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Barometer can be used to forecast the weather by checking pressure fluctuations. Type 1 for true and 0 for false
3
Physics
In \( \triangle A B C, A C^{2}=A B^{2}+B C^{2}, \) then right angle is at
2
Maths
Conjugate base of a strong acid is: A. a weak base B. a strong base c. neutral D. a weak acid
1
Chemistry
If radius of a sphere is doubled, how many times its volume will be affected A. 2 times B. 4 times \( c .6 \) times D. 8 times
2
Maths
Give the structural formula of the following. 1-Propanal
1
Chemistry
Which one of the following would not be limiting factor in photosynthesis? \( A \cdot O_{2} \) в. \( C O_{2} \) c. chlorophyll D. Light
0
Biology
How do ultraviolet rays coming from sun affect the living organisms?
0
Biology
Solve the following systems of equations: \( \frac{1}{2 x}+\frac{1}{3 y}=2 \) \( \frac{1}{3 x}+\frac{1}{2 y}=\frac{13}{6} \)
2
Maths
speed of \( 340 \mathrm{m} \mathrm{s}^{-1} \). The wavelength of the wave is : \( \mathbf{A} \cdot 1.5 \times 10^{5} m \) B. 0.77 \( m \) \( \mathbf{c} .1 .4 \mathrm{m} \) D. 1.1
3
Physics
If the glancing angle of incidence is \( 30^{\circ} \) what will be the angle of incidence? A . \( 30^{\circ} \) B. \( 60^{\circ} \) \( \mathrm{c} \cdot 90^{\circ} \) D. \( 150^{\circ} \)
3
Physics
541 negligible resistance and radius \( a \). It is hinged at the center of the ring and rotated about this point in clockwise direction with a uniform angular velocity \( \omega . \) There is a uniform magnetic field of strength \( B \) pointing inward and \( r \) is a stationary resistance. Then This question has multiple correct options A. current through \( r \) is zero B. current through \( r \) is \( \left(2 B \omega a^{2}\right) / 5 r \) c. direction of current in external resistance \( r \) is from center to circumference D. direction of current in external resistance \( r \) is from circumference to center E. answer required
3
Physics
A pump is used to pump a liquid of density \( \rho^{\prime} \) continuously through a pipe of cross section area \( A \). If liquid is flowing with speed \( V \), then power of pump is: A \( \cdot \frac{1}{3} \rho A V^{2} \) B. \( \frac{1}{2} \rho A V^{2} \) с. \( 2 \rho A V^{2} \) D \( \cdot \frac{1}{2} \rho A V^{3} \)
3
Physics
\( \operatorname{Let} f(x)=\left\{\begin{array}{cc}x^{2} & x<1 \\ x & 1<x<4, \text { then } \\ 4-x & x>4\end{array}\right. \) This question has multiple correct options A \( \cdot \lim _{x \rightarrow 1^{-}} f(x)=1 \) B. \( \lim _{x \rightarrow 1^{+}} f(x)=1 \) \( \mathbf{c} \cdot \lim _{x \rightarrow 4^{-}} f(x)=4 \) D. \( \lim _{x \rightarrow+4^{+}} f(x)=4 \)
2
Maths
A fair coin and an unbiased die are tossed. Let \( A \) be the event 'head appears on the coin' and \( B \) be the event '3 on the die'. Check whether \( A \) and \( B \) are independent events or not. A. True B. False
2
Maths
Give two examples of water soluble vitamins.
