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Find the number of solutions of the
equations \( (\sin x-1)^{3}+(\cos x-1)^{3}+(\sin x)^{3}= \)
\( (2 \sin x+\cos x-2)^{3} \) in \( [0,2 \pi] \)
| 2 |
Maths
|
For the given data
\( \boldsymbol{A}+\boldsymbol{B} \rightleftharpoons \boldsymbol{C}+\boldsymbol{D} ; \boldsymbol{E}^{o}=\boldsymbol{a} \boldsymbol{v} \boldsymbol{o l} \boldsymbol{t} ; \boldsymbol{K}_{c}=\boldsymbol{K}_{1} \)
\( \mathbf{2} \boldsymbol{A}+\mathbf{2} \boldsymbol{B} \rightleftharpoons \mathbf{2} \boldsymbol{C}+\mathbf{2} \boldsymbol{D} ; \boldsymbol{E}^{\boldsymbol{o}}= \)
\( \boldsymbol{b} \boldsymbol{v} \boldsymbol{o l} \boldsymbol{t} ; \boldsymbol{K}_{c}=\boldsymbol{K}_{2} \)
Select the correct choices:
This question has multiple correct options
\( \mathbf{A} \cdot a=b \)
В. \( K_{2}=K_{1}^{2} \)
\( \mathbf{c} \cdot a \neq b \)
\( \mathbf{D} \cdot b=a^{2} \)
| 1 |
Chemistry
|
The following acids have been arranged in the order of decreasing acid strength. Identify the correct order: CIOH (I), BrOH
(II), IOH (III).
A \( I>I I>I I I \)
\( I \)
В. \( I I>I>I I I \)
c. \( I I I>I I>I \)
I I \( I>I I I>I I \)
\( I \)
| 1 |
Chemistry
|
Add an express the sum as a mixed
fraction:
\( \frac{-12}{5} \) and \( \frac{43}{10} \)
| 2 |
Maths
|
Simplify \( 3 x^{2}+5 x y-4 y^{2}+x^{2}- \)
\( 8 x y-5 y^{2} \)
| 2 |
Maths
|
Which equation is correctly labeled
oxidation or reduction?
\( \mathbf{A} \cdot H_{2} S=S+2 e^{-}+2 H^{+} \)
oxidation
B \( \cdot S O_{2}+4 e^{-}+2 H_{2} O=S+4 O H^{-} \)
oxidation
\( \mathbf{C} \cdot N H_{3}+H C l=N H_{4}++C l_{2}^{-} \)
oxidation
D. \( N a C l+A g N O_{3}=A g C l+N a N O_{3} \)
reduction
\( \mathrm{E} \cdot M n^{2+}=M n O_{4} \)
reduction
| 1 |
Chemistry
|
Ultraviolet light of \( 6.2 \mathrm{eV} \) falls on aluminium surface (work function =
4.2eV). The kinetic energy in joules of the fastest electron emitted is
approximately:
A \( \cdot 3 \times 10^{-21} \)
B . \( 3 \times 10^{-19} \)
c. \( 3 \times 10^{-17} \)
D. \( 3 \times 10^{-15} \)
| 1 |
Chemistry
|
Coniferales and Cycadales have respectively.
A. Motile sperms
B. Motile and non motile sperms
c. Non motile and motile sperms
D. Non motile sperms
| 0 |
Biology
|
Let \( \vec{a}, \vec{b}, \vec{c} \) be vectors of length 3,4 and 5 respectively. Let \( \vec{a} \) be perpendicular to \( (\vec{b}+\vec{c}), \vec{b} \) to \( (\vec{c}+\vec{a}) \) and \( \vec{c} \) to \( (\vec{a}+\vec{b}) \)
Find the length of the vector \( \vec{a}+\vec{b}+\vec{c} \).
