question_answer1) In expansion of \[{{({{x}^{2}}-x-2)}^{5}}\], the coefficient of \[{{x}^{2}}\] is
A) \[-80\] done clear
B) 320 done clear
C) 72 done clear
D) 0 done clear
View Answer play_arrowA) \[\frac{\sqrt{7}}{2}\] done clear
B) \[\sqrt{\frac{5}{3}}\] done clear
C) \[\sqrt{\frac{3}{2}}\] done clear
D) \[\sqrt{2}\] done clear
View Answer play_arrowA) \[-1\] done clear
B) \[-2\] done clear
C) \[-3\] done clear
D) \[-4\] done clear
View Answer play_arrowA) \[\left| z \right|>1\] done clear
B) \[\left| z \right|<1\] done clear
C) \[\left| z \right|=1\] done clear
D) \[\left| z \right|\ge \frac{3}{2}\] done clear
View Answer play_arrowA) The line is parallel to \[xy\] plane. done clear
B) The line is perpendicular to z axis. done clear
C) The line passes through point (6, 3, 1) done clear
D) The line intersect the plane \[x-3y+z=3\]. done clear
View Answer play_arrowquestion_answer6) Which of the following function is NOT differentiable at \[x=0\]?
A) \[f(x)=x\left| x \right|\] done clear
B) \[g(x)=\cos \left| x \right|\] done clear
C) \[h(x)={{x}^{\frac{1}{3}}}\] done clear
D) \[k(x)=\sin \left| x \right|-\left| x \right|\] done clear
View Answer play_arrowA) \[1+{{x}^{2}}\] done clear
B) \[\frac{1-{{x}^{2}}}{2}\] done clear
C) \[1-{{x}^{2}}\] done clear
D) \[\frac{1+{{x}^{2}}}{2}\] done clear
View Answer play_arrowA) \[f\] is continuous and differentiable at \[x=0\]. done clear
B) \[\underset{x\to -\infty }{\mathop{\lim }}\,f(x)=0\] done clear
C) \[f\] has one local maxima and one local minima done clear
D) \[f\] is decreasing function in (0, 1). done clear
View Answer play_arrowA) \[\frac{n}{n+1}\] done clear
B) \[\frac{n-1}{n+1}\] done clear
C) \[\frac{1}{n+1}\] done clear
D) \[\frac{1}{n-1}\] done clear
View Answer play_arrowA) \[{{G}^{2}}\] done clear
B) \[\frac{1}{{{G}^{2}}}\] done clear
C) \[2{{G}^{2}}\] done clear
D) \[\frac{3}{{{G}^{2}}}\] done clear
View Answer play_arrowA) \[\frac{2xy}{2y-{{x}^{2}}}\] done clear
B) \[\frac{xy}{2y-{{x}^{2}}}\] done clear
C) \[\frac{xy}{y-{{x}^{2}}}\] done clear
D) \[\frac{2xy}{2+\frac{{{x}^{2}}}{y}}\] done clear
View Answer play_arrowA) \[\frac{5\sqrt{3}}{2}\] done clear
B) \[5\sqrt{\frac{3}{2}}\] done clear
C) \[5\sqrt{\frac{2}{3}}\] done clear
D) \[\frac{5\sqrt{2}}{3}\] done clear
View Answer play_arrowA) 11 done clear
B) \[\frac{4}{5}\sqrt{21}\] done clear
C) \[\sqrt{\frac{17}{3}}\] done clear
D) \[\frac{\sqrt{21}}{5}\] done clear
View Answer play_arrowA) \[\pm \frac{\hat{i}+\hat{j}-\hat{k}}{\sqrt{6}}\] done clear
B) \[\frac{\hat{i}+\hat{j}-2\hat{k}}{\sqrt{6}}\] done clear
C) \[\pm \frac{\hat{i}+\hat{j}+\hat{k}}{\sqrt{6}}\] done clear
D) \[\frac{\hat{i}-\hat{j}+2\hat{k}}{\sqrt{6}}\] done clear
View Answer play_arrowA) \[\ell \,n(\pi )\] done clear