1
Chemistry
Diaphragms are used by A. Male B. Females c. Both A and B D. None of the above
0
Biology
Bleaching powder is not used: A. as a disinfectent B. as a reducing agent C . for bleaching purpose D. for manufacturing chloroform
1
Chemistry
In the Ostwald's process for the manufacture of \( \boldsymbol{H} \boldsymbol{N} \boldsymbol{O}_{3}, \) the catalyst used is: A . \( F e \) в. \( P t \) \( c \cdot V_{2} O_{5} \) D. \( M o \)
1
Chemistry
Solve the following pairs of equations, graphically: \( 2 x-3 y=-6 \) and \( x-\frac{y}{2}=1 \) \( \mathbf{A} \cdot(3,2) \) в. (3,3) c. (4,4) D. (3,4)
2
Maths
Identify the metal \( M \) A. Calcium B. Sodium \( c . \) zinc D. Iron
1
Chemistry
\( \left|\begin{array}{ccc}x^{2}+x & x+1 & x+2 \\ x^{2}+3 x-1 & 3 x & 3 x-3 \\ x^{2}+2 x+3 & 2 x-1 & 2 x-1\end{array}\right|= \) \( A x+B \) where \( A \) and \( B \) are determinants of order \( 3 . \) Then \( A+2 B \) is equal to
2
Maths
Which of the following does not produce \( \mathrm{H}_{2} \) at the anode on electrolysing using Pt electrode? This question has multiple correct options A . molten CaH \( _{2} \) B. \( N a C l(a q) \) \( c \cdot \operatorname{cus} 0_{4}(a q) \) D. \( \operatorname{dil} \mathrm{H}_{2} \mathrm{SO}_{4} \)
1
Chemistry
In spectrum obtained with prism which color is deviated maximum? A . Violet B. Redd c. Green D. orange
3
Physics
Assertion In adiabatic process work is independent of path. Reason In adiabatic process work done is equal to negative of change in internal energy. 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
Let \( f(x) \) be a function satisfying \( f^{\prime}(x)=f(x)=e^{x} \) with \( f(0)=1 \) and \( g(x) \) be a function that satisfies \( f(x)+ \) \( g(x)=x^{2} . \) Then, the value of the integral \( \int_{0}^{1} f(x) g(x) d x \) is \( ^{A} \cdot_{e}+\frac{e^{2}}{2}-\frac{3}{2} \) B. \( _{e}-\frac{e^{2}}{2}-\frac{3}{2} \) c. \( _{e}+\frac{e^{2}}{2}+\frac{5}{2} \) D. \( _{e}-\frac{e^{2}}{2}-\frac{5}{2} \)
2
Maths
\( L, C \) and \( R \) represents the physical quantities, inductance, capacitance and resistance respectively. The combinations which have the dimensions of frequency are: A. \( 1 / R C \) в. \( R C / L \) c. \( 1 / \sqrt{L R C} \) D. \( C / L \)
3
Physics
If \( (x+3,4-y)=(1,7), \) then \( (x- \) \( \mathbf{3}, \mathbf{4}+\boldsymbol{y}) \) is equal to A \( \cdot(-2,-3) \) в. (-5,1) c. (3,4) (年. \( (3,4)) \) D. None of these
2
Maths
The Venn diagram shows the sets \( \boldsymbol{\xi}, \boldsymbol{P}, \boldsymbol{Q} \) and \( \boldsymbol{R} \). Which of the following is not true? \( \mathbf{A} \cdot P \cap Q \neq \phi \) в. \( R \subset Q \) \( \mathbf{c} \cdot(P \cap R) \subset Q \) D. \( (P \cap Q)=R \)
2
Maths
Write the units digit of the cube of 833 \( A \cdot 3 \) B. 7 \( c .1 \) D.
2
Maths
There is a transition from \( n=1 \) to \( n=2 \) and then \( n=2 \) to \( n=3, \) then: A. \( \Delta E \) values as well as frequency are additive B. wave length as well as frequency are additive c. \( \Delta E \) values as well as wavelength are additive D. all of the parameters, \( (\Delta E, \) frequency and wave length are additive
1
Chemistry
Evolution of man took place in A. Central Africa B. Central Asia c. Australia D. America
0
Biology
Evaluate: \( \int \sec x \tan x d x \)
2
Maths
What is \( \Delta_{r} G(k J / \text { mole }) \) for synthesis of ammonia at \( 298 \mathrm{K} \) at following sets of partial pressure : \( N_{2}(g)+3 H_{2}(g) \rightleftharpoons \) \( \mathbf{2} N \boldsymbol{H}_{3}(\boldsymbol{g}) ; \boldsymbol{\Delta}_{r} \boldsymbol{G}^{\circ}=-\mathbf{3 3} \boldsymbol{k} \boldsymbol{J} / \boldsymbol{m o l} \) \( [\text { Take } \boldsymbol{R}=\mathbf{8 . 3} \boldsymbol{J} / \boldsymbol{K} \text { mole, } \log \mathbf{2}= \) \( \mathbf{0 . 3} ; \log \mathbf{3}=\mathbf{0 . 4 8} \) Gas \( \quad: N_{2} \quad H_{2} \quad N H_{3} \) Pressure (atm) : 1 3 A \( .+6.5 \) B . -6.5 c. +60.5 D. - 60.5
1
Chemistry
The half-life period of an 1st order reaction is 60 minutes. What percentage will be left over after 240 minutes? \( \mathbf{A} \cdot 6.25 \% \) B. \( 4.25 \% \) c. \( 5 \% \) D. \( 6 \% \)
1
Chemistry
A point source of light, \( \mathrm{S} \) is placed at a distance \( L \) in front of the centre of plane mirror of width d which is hanging vertically on a wall. A man walks in front of the mirror along a line parallel to the mirror, at a distance \( 2 L \) as shown below. The distance over which the man can see the image of the light source in the mirror is : A . \( 3 d \) B. \( \frac{d}{2} \) \( c \cdot d \) D. \( 2 d \)
3
Physics
The M.I of a thin rod of length \( l \) about the perpendicular axis trough its center is \( I_{0} . \) The M.I of the square structure made by four such rods about a perpendicular axis to the the plane and through the center will be :- A \( .4 I_{0} \) в. \( \frac{8}{3} I_{0} \) c. \( \frac{4}{3} I_{0} \) D. \( 6 I_{0} \)
3
Physics
Identify the odd one out: Barium, Radium, Calcium, Francium
1
Chemistry
What is myopia? How does it occur? How can it be corrected? Explain with figure.