| 2 |
Maths
|
The number of solutions for
\( \sin \left(\frac{\pi x}{2}\right)=\frac{99 x}{500} \) is:
\( A \cdot 3 \)
B. 5
\( c \cdot 7 \)
\( D \)
| 2 |
Maths
|
The ability of eye to focus on both near and far objects is called:
A. Presbyopia
B. Myopia
c. Hypermetropia
D. Power of accommodation
| 3 |
Physics
|
Which of the following is not true, if \( \mathbf{A} \)
and \( B \) are two matrices each of order
\( \boldsymbol{n} \times \boldsymbol{n}, \) then
\( \mathbf{A} \cdot(A+B)^{T}=B^{T}+A^{T} \)
\( \mathbf{B} \cdot(A-B)^{T}=A^{T}-B^{T} \)
\( \mathbf{C} \cdot(A B)^{T}=A^{T} B^{T} \)
\( \mathbf{D} \cdot(A B C)^{T}=C^{T} B^{T} A^{T} \)
| 2 |
Maths
|
Solve: \( \frac{1}{3(x-1)}-\frac{1}{4(x-2)}=1 \)
| 2 |
Maths
|
Fusion reaction take place at high
temperature because
A. atoms are ionized at high temperature
B. molecules break up at high temperatures
C . nuclei break up at high temperature
D. kinetic energy is high enough to overcome repulsion between nuclei
| 3 |
Physics
|
Heavy water is:
\( \mathbf{A} \cdot H_{2} O \)
B. water obtained by repeated distillation
\( c \cdot D_{2} O \)
D. water at \( 4^{\circ} \mathrm{C} \)
| 1 |
Chemistry
|
Gelatin has the minimum protective
powers.
A. True
B. False
c. Ambiguous
D. Data insufficient
| 1 |
Chemistry
|
The velocity-time graph of a body is
given below.
The maximum acceleration in \( m s^{-2} \) is
| 3 |
Physics
|
The value of the determinant
\[
\left|\begin{array}{ccc}
\mathbf{1} & \cos (\boldsymbol{\alpha}-\boldsymbol{\beta}) & \mathbf{c o s} \boldsymbol{\alpha} \\
\cos (\boldsymbol{\alpha}-\boldsymbol{\beta}) & \mathbf{1} & \cos \beta \\
\cos \boldsymbol{\alpha} & \cos \beta & \mathbf{1}
\end{array}\right|
\]
A \( \cdot \alpha^{2}+\beta^{2} \)
B \( \cdot \alpha^{2}-\beta^{2} \)
\( c .1 \)
\( D \)
| 2 |
Maths
|
Two thin similar convex glass pieces are joined together front to front, with its rear portion silvered such that a sharp image is formed 0.2 \( \mathrm{m} \) for an object at infinity. When the air between the glass pieces is replaced by water \( \left(\mu=\frac{4}{3}\right), \) find the position of image.
| 3 |
Physics
|
In the azeotropic mixture of \( H C l \) and
water, the percentage of \( H C l \) is:
A . 20.2\%
B . 11.1\%
c. 44.4\%
D. 10\%
| 1 |
Chemistry
|
Write cell reactions in lead storage battery during discharge.
| 1 |
Chemistry
|
Consider the circuit below. The bulb will
light up if:
\( A \cdot S_{1} S_{2} \) and \( S_{3} \) are all closed
\( 3 \cdot S_{1} \) is closed but \( S_{2} \) and \( S_{3} \) are open
\( c \cdot s_{1} \) and \( S_{3} \) are closed but \( S_{2} \) is open
D. None of thes
| 3 |
Physics
|
Which of the following is not a true fossil?
A. Placoderm
B. limulus
c. Archeopteryx
D. Therapsid
| 3 |
Physics
|
The diagram represents an atom 'X!
Answer the following.
Atom 'X' will lose electrons to become
\( \boldsymbol{X}^{1+} \)
A. True
B. False
| 1 |
Chemistry
|
A solenoid of inductance \( 2 \mathrm{H} \) carries a
current of \( 1 A . \) What is the magnetic
energy stored in a solenoid?
A . 2
B . 1 J
c. 4 J
D. 5 J
| 3 |
Physics
|
A teak wood log is cut first in the form of a cuboid of length \( 2.3 \mathrm{m}, \) width \( 0.75 \mathrm{m} \)
and of a certain thickness. Its volume is
\( 1.104 \mathrm{m}^{3} . \) How many rectangular planks of size \( 2.3 \mathrm{m} \times 0.75 \mathrm{m} \times 0.04 \mathrm{m} \) can be
cut from the cuboid?
| 2 |
Maths
|
Radiation of wavelength 242 nm is
sufficient to ionize the sodium atom.
Calculate the ionization energy in
\( \boldsymbol{k J} \boldsymbol{m o l}^{-1} \cdot\left(\boldsymbol{n}=\mathbf{6 . 6 2 5} \times \mathbf{1 0}^{-\mathbf{3 4}} \boldsymbol{J}-\boldsymbol{s}\right) \)
A. \( 493.6 k J \)
\( J \)
B . \( 6.625 \times 10^{3} J \)
c. \( 242 k J \)
D. \( 1324 k J \)
| 1 |
Chemistry
|
If a parent cell has eight chromosomes, then the daughter cells following meiosis will have:
A. four chromosomes
B. sixteen chromosomes
c. eight chromosomes
D. any one of these
| 0 |
Biology
|
The weight of one molecule of \( C_{60} H_{122} \)
is:
A. \( 1.2 \times 10^{-20} g \)
B . \( 5.025 \times 10^{23} g \)
c. \( 1.4 \times 10^{-21} g \)
D. \( 6.023 \times 10^{23} g \)
| 1 |
Chemistry
|
The chemical method used in the
concentration of ore is also known as:
A. Bleaching
B. Leaching
c. Roasting
D. Calcination
| 1 |
Chemistry
|
The reaction is:
\( \mathbf{A} \cdot S_{N} \)
B. \( S_{N} \) ?
\( \mathbf{c} \cdot E_{1} \)
\( D \cdot E_{2} \)
| 1 |
Chemistry
|
Find out longitudinal stress and
tangential stress on the given fixed
block
| 3 |
Physics
|
A gaseous mixture contains \( 70 \% N_{2} \)
and a \( 30 \% \) unknown gas, by volume. If the average molecular weight of gaseous mixture is \( 37.60, \) the molecular weight of unknown gas is:
A . 42.2
B. 60
c. 40
D. 50
| 3 |
Physics
|
Use hund's rule to derive the electronic
configuration of \( C e^{+3} \) ion, and calculate
its magnetic moment on the basis of 'spin only' formula. ( For \( \mathrm{Ce}, \mathrm{Z}=58 \) )
| 1 |
Chemistry
|
What are
¡) Magnetic declination
ii) Magnetic dip
iii) Horizontal component of earth's
magnetic field at a place?
| 3 |
Physics
|
\( \ln a \Delta A B C, I f A C>A B \) and the
bisector of \( \angle A \) meets \( B C \) at \( E \), then
A. \( C E>B E \)
в. \( C E<B E \)
c. \( C D>B E \)
D. \( C D<B E \)
| 2 |
Maths
|
The intermediate image formed by the objective of a compound microscope is:
A. real, inverted and magnified
B. real, erect and magnifiedd
c. virtual, erect and magnified
D. virtual, inverted and magnified
| 3 |
Physics
|
In a
multiplying the previous term by a constant.
A. geometric sequence
B. arithmetic sequence
c. geometric series
D. harmonic sequence
| 2 |
Maths
|
A body of mass \( 2 \mathrm{kg} \) is kept by pressing to a vertical wall by a force of \( 100 \mathrm{N} \). the coefficient of friction between wall and
body is 0.3 . then the frictional force is equal to:
\( A \cdot 6 N \)
B. 20 N
c. \( 600 \mathrm{N} \)
D. 700 N
| 3 |
Physics
|
A sample of water has a hardness
expressed as 77.5 ppm \( C a^{2+} . \) This sample is passed through an ion
exchange column and \( C a^{2+} \) is replaced
by \( \boldsymbol{H}^{+} . \) Select correct statement(s).
This question has multiple correct options
A. pH of the water after it has been so treated is 2.4
B. Every \( C a^{2+} \) ion is replaced by one \( H^{+} \) ion.
C . Every \( C a^{2+} \) ion is replaced by two \( H^{+} \) ions.
D. pH of the solution remains unchanged.
| 1 |
Chemistry
|
The purpose of exhaust system in lime kilns where the decomposition of limestone takes place is to:
A. drive away, \( C O_{2} \) gas and make the reaction proceed for completion.
B. reduce the temperature of the reaction
c. to make the reaction attain equilibrium in less time
D. all the above
| 1 |
Chemistry
|
Fibres would have
A. Thick walled
B. Thin walled
C. Thickening of wall at corners
D. Dense cytoplasm
| 0 |
Biology
|
Rusting of iron is an example of reaction.
A . fast
B. slow
c. endothermic
D. can't say
| 1 |
Chemistry
|
The efficiency of a surfactant towards
detergency depends upon its:
\( \mathbf{A} \cdot \) СМС
B. Kraft temperature
C. nature of hydrophilic and hydrophobic core
D. all of these
| 1 |
Chemistry
|
Identify the mode for the following data:
12 \( \mathbf{5 6} \) 67 \begin{tabular}{r}
34 \\
\hline
\end{tabular} Height(cm)
Swimmers 1 1 2
A . 34
B. 56
c. 67
D. 10
| 2 |
Maths
|
Concentrated sulphuric acid cannot be
used to prepare \( \boldsymbol{H} \boldsymbol{B} \boldsymbol{r} \) from \( \boldsymbol{N} \boldsymbol{a} \boldsymbol{B} \boldsymbol{r} \)
because it :
A. reacts slowly with \( N a B r \)
B. oxidises \( H B r \)
c. reduces \( H B r \)
D. none of the above
| 1 |
Chemistry
|
How many terms are there in the
sequence \( 3,6,9,12, \ldots, 111 ? \)
| 2 |
Maths
|
The blue zone in a LPG flame indicates
A. unburnt vapours
B. partial decomposition
c. moderately hot
D. hottest and complete combustion
| 1 |
Chemistry
|
Find the sum of the first (i) 75 positive
integers
(ii) 125 natural numbers
| 2 |
Maths
|
Bleaching powder gives smell of chlorine because it:
A . is unstable
B. gives chlorine on exposure to atmosphere
c. is a mixture of chlorine and slaked lime
D. contains excess of chlorine
| 1 |
Chemistry
|
The fissionable material used in a
breeder reactor is
A \( \cdot 92 \mathrm{U}^{235} \)
55
В \( \cdot \) g \( _{9} \mathrm{Pu}^{239} \)
\( \mathrm{c} \cdot_{90} \mathrm{Th}^{234} \)
D. \( c^{12} \)
| 3 |
Physics
|
Sodium cyanide is used in the:
A. cleaning of silver
B. creation of fires
C . purification of acids
D. extraction of gold
| 1 |
Chemistry
|
Thermoplastics are:
A. linear polymers.
B. soften or melt on heating
C. molten polymer can be moulded in desired shape.
D. All of these
| 1 |
Chemistry
|
\( f(x)=\cos ^{-1}\left(\frac{\sqrt{2 x^{2}+1}}{x^{2}+1}\right), \) then
range of \( \boldsymbol{f}(\boldsymbol{x}) \) is
\( \mathbf{A} \cdot[0, \pi] \)
B \cdot \( \left(0, \frac{\pi}{4}\right. \)
\( c \cdot\left(0, \frac{\pi}{3}\right. \)
D \( \cdot\left[0, \frac{\pi}{2}\right) \)
| 2 |
Maths
|
Describe the steps involved in
glycolysis (flow chart or explanation).
| 0 |
Biology
|
A gas has an average speed of \( 10 m / s \)
and a collision frequency of \( 10 s^{-1} \)
What is its mean free path?
