p-Block Elements PYQs Set 13 (PDF)

Set 13 of 14 · Questions 361-390 of 400

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Mere Teacher · Previous Year Questions NEET Chemistry · p-Block Elements · Set 13 (Q361-390)
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361. $Match list - I with List - II List-I (A) N_{2} (g) + 3 H_{2} (g) \to 2 N H_{3} (g) (B) CO(g) + 3 H_{2} (g) \to C H_{4} (g)+ H_{2} O(g) (C) CO(g)+ H_{2} (g) \to HCHO(g) (D) CO(g) + 2 H_{2} (g) \to C H_{3} OH(g) List-II (I) Cu (II) Cu/ZnO- C r_{2} O_{3} (III) F e_{x} O_{y} + K_{2} O + A l_{2} O_{3} (IV) Ni Choose the correct answer from the options given below:$ (1) $(A) - (II), (B) - (IV), (C) - (I), (D) - (III)$ (2) $(A) - (II), (B) - (I), (C) - (IV), (D) - (III)$ (3) $(A) - (III), (B) - (IV), (C) - (I), (D) - (II)$ (4) $(A) - (III), (B) - (I), (C) - (IV), (D) - (II)$ 362. $The true statement for the acids of phosphorus, H3PO2 , H3PO3 and H3PO4 is :$ (1) $the order of their acidity is H3PO2 > H3PO3 > H3PO4$ (2) $all of them are reducing in nature$ (3) $all of them are tribasic acids$ (4) $the geometry of phosphorus is tetrahedral in all the three$ 363. $In the reaction of gold with aquaregia, oxidation state of nitrogen changes from$ (1) $+4 to +2$ (2) $+6 to +4$ (3) $+5 to +2$ (4) $+3 to +1$ 364. $Shapes of certain interhalogen compounds are stated below. Which one of them is not correctly stated?$ (1) $I F_{7} : pentagonal bipyramid$ (2) $B r F_{5} : trigonal bipyramid$ (3) $B r F_{3} : planar T-shaped$ (4) $I C l_{3} : planar dimeric$ 365. $Identify the incorrect pair from the following :$ (1) $Fluorspar- BF_{3}$ (2) $Cryolite- Na_{3} AlF_{6}$ (3) $Fluoroapatite- 3 Ca_{3} (PO_{4})_{2} \cdot CaF_{2}$ (4) $Carnallite- KCl \cdot MgCl_{2} \cdot 6 H_{2} O$ 366. $Strong reducing behaviour of H3PO2 is due to :$ (1) $Presence of one -OH group and two P-H bonds$ (2) $High electron gain enthalpy of phosphourus$ (3) $High oxidation state of phosphorus$ (4) $Presence of two -OH groups and one P-H bond.$ 367. $Which of the following oxides of nitrogen is thermally most stable ?$ (1) $N2O5$ (2) $N2O$ (3) $NO$ (4) $N2O3$ 368. $Which group elements from following are called as chalcogens?$ (1) $Group 13$ (2) $Group 15$ (3) $Group 16$ (4) $Group 17$ 369. $Nitrogen gas is obtained by thermal decomposition of$ (1) $Ba (N O_{3})_{2}$ (2) $Ba (N_{3})_{2}$ (3) $N a N O_{2}$ (4) $N a N O_{3}$ 370. $Which inert gas has abnormal behaviour on liquefaction ?$ (1) $Xe$ (2) $He$ (3) $Ar$ (4) $Kr$ 371. $Which among the following elements of group-2 exhibits anomalous properties?$ (1) $Be$ (2) $Mg$ (3) $Ca$ (4) $Ba$ 372. $Consider the following reaction : 2 HSO_{4}^{-} (a q) (1) Electrolysis (2) Hydrolysis 2 HSO_{4}^{-} + 2 H^{+} + A The dihedral angle in product A in its solid phase at 110K is:$ (1) $104°$ (2) $111.5°$ (3) $90.2°$ (4) $111.0°$ 373. $Identify X, Y and Z in the following reaction, (Equation not balanced) Cl O ∙ + NO_{2} \to X H_{2} O Y + Z$ (1) $X= C 1 O N O_{2}, Y=HOC1, Z = N O_{2}$ (2) $X= C 1 N O_{2}, Y=HC1, Z= H N O_{3}$ (3) $X= C 1 O N O_{2}, Y=HOC1, Z= H N O_{3}$ (4) $X= C 1 N O_{3}, Y= C 1_{2}, Z= N O_{2}$ 374. $Identify the correct formula of ‘oleum’ from the following$ (1) $H_{2} S_{2} O_{7}$ (2) $H_{2} S O_{3}$ (3) $H_{2} S O_{4}$ (4) $H_{2} S_{2} O_{8}$ 375. $The correct order of increasing bond angles in the following species is$ (1) $C 1_{2} O < C l O_{2} < C l O_{2}^{-}$ (2) $C l O_{2} < C 1_{2} O < C l O_{2}^{-}$ (3) $C 1_{2} O < C l O_{2}^{-} < C l O_{2}$ (4) $C l O_{2}^{-} < C 1_{2} O < C l O_{2}$ 376. $Sulphur trioxide can be obtained by which of the following reaction :$ (1) $CaSO4 + C$ (2) $Fe2 (SO4)3$ (3) $S + H2SO4$ (4) $H2SO4 + PCl5$ 377. $Which is the correct statement for the given acids?