision. | 3 | Physics |
An artery can be distinguished from a vein in having
A. Thicker wall
B. Oxygenated blood
c. More haemoglobin
D. Both A and B | 0 | Biology |
For measuring time in sports events
like sprinting, milisecond\( (\boldsymbol{m s}) \) is a commonly used unit of time. 1 ms \( =? \)
\( \mathbf{A} \cdot 10^{-12} s \)
B. \( 10^{-9} s \)
\( \mathbf{c} \cdot 10^{-3} s \)
D. None of these | 3 | Physics |
The angular momentum of a flywheel having a moment of inertia of \( 0.4 k g m^{2} \)
decreases from 30 to \( 20 \mathrm{kg} m^{2} / s \) in a period of 2 second. Find the average torque in \( \mathrm{Nm} \) acting on the flywhee during this period. | 3 | Physics |
f \( x \) is the \( n^{t h} \) term of the \( A P \)
\( 5 \frac{1}{2}, 11,16 \frac{1}{2}, 22 \ldots \ldots \) with \( x=550 \)
find \( ^{\prime} \boldsymbol{n}^{\prime} \) | 2 | Maths |
In the process of respiration, the largest amount of energy is produced during
A. Anaerobic respiration.
B. Krebs cycle and oxidative phosphorylation
c. Glycolysis.
D. None of the above | 0 | Biology |
What is the order of magnitude of the resistance of a dry human body?
A . \( 10 \Omega \)
B . \( 10^{4} \Omega \)
c. 10 М\Omega
D. \( 10 \mu \Omega \) | 3 | Physics |
All samples of carbon dioxide contain carbon and oxygen in the mass ratio of
\( \mathbf{3}: 8 . \) This is in agreement with the law
of :
A. conservation of mass
B. constant proportion
c. multiple proportions
D. gaseous volumes | 1 | Chemistry |
Consider a ball at rest in the middle of a
toy wagon. When the wagon is pulled forward, the ball:
A. Rolls forward
B. Stays stationary
c. Rolls sidewards
D. Rolls backwards | 3 | Physics |
The atoms of different elements which
have the same mass number but different atomic number are
called
A. Isotopes
B. Isobars
c. Isotones
D. None of the above | 1 | Chemistry |
If \( y=\sin \left(\log _{e} x\right) \) prove that \( \frac{d y}{d x}= \)
\( \frac{\sqrt{1-y^{2}}}{x} \) | 2 | Maths |
Write equations of the following
reactions:
(i) Friedel-Crafts reaction alkylation of
anisole.
(ii) Nitration of anisole.
(iii) Bromination of anisole in ethanoic
acid medium.
(iv) Friedel-Crafts acetylation of anisole. | 1 | Chemistry |
Which of the following is not correctly matched?
A . Acidic oxides \( -P_{2} O_{5}, N O_{2}, C l_{2} O_{7} \)
B. Basic oxides - \( N a_{2} O, C a O, M g O \)
c. Neutral oxides \( -C O_{2}, C O, B e O \)
D. Amphoteric oxides - \( Z n O, S n O, A l_{2} O_{3} \) | 1 | Chemistry |
Assertion
The heat absorbed during the isothermal expansion of an ideal gas against vacuum is zero.
Reason
The volume occupied by the molecules of an ideal gas is zero.
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 osmotic pressure at \( 293 \mathrm{K} \)
\( A \cdot 2 \)
B. 3
\( c \cdot 4 \)
D. 4.805 | 1 | Chemistry |
Define molar conductivity. How it is
related with conductivity. | 1 | Chemistry |
0.6 mole of \( N H_{3} \) in a reaction vessel of
\( 2 d m^{3} \) capacity was brought to
equilibrium. The vessel was then found
to contain 0.15 mole of \( H_{2} \) formed by
the reaction
\( \mathbf{2} N \boldsymbol{H}_{3}(\boldsymbol{g}) \rightleftharpoons \boldsymbol{N}_{2}(\boldsymbol{g})+\mathbf{3} \boldsymbol{H}_{2}(\boldsymbol{g}) \)
Which of the following statements is
true?
A. 0.15 mole of the original \( N H_{3} \) had dissociated at equilibrium
B. 0.55 mole of ammonia is left in the vessel
C . At equilibrium the vessel contained 0.45 mole of \( N_{2} \)
D. The concentration of \( N H_{3} \) at equilibrium is 0.25 mole per \( d m^{3} \) | 1 | Chemistry |
\( \mathbf{A} \) time \( \boldsymbol{t}=\mathbf{0} \) a particle starts moving
along the \( x \) axis. If its kinetic energy
increases uniformly with \( t, \) the net force acting on it must be
A. Constant
B. Proportional to \( t \)
C . Inversely proportional to \( t^{2} \)
D. Proportional to \( 1 / \sqrt{t} \) | 3 | Physics |
Three persons \( A, B \) and \( C \) apply for a job of Manager in a Private company. Chance of their selection \( (A, B \text { and } C) \)
are in the ratio \( 1: 2: 4 . \) The probability
that \( A, B \) and \( C \) can introduce changes to improve profits of company are 0.8,0.5 and 0.3 respectively, if the changes does not take place, find the probability that it is due to the
appointment of \( \boldsymbol{C} \) | 2 | Maths |
Find mole fraction of \( N a O H \) in its \( 10 \% \)
aqueous solution. | 1 | Chemistry |
571787 is a perfect cube
Find the cube root of the following number: | 2 | Maths |
If \( A, B \) and \( C \) are mutually exclusive and exclusive events of a random
experiment such that \( \boldsymbol{P}(\boldsymbol{B})=\frac{\boldsymbol{3}}{2} \boldsymbol{P}(\boldsymbol{A}) \)
and \( P(C)=\frac{1}{2} P(B), \) then \( P(A \cup C)= \)
A \( \cdot \frac{10}{13} \)
в. \( \frac{3}{13} \)
c. \( \frac{6}{13} \)
D. \( \frac{7}{13} \) | 2 | Maths |
The length of potentiometer wire is \( 10 \mathrm{m} \) and is connected in series with an
accumulator. The e.m.f. of a cell balances against \( 250 \mathrm{cm} \) length of wire. If the length of potentiometer wire is increased by \( 1 \mathrm{m} \), calculate the new balancing length of wire.
A . 2.00
B . 2.25
c. 2.50
D. 2.75 | 3 | Physics |
Find the vector equation of the plane passing through (1,2,3) and perpendicular to the plane
\( \vec{r} \cdot(\hat{i}+2 \hat{j}-5 \hat{k})+9=0 \) | 2 | Maths |
A car was travelling at a speed of 10 \( \mathrm{m} / \mathrm{s} . \) After the brakes were applied, it start to decelerate at a rate of \( 2 m / s^{2} \) and finally came to rest. Find the distance traveled by the car before coming to rest.
A. \( 10 \mathrm{m} \)
B. 15 \( m \)
c. \( 25 \mathrm{m} \)
\( D \cdot 35 \mathrm{m} \) | 3 | Physics |
Ethanol is denatured (made unfit for
human consumption) by adding a poisonous substance. Identify it
A. Tartaric acid
B. Methyl alcohol
c. Acetic acid
D. Stearic acid | 1 | Chemistry |
A body of mass \( 3 \mathrm{kg} \) is under a force which causes a displacement in it, given by \( s=t^{2} / 3(\text { in } \mathrm{m}) . \) Find the work
done by the force in 2 second.