3
Physics
Define Electromagnetism A. The study of attraction or repulsion between two magnets is called electromagnetism B. The study of electric effects due to magnetic interaction is called electromagnetism C. The study of magnetic effects produced due to electric current is called electromagnetism D. The study of magnetic effects produced due to electric charge is called electromagnetism
3
Physics
toppr Q Type your question graph correctly shows the momentum of the blue object in each case. The red graphs are all different. Which graph best represents the possible momentum of the red object before, during, and after the collision? \( A \) \( B \) \( c \) \( D \) E
3
Physics
If a cathode ray tube has a potentia difference \( V \) volt between the cathode and anode, then the speed \( v \) of cathode rays is given by: A \( \cdot v \propto V^{2} \) В. \( v \propto \sqrt{V} \) \( ^{\mathrm{c}} \cdot_{v} \propto \frac{1}{V} \) D. \( v \propto V \)
3
Physics
\( \frac{\pi}{4} \)
1
Chemistry
Find the eccentricity of an ellipse, if its latus rectum be equal to one half its minor axis.
2
Maths
\( N a_{2} S O_{3} \cdot x H_{2} O \) has \( 50 \% H_{2} O \) by mass. Hence, \( x \) is: A .4 B . 45 \( c \cdot 6 \) D.
1
Chemistry
How is a pinnately compound leaf different from a palmately compound leaf?
0
Biology
Hydrogen peroxide is obtained by the electrolysis of A. water B. sulpharic acid c. hydrochoric acid D. fused sodium
1
Chemistry
If the area of the region bounded by the curves, \( \boldsymbol{y}=\boldsymbol{x}^{2}, \boldsymbol{y}=\frac{\mathbf{1}}{\boldsymbol{x}} \) and the lines \( \boldsymbol{y}=\mathbf{0} \) and \( \boldsymbol{x}=\boldsymbol{t}(\boldsymbol{t}>\mathbf{1}) \) is \( \mathbf{1} \) sq. unit then \( t \) is equal to? A \( \cdot \frac{4}{3} \) В. \( e^{2 / 3} \) \( c \cdot \frac{3}{2} \) \( \mathbf{D} \cdot e^{3 / 2} \)
2
Maths
If \( (5+2 \sqrt{6})^{n}=m+f \), where \( n \) and \( m \) are positive integers and \( 0 \leq f<1 \) then \( \frac{1}{1-f}-f \) is equal to A \( \cdot \frac{1}{m} \) в. \( m \) c. \( _{m+\frac{1}{m}} \) D. \( _{m-} \frac{1}{m} \)
2
Maths
In simple distillation of liquids, it involves simultaneously. A. Vaporisation and condensation B. Heating and sublimation c. vaporisation and sublimation D. Boiling and filtration
1
Chemistry
Two charges \( 4 \mu C \) and \( 36 \mu C \) are placed \( 60 \mathrm{cm} \) apart. At what distance from the larger charge is the electric field intensity is zero?
3
Physics
Describe with the help of a diagram an instrument which can be used to detect a charged body.
3
Physics
Name the macromolecules that are chosen as drug targets.