A. \( 1 m \)
в. \( 2 m \)
\( c .3 m \)
D. \( 0.1 m \)
| 3 |
Physics
|
Two particles A and B perform SHM along the same straight line with the same amplitude 'a', same frequency 'f and same equilibrium position '0'. The greatest distance between them is found to be \( 3 a / 2 \). at some instant of
time they have the same displacement from mean position. What is this displacement?
A \( \cdot \frac{a}{\sqrt{2}} \)
B. \( a \sqrt{7} / 4 \)
c. \( \sqrt{7} a / 4 \)
D. 3a/4
| 3 |
Physics
|
In a potentiometer experiment, it is found that no current passes through the galvanometer when the terminals of
the cell are connected across \( 52 \mathrm{cm} \) of
the potentiometer wire. If the cell is shunted by a resistance of \( 5 \Omega, \) a balance is found when the cell is
connected across \( 40 \mathrm{cm} \) of the wire. Find
the internal resistance of the cell.
A . \( 1.5 \Omega \)
B . 2\Omega
\( c .2 .5 \Omega \)
D. 12
| 3 |
Physics
|
Why bacteria and fungi are called decomposers?
| 0 |
Biology
|
In a step-down transformer the
secondary coil has number of
turns
A. strength
B. less
c. alternating
D. primary
| 3 |
Physics
|
How long does it stay in the air (in s)?
A . 37
в. 37.1
\( c .36 \)
D. 35 5
| 3 |
Physics
|
D is any point on AC in \( A B C . \) Now,
\( \boldsymbol{P}, \boldsymbol{Q}, \boldsymbol{X}, \boldsymbol{Y} \) are the mid points of \( \mathbf{A B}, \mathbf{B C} \)
AD and DC respectively. Show that \( P X= \)
\( \mathrm{QY} \)
| 2 |
Maths
|
The displacement x of a particle moving in one dimension under the action of a
constant force is related to time t by the
equation \( t=\sqrt{x}+3, \) where \( x \) is in meter and \( t \) is in second. Find the
displacement of the particle when its velocity is zero.
A. zero
в. \( 12 m \)
\( c .6 m \)
D. 18 т
| 3 |
Physics
|
In soils, PAHs are most likely to stick tightly to particles; certain PAHs move through soil to contaminate
underground water
A. True
B. False
| 1 |
Chemistry
|
Find \( f \circ g \) and \( g \circ f, \) if \( f(x)=\sin ^{-1} x \)
\( \boldsymbol{g}(\boldsymbol{x})=\boldsymbol{x}^{2} \)
| 2 |
Maths
|
For \( \boldsymbol{X} \rightarrow \boldsymbol{B}(\boldsymbol{n}, \boldsymbol{p}), \) if \( \boldsymbol{n}=\mathbf{2 5}, \boldsymbol{E}(\boldsymbol{x})=\mathbf{1 0} \)
then \( S . D .(x)= \)
A \( .2 \sqrt{6} \)
B. 2.4
c. \( 2 \sqrt{10} \)
D. \( \sqrt{2.4} \)
| 2 |
Maths
|
Let \( \boldsymbol{f}=\boldsymbol{R} \rightarrow \boldsymbol{R} \) be a continuous
function defined by \( \boldsymbol{f}(\boldsymbol{x})=\frac{\mathbf{1}}{\boldsymbol{e}^{\boldsymbol{x}}+\mathbf{2} \boldsymbol{e}^{-\boldsymbol{x}}} \)
Statement \( 1: f(c)=\frac{1}{3}, \) for some \( c \epsilon R \) Statement \( 2: 0<f(x) \leq \frac{1}{2 \sqrt{2}}, \) for al
\( \boldsymbol{x} \epsilon \boldsymbol{R} \)
| 2 |
Maths
|
Evaluate \( \int(\ln x+1) d x \)
\( \mathbf{A} \cdot x \ln x+c \)
B. \( x^{2} \ln x+c \)
c. \( x^{-2} \ln x+c \)
D. \( -x \ln x+c \)
| 2 |
Maths
|
Assertion: The Nernst equation gives concentration dependence of EMF of the
cell.