A . 2
B . 3.8
c. 5.2 J
D . 2.6 | 3 | Physics |
The impression of an image does not vanish immediately from the retina. It persists there for about \( 1 / 6^{t h} \) of \( a \) second
A. True
B. False | 3 | Physics |
A man stands on the surface of the
earth. The number of action reaction
pairs that can be seen here is/are
\( A \)
B. 2
\( c \cdot 4 \)
D. 5 | 3 | Physics |
Define mobility of a charge carrier
What is its relation with relaxation
time? | 3 | Physics |
Masses of two isobars \( _{29}^{64} \mathrm{Cu} \) and \( _{30}^{64} \mathrm{Zn} \) are \( 63.9298 a m u \) and \( 63.9292 a m u \)
respectively. It can be concluded from these data that
A. Both the isobars are stable
B. \( 64 Z n \) is radioactive, decaying to \( ^{64} C u \) through \( \beta- \) decay
c. \( ^{64} C u \) is radioactive, decaying to \( ^{64} Z n \) through \( \lambda \) \( \operatorname{decay} \)
D. \( ^{64} C u \) is radioactive, decaying to \( ^{64} Z n \) through \( \beta- \) decay | 3 | Physics |
Find the total force exerted by liquid \( \boldsymbol{A} \)
on the cylinder | 3 | Physics |
\( \sim(p \leftrightarrow q) \) is equivalent to
\( \mathbf{A} \cdot \sim p \wedge \sim q \)
\( \mathbf{B} \cdot \sim p \vee \sim q \)
\( \mathbf{c} \cdot(p \wedge \sim q) \vee(\sim p \wedge q) \)
D. none of these | 2 | Maths |
If \( f(x)=\ln \frac{1+x}{1-x} \) and \( g(x)=\frac{3 x+x^{3}}{1+3 x^{2}} \)
then \( \boldsymbol{f}[\boldsymbol{g}(\boldsymbol{x})] \) equals.
A. \( f(x) \)
B . \( [f(x)]^{3} \)
\( \mathbf{c} \cdot 3 f(x) \)
D. \( f(x)^{2} \) | 2 | Maths |
A mixture of \( \alpha \) -amino acids is obtained
when proteins are hydrolysed by:
A. acids
B. bases
c. enzymes
D. all of the above | 1 | Chemistry |
Find the \( x \) and \( y \) in the following figure: | 2 | Maths |
If \( \cos A=\frac{12}{13}, \) then calculate cot \( A \) | 2 | Maths |
The force responsible for raising water
in \( 100 \mathrm{ft} \) tall plant is
A. Transpiration pull
B. Root pressure
c. Air pressure
D. Capillary action | 0 | Biology |
ff \( y=\operatorname{en}\left\{\frac{x+\sqrt{\left(a^{2}+x^{2}\right)}}{a}\right\}, \) then the
value of \( \frac{\boldsymbol{d} \boldsymbol{y}}{\boldsymbol{d} \boldsymbol{x}} \) is
A \( \cdot \sqrt{a^{2}-x^{2}} \)
B. \( a \sqrt{a^{2}+x^{2}} \)
c. \( \frac{1}{\sqrt{a^{2}+x^{2}}} \)
D. \( x \sqrt{a^{2}+x^{2}} \) | 2 | Maths |
The ore that is concentrated by froth floatation process is
A. cinnabar
B. bauxite
c. malachite
D. zineite | 1 | Chemistry |
To construct a triangle similar to a
\( \operatorname{given} A B C \) with its sides \( \frac{7}{3} \) of the corresponding sides of \( \Delta A B C, \) draw a
ray \( B X \) making acute angle with \( B C \)
and \( X \) lies on the opposite side of \( A \)
with respect to \( B C . \) The points
\( B_{1}, B_{2}, \dots, B_{7} \) are located at equal
distances on \( B X, B_{3} \) is joined to \( C \)
A. True
B. False | 2 | Maths |
A particle of mass \( \mathrm{M} \) is situated at the
centre of spherical shell of same mass and radius a. The gravitational potential at a point situated at a/2 distance from the centre will be
A. \( -\frac{3 G M}{a} \)
В. \( -\frac{2 G M}{a} \)
c. \( -\frac{G M}{a} \)
D. \( -\frac{4 G M}{a} \) | 3 | Physics |
A particle moves in a circle of radius
