258 + Interview Questions in JEE-ADVANCED IN GENERAL AWARENESS Page 1 InterviewSolution

1.	Geometrical shapes of the complex formed by the reaction of `Ni^(2+)` with `Cl^(Θ),CN^(Θ)` and `H_(2)O` are :A. octahedral, tetrahedral and square planarB. tetrahedral, square planar and octahedralC. square planar, tetrahedral and octahedralD. octahedral, square planar ans octahedral
Answer» Correct Answer - B

Discussion

2.	The shapes of `XeO_(2)F_(2)` molecule isA. trigonal bipyramidalB. square planarC. tetrahedralD. see-saw
Answer» Correct Answer - D

Discussion

3.	The reaction of white phosphorus with aqueous `NaOH` gives phosphine along with another phosphorus containing compound. The reacation type, the oxidation states of phosphorus in phosphine and the other product are respectvely:A. redox reaction, -3 and -5B. redox reaction , +3 and +5C. disproportionation reactin , -3 and +5D. disproportionation reaction , -3 and +3
Answer» Correct Answer - A

Discussion

4.	The electrochemical cell shown below is a concentration cell `M//M^(2+)` (saturated solution of a sparingly soluble salt, `MX_(2))\|\|M^(2+)(0.001 mol dm^(-3))\|M` The emf of the cell depends on the difference in concentrations of `Mn^(2+)` ions at the two electrodes. The emf of the cell at `298 K` is `0.059 V`. The value of `DeltaG ( kJ "mol"^(-1))` for the given cell is : (take `1 F = 96500 C "mol"^(-1)`)A. `-5.7`B. 5.7C. 11.4D. `-11.4`
Answer» Correct Answer - D

Discussion

5.	Amongst the given option, the compound(s) in which all the atoms are in one plane in all the possible conformations (if any), is/areA. B. C. `H_(2)C=C=O`D. `H_(2)C=C=CH_(2)`
Answer» Correct Answer - B::C

Discussion

6.	The total number of basic groups in the following form of lysine is
Answer» Correct Answer - B

Discussion

7.	Amongst the following, the number of compounds soluble in aqueous `NaOH` is `? ,
Answer» Correct Answer - D

Discussion

8.	A compound `H_(2)X` with molar mass of `80 g` is dissolved in a solvent having density of `0.4 g mL^(-1)`. Assuming no change in volume upon dissolution, the molality of a `3.2` molar solution is
Answer» Correct Answer - 8

Discussion

9.	A uniform circular disc of mass 1.5 kg and raius 0.5 m is initially ar rest on a horiozntal frictonless surface. Three forces of equal matgnitude F = 0.5 N are applied simultaneously along the three sides of an equilateral triangle XYZ with its vertices on the perimeter of the disc (see figure). One second after applying the forces the angular speed of the disc in `rad s^(-1)` is
Answer» Correct Answer - 2

Discussion

10.	A solution of a metal ion when treated with `KI` gives a red precipitate which dissolves in excess `KI` to give a colourless solution. Moreover, the solution of metal ion on treatment with a solution of cobalt (II) thiocyanate gives rise to a deep blue crystalline precipitate. The metal ion isA. `Pb ^( 2 + )`B. `Hg^(2+ ) `C. `Cu^(2+ ) `D. `Co ^( 2+ )`
Answer» Correct Answer - B