1
Chemistry
Consider a p-njunction as a capacitor, formed with \( p \) and \( n \) material acting as thin metal electrodes and depletion layer width acting as separation between them. Based on this, assume that an n-p-n transistor is working as a amplifier in CE configuration. If \( C_{1} \) and \( C_{2} \) be base- emitter and collector-emitter junction capacitances, then A \( \cdot C_{1}>C_{2} \) B. \( C_{1}<C_{2} \) \( \mathbf{c} \cdot C_{1}=C_{2} \) \( \mathbf{D} \cdot C_{1}=C_{2}=0 \)
3
Physics
If different values of variable \( x \) are \( 9.8,5.4,3.7,1.7,1.8,2.6,2.8,8.6,10.5 a r \) find the mean. A . 5.8 B. 7.8 \( \mathrm{c} .9 .8 \) D. None of these
2
Maths
The initial speed with which water flows out from the orifice in \( \mathrm{ms}^{-1} \) is \( \mathrm{g} \) \( \left.=10 \mathrm{ms}^{-2}\right) \) A . 10 B. 5 \( c \cdot 5 \cdot \sqrt{2} \) D. \( 10 . \sqrt{2} \)
3
Physics
The multiple bonds that nitrogen forms with itself are: \( \mathbf{A} \cdot d \pi-d \pi \) bonds В. \( d \pi-p \pi \) bonds C. \( p \pi-p \pi \) bonds D. none of the above
1
Chemistry
Sketch for \( \boldsymbol{y}=\cos ^{-1}\left(\frac{1-x^{2}}{1+x^{2}}\right) \)
2
Maths
If \( E_{1}, E_{2} \) and \( E_{3} \) are the respective kinetic energies of an electron, an alpha particle and a proton each having the same de Brogli wavelength then A. \( E_{1}>E_{3}>E_{2} \) B . \( E_{2}>E_{3}>E_{1} \) c. \( E_{1}>E_{2}>E_{3} \) D. \( E_{1}=E_{2}=E_{3} \)
3
Physics
Quiescent centre is found on A. Root tip B. Shoot tip C. Floral tip D. Leaf tip
0
Biology
In onion root tip during mitotic metaphase, the number of kinetochores is \( A \cdot 4 \) B. 64 \( c \cdot 32 \) D. 16
0
Biology
The energy of thermal neutrons is nearly A \( .0 .25 \mathrm{eV} \) B. \( 0.025 \mathrm{eV} \) c. \( 200 \mathrm{MeV} \) D. 0.025 Joule
3
Physics
State whether true or false: When light falls on a prism the result can be magnification. A. True B. False
3
Physics
Match the following with reference to Taenia solium. List-I List-II (A) Mehlis (I) Tegument formation glands (B) Vitelline (II) Osmoregulation and gland excretion \( (C) \) (III) Lubricate passage of Mesenchymal capsules into uterus cel (D) Flame (IV) Secretion of embryophore cells (V) Capsule formation around zygote \( A \cdot A-(111), B-(V), C-(11), D-(1 V) \) B. \( A-(V), B-(1), C-(11), D-(I V) \) C \( \cdot A-(\mid V), B-(|I|), C-(1), D-(\mid I) \) D. \( A-(111), B-(V), C-(1), D-(11) \)
0
Biology
\( H_{2} S \) a toxic gas with rotten egg like smell is used for the qualitative analysis. If the solubility of \( H_{2} S \) in water at STP is \( 0.195 m \), calculate Henry's law constant.
1
Chemistry
Find the mode of the following distribution \begin{tabular}{llllll} Daily & \( 31- \) & \( 37- \) & \( 43- \) & \( 49- \) & 55 \\ Wages & 36 & 42 & 48 & 54 & 6 \\ No. of workers & 6 & 12 & 20 & 15 & 9 \\ \hline \end{tabular} \( \mathbf{A} \cdot 48.5 \) B. 47.5 c. 46.2 D. 48.3
2
Maths
Read the following information and answer the three items that follow: Let \( \boldsymbol{f}(\boldsymbol{x})=\boldsymbol{x}^{2}+\boldsymbol{2} \boldsymbol{x}-\boldsymbol{5} \) and \( \boldsymbol{g}(\boldsymbol{x})= \) \( 5 x+30 \) What are the roots of the equation \( \boldsymbol{g}[\boldsymbol{f}(\boldsymbol{x})]=\mathbf{0} ? \) A . 1,-1 B. -1,-1 \( c .1,1 \) D. 0,1
2
Maths
Solve by factorization \( \sqrt{\mathbf{3}} \boldsymbol{x}^{2}+\mathbf{1 1} \boldsymbol{x}+ \) \( \mathbf{6} \sqrt{\mathbf{3}}=\mathbf{0} \)
2
Maths
Gurpreet bought a cycle for Rs. \( \mathbf{7 5 0 . 0 0} \) The transport charges were Rs. 10. If he sold the cycle for Rs. 798 , find his gain or loss.