B) \[\ell \,n(2+\pi )\] done clear
C) \[\ell \,n(1+\pi )\] done clear
D) \[\ell \,n(2\pi )\] done clear
View Answer play_arrowA) real and distinct done clear
B) real done clear
C) imaginary done clear
D) real and equal done clear
View Answer play_arrowA) \[\vec{r}.\left( 20\hat{i}-\hat{j}+5\hat{k} \right)=120\] done clear
B) \[\vec{r}.\left( 20\hat{i}-8\hat{j}+5\hat{k} \right)=120\] done clear
C) \[\vec{r}.\left( 20\hat{i}-8\hat{j}+5\hat{k} \right)=2\] done clear
D) \[\vec{r}.\left( 20\hat{i}-8\hat{j}+5\hat{k} \right)=20\] done clear
View Answer play_arrow[Note : C denotes constant of integration] |
A) \[2\cos (xy)+\frac{1}{{{x}^{2}}}=C\] done clear
B) \[2\cos (xy)+{{y}^{2}}=C\] done clear
C) \[2\sin (y)+{{x}^{-2}}=C\] done clear
D) \[2\sin (x\,y)+{{y}^{-2}}=C\] done clear
View Answer play_arrowA) \[2\sin {{18}^{o}}\] done clear
B) \[2\sin {{15}^{o}}\] done clear
C) \[\cos {{36}^{o}}\] done clear
D) \[2\cos {{36}^{o}}\] done clear
View Answer play_arrowquestion_answer20) The equation of directrix of conic\[{{x}^{2}}+2x-{{y}^{2}}+5=0\] is
A) \[{{x}^{2}}=\pm 1\] done clear
B) \[y=\pm 2\] done clear
C) \[y=\pm \sqrt{2}\] done clear
D) \[x=-1\pm \sqrt{2}\] done clear
View Answer play_arrowquestion_answer21) The number of reflexive relation in set \[A=\{a,b,c\}\] is equal to
A) \[{{2}^{9}}\] done clear
B) \[{{2}^{8}}\] done clear
C) \[{{2}^{7}}\] done clear
D) \[{{2}^{6}}\] done clear
View Answer play_arrowA) reflexive but not symmetric done clear
B) reflexive but not transitive done clear
C) symmetric and transitive done clear
D) neither symmetric nor transitive done clear
View Answer play_arrowA) \[\left( 2,\frac{1}{2} \right)\] done clear
B) \[\left( \frac{3}{2},\frac{\sqrt{3}-3}{6} \right)\] done clear
C) \[\left( \frac{5}{4},\frac{\sqrt{3}-2}{4} \right)\] done clear
D) \[\left( \frac{5}{4},\frac{-1}{2} \right)\] done clear
View Answer play_arrowA) 35 done clear
B) 30 done clear
C) 25 done clear
D) 20 done clear
View Answer play_arrowA) \[\frac{2a}{\sqrt{3}}\] done clear
B) \[2a\sqrt{3}\] done clear
C) \[\frac{a}{\sqrt{3}}\] done clear
D) \[\sqrt{3}\] done clear
View Answer play_arrowA) \[\frac{{{\pi }^{2}}}{5}\] done clear
B) \[\frac{{{\pi }^{2}}}{2}\] done clear
C) \[\frac{\pi }{4}+\frac{1}{2}\] done clear
D) \[\frac{\pi }{4}-\frac{1}{2}\] done clear
View Answer play_arrowA) \[y=x+1\] done clear
B) \[y=x+2\] done clear
C) \[y=x-2\] done clear
D) \[y=-x-2\] done clear
View Answer play_arrowquestion_answer28) If function \[f(x)=\sin x-bx+c\]is always increasing for R, then
A) \[b\le 1\] done clear
B) \[b\le 0\] done clear
C) \[b\le -1\] done clear
D) \[b\ge 0\] done clear
View Answer play_arrowquestion_answer29) Consider the frequency distribution of the given number
Value | 1 | 2 | 3 | 4 |
Frequency | 5 | 4 | 0 | \[\alpha \] |