Discussion

11.	\(\lim _{x\to 0+}\left(\frac{\cot^{-1} \left(\ln \left(\left\{x\right\}\right)\right)}{\pi }\right)^{-\ln \left(\left\{x\right\}\right)}\)is equal toA. \(e^{\frac{1}{\pi }}\)B. \(e^{-\frac{1}{\pi }}\)C. \(e^{-\frac{2}{\pi }}\)D. \(e^{\frac{2}{\pi }}\)
Answer» \(\lim\limits_{x\to 0^+}(\frac{cot^{-1}(ln x)}{π})^{-lnx}\) (1^\(\infty\) - type) = Exp{\(\lim\limits_{x\to 0^+}(\frac{cot^{-1}(ln x)}{π}-1)(-ln x)\)} = Exp{\(\lim\limits_{x\to 0^+}(\frac{cot^{-1}(ln x)-π}{π})(-ln x)\)} = Exp{\(\lim\limits_{x\to 0^+}\frac{-(π-cot^{-1}(ln x))}{π})(-ln x)\)} = Exp{\(\lim\limits_{x\to 0^+}\frac{cot^{-1}(ln x)lnx}{π}\)} ( ∵ cot^-1(-x) = π - cot^-1x) (0 x \(\infty\) - case) = Exp{\(\lim\limits_{x\to 0^+}\cfrac{cot^{-1}(-ln x)}{\frac{\pi}{lnx}}\)} (0/0 - case) = Exp{\(\left\{\lim\limits_{x\to 0^+}\cfrac{\frac{-1}{1+(lnx)^2}\times\frac{-1}x}{\frac{-\pi}{(lnx)^2}\times\frac1x}\right\}\) (By using D.L.H. Rule) = Exp{\(\lim\limits_{x\to 0^+}\frac{-(lnx)^2}{π(1+(lnx)^2)}\)} = Exp\(\left\{\lim\limits_{x\to 0}\cfrac{-1}{\pi(\frac1{(lnx)^2}+1)}\right\}\) = Exp {\(\frac{-1}x\)} (∵ \(\lim\limits_{x\to0^+}\frac{1}{(lnx)^2}\) = \(\frac1{(-\infty)^2}\) = \(\frac1{\infty}\) = 0) = e^-1/x Hence, \(\lim\limits_{x\to 0^+}(\frac{cot^{-1}(ln x)}{π})^{-lnx}\) = \(e^{1/π}\)

11.

\(\lim _{x\to 0+}\left(\frac{\cot^{-1} \left(\ln \left(\left\{x\right\}\right)\right)}{\pi }\right)^{-\ln \left(\left\{x\right\}\right)}\)is equal toA. \(e^{\frac{1}{\pi }}\)B. \(e^{-\frac{1}{\pi }}\)C. \(e^{-\frac{2}{\pi }}\)D. \(e^{\frac{2}{\pi }}\)

Answer»

\(\lim\limits_{x\to 0^+}(\frac{cot^{-1}(ln x)}{π})^{-lnx}\) (1^\(\infty\) - type)

= Exp{\(\lim\limits_{x\to 0^+}(\frac{cot^{-1}(ln x)}{π}-1)(-ln x)\)}

= Exp{\(\lim\limits_{x\to 0^+}(\frac{cot^{-1}(ln x)-π}{π})(-ln x)\)}

= Exp{\(\lim\limits_{x\to 0^+}\frac{-(π-cot^{-1}(ln x))}{π})(-ln x)\)}

= Exp{\(\lim\limits_{x\to 0^+}\frac{cot^{-1}(ln x)lnx}{π}\)} ( ∵ cot^-1(-x) = π - cot^-1x) (0 x \(\infty\) - case)

= Exp{\(\lim\limits_{x\to 0^+}\cfrac{cot^{-1}(-ln x)}{\frac{\pi}{lnx}}\)} (0/0 - case)

= Exp{\(\left\{\lim\limits_{x\to 0^+}\cfrac{\frac{-1}{1+(lnx)^2}\times\frac{-1}x}{\frac{-\pi}{(lnx)^2}\times\frac1x}\right\}\) (By using D.L.H. Rule)

= Exp{\(\lim\limits_{x\to 0^+}\frac{-(lnx)^2}{π(1+(lnx)^2)}\)}

= Exp\(\left\{\lim\limits_{x\to 0}\cfrac{-1}{\pi(\frac1{(lnx)^2}+1)}\right\}\)

= Exp {\(\frac{-1}x\)} (∵ \(\lim\limits_{x\to0^+}\frac{1}{(lnx)^2}\) = \(\frac1{(-\infty)^2}\) = \(\frac1{\infty}\) = 0)

