p-Block Elements PYQs Set 7 (PDF)

Set 7 of 14 · Questions 181-210 of 400

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Mere Teacher · Previous Year Questions NEET Chemistry · p-Block Elements · Set 7 (Q181-210)
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181. $Which of the following oxide is amphoteric in nature?$ (1) $SiO_{2}$ (2) $GeO_{2}$ (3) $CO_{2}$ (4) $SnO_{2}$ 182. $Given below are two statements : Statement (I) : SiO_{2} and GeO_{2} are acidic while SnO and PbO are amphoteric in nature. Statement (II) : Allotropic forms of carbon are due to property of catenation and p π - d π bond formation. In the light of the above statements, choose the most appropriate answer from the options given below:$ (1) $Both Statement I and Statement II are false$ (2) $Both Statement I and Statement II are true$ (3) $Statement I is true but Statement II is false$ (4) $Statement I is false but Statement II is true$ 183. $Number of electron deficient molecules among the following P H_{3}, B_{2} H_{6}, C C 1_{4}, N H_{3}, LiH and B C 1_{3} is$ (1) $0$ (2) $1$ (3) $2$ (4) $3$ 184. $Which of the following is incorrect statement?$ (1) $PbF_{4} is covalent in nature$ (2) $SiCl_{4} is easily hydrolysed$ (3) $GeX_{4} (X = F, Cl, Br, I) is more stable than GeX_{2}$ (4) $SnF_{4} is ionic in nature$ 185. $Which of the following is not correct about carbon monoxide?$ (1) $It reduces oxygen carrying ability of blood.$ (2) $The carboxyhaemoglobin (haemoglobin bound to CO) is less stable than oxyhaemoglobin.$ (3) $It is produced due to incomplete combustion.$ (4) $It forms carboxyhaemoglobin.$ 186. $Among K, Ca, Fe and Zn, the element which can form more than one binary compound with chlorine is$ (1) $Fe$ (2) $Zn$ (3) $K$ (4) $Ca$ 187. $Which pair of oxides is acidic in nature?$ (1) $N_{2} O, BaO$ (2) $CaO, SiO_{2}$ (3) $B_{2} O_{3}, CaO$ (4) $B_{2} O_{3}, Si O_{2}$ 188. $In the manufacture of bromine from sea water, the mother liquor containing bromides is treated with$ (1) $carbon dioxide$ (2) $chlorine$ (3) $iodine$ (4) $sulphur dioxide.$ 189. $Match the following: Column-I (A) Pure nitrogen (B) Haber process (C) Contact process (D) Deacon’s process Column-II (I) Chlorine (II) Sulphuric Acid (III) Ammonia (IV) Sodium azide or Barium azide Which of the following is the Correct option?$ (1) $(A)-(I); (B)-(II); (C)-(III); (D)-(IV)$ (2) $(A)-(II); (B)-(IV); (C)-(I); (D)-(III)$ (3) $(A)-(III); (B)-(IV); (C)-(II); (D)-(I)$ (4) $(A)-(IV); (B)-(III); (C)-(II); (D)-(I)$ 190. $The maximum covalency of a non-metallic group 15 element ' E ' with weakest E - E bond is:$ (1) $4$ (2) $6$ (3) $3$ (4) $5$ 191. $Give below are two statements: Statement-I : Noble gases have very high boiling points. Statement-II: Noble gases are monoatomic gases. They are held together by strong dispersion forces. Because of this they are liquefied at very low temperature. Hence, they have very high boiling points. In the light of the above statements. choose the correct answer from the options given below:$ (1) $Statement I is false but Statement II is true.$ (2) $Both Statement I and Statement II are true.$ (3) $Statement I is true but Statement II is false.$ (4) $Both Statement I and Statement II are false.$ 192. $Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : Melting point of Boron (2453 K) is unusually high in group 13 elements. Reason (R) : Solid Boron has very strong crystalline lattice.In the light of the above statements, choose the most appropriate answer from the options given below ;$ (1) $Both (A) and (R) are correct but (R) Is not the correct explanation of (A)$ (2) $Both (A) and (R) are correct and (R) is the correct explanation of (A)$ (3) $(A) is true but (R) is false$ (4) $(A) is false but (R) is true$ 193. $Reaction of an inorganic sulphite X with dilute H_{2} S O_{4} generates compound Y. Reaction of Y with NaOH gives X. Further, the reaction of X with Y and water affords compound Z. Y and Z, respectively, are :$ (1) $S and N a_{2} S O_{3}$ (2) $S O_{2} and NaHS O_{3}$ (3) $S O_{2} and N a_{2} S O_{3}$ (4) $S O_{3} and NaHS O_{3}$ 194. $Acidity of diprotic acids in aqueous solutions increases in the order$ (1) $H_{2} S < H_{2} S e < H_{2} T e$ (2) $H_{2} S e < H_{2} S < H_{2} T e$ (3) $H_{2} T e < H_{2} S < H_{2} S e$ (4) $H_{2} S e < H_{2} T e < H_{2} S$ 195. $Which of the following orders is not in accordance with the property stated against it ?$ (1) $F2 > Cl2 > Br2 > I2 ; bond dissociation energy$ (2) $F2 > Cl2 > Br2 > I2; oxidising power$ (3) $HI > HBr > HCl > HF; acidic property in water$ (4) $F2 > Cl2 > Br2 > I2; electronegativity$ 196. $The number of naturally occurring p -block elements that are diamagnetic is$ (1) $18$ (2) $6$ (3) $5$ (4) $7$ 197. $The stability of + 1 oxidation state among Al, Ga, In and Tl increases in the sequence$ (1) $Al < G a < I n < T l$ (2) $Tl < I n < G a < A l$ (3) $In < T 1 < G a < A 1$ (4) $Ga < In < A 1 < T 1$ 198. $Give below are two statements: One is labelled as Assertion A and the other is labelled as Reason R: Assertion A: The stability order of +1 oxidation state of Ga, In and T 1 is Ga < In < T 1 . Reason R: The inert pair effect stabilizes the lower oxidation state down the group. In the light of the above statements, choose the correct answer from the options given below:$ (1) $A is true but R is false.$ (2) $A is false but R is true.$ (3) $Both A and R are true and R is the correct explanation of A .$ (4) $Both A and R are true but R is NOT the correct explanation of A .$ 199. $About 20 km above the earth, there is an ozone layer. Which one of the following statements about ozone and ozone layer is true?$ (1) $It is beneficial to us as it stops U.V radiation.$ (2) $Conversion of O_{3} to O_{2} is an endothermic reaction.$ (3) $Ozone has a triatomic linear molecule.$ (4) $It is harmful as it stops useful radiation.$ 200. $It is noticed that Pb^{2 +} is more stable than Pb^{4 +} but Sn^{2 +} is less stable than Sn^{4 +} . Observe the following reactions. PbO_{2} + Pb \to 2 PbO; Δ_{r} G^{\circ} (1) SnO_{2} + Sn \to 2 SnO; Δ_{r} G^{\circ} (2) Identify the correct set from the following$ (1) $Δ_{r} G^{\circ} (1) < 0; Δ_{r} G^{\circ} (2) < 0$ (2) $Δ_{r} G^{\circ} (1) > 0; Δ_{r} G^{\circ} (2) > 0$ (3) $Δ_{r} G^{\circ} (1) < 0; Δ_{r} G^{\circ} (2) > 0$ (4) $Δ_{r} G^{\circ} (1) > 0; Δ_{r} G^{\circ} (2) < 0$ 201. $The substance used as a smoke screen in warfare is$ (1) $S i C l_{4}$ (2) $P H_{3}$ (3) $P C l_{5}$ (4) $acetylene.$ 202. $In BrF3 molecule, the lone pairs occupy equatorial positions to minimise$ (1) $lone pair-bond pair repulsions only$ (2) $bond pair-bond pair repulsion only$ (3) $lone pair-lone pair and lone pair-bond pair repulsons$ (4) $lone pair-lone pair repulsions only$ 203. $The number of P-O-P bonds in the structure of phosphorus pentoxide and phosphorus trioxide are respectively$ (1) $6, 6$ (2) $5, 5$ (3) $5, 6$ (4) $6, 5$ 204. $Which of the following is a nitric acid anhydride?$ (1) $NO$ (2) $N O_{2}$ (3) $N_{2} O_{5}$ (4) $N_{2} O_{3}$ 205. $When borax is heated with CoO on a platinum loop, blue coloured bead formed is largely due to :$ (1) $B_{2} O_{3}$ (2) $Co (B O_{2})_{2}$ (3) $C o B_{4} O_{7}$ (4) $Co[B_{4} O_{5} (O H)_{4}]$ 206. $Given below are two statements: Statement I: Nitrogen forms oxides with +1 to +5 oxidation states due to the formation of pπ - pπ bond with oxygen. Statement II: Nitrogen does not form halides with +5 oxidation state due to the absence of d-orbital in it. In the light of given statements, choose the correct answer from the options given below.$ (1) $Both Statement I and Statement II are true$ (2) $Statement I is true but Statement II is false$ (3) $Statement I is false but Statement II is true$ (4) $Both Statement I and Statement II are False$ 207. $Given below are two statements : Statement-I: Methane and steam passed over a heated Ni catalyst produces hydrogen gas. Statement-II: Sodium nitrite reacts with N H_{4} Cl to give H_{2} O, N_{2} and NaCl. In the light of the above statements, choose the most appropriate answer from the options given below :$ (1) $Statement I is incorrect but Statement II is correct$ (2) $Both the statements I and II are incorrect$ (3) $Statement I is correct but Statement II is incorrect$ (4) $Both the statements I and II are correct$ 208. $Name the two type of the structure of silicate in which one oxygen atom of [S i O_{4}]^{4 -} is shared?$ (1) $Linear chain silicate$ (2) $Sheet silicate$ (3) $Pyrosilicate$ (4) $Three dimensional$ 209. $Which of the following does not give oxygen on heating ?$ (1) $Zn (ClO3)2$ (2) $K2Cr2O7$ (3) $(NH4)2 Cr2O7$ (4) $KClO3$ 210. $Which of the following statement is not correct about diborane?$ (1) $Both the Boron atoms are sp^{2} hybridised.$ (2) $There are two 3 -centre-2-electron bonds.$ (3) $The four terminal B-H bonds are two centre two electron bonds$ (4) $The four terminal Hydrogen atoms and the two Boron atoms lie in one plane.$