2
Maths
\( \boldsymbol{A}=\left[\begin{array}{ccc}\mathbf{1} & \mathbf{2} & \mathbf{3} \\ \mathbf{1} & \mathbf{2} & \mathbf{3} \\ \mathbf{- 1} & \mathbf{- 2} & \mathbf{- 3}\end{array}\right], \) then A is a nilpotent matrix of index \( A \) B. 3 \( c \cdot 4 \) D. 5
2
Maths
By which smallest number must the following numbers be divided so that the quotient is a perfect cube? \( \mathbf{3 5 7 2 1} \)
2
Maths
If Leah is 6 years older than Sue and John is 5 years older than Leah and the total of their ages is \( 41 . \) Then how old is Sue? A . 8 B. 10 c. 14 D. 19 E . 21
2
Maths
Evaluate the following integral \( \int \frac{1}{x(3+\log x)} d x \)
2
Maths
Compound X has the molecular formula \( \boldsymbol{C}_{3} \boldsymbol{H}_{\boldsymbol{6}} \boldsymbol{O}_{3} \) Heating X under reflux with acidified \( K_{2} C r_{2} O_{7} \) forms \( H O_{2} C C O C O_{2} H \) Reacting \( X \) with \( N a B H_{4} \) forms \( \boldsymbol{H} \boldsymbol{O} \boldsymbol{C} \boldsymbol{H}_{2} \boldsymbol{C} \boldsymbol{H}(\boldsymbol{O} \boldsymbol{H}) \boldsymbol{C} \boldsymbol{H}_{2} \boldsymbol{O} \boldsymbol{H} \) What is a possible structural formula for \( X ? \) 1. \( \boldsymbol{H} \boldsymbol{O} \boldsymbol{C} \boldsymbol{H}_{2} \boldsymbol{C} \boldsymbol{H}_{2} \boldsymbol{C} \boldsymbol{O}_{2} \boldsymbol{H} \) 2. \( \boldsymbol{H} \boldsymbol{O} \boldsymbol{C} \boldsymbol{H}_{2} \boldsymbol{C H}(\boldsymbol{O} \boldsymbol{H}) \boldsymbol{C H O} \) 3. \( \boldsymbol{H} \boldsymbol{O} \boldsymbol{C} \boldsymbol{H}_{2} \boldsymbol{C O C H}_{2} \boldsymbol{O H} \) A. 1,2 and 3 are correct B. 1 and 2 only are correct c. 2 and 3 only are correct D. 1 only is correct
1
Chemistry
Draw a labeled ray diagram of a refracting telescope. Define its magnifying power and write the expression for it. Write two important limitation of a refracting telescope over a reflecting type telescope
3
Physics
A cell of emf \( \boldsymbol{E} \) Volt with no internal resistance is connected to a wire whose cross section changes. The wire has three sections of equal length. The middle section has a radius \( a \), whereas the radius of the outer two sections is 2a. The ratio of the potential difference across section \( A B \) to the potential difference across section \( C A \) is : \( A \) B. 4 \( c \cdot \frac{1}{2} \) D.
3
Physics
For n moles of gas Vander waal's equation is \( \left(\boldsymbol{P}-\frac{\boldsymbol{a}}{\boldsymbol{V}^{2}}\right)(\boldsymbol{V}-\boldsymbol{b})=\boldsymbol{n} \boldsymbol{R} \boldsymbol{T} \) Find the dimensions of a and b, where \( \mathrm{P} \) is gas pressure, \( V= \) volume of gas \( T= \) temperature of gas
3
Physics
The system that forms maximum boiling azeotrope is : A. acetone-chloroform B. ethanol- acetone C. n-hexane- n- heptane D. carbon disulphide - acetone
1
Chemistry
If a conducting rod \( A B \) placed in a uniform magnetic field pointing in positive z-direction (as shown in figure), moves parallel to y-axis, then end \( A \) of the rod will be A. Neutral B. Positively charged c. Negatively charged D. None of these
3
Physics
In a class \( 25 \% \) of the total students are absent. If 45 students are presents, then what is the total strength of the class.