= e^-1/x

Hence, \(\lim\limits_{x\to 0^+}(\frac{cot^{-1}(ln x)}{π})^{-lnx}\) = \(e^{1/π}\)

Discussion

12.	The correct acidity order of the following is A. `(III) gt (IV) gt (II) gt (I)`B. `(IV) gt (III) gt (I) gt (II)`C. `(III) gt (II) gt (I)gt (IV)`D. `(II)gt(III)gt(IV)gt(I)`
Answer» Correct Answer - A

Discussion

13.	Among cellulose, poly (vinyl chloride), nylon and natural rubber, the polymer in which the intermolecular force of attraction is weakest isA. NylonB. Poly(vinyl chloride )C. CelluloseD. Natural Rubber
Answer» Correct Answer - D

Discussion

14.	A thin wire of length `L` is connected to two adjacent fixed points and carries a current `I` in the clockwise direction , as shown in the figure. When the system is put in a uniform magnetic field of strength `B` going into the plane of the paper , the wire takes the shape of a circle . The tension in the wire is A. IBLB. `(IBL)/(pi)`C. `(IBL)/(2pi)`D. `(IBL)/(4pi)`
Answer» Correct Answer - C

Discussion

15.	Assertion (A): Micelles are formed by surfactant molecules above the critical micellization concentration `(CMC)` . Reason(R): The conductivity of a solution having surfactant molecules decreases sharply at the `CMC` .A. Statement-1 is True, Statement-2 is True, Statement-2 is a correct explanation for Statement-1B. Statement-1 is True,Statement-2 is True: Statement-2 is NOT a correct explanantion for Statement-1C. Statement-1 is True, Statement-2 is FalseD. Statement-1 is False,Statement-2 is True.
Answer» Correct Answer - B

Discussion

16.	An acyclic hydrocarbon P, having molecular fromula `C_(6)H_(10)` gave acetone as the only organic product through the followig sequence of reaction in which Q is an intermediate organicn compound The structure of the compound Q isA. B. C. D. `CH_(3)CH_(2)CH_2overset(OH)overset(\|)(C)HCH_(2)CH_(3)`
Answer» Correct Answer - B

Discussion

17.	Using the data provided, calculate the multiple bond energy `(kJ mol^(-1))` of a `C-=C` bond in `C_(2)H_(2)`. That energy is `(` take the bond energy of a `C-H` bond as `350kJ mol^(-1))`. `2C_((s))+H_(2(g))rarr C_(2)H_(2(g)), Delta=225kJ mol^(-1)` `2C_((s))rarr 2C_(g)), DeltaH=1410kJ mol^(-1)` `H_(2(g)) rarr 2H_((g)),DeltaH=330kJ mol^(-1)`A. 1165B. 837C. 865D. 815
Answer» Correct Answer - D

Discussion

18.	Assertion: Boron always froms covalent bond. Reason: The small size of `B^(3+)` favours formation of covalent bond.A. Statement-1 is True, Statement-2 is True, Statement-2 is a correct explanation for Statement-1B. Statement-1 is True,Statement-2 is True: Statement-2 is NOT a correct explanantion for Statement-1C. Statement-1 is True, Statement-2 is FalseD. Statement-1 is False,Statement-2 is True.
Answer» Correct Answer - A

Discussion

19.	The product formed in the reaction of `SOCl_2` (thionyl chloride) with white phosphorous is.A. `PCl_(2)`B. `SO_(2) Cl_(2)`C. `SCl_(2)`D. `POCl_(3)`
Answer» Correct Answer - A

Discussion

20.	Concentrated nitric acid upon long standing turns yellowish-brown due to the formation of :A. NOB. `NO_(2)`C. `N_(2)O`D. `N_(2)O_(4)`
Answer» Correct Answer - B