A) 7 done clear
B) 9 done clear
C) 12 done clear
D) 14 done clear
View Answer play_arrowA) tautology done clear
B) contradiction done clear
C) neither tautology nor contradiction done clear
D) either tautology or contradiction done clear
View Answer play_arrowA) \[5.125%\] done clear
B) \[2%\] done clear
C) \[3.125%\] done clear
D) \[10.125%\] done clear
View Answer play_arrowA) \[\sqrt{\frac{2b}{a}}\] done clear
B) \[\sqrt{\frac{a}{2b}}\] done clear
C) \[\sqrt{\frac{a}{b}}\] done clear
D) \[\sqrt{\frac{b}{a}}\] done clear
View Answer play_arrowA) \[1.5\]rad \[{{s}^{-1}}\] done clear
B) \[5.2\]rad \[{{s}^{-1}}\] done clear
C) \[2.5\]rad \[{{s}^{-1}}\] done clear
D) None done clear
View Answer play_arrowA) 5005 J done clear
B) 3755 J done clear
C) 3750 J done clear
D) \[17.5\] J done clear
View Answer play_arrowA) 43200 done clear
B) 432 done clear
C) 72 done clear
D) 7.2 done clear
View Answer play_arrowA) \[\frac{\sqrt{3}}{2}\frac{m{{v}^{2}}}{g}\] done clear
B) zero done clear
C) \[\frac{m{{v}^{3}}}{\sqrt{2}g}\] done clear
D) \[\frac{\sqrt{3}}{16}\frac{m{{v}^{3}}}{g}\] done clear
View Answer play_arrowA) pattern A is more steady done clear
B) pattern B is more steady done clear
C) pattern C is more steady done clear
D) All will have same steadiness done clear
View Answer play_arrowA) 196 Hz done clear
B) 284 Hz done clear
C) 375 Hz done clear
D) 460 Hz done clear
View Answer play_arrowA) the white object done clear
B) the black object done clear
C) all glow with equal brightness done clear
D) grey object done clear
View Answer play_arrowA) increase done clear
B) decrease done clear
C) may increase or decrease done clear
D) remain same done clear
View Answer play_arrowA) \[23.2\] units done clear
B) \[83.5\] units done clear
C) 334 units done clear
D) 167 units done clear
View Answer play_arrowA) \[{{R}^{\left( \frac{n+1}{2} \right)}}\] done clear
B) \[{{R}^{\left( \frac{n-1}{2} \right)}}\] done clear
C) \[{{R}^{n}}\] done clear
D) \[{{R}^{\left( \frac{n-2}{2} \right)}}\] done clear
View Answer play_arrowA) 36 done clear
B) 24 done clear
C) 18 done clear
D) 9 done clear
View Answer play_arrowA) \[\frac{7}{8}m\] done clear
B) \[\frac{3}{8}m\] done clear
C) \[\frac{1}{8}m\] done clear
D) \[\frac{1}{4}m\] done clear
View Answer play_arrowA) \[{{M}_{1}}\ne {{M}_{2}}\] but \[{{Q}_{1}}={{Q}_{2}}\] done clear
B) \[{{M}_{1}}={{M}_{2}}\] done clear
C) \[{{Q}_{1}}={{Q}_{2}}\] done clear
D) \[{{L}_{1}}={{L}_{2}}\] done clear
View Answer play_arrowA) \[\frac{10}{e}C\] done clear
B) \[\frac{e}{10}C\] done clear
C) \[\frac{10}{{{e}^{2}}}C\] done clear
D) \[\frac{{{e}^{2}}}{10}C\] done clear
View Answer play_arrowquestion_answer47) What is the equivalent resistance between A and B in the given circuit?