2
Maths
Number of bonding electrons and anti- bonding electrons in \( 2 p \) MO of \( N_{2} \) molecule are respectively: A .6,2 в. 4,0 c. 6,0 D. 4,2
1
Chemistry
Write chemical equation to represent the most probable outcome in the following reaction and choose the correct option. \[ \boldsymbol{C d C O}_{3} \stackrel{\boldsymbol{\Delta}}{\rightarrow} \] A \( \cdot \mathrm{CdCO}_{3} \stackrel{\Delta}{\longrightarrow} \mathrm{Cd} \mathrm{O}+\mathrm{CO}_{2} \) в. \( 2 \mathrm{CdCO}_{3} \) 오 \( 2 \mathrm{CdO}+2 \mathrm{CO}+\mathrm{O}_{2} \) c. No reaction D. None of these
1
Chemistry
Consider the following steps \( C u S \stackrel{\text {roastin air}}{\rightarrow} \) \( (A) \) \( \stackrel{\text {roast without ai}}{\rightarrow} \) Which of the one is not the correct statement? A. It is self-reduction B. It involves disproportionation \( C u_{2} S \rightarrow C u+C u S \) \( c \cdot(A) \) is a mixture of \( C u_{2} \) Oand \( C u \) and (B) is a mixture of \( C u \) and \( S O_{2} \) D. All are incorrect statement
1
Chemistry
One of the reaction that takes place in producing steel from iron ore is the reduction of iron(ll) oxide by carbon monoxide to give iron metal and \( C O_{2} \) \( \boldsymbol{F e O}(\boldsymbol{s})+\boldsymbol{C O}(\boldsymbol{g}) \rightleftharpoons \boldsymbol{F} \boldsymbol{e}(\boldsymbol{s})+\boldsymbol{C O}_{2}(\boldsymbol{g}) \) \( \boldsymbol{K}_{\boldsymbol{P}}=\mathbf{0 . 2 6 5} \) at \( \boldsymbol{m} \) at \( \mathbf{1 0 5 0} \boldsymbol{K} . \) What are the equilibrium partial pressures of \( \mathrm{CO} \) and \( C O_{2} \) respectively at \( 1050 \mathrm{K} \) if the initial partial pressures are: \( \boldsymbol{p}_{c o}= \) 1.4 atm and \( p_{c o_{2}}=0.80 \) atm? A \( \left.\cdot\left[P_{C O}\right]=1.739 \text { at } m \text { and } P_{C O_{2}}\right]=0.461 \) at B . \( \left[P_{C O}\right]=17.39 a t m \) and \( P_{C O_{2}}=0.461 a t m \) C \( \left.\cdot\left[P_{C O}\right]=1.79 \text { at } m \text { and } P_{C O_{2}}\right]=0.46 \) at \( m \) D . \( \left.\left[P_{C O}\right]=2.739 \text { at } m \text { and } P_{C O_{2}}\right]=1.461 \) at
1
Chemistry
What is van't Hoff factor of aqueous phosphate solution? (assume \( 100 \% \) ionise).
1
Chemistry
\( \int \frac{1}{x-2} d x \)
2
Maths
Find the radius of nucleus of an atom having atomic mass number equal to 125. \( \left(\text { Take } \boldsymbol{R}_{0}=\mathbf{1 . 3} \times \mathbf{1 0}^{-\mathbf{1 5}} \boldsymbol{m}\right) \)
1
Chemistry
Match the column.