Reason: In a Daniell cell current flows
from cathode to anode.
A. Both Assertion and Reason are true and Reason is the correct explanation of Assertion
B. Both Assertion and Reason are true but Reason is not the correct explanation of Assertion
c. Assertion is true but Reason is false
D. Assertion is false but Reason is true
E. Both Assertion and Reason are false
| 1 |
Chemistry
|
Distinguish between step-up and step
down transformer.
| 3 |
Physics
|
Clothes of \( _{--}-_{-}-_{-}-_{-}(\text {dark, white }) \)
colors absorb heat better than clothes
of light colors.
| 3 |
Physics
|
The engulfment of food in amoeba is
known as
A. Excretion
B. Phagocytosis
c. Respiration
D. All of the above
| 0 |
Biology
|
Lanthanoids are:
A. 14 elements in the seventh period left ( atomic no. \( =90 \) to \( 103 \text { right }) \) that are filling \( 5 f \) sublevel
B. 14 elements in the sixth period left ( atomic no. 58 to 71 right ) that are filling \( 4 f \) sublevel
C. 14 elements in the seventh period left ( atomic no. \( =58 \) to \( 71 \text { right }) \) that are filling \( 4 f \) sublevel
D. 14 elements in the sixth period left ( atomic no. 90 to \( 103 \text { right }) \) that are filling \( 4 f \) sublevel
| 1 |
Chemistry
|
What is the product of electrolysis of 45 grams of water?
A. 40 grams of \( H_{2} \) and 45 grams of \( O_{2} \)
B. 40 grams of \( O_{2} \) and 5 grams of \( H_{2} \)
c. 30 grams of \( H_{2} \) and 15 grams \( O_{2} \)
D. 30 grams of \( O_{2} \) and 15 grams of \( H_{2} \)
| 1 |
Chemistry
|
micrometer is \( 10^{-a} \) hectometer. What
is value of a?
| 3 |
Physics
|
Which of the following is not a characteristic of good respiratory
surface?
A. Thin and moist
B. Large surface area
c. close to oxygen and gas transporttt
D. Thick and dry surface
| 0 |
Biology
|
Find the point on the curve \( y=x^{3}- \)
\( 2 x^{2}-x, \) where the tangents are parallel
to \( 3 x-y+1=0 \)
| 2 |
Maths
|
Solve: \( \boldsymbol{x}^{2}-(\boldsymbol{3} \sqrt{\mathbf{2}}-\mathbf{2} \boldsymbol{i}) \boldsymbol{x}-\sqrt{\mathbf{2}} \boldsymbol{i}=\mathbf{0} \)
| 2 |
Maths
|
A broader bundle of light rays is called a
A. Beam of light
B. Ray of light
c. Bundle of light
D. None of these
| 3 |
Physics
|
An artificially created surface water body to recharge ground water is called
as
A. Dam
B. well
c. Percolation tank
D. None of the above
| 0 |
Biology
|
In triangle \( A B C, D \) and \( E \) are mid-points of sides \( A B \) and \( B C \) respectively. Also, \( F \)
is a point in side \( A C \) so that DF is parallel to BC. Prove that DBEF is a parallelogram. Answer: DBEF is a parallelogram, If true then enter 1 else if False enter 0
| 2 |
Maths
|
What is amalgam?
| 1 |
Chemistry
|
Describe Rutherford's atomic model
and also explain its drawbacks.
| 1 |
Chemistry
|
\( \operatorname{Let} n(A)=n . \) Then the number of all
relations on \( \boldsymbol{A} \) is
\( \mathbf{A} \cdot 2^{n} \)
B \( \cdot 2^{(n)} \)
c. \( 2^{n^{2}} \)
D. none
| 2 |
Maths
|
Identify the action involved when a magnet attracts a piece of iron towards
¡t.