Discussion

21.	Match the chemical conversion in List-I with the approprotae reagents in List-II and select the correct answer using the code given below this list- ,A. `{:(P,Q,R,S),(2,3,1,4):}`B. `{:(P,Q,R,S),(3,2,1,4):}`C. `{:(P,Q,R,S),(3,2,4,1):}`D. `{:(P,Q,R,S),(3,2,4,1):}`
Answer» Correct Answer - A

Discussion

22.	A parallel plate capacitor has a dielectric slab of dielectric constant K between its plates that covers `1//3` of the area of its plates, as shown in the figure. The total capacitance of the capacitor is C while that of the portion with dielectric in between is `C_1`. When the capacitor is charged, the plate area covered by the dielectric gets charge `Q_1` and the rest of the area gets charge `Q_2`. The electric field in the dielectric is `E_1` and that in the other portion is `E_2`. Choose the correct option/options, ignoring edge effects. A. `(E_(1))/(E_(2)) = 1`B. `(E_(1))/(E_(2))= (1)/(K)`C. `(Q_(1))/(Q_(2))= (3)/(K)`D. `(C)/(C_(1)) = (2+k)/(k)`
Answer» Correct Answer - A::D

Discussion

23.	In the following reaction. `2X + B_(2)H_(6) rarr [BH_(2)(X)_(2)]^(oplus) [BH_(4)]^(Ө)` The amine `(s) x` is /are.A. `NH_(3)`B. `CH_(3)NH_(2)`C. `(CH_(3))_(2)NH`D. `(CH_(3))_(3)N`
Answer» Correct Answer - A::B::C

Discussion

24.	A ray OP of monochromatic light is incident on the face AB of prism ABCD mear vertex B at an incident angle of `60degree` (see figure). If the refractive index of the material of the prism is `sqrt3`, which of the following is (are) are correct? ` A. The ray gets totally internally reflected at face CDB. The ray comes out through face ADC. The angle between the incident ray and the emergent ray is `90^(@)`D. The angle between the incident ray and the emergent ray is `120^(@)`
Answer» Correct Answer - A::B::C::D

Discussion

25.	Using the expression `2d sin theta = lambda`, one calculates the values of `d` by measuring the corresponding angles `theta` in the range `0 to [email protected]`. The wavelength `lambda` is exactly known and error in `theta` is constant for all values of `theta`. As `theta` increases from `[email protected]`A. the absolute error in d remains constantB. the absolute error in d increaseC. the fractional error in d remains constantD. the fractional error in d decreases.
Answer» Correct Answer - D

Discussion

26.	Using the expression `2d sin theta = lambda`, one calculates the values of `d` by measuring the corresponding angles `theta` in the range `0 to [email protected]`. The wavelength `lambda` is exactly known and error in `theta` is constant for all values of `theta`. As `theta` increases from `[email protected]`A. the absolute error in d remains constantB. the absolute error in d increaseC. the fractional error in d remains constantD. the fractional error in d decreases.
Answer» Correct Answer - D

Discussion

27.	Fig. shows a surface XY separating two transparent media, medium 1 and medium 2. Lines ab and cd represent wavefronts of a light wave travelling in medium 1 and incident on XY. Line ef and gh represent wavefront of the light wave in medium 2 after rafraciton. The phase of the ligth wave at c, d, e, and f are `phi_(c)`, phi_(d), `phi_(e)` and `phi_(f)`, respectively. It is given that `phi_(c ) != phi_(f)`. ThenA. `phi_c ` cannot be equal to ` phi_d `B. `phi_d ` can be equal to ` phi_e`C. `( phi_d - phi_f)` is equal to ` ( phi_c - phi_e )`D. `(phi_d - phi_c)` is not equal to ` ( phi_f - phi_e )`
Answer» Correct Answer - C

Discussion

28.	Two transparent media of refractive indicies `mu_(1)` and `mu_(3)` have a solid lens shaped transpar material of refractive index `mu_(2)` between them as shown in figure in column II. A traversing these media is also shown in the figures . In column I different relationsh between `mu_(1),mu_(2)` and `mu_(3)` are given. match them to the ray diagrams shown in column
Answer» Correct Answer - A::B::C::D

