Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
99 Percentile Qs Bank for JEE MainChemistryp Block Elements (Group 15, 16, 17 & 18)

Referring to the following reactions the missing products A, B, C, and D respectively are NH 4 Cl ( aq ) + NaNO 2 ( aq ) → [ A ] + H 2 O ( l ) + NaCl ( aq ) NH 4 2 Cr 2 O 7 → Δ B + H 2 O l + Cr 2 O 3 s Cu + HNO 3 ( dilute ) → Cu ( NO 3 ) 2 + [ C ] + H 2 O ( l ) Cu + HNO 3 ( concentrate ) → Cu ( NO 3 ) 2 + [ D ] + H 2 O ( l )

Options

  1. AN 2 , N 2 , NO , NO 2
  2. BN 2 , NH 3 , N 2 , NO
  3. CN 2 , N 2 , NO 2 , NO 2
  4. DN 2 , NH 3 , NO 2 , N 2 O 4

Correct answer

A. N 2 , N 2 , NO , NO 2

Step-by-step solution

(i) In the laboratory, dinitrogen is prepared by treating an aqueous solution of ammonium chloride with sodium nitrite. NH 4 Cl aq + NaNO 2 aq → N 2 g + 2 H 2 O l + NaCl aq Small amounts of NO and HNO 3 are also formed as impurities, which can be removed by passing the gas through aqueous sulphuric acid containing potassium dichromate. (ii) Dinitrogen can also be prepared by heating ammonium dichromate NH 4 2 Cr 2 O 7 s ⟶ Δ N 2 (g) + 4H 2 O l ⁡ + Cr 2 O 3 s (iii) Copper metal reacts with dilute HNO 3 to form nitrog

Practice p Block Elements (Group 15, 16, 17 & 18) on Quantrex Academy →

More from p Block Elements (Group 15, 16, 17 & 18)

Correct statement(s) about the compounds X , Y and Z is(are) 2026Correct statement(s) about the compounds P , Q and R is(are) 2026Find the correct statements related to group 15 hydrides. A. Reducing nature increases from NH₃ to BiH₃ B. Tendency to donate lone pair of electrons decreases from NH₃ to BiH₃ C. T 2026Treatment of a gas ' X ' with a freshly prepared ferrous sulphate solution gives a compound ' Y ' as a brown ring. The compounds X and Y are. 2026Correct statements from the following are: A. Nitrogen in oxidation states from +1 to +4 disproportionates in acid medium. B. Nitrogen has the ability to form d - p multiple bonds 2026Given below are two statements: Statement I: The covalency of oxygen is generally two but it can exceed upto four. The oxidation state of oxygen in SO₂ is -2 and in OF₂ it is +2 . 2026Given below are two statements : Statement (I) : Oxidising power of halogens decreases in the order F₂ > Cl₂ > Br₂ > I₂ , which is the basis of "Layer test". Statement (II) : "Laye 2026Given below are two statements : Statement I : The increasing order of boiling point of hydrogen halides is HCl Statement II : The increasing order of melting point of hydrogen hal 2026 Full p Block Elements (Group 15, 16, 17 & 18) list All 99 Percentile Qs Bank for JEE Main PYQs