A. Pushing
B. Pulling
c. Flying
D. Picking
| 3 |
Physics
|
An aromatic primary amine A with
molecular formula \( C_{6} H_{7} N \) undergoes diazotisation to give B. B when the aqueous solution of \( \mathrm{B} \) is boiled it gives
C. Identify \( A, B \) and \( C \)
| 1 |
Chemistry
|
Chlorine forms stable compounds in the
presence of
A. sunlight
B. water
\( c . \) air
D. catalyst
| 1 |
Chemistry
|
The formula of standard deviation of
a grouped frequency distribution is
A \( \cdot \sqrt{\frac{\sum\left(x_{i}-\bar{x}\right)^{2}}{N}} \)
в. \( \frac{\sum\left(x_{i}-\bar{x}\right)^{2} f i}{N} \)
c. \( \sqrt{\frac{\sum\left(x_{i}-\bar{x}\right)^{2} f i}{N}} \)
D. \( \frac{\left.\sum\left(x_{i}-\bar{x}\right)^{2}\right\} i}{f i} \)
| 2 |
Maths
|
Give reasons:
Xenon does not form fluorides such as
\( X e F_{3} \) and \( X e F_{5} \)
| 1 |
Chemistry
|
Find the potentials of points \( A \) and \( B: \)
A \( \cdot V_{A}=+10 V ; V_{B}=0 V \)
B . \( V_{A}=+7.5 V ; V_{B}=-2.5 V \)
c. \( V_{A}=+2.5 V ; V_{B}=-7.5 V \)
D. \( V_{A}=+0 V ; V_{B}=-10 V \)
| 3 |
Physics
|
Which one of the following disease is caused by Nosema bombycis in mulberry silkworm?
A. Muscardine
B. Pebrine
c. Grasserie
D. Flacherie
| 1 |
Chemistry
|
When you use a hair straightener, while straightening your hairs, it breaks down your hairs due to:
A. Electrostatic bonds
B. Hydrogen bonds
c. lonic bonds
D. Covalent bonds
| 1 |
Chemistry
|
Which of the following compounds is not coloured?
A \( \cdot N a_{2}\left[C u C l_{4}\right] \)
B . \( N a_{2}\left[C d C l_{2}\right] \)
\( \mathbf{c} \cdot\left[\operatorname{Cr}\left(H_{2} O\right)_{6}\right] C l_{3} \)
D. all of the above
| 1 |
Chemistry
|
The element with \( Z=120 \) (not yet discovered) will be an/ a:
A. transition metal
B. inner-transition metal
c. alkaline earth metal
D. alkali metal
| 1 |
Chemistry
|
Match list (I) with List (II)
List I List II
a) Recoil of gun e) Newtons
first law
f) Newtons
second law b) Acceleration in one dimension
and motion in two dimensions g)
Projectile
motion c) Definition of force
d) Measurement of force
\( \mathbf{A} \cdot a \rightarrow e, b \rightarrow g, c \rightarrow h, d \rightarrow f \)
В . \( a \rightarrow h, b \rightarrow g, c \rightarrow e, d \rightarrow f \)
c. \( a \rightarrow e, b \rightarrow h, c \rightarrow g, d \rightarrow f \)
D \( . a \rightarrow h, b \rightarrow e, c \rightarrow g, d \rightarrow f \)
| 3 |
Physics
|
If the color code of the carbon
resistance is Red, Orange yellow, Gold. Find the value of resistance.
| 3 |
Physics
|
Water insoluble component of starch is:
A. amylopectin
B. amylose
c. cellulose
D. none of these
| 1 |
Chemistry
|
If \( \sin \left(\sin ^{-1} \frac{1}{5}+\cos ^{-1} x\right)=1, \) then \( x \) is
equal to
A .
B. 0
\( c \cdot \frac{4}{5} \)
D.
| 2 |
Maths
|
Show that Newton's third law of motion
is contained in his second law.
State and explain the principle of conservation of angular momentum
| 3 |
Physics
|
Time taken by a 836 Wheater to heat
one litre of water from \( 10^{\circ} \mathrm{C} \) to \( 40^{\circ} \mathrm{C} \) is:
A. 50 s
B. 100 s
\( c \cdot 150 s \)
D. 200
| 3 |
Physics
|
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