1.0 \( c m \) with a speed given by \( v=2 t \)
where \( v \) is in \( c m / s \) and \( t \) in
seconds. Find the radial acceleration of
the particle at \( t=1 s: \)
\( \mathbf{A} \cdot 2.0 \mathrm{cms}^{-2} \)
B. \( 3.0 \mathrm{cms}^{-2} \)
c. \( 4.0 \mathrm{cms}^{-2} \)
D. \( 5.0 \mathrm{cms}^{-2} \) | 3 | Physics |
\( A \) and \( B \) are two events such that
\( \boldsymbol{P}(\boldsymbol{A}) \neq 0 . \) Find \( \boldsymbol{P}(\boldsymbol{B} \mid \boldsymbol{A}), \) if
(i) \( A \) is a subset of \( B \)
(ii) \( \boldsymbol{A} \cap \boldsymbol{B}=\boldsymbol{\phi} \) | 2 | Maths |
Calculate the following limits. \( \lim _{x \rightarrow-3} \frac{x+3}{\sqrt{x+4}-1} \) | 2 | Maths |
Explain how does nitrogen exhibit anomalous behaviour amongst group
15 elements. | 1 | Chemistry |
A certain region of a soap bubble reflects red light of vacuum wavelength \( \lambda=650 n m . \) What is the minimum
thickness that this region of the soap bubble could have? Take the index of
reflection of the soap film to be 1.41
A. \( 1.2 \times 10^{-7} \mathrm{m} \)
B. \( 650 \times 10^{-9} \mathrm{m} \)
c. \( 120 \times 10^{7} m \)
D. \( 650 \times 10^{5} \mathrm{m} \) | 3 | Physics |
\( \boldsymbol{D}=\left|\begin{array}{ccc}\mathbf{1 8} & \mathbf{4 0} & \mathbf{8 9} \\ \mathbf{4 0} & \mathbf{8 9} & \mathbf{1 9 8} \\ \mathbf{8 9} & \mathbf{1 9 8} & \mathbf{4 4 0}\end{array}\right|= \)
\( A \)
B. -
c. zero
\( D \) | 2 | Maths |
Identify all the possible monochloro structural isomers expected to be
formed on free radical
monochlorination of
\( \left(\boldsymbol{C H}_{3}\right)_{2} \boldsymbol{C H C H}_{2} \boldsymbol{C H}_{3} \)
In the given molecule, there are four
different types of hydrogen atoms. Replacement of these hydrogen atoms will give the following?
\( \mathbf{A} \cdot\left(C H_{3}\right)_{2} C H C H_{2} C H_{2} C l \)
B \( \cdot\left(C H_{3}\right)_{2} C H C H(C l) C H_{3} \)
\( \mathbf{c} \cdot\left(C H_{3}\right)_{2} C(C l) C H_{2} C H_{3} \)
D. \( C H_{3} C H\left(C H_{2} C l\right) C H_{2} C H_{3} \) | 1 | Chemistry |
Divide:
459.5 by 100 | 2 | Maths |
Select the correct options.
This question has multiple correct options
A. Isoelectric point is the \( \mathrm{pH} \) at which an amino acid exists primarily in its neutral from
B. Isoelectric point is the average of \( p K_{a} \) value of \( \alpha \) \( C O O H \) amino \( \alpha-N H_{3}^{+} \) groups[valid only for neutral amino acid]
C . Glycine is characterised by two \( p K_{a} \) values
D. For neutral amino acid, the concentration of zwitter ion is maximum at its isoelectric point | 1 | Chemistry |
Calculate the work required to be done to stop a car of \( 1500 \mathrm{kg} \) moving at a velocity of \( 60 \mathrm{km} / \mathrm{h} ? \) | 3 | Physics |
Solve:
\( x \sin 45^{\circ} \cdot \cos 45^{\circ} \cdot \tan 60^{\circ}=\tan 45^{\circ} \)
\( \cos 60^{\circ} \) | 2 | Maths |
Between \( t=10 \) s and \( t=20 s, \) the
merry-go-round.
A. rotates clockwise, at a constant rate
B. rotates clockwise, and slows down
C. rotates counterwise, at a constant rate
D. rotates counterclockwise, and slows, down | 3 | Physics |
The probability of event is 0
A. Sure
B. Impossible
c. Exclusive
D. None of these | 2 | Maths |
Give reason for these type of disorder.