Discussion

29.	When liquid medicine of density `rho` is to put in the eye, it is done with the help of a dropper. As the bulp on the top of the dropper is pressed, a drop forms at the opening of the dropper. We wish to estimate the size of the drop. We first assume that the drop formed at the opening is spherical because that requires a minimum increase in its surface energy. To determine the size, we calculate the net vertical force due to the surface tension T when the radius of the drop is R. When this force becomes smaller than the weight of the drop, the drop gets detached from the dropper. If the radius of the opening of the dropper is r, the vertical force due to the surface tension on the drop of radius R (assuming r ltltR) isA. `2pirT`B. `2piRT`C. `(2pir^(2)T)/R`D. `(2piR^(2)T)/r`
Answer» Correct Answer - C

Discussion

30.	When liquid medicine of density `rho` is to put in the eye, it is done with the help of a dropper. As the bulp on the top of the dropper is pressed, a drop forms at the opening of the dropper. We wish to estimate the size of the drop. We first assume that the drop formed at the opening is spherical because that requires a minimum increase in its surface energy. To determine the size, we calculate the net vertical force due to the surface tension T when the radius of the drop is R. When this force becomes smaller than the weight of the drop, the drop gets detached from the dropper. If the radius of the opening of the dropper is r, the vertical force due to the surface tension on the drop of radius R (assuming r ltltR) isA. `1.4xx10^(-6)J`B. `2.7xx10^(-6)J`C. `5.4xx10^(-6)J`D. `8.1xx10^(-6)J`
Answer» Correct Answer - B

Discussion

31.	`C_(p)` and `C_(v)` denote the molar specific heat capacities of a gas at constant pressure and volume respectively. Then `:`A. `C_(p)-C_(v)` is larger for a diatomic ideal gas than for a monoatimic ideal gasB. `C_(p)+C_(v)` is larger for a diatomic ideal gas than for a monoatimic ideal gasC. `C_(p)//C_(v)` is larger for a diatomic ideal gas than for a monoatimic ideal gasD. `C_(p)*C_(v)` is larger for a diatomic ideal gas than for a monoatimic ideal gas
Answer» Correct Answer - B::C

Discussion

32.	Two soap bubbles `A` and `B` are kept in a closed chamber where the air is maintained at pressure `8 N//m^(2)`. The radii of bubbles `A` and `B` are `2 cm` and `4 cm`, respectively. Surface tension of the soap. Water used to make bubbles is `0.04 N//m`. Find the ratio `n_(B)//n_(A)`, where `n_(A)` and `n_(B)` are the number of moles of air in bubbles `A` and `B` respectively. [Neglect the effect of gravity.]
Answer» Correct Answer - 6

Discussion

33.	If in a hypothetical system if the angular momentum and mass are dimensionless. Then which of the following is true.A. The linear momentum varies as `L^(-1)`B. The energy varies as `L^(-2)`C. The power varies as `L^(-4)`D. The force varies as `L^(-5)`
Answer» Correct Answer - A::B::C [M]=[Mass]=`[M^(0)L^(0)T^(0)]` [J] =[Angular momentum] =`[ML^(2)T^(-1)]` Now, `[ML^(2)T^(-1)]=[M^(0)L^(0)T^(0)]` `:.[L^(2)]=[T]` Power [P]=`[MLT^(-2).LT^(-1)]` =`[ML^(2)T^(-3)]` `=[L^(2)L^(-6)]` `[P]=[L^(-4)]` `Energy/Work [W]=`[MLT^(-2).L]` Force [F] `=[MLT^(-2)]=[L.L^(-4)]=[L^(-3)]` Linear momentum [p]=`[MLT^(-1)]=[L.L^(-2)]` `[p]=[L^(-1)]`