A) \[4\,\Omega \] done clear
B) \[2\,\Omega \] done clear
C) \[\frac{8}{3}\,\Omega \] done clear
D) \[\frac{3}{3}\,\Omega \] done clear
View Answer play_arrowA) \[{{28}^{o}}C\] done clear
B) \[{{48}^{o}}C\] done clear
C) \[{{52}^{o}}C\] done clear
D) \[{{68}^{o}}C\] done clear
View Answer play_arrowA) \[25\times {{10}^{-6}}C\] done clear
B) \[2\times {{10}^{-6}}C\] done clear
C) \[{{10}^{-6}}C\] done clear
D) \[8\times {{10}^{-6}}C\] done clear
View Answer play_arrowA) \[\frac{{{\mu }_{0}}iv}{2\pi x}\left( \frac{l+b}{b} \right)\] done clear
B) \[\frac{{{\mu }_{0}}{{i}^{2}}v}{4{{\pi }^{2}}x}\log \left( \frac{b}{l} \right)\] done clear
C) \[\frac{{{\mu }_{0}}ilbv}{2\pi x(l+x)}\] done clear
D) \[\frac{{{\mu }_{0}}ilbv}{2\pi }\log \left( \frac{x+l}{x} \right)\] done clear
View Answer play_arrowA) \[{{i}_{2}}>{{i}_{3}}>{{i}_{1}}\] done clear
B) \[{{i}_{2}}>{{i}_{1}}>{{i}_{3}}\] done clear
C) \[{{i}_{1}}>{{i}_{2}}>{{i}_{3}}\] done clear
D) \[{{i}_{1}}>{{i}_{3}}>{{i}_{2}}\] done clear
View Answer play_arrowA) 1 done clear
B) \[\frac{1}{2}\] done clear
C) \[\frac{1}{4}\] done clear
D) 2 done clear
View Answer play_arrowA) \[2\times {{10}^{-8}}\] done clear
B) \[3\times {{10}^{-7}}\] done clear
C) \[6\times {{10}^{-8}}\] done clear
D) \[5\times {{10}^{-7}}\] done clear
View Answer play_arrowquestion_answer54) An achromatic combination of lenses produces
A) image in black and white done clear
B) coloured images done clear
C) images unaffected by variation of refractive index with wavelength done clear
D) highly enlarged images are formed. done clear
View Answer play_arrowA) \[{{\lambda }_{2}}\] is longer than \[{{\lambda }_{1}}\] and the ratio of the longer to the shorter wavelength is \[1.5\] done clear
B) \[{{\lambda }_{1}}\] is longer than \[{{\lambda }_{2}}\] and the ratio of the longer to the shorter wavelength is 1.5 done clear
C) \[{{\lambda }_{1}}\] and \[{{\lambda }_{2}}\] are equal and their ratio is \[1.0\] done clear
D) \[{{\lambda }_{1}}\] is longer than \[{{\lambda }_{2}}\] and the ratio of the longer to the shorter wavelength is \[2.5\] done clear
View Answer play_arrowA) 1 done clear
B) 3 done clear
C) 4 done clear
D) 6 done clear
View Answer play_arrowA) \[\frac{1}{2}\] done clear
B) \[\frac{2}{1}\] done clear
C) \[\frac{5}{4}\] done clear
D) \[\frac{3}{4}\] done clear
View Answer play_arrowquestion_answer58) Which of the following g is correct, about doping in a transistor?
A) Emitter in lightly doped, collector is heavily doped and base in moderately doped. done clear
B) Emitter in lightly doped, collector is moderately doped and base in heavily doped. done clear
C) Emitter in heavily doped, collector is lightly doped and base in moderately doped. done clear
D) Emitter in heavily doped, collector is moderately doped and base in lightly doped. done clear
View Answer play_arrowA) \[2.00\] done clear
B) \[2.82\] done clear
C) \[4.00\] done clear
D) \[1.414\] done clear
View Answer play_arrowA) \[9:1\] done clear
B) \[1:9\] done clear
C) \[3:1\] done clear
D) \[1:3\] done clear
View Answer play_arrowA) \[0.500\] V done clear
B) \[0.325\] V done clear
C) \[0.650\] V done clear
D) \[0.150\] V done clear
View Answer play_arrowA) \[CaC{{\ell }_{2}}\] done clear
B) \[NaC\ell \] done clear
C) NaOH done clear
D) \[NaHC{{O}_{3}}\] done clear
View Answer play_arrowA) \[\Delta S\] (system) decreases but \[\Delta S\] (surroundings) remains the same. done clear
B) \[\Delta S\] (system) increases but \[\Delta S\] (surroundings) decreases. done clear
C) \[\Delta S\] (system) decreases but \[\Delta S\] (surroundings) increases. done clear
D) \[\Delta S\] (system) decreases and \[\Delta S\] (surroundings) also decreases. done clear
View Answer play_arrowquestion_answer64) Which of the following statement is correct?
