Please give tips to study p,d,f block elements because I've seen the CBSE questions where questions any part are given and out of so many reactions, one is asked.Please give some imporant reactions from exam-oriented questions.
Asked by Benjamin
| 18th Feb, 2017,
12:06: PM
Expert Answer:
Looking at the last five years board papers, we have seen questions asked from the topics mentioned below:
For 1 Mark Questions:
•Oxides of Nitrogen
•Allotropic forms of Phosphorus
•Oxoacids of Phosphorus
•Chlorine
•Group 15 Elements
For 2 Marks Questions:
•Interhalogen Compounds
•Group 18 Elements
•Oxoacids of Phosphorus
•Interhalogen Compounds
•Chlorine
•General Properties of
Transition Elements
•Some Important Compounds
of Transition Elements
For 3 Marks Questions:
•Sulphur dioxide
•Group 16 Elements
•Group 15 Elements
•The Actinoids and General
Properties of the Transition
Elements
•The Lanthanoids
For 5 Marks Questions:
•Interhalogens & Oxoaxids
of Phosphorus
•Oxides of Nitrogen
•Oxides of Nitrogen
•Allotropic forms of Phosphorus
•Oxoacids of Phosphorus
•Chlorine
•Group 15 Elements
For 2 Marks Questions:
•Interhalogen Compounds
•Group 18 Elements
•Oxoacids of Phosphorus
•Interhalogen Compounds
•Chlorine
•General Properties of
Transition Elements
•Some Important Compounds
of Transition Elements
For 3 Marks Questions:
•Sulphur dioxide
•Group 16 Elements
•Group 15 Elements
•The Actinoids and General
Properties of the Transition
Elements
•The Lanthanoids
For 5 Marks Questions:
•Interhalogens & Oxoaxids
of Phosphorus
•Oxides of Nitrogen
Answered by Vaibhