CBSE 12th Standard Chemistry Subject The p-Block Elements Ncert Exemplar 5 Mark Questions 2021
By QB365
QB365 Provides the updated NCERT Exemplar Questions for Class 12, and also provide the detail solution for each and every NCERT Exemplar questions. NCERT Exemplar questions are latest updated question pattern from NCERT, QB365 will helps to get more marks in Exams
QB365 - Question Bank Software
CBSE 12th Standard Chemistry Subject The p-Block Elements Ncert Exemplar 5 Mark Questions 2021
12th Standard CBSE
-
Reg.No. :
Chemistry
-
An amorphous solid 'A' burns in air to form a gas 'B' which turns lime water milky. The gas is also produced as a by-product during roasting of sulphide ore. This gas decolourises acidified aqueous KMnO4 solution and reduces Fe3+ to Fe2+ Identify the solid "A" and the gas "B" and write the reactions involved.
(a) -
On heating, lead (II) nitrate gives a brown gas 'A'. The gas 'A' on cooling changes to colourless solid 'B'. Solid 'B' on heating with NO changes to a blue solid 'C'. Identiy 'A', 'B' and 'C' and also write reactions involved and draw the structures of 'B' and 'C'.
(a) -
On heating compound(A) gives a gas (B) which is a constituent of air. This gas when treated with 3 mol of hydrogen (H2) in the presence of a catalyst gives another gas (C) which is basic in nature. Gas C on further oxidation in moist condition gives a compound (D) which is a part of acid rain. Identify compounds (A) to (D) and also give necessary equations of all the steps involved.
(a) -
On heating compound (A)gives a gas (B)which is a constituent of air.This gas when treated with 3 mol of hydrogen (H2) in the presence of a catalyst gives another gas (C) which is basic in nature. Gas C on further oxidation in moist condition gives gives a compound (D) which is a part of acid rain. Identify compounds (A) to D and also give necessary equations of all the steps involved.
(a) -
An amorphous solid A burns in air to form a gas B which turns lime water milky. The gas is also produced as a byproduct during roasting of sulphide ore. This gas decolourises acidified aqueous KMnO4 solution and reduces Fe 3+ to Fe2+. Identify the solid 'A' and the gas 'B ' and write the reactions involved.
(a)