Discussion

34.	Consider a thin square sheet of side L and thickness t, made of a material of resistivity `rho`. The resistance between two opposite faces, shown by the shaded areas in the figure is A. directly proportional to LB. directly proportional to tC. independent of LD. independent of t
Answer» Correct Answer - C

Discussion

35.	To find the distance d over which a signal can be seen clearly in foggy conditions, a railways engineer uses dimensional analysis and assumes that the distance depends on the mass density `rho` of the fog, intensity `("power"//"area")` S of the light from the signal and its frequency f. The engineer finds that d is proportional to `S^(1//n)`. The value of n is.
Answer» Correct Answer - 3

Discussion

36.	The order of the oxidation state of the phosphours atom in `H_(3)PO_(2),H_(3)PO_(4),H_(3)PO_(3)` and `H_(4)P_(2)O_(6)` isA. `H_(3)PO_(3)gtH_(3)PO_(2)gtH_(3)PO_(4)gtH_(4)P_(3)O_(6)`B. `H_(3)PO_(4)gtH_(3)PO_(2)gtH_(3)PO_(3)gtH_(4)P_(2)O_(6)`C. `H_(3)PO_(4)gtH_(4)PO_(2)O_(6)gtH_(3)PO_(3)gtH_(3)PO_(2)`D. `H_(3)PO_(2)gtH_(3)PO_(2)gtH_(3)PO_(3)gtH_(4)P_(2)O_(6)gtH_(3)PO_(4)`
Answer» Correct Answer - C

Discussion

37.	The major product of the following reaction is A. B. C. D.
Answer» Correct Answer - C

Discussion

38.	The major product in the following reaction is . A. B. C. D.
Answer» Correct Answer - D

Discussion

39.	The major product of the following reaction is A. a hemiacetalB. an acetalC. an etherD. an ester
Answer» Correct Answer - B

Discussion

40.	Compound p and R upon ozonolysis produce Q and S, respectively . The molecular fromular of Q and S id `C_(8)H_(8)O`. Q undergoes Cannizzaro reaction but not halofrom reaction , whereas S undergoes halofrom reaction but not Cannizzaro reaction . ` (i) Punderset((ii)Zn//H_(2)O)overset((i)O_(3)//CH_(2)Cl_(2))toQunderset((C_(8)H_(8)O))` (ii) `Runderset((ii)Zn//H_(2)O)overset((i)O_(3)//CH_(2)Cl_(2))toSunderset((C_(8)H_(8)O))` The option (s) with suitable combination of P and R, respectively , is(are)A. B. C. D.
Answer» Correct Answer - A::B

Discussion

41.	The option (s) with only amphoteric oxides is (are)A. `Cr_(2)O_(3),BeO,SnO,SnO_(2)`B. `Cr_(2)O_(3),CrO,SnO,PbO`C. `NO, B_(2)O_(3),PbO,SnO_(2)`D. `ZnO,Al_(2)O_(3),PvO,PbO_(2)`
Answer» Correct Answer - A::D

Discussion

42.	Among the following, the correct statement (s) is (are)A. Al`(CH_(3))_(3)` has the three-centre two-electron bonds in its dimeric structureB. `BH_(3)` has the three-centre two-electron bonds in its dimeric structureC. `AlCl_(3)` has the three-centre two-electron bonds in its dimeric structureD. The Lewis acidity of `BCl_(3)` is greater than that of `AlCl_(3 )`
Answer» Correct Answer - A::B::D

Discussion

43.	The reactivity of compound `Z` with different halogens under appropriate conditions is gives below- The observed pattern of electrophilic substitution can be explained by-A. the steric effect of the halogenB. the steric effect of the tert-butyl groupC. the electronic effect of the phenolic groupD. the electronic effect of the tert-butyl group
Answer» Correct Answer - A::B::C::D

Discussion

44.	For the following compounds, the correct statement(s) with respect to nucleophilic substitution reactions is(are) A. I and III follow `S_(N)1` mechanismB. I and II follow `S_(N)2` mechanismC. Compound IV undergoes inversion of configurationD. The order of reactivity for I, III and IV is: `IV gt I gt III`
Answer» Correct Answer - A::B::C::D