1
Chemistry
The sugar and purine rings are connected at which carbons? A . 1,3 в. 1,6 \( \mathrm{c} .1,9 \) D. 5,9
1
Chemistry
A Ge specimen is doped with \( A l \). The concentration of acceptor atoms is \( \sim \) \( 10^{21} \) atoms \( / m^{3} . \) Given that the intrinsic concentration of electron-hole pairs is \( \sim 10^{19} / m^{3}, \) the concentration of electrons in the specimen is \( \mathbf{A} \cdot 10^{17} / m^{3} \) B . \( 10^{15} / m^{3} \) c. \( 10^{4} / m^{3} \) D. \( 10^{2} / m^{3} \)
3
Physics
Which of the following statement is incorrect? A. Average temperature decreases progressively form plains to the mountain tops B. Average temperature decreases progressively form the equator towards the poles c. Temperature affects the kinetic of enzymes and through it the basal metabolism of organism D. None of these
0
Biology
Two particle \( P \) and \( Q \) are executing simple harmonic motion with equal amplitude and frequency. At a distance of half the amplitude one of them is moving away from the mean position while the other is observed at a distance half the amplitude to be moving towards mean position as shown in figure. The phase difference between them is: \( A \cdot \frac{\pi}{2} \) в. \( \frac{\pi}{3} \) c. \( \frac{4 \pi}{3} \) D. \( \frac{\pi}{6} \)
3
Physics
Water turns anhydrous copper sulphate solution in the carbon-hydrogen detection experiment: A. brown B. red c. blue D. green
1
Chemistry
A coin is tossed three times, where (i) \( E: \) head on third toss, \( F: \) heads on first two tosses (ii) \( E: \) at least two heads, \( F: \) at most two heads (iii) \( E: \) at most two tails, \( F: \) at least one tail.
2
Maths
Write the IUPAC Name of the following structure \[ \begin{array}{rl} \mathbf{C H}_{3}-\underset{\mathbf{U}}{\mathbf{O}} \mathbf{H}-\mathbf{C} \mathbf{H}-\mathbf{C} \mathbf{H}-\mathbf{C} \mathbf{H}_{3} \\ \mathbf{O} \mathbf{H} & \mathbf{O} \mathbf{H} \end{array} \]
1
Chemistry
In a beaker containing colloidal solution of sodium thiosulphate and a drop of con. sulphuric acid, light observed from side of beaker is: A. Blue B. Red c. Green D. Yellow
3
Physics
Which of the following statements are not true? This question has multiple correct options A. All charges at rest tend to move higher electric potential to lower electric potential B. All charges at rest tend to move lower electric potential to higher electric potential C. Positive charges at rest tend to move form lower electric potential to higher electric potential and negative charges at rest tend to move from higher electric potential to lower electric potential D. Positive charges at rest tend to move from higher potential to lower potential and negative charges at rest tend to move from lower electric potential to higher potential
3
Physics
In YDSE, let \( A \) and \( B \) be two slits. Films of thicknesses \( t_{A} \) and \( t_{B} \) and refractive indices \( \mu_{A} \) and \( \mu_{B} \) are placed in front of \( A \) and \( B, \) respectively. If \( \mu_{A} t_{A}=\mu_{B} t_{B} \) then the central maxima will : A. Not shift B. Shift toward \( A \) c. shift toward \( B \) D. (b) if \( t_{B}>t_{A} \) and (c) if \( t_{B}<t_{A} \)
3
Physics
How are dots arranged in cells of Braille system? A. Arranged in cells of two vertical rows of three dots each B. Arranged in cells of three vertical rows of three dots each c. Arranged in cells of two vertical rows of two dots each D. Arranged in four vertical rows of two dots each
3
Physics
At \( 283 \mathrm{K} \) a saturated solution of solid \( \mathrm{X} \) can be prepared by dissolving 21.0 g of it in 100 g of water. The maximum amount of \( X \) which can be dissolved in 100 g of water at \( 313 \mathrm{K} \) is \( 62.0 \mathrm{g} \). An attempt is made to dissolve 50.0 g of \( X \) in 100 g of water at \( 313 \mathrm{K} \) . All the 50.0 g of \( X \) will dissolve at 313 K. 2. At \( 313 \mathrm{K} 29.0 \mathrm{g} \) of \( \mathrm{X} \) will remain undissolved. 3. Solubility of X decreases with an increase in temperature. 4. On cooling the solution of \( X \) from 313 \( \mathrm{K} \) to \( 283 \mathrm{K} \) more than \( 21.0 \mathrm{g} \) of \( \mathrm{X} \) will crystallize out. Which of the following statement are correct? A \( . \) and 2 B. 1 and 4 \( c \cdot 2 \) and 3 D. 1,3 and 4
1
Chemistry
Maize, Sugarcane and some other tropical plants have high efficiency of \( C O_{2} \) fixation because they operate A. Calvin cycle B. Hatch-Slack cycle c. TcA cycle D. PP pathway
0
Biology