$ (1) $Phosphinic acid is a monoprotic acid while phosphonic acid is a diprotic acid.$ (2) $Phosphinic acid is a diprotic acid while phosphonic acid is a monoprotic acid.$ (3) $Both are diprotic acids.$ (4) $Both are triprotic acids.$ 378. $"A" obtained by Ostwald's method involving air oxidation of N H_{3}, upon further air oxidation produces "B". "B" on hydration forms an oxoacid of Nitrogen along with evolution of "A". The oxoacid also produces "A" and gives positive brown ring test$ (1) $N O_{2}, N_{2} O_{5}$ (2) $N O_{2}, N_{2} O_{4}$ (3) $NO, N O_{2}$ (4) $N_{2} O_{3}, N O_{2}$ 379. $Some reactions of N Q_{2} relevant to photochemical smog formation are Identify A, B, X and Y$ (1) $X = [O], Y = NO, A = O_{2}, B = O_{3}$ (2) $X = N_{2} O, Y = [O], A = O_{3}, B = NO$ (3) $X = \frac{1}{2} O_{2}, Y = N O_{2}, A = 0_{3}, B = O_{2}$ (4) $X - NO, Y - [O], A - 0_{2}, B = N_{2} O_{3}$ 380. $The geometry around boron in the product ' B^{1} formed from the following reaction is B F_{3} +NaH 450 K A + NaF A + N M e_{3} \to B$ (1) $trigonal planar$ (2) $tetrahedral$ (3) $pyramidal$ (4) $square planar$ 381. $Identify the incorrect statement, regarding the molecule X e O_{4} :$ (1) $X e O_{4} molecule is square planar.$ (2) $There are four p π - d π bonds.$ (3) $There are four s p^{3} ‐p, 0 bonds.$ (4) $X e O_{4} molecule is tetrahedral.$ 382. $Which of the following oxoacids of sulphur contains "S" in two different oxidation states?$ (1) $H_{2} S_{2} O_{3}$ (2) $H_{2} S_{2} O_{6}$ (3) $H_{2} S_{2} O_{7}$ (4) $H_{2} S_{2} O_{8}$ 383. $Among the given oxides of nitrogen; N_{2} 0, N_{2} O_{3}, N_{2} O_{4} and N_{2} O_{5}, the number of compound/(s) having N-N bond is :$ (1) $1$ (2) $2$ (3) $3$ (4) $4$ 384. $The number of S-O bond in S_{2} O_{8}^{2 -} and number of S-S bond in Rhombic Sulphur are respectively :$ (1) $8, 8$ (2) $6, 8$ (3) $2, 4$ (4) $4, 2$ 385. $Which of the following bonds has the highest energy?$ (1) $SS$ (2) $OO$ (3) $SeSe$ (4) $TeTe$ 386. $Reaction of thionyl chloride with white phosphorus forms a compound [A], which on hydrolysis gives [B], a dibasic acid. [A] and [B] are respectively$ (1) $P_{4} O_{6} and H_{3} P O_{3}$ (2) $P C l_{3} and H_{3} P O_{3}$ (3) $P C 1_{5} and H_{3} P O_{4}$ (4) $P O C l_{3} and H_{3} P O_{4}$ 387. $Given below are two statements : one is labeled as Assertion A and the other is labelled as Reason R. Assertion A : Boric acid is a weak acid Reason R : Boric acid is not able to release H^{+} ion on its own. It receives O H^{-} ion from water and releases H^{+} ion. choose the most appropriate answer from the options given, below.$ (1) $Both A and R are correct and R is the correct explanation of A$ (2) $Both A and R are correct but R is NOT the correct explanation of A$ (3) $A is correct but R is not correct$ (4) $A is not correct but R is correct$ 388. $P4O10 is not used to dry NH3 gas because :$ (1) $P4O10 reacts with moisture in NH3$ (2) $P4O10 is not a drying agent$ (3) $P4O10 is acidic and NH3 is basic$ (4) $P4O10 is basic and NH3 is acidic$ 389. $Pure nitrogen is prepared in the laboratory by heating a mixture of$ (1) $N H_{4} O H + N a C l$ (2) $N H_{4} N O_{3} + N a C l$ (3) $N H_{4} C l + NaOH$ (4) $N H_{4} C l + N a N O_{2} .$ 390. $Match the Xenon Compounds in Column-I with its structure in Column-II And Assign the Correct Code: Column-I (A) XeF_{4} (B) XeF_{6} (C) XeOF_{4} (D) XeO_{3} Column-II (I) Pyramidal (II) Square planar (III) Distorted octahedral (IV) Square pyramidal$ (1) $(A)-(I); (B)-(II); (C)-(III); (D)-(IV)$ (2) $(A)-(II); (B)-(III); (C)-(IV); (D)-(I)$ (3) $(A)-(II); (B)-(III); (C)-(I); (D)-(IV)$ (4) $(A)-(III); (B)-(IV); (C)-(I); (D)-(II)$