Discussion

45.	A small object of uniform density rolls up a curved surface with an initial velocity v. it reaches up to a maximum height of `(3v^2)/(4g) with respect to the initial position. The object isA. ringB. solid sphereC. hollow sphereD. disc
Answer» Correct Answer - D

Discussion

46.	With respect to graphite and diamond, which of the statement given is correct?A. Graphite is harder than diamond.B. Graphite has higher electrical conductivity than diamond.C. Graphite has higher thermal conductivity than diamond.D. Graphite has higher C-C bond order than diamond.
Answer» Correct Answer - B::D

Discussion

47.	For the given aqueous reactions, which of the statement(s) is (are) true ? A. The first reaction is a redox reaction.B. White precipitate is `Zn_(3)[Fe(CN)_(6)]_(2)`C. Addition of filtrate to starch solution gives blue colour.D. White precipitate is soluble in NaOH solution.
Answer» Correct Answer - A::C::D

Discussion

48.	The given graphs//data ` I, II, II` and ` IV` pepresent general terends obseved of diffent physiorpton and chemisorption processes under mild conditions of temperature and pressure , which of the following choice (s) about `I,II,II ` an` IV` is (are) correcty ? .A. I is physisorption and II is chemisorptionB. I is physisorption and III is chemisorptionC. IV is chemisorption and II is chemisorptionD. IV is chemisorption and III is chemisorption
Answer» Correct Answer - A::C

Discussion

49.	A student performed the experiment of determination of focal length of a concave mirror by `u-v` method using an optical bench of length 1.5 meter. The focal length of the mirror used is 24 cm. The maximum error in the location of the image can be 0.2 cm. The 5 sets of `(u,v)` values recorded by the student (in cm) are: `(42,56),(48,48),(60,40),(66,33),(78,39)` . The data set (s) that cannot come from experiment and is (are) incorrectly recorded, is (are)A. (42,56)B. (48,48)C. (66,33)D. (78,39)
Answer» Correct Answer - C::D

Discussion

50.	Statement-1 If the accelerating potential in an X-ray tube is increased, the wavelength of the characterstic X-rays do not change. because Statement-2 When an electron beam strikes the target in an X-ray tube, part of the kinetic energy is converted into X-ray energy.A. Statement-1 is True, Statement-2 is True, Statement-2 is a correct explanation for Statement -1.B. Statement-1 is true, statement-2 is true, Statement-2 is Not a correct explanation for Statement -4C. Statement-1 is true, statement-2 is falseD. Statement-1 is false, statement-2 is true
Answer» Correct Answer - B

Discussion

Explore topic-wise InterviewSolutions in .

Geometrical shapes of the complex formed by the reaction of `Ni^(2+)` with `Cl^(Θ),CN^(Θ)` and `H_(2)O` are :A. octahedral, tetrahedral and square planarB. tetrahedral, square planar and octahedralC. square planar, tetrahedral and octahedralD. octahedral, square planar ans octahedral

The shapes of `XeO_(2)F_(2)` molecule isA. trigonal bipyramidalB. square planarC. tetrahedralD. see-saw

Amongst the given option, the compound(s) in which all the atoms are in one plane in all the possible conformations (if any), is/areA. B. C. `H_(2)C=C=O`D. `H_(2)C=C=CH_(2)`

The total number of basic groups in the following form of lysine is

Amongst the following, the number of compounds soluble in aqueous `NaOH` is `? ,

A compound `H_(2)X` with molar mass of `80 g` is dissolved in a solvent having density of `0.4 g mL^(-1)`. Assuming no change in volume upon dissolution, the molality of a `3.2` molar solution is

\(\lim _{x\to 0+}\left(\frac{\cot^{-1} \left(\ln \left(\left\{x\right\}\right)\right)}{\pi }\right)^{-\ln \left(\left\{x\right\}\right)}\)is equal toA. \(e^{\frac{1}{\pi }}\)B. \(e^{-\frac{1}{\pi }}\)C. \(e^{-\frac{2}{\pi }}\)D. \(e^{\frac{2}{\pi }}\)

The correct acidity order of the following is A. `(III) gt (IV) gt (II) gt (I)`B. `(IV) gt (III) gt (I) gt (II)`C. `(III) gt (II) gt (I)gt (IV)`D. `(II)gt(III)gt(IV)gt(I)`

Among cellulose, poly (vinyl chloride), nylon and natural rubber, the polymer in which the intermolecular force of attraction is weakest isA. NylonB. Poly(vinyl chloride )C. CelluloseD. Natural Rubber

An acyclic hydrocarbon P, having molecular fromula `C_(6)H_(10)` gave acetone as the only organic product through the followig sequence of reaction in which Q is an intermediate organicn compound The structure of the compound Q isA. B. C. D. `CH_(3)CH_(2)CH_2overset(OH)overset(|)(C)HCH_(2)CH_(3)`

The product formed in the reaction of `SOCl_2` (thionyl chloride) with white phosphorous is.A. `PCl_(2)`B. `SO_(2) Cl_(2)`C. `SCl_(2)`D. `POCl_(3)`

Concentrated nitric acid upon long standing turns yellowish-brown due to the formation of :A. NOB. `NO_(2)`C. `N_(2)O`D. `N_(2)O_(4)`

Match the chemical conversion in List-I with the approprotae reagents in List-II and select the correct answer using the code given below this list- ,A. `{:(P,Q,R,S),(2,3,1,4):}`B. `{:(P,Q,R,S),(3,2,1,4):}`C. `{:(P,Q,R,S),(3,2,4,1):}`D. `{:(P,Q,R,S),(3,2,4,1):}`

In the following reaction. `2X + B_(2)H_(6) rarr [BH_(2)(X)_(2)]^(oplus) [BH_(4)]^(Ө)` The amine `(s) x` is /are.A. `NH_(3)`B. `CH_(3)NH_(2)`C. `(CH_(3))_(2)NH`D. `(CH_(3))_(3)N`

If in a hypothetical system if the angular momentum and mass are dimensionless. Then which of the following is true.A. The linear momentum varies as `L^(-1)`B. The energy varies as `L^(-2)`C. The power varies as `L^(-4)`D. The force varies as `L^(-5)`

Consider a thin square sheet of side L and thickness t, made of a material of resistivity `rho`. The resistance between two opposite faces, shown by the shaded areas in the figure is A. directly proportional to LB. directly proportional to tC. independent of LD. independent of t

The major product of the following reaction is A. B. C. D.

The major product in the following reaction is . A. B. C. D.

The major product of the following reaction is A. a hemiacetalB. an acetalC. an etherD. an ester

The option (s) with only amphoteric oxides is (are)A. `Cr_(2)O_(3),BeO,SnO,SnO_(2)`B. `Cr_(2)O_(3),CrO,SnO,PbO`C. `NO, B_(2)O_(3),PbO,SnO_(2)`D. `ZnO,Al_(2)O_(3),PvO,PbO_(2)`

A small object of uniform density rolls up a curved surface with an initial velocity v. it reaches up to a maximum height of `(3v^2)/(4g) with respect to the initial position. The object isA. ringB. solid sphereC. hollow sphereD. disc

With respect to graphite and diamond, which of the statement given is correct?A. Graphite is harder than diamond.B. Graphite has higher electrical conductivity than diamond.C. Graphite has higher thermal conductivity than diamond.D. Graphite has higher C-C bond order than diamond.

For the given aqueous reactions, which of the statement(s) is (are) true ? A. The first reaction is a redox reaction.B. White precipitate is `Zn_(3)[Fe(CN)_(6)]_(2)`C. Addition of filtrate to starch solution gives blue colour.D. White precipitate is soluble in NaOH solution.