A) S-S bond is present in \[{{H}_{2}}{{S}_{2}}{{O}_{6}}\]. done clear
B) In peroxosulphuric acid \[({{H}_{2}}S{{O}_{5}})\] sulphur is in \[+8\] oxidation state. done clear
C) Copper powder along with \[A{{l}_{2}}{{O}_{3}}\] and \[{{K}_{2}}O\] is used as a catalyst in the preparation of \[N{{H}_{3}}\] by Haber's process. done clear
D) Change in enthalpy is positive for the preparation of\[S{{O}_{3}}\] by catalytic oxidation of\[S{{O}_{2}}\]. done clear
View Answer play_arrowA) neutral done clear
B) alkaline done clear
C) strongly alkaline done clear
D) acidic done clear
View Answer play_arrowA) done clear
B) done clear
C) done clear
D) done clear
View Answer play_arrowquestion_answer67) Correct match is :
Column I | Column II (Hydrolysis product) | |
[a] | \[Xe{{F}_{2}}\] | (p) HF |
[b] | \[Xe{{F}_{4}}\] | (q) \[Xe{{O}_{3}}\] |
[c] | \[Xe{{F}_{6}}\] | (r) \[Xe\] |
(s) Show disproportion |
A)
A - p, r | B - q, r | C - r, s |
B)
A - q, r | B - q, r, s | C - q |
C)
A - r | B - s | C - p , q, r, s |
D)
A - p ,r | B - p, q, r, s | C - q |
question_answer68) Fog is an example of colloidal system of:
A) Liquid dispersed in gas done clear
B) Gas dispersed in gas done clear
C) Solid dispersed in gas done clear
D) Solid dispersed in liquid done clear
View Answer play_arrowA) \[M{{g}^{2+}}ion\] done clear
B) Cation done clear
C) \[N{{a}^{+}}ion\] done clear
D) both \[M{{g}^{2+}}\] and \[C{{a}^{2+}}\] done clear
View Answer play_arrowA) \[M{{g}^{2+}}ion\] done clear
B) \[C{{a}^{2+}}ion\] done clear
C) \[Na+ion\] done clear
D) both \[M{{g}^{2+}}\]and \[C{{a}^{2+}}\] done clear
View Answer play_arrowA) \[{{O}_{2}}\] at anode and \[{{H}_{2}}\] at cathode done clear
B) \[{{H}_{2}}\] at anode and Zn at cathode done clear
C) \[{{O}_{2}}\] at anode and Zn at cathode done clear
D) \[{{H}_{2}}{{S}_{2}}{{O}_{8}}\] at anode and \[{{H}_{3}}\] at cathode done clear
View Answer play_arrowA) spontaneous done clear
B) non-spontaneous done clear
C) equilibrium done clear
D) None of these done clear
View Answer play_arrowA) done clear
B) done clear
C) done clear
D) done clear
View Answer play_arrowA) 24 lit. of HCl (g) done clear
B) \[0.8\] litre \[C{{l}_{2}}\], and \[20.8\] lit. HCl (g) done clear
C) \[0.8\] lit. \[{{H}_{2}}\] and \[22.4\] lit. HCl (g) done clear
D) \[22.4\] lit. HCl (g) done clear
View Answer play_arrowA) \[n=3,\,\ell =2,\,m=0,\,s=+1/2\] done clear
B) \[n=2,\,\ell =3,\,m=0,\,s=+1/2\] done clear
C) \[n=1,\,\ell =0,\,m=0,\,s=+1/2\] done clear
D) \[n=3,\,\ell =0,\,m=0,\,s=+1/2\] done clear
View Answer play_arrowquestion_answer76) In which of the following compound manganese shows maximum radius?
A) \[Mn{{O}_{2}}\] done clear
B) \[KMn{{O}_{2}}\] done clear
C) MnO done clear
D) \[M{{n}_{2}}{{O}_{7}}\] done clear
View Answer play_arrowA) \[Xe{{O}_{3}}\] done clear
B) \[IO{{F}_{4}}^{+}\] done clear
C) \[PC{{l}_{5}}\] done clear
D) \[XeF_{5}^{\oplus }\] done clear
View Answer play_arrowquestion_answer78) Among the following which one will have the largest O-O bond length:
A) \[K{{O}_{2}}\] done clear
B) \[{{O}_{2}}\] done clear
C) \[{{O}_{2}}^{+}{{[As{{F}_{6}}]}^{-}}\] done clear
D) \[{{K}_{2}}{{O}_{2}}\] done clear
View Answer play_arrowA) \[[{{H}^{+}}]\] from \[HA>[{{H}^{+}}]\] form HB done clear
B) \[HA\,\alpha >\alpha \] of HB done clear
C) \[[A-]>[{{B}^{-}}]\] done clear
D) \[[HA]>[HB]\] done clear
View Answer play_arrowquestion_answer80) The compressibility of a gas is less than unity at S.T.P therefore,
A) \[{{V}_{m}}>22.4\] litres done clear
B) \[{{V}_{m}}<22.4\] litres done clear
C) \[{{V}_{m}}=22.4\]litres done clear
D) \[{{V}_{m}}=44.8\] litres done clear
View Answer play_arrowquestion_answer81) What is true about the following carbohydrate:
A) Itanomerizes in solution phase. done clear
B) It is a reducing sugar. done clear
C) It shows the phenomenon of inversion of sugar in acidic medium. done clear
D) It shows mutarotation. done clear
View Answer play_arrowA) \[Ph-\underset{\begin{smallmatrix} | \\ OH \end{smallmatrix}}{\mathop{\overset{\begin{smallmatrix} Ph \\ | \end{smallmatrix}}{\mathop{C}}\,}}\,-Ph\] done clear
B) \[Ph-\underset{\begin{smallmatrix} | \\ OH \end{smallmatrix}}{\mathop{\overset{\begin{smallmatrix} Me \\ | \end{smallmatrix}}{\mathop{C}}\,}}\,-Et\] done clear
C) \[H-\underset{\begin{smallmatrix} | \\ OH \end{smallmatrix}}{\mathop{\overset{\begin{smallmatrix} Me \\ | \end{smallmatrix}}{\mathop{C}}\,}}\,-Et\] done clear
D) \[Me-\underset{\begin{smallmatrix} || \\ OH \end{smallmatrix}}{\mathop{C}}\,-Et\] done clear
View Answer play_arrowquestion_answer83) Product is:
A) done clear
B) done clear
C) done clear
D) done clear
View Answer play_arrowquestion_answer84) Acetaldehyde and Propyne can be distinguish by:
(i) Tollen's reagent |
(ii) \[{{I}_{2}}\]/NaOH |
(iii) Lucas reagent |
(iv) neutral \[FeC{{l}_{3}}\] |
A) (i), (ii) & (iii) done clear
B) (ii) & (iii) done clear
C) (i) & (ii) done clear
D) (iii) & (iv) done clear
View Answer play_arrowquestion_answer85) The correct order of activation of benzene ring towards an electrophile is:
(I) |
(II) |
(III) |
(IV) |
A) \[(IV)>(III)>(II)>(I)\] done clear
B) \[(III)>(I)>(IV)>(II)\] done clear
C) \[(III)>(IV)>(I)>(II)\] done clear
D) \[(IV)>(III)>(II)>(I)\] done clear
View Answer play_arrowquestion_answer86) The product is :
A) done clear
B) done clear
C) done clear
D) done clear
View Answer play_arrowA) done clear
B) done clear
C) done clear
D) done clear
View Answer play_arrowquestion_answer88) Find the total +M groups attached to the benzene ring in the given compound?
A) 6 done clear
B) 4 done clear
C) 5 done clear
D) 3 done clear
View Answer play_arrowquestion_answer89) The following carbocation rearranges to give
A) done clear
B) done clear
C) done clear
D) done clear
View Answer play_arrowquestion_answer90) Which is the correct match for the following compounds?
(p) | (i) Peptide linkage |
(q) \[-{{\left[ NH-\underset{\begin{smallmatrix} | \\ Ph \end{smallmatrix}}{\mathop{C}}\,H-\overset{\begin{smallmatrix} O \\ || \end{smallmatrix}}{\mathop{C}}\,-NH-\underset{\begin{smallmatrix} | \\ C{{H}_{3}} \end{smallmatrix}}{\mathop{C}}\,H-\overset{\begin{smallmatrix} O \\ || \end{smallmatrix}}{\mathop{C}}\, \right]}_{n}}\] | (ii) Synthetic polymer |
(r) \[-{{\left[ NH-{{(C{{H}_{2}})}_{2}}-NH-\overset{\begin{smallmatrix} O \\ || \end{smallmatrix}}{\mathop{C}}\,-{{(C{{H}_{2}})}_{2}}-\overset{\begin{smallmatrix} O \\ || \end{smallmatrix}}{\mathop{C}}\, \right]}_{n}}\] | (iii) Glycoside linkage |
A) p-i, q-ii, r-iii done clear
B) p-iii, q-i, r-ii done clear
C) p-iii, q-ii, r-i done clear
D) p-ii, q-i, r-iii done clear
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