What dife beara degensiation of What and ovaries etcrint their growing period | 0 | Biology |
The value of \( \cos ^{-1}\left(\cos \frac{7 \pi}{6}\right) \) is equal to
A \( \cdot \frac{7 \pi}{6} \)
в. \( \frac{5 \pi}{6} \)
\( c \cdot \frac{\pi}{3} \)
D. | 2 | Maths |
The correct order of the calculated spinonly magnetic moments of complexes
(A) to (D) is:
\( (A) N i(C O)_{4} \)
(B) \( \left[\boldsymbol{N} \boldsymbol{i}\left(\boldsymbol{H}_{2} \boldsymbol{O}\right)_{6}\right] \boldsymbol{C l}_{2} \)
\( (\mathrm{C}) N a_{2}\left[N i(C N)_{4}\right] \)
(D) \( P d C l_{2}\left(P P h_{3}\right)_{2} \)
A \( \cdot(C)<(D)<(B)<(A) \)
B. \( (C) \approx(D)<(B)<(A) \)
c. \( (A) \approx(C)<(B) \approx(D) \)
D. \( (A) \approx(C) \approx(D)<(B) \) | 1 | Chemistry |
Containers which are light weight, lower price, good strength and easy to handle is made up of :
A. Plastic
B. Metal
c. wood
D. Brick | 1 | Chemistry |
The horizontal flow of fluid depends
upon
A. Pressure difference
B. Amount of fluid
c. Density of fluid
D. All the above | 3 | Physics |
Which of the following is not a method of extraction of metals?
A. Enrichment of ore
B. Refining
c. Magnetic separation
D. None of the above | 1 | Chemistry |
If in a triangle \( A B C, 2 \cos A= \)
\( \sin B \operatorname{cosec} C, \) then
\( \mathbf{A} \cdot a=h \)
в. \( b=c \)
\( \mathbf{c} \cdot c=a \)
D. \( 2 a=b c \) | 2 | Maths |
In the detection test of halogen, the
sodium fusion extract is acidified with
and then treated with
A. nitric acid, silver chloride
B. sulphuric acid, silver nitrate
C. nitric acid, silver nitrate
D. sulphuric acid, silver chloride | 1 | Chemistry |
What are alkyl halides? How is n-propyl bromide prepared from propylene? | 1 | Chemistry |
\( \boldsymbol{\alpha}-\boldsymbol{D}-\boldsymbol{G} \boldsymbol{l} \boldsymbol{u} \operatorname{cose} \) and \( \boldsymbol{\beta}-\boldsymbol{D}- \)
Glucose are not:
A. Epimers
B. Anomers
c. Enationers
D. Diastereomers | 1 | Chemistry |
If
\( \int \frac{2 d x}{[(x-5)+(x-7)] \sqrt{(x-5)(x-7)}} \)
\( \boldsymbol{f}[\boldsymbol{g}(\boldsymbol{x})]+\boldsymbol{c}, \) then
A \( \cdot f(x)=\sin ^{-1} x, g(x)=\sqrt{(x-5)(x-7)} \)
B . \( f(x)=\sin ^{-1} x, g(x)=(x-5)(x-7) \)
C \( \cdot f(x)=\tan ^{-1} x, g(x)=\sqrt{(x-5)(x-7)} \)
D. \( f(x)=\tan ^{-1} x, g(x)=(x-5)(x-7) \) | 2 | Maths |
A reaction time for an automobile driver
is 0.7 sec. If the automobile can be
declared at \( 5 ~ m / s^{2} \) calculate the total distance travelled in coming to stop from an initial velocity of \( 8.33 m / s \) after a signal is observed.
A . \( 12.77 m \)
в. \( 14.82 m \)
\( c .16 .83 m \)
D. \( 19.65 m \) | 3 | Physics |
When potential difference is applied across an electrolyte, then Ohm's law is obeyed at
A. zero potential
B. very low potential
c. negative potential
D. high potential | 3 | Physics |
Without actually calculating the cubes, find the value of each of the following:
\( (28)^{3}+(-15)^{3}+(-13)^{3} \)
This question has multiple correct options
A . 17530
B. 14850
c. 12022
D. 16380 | 2 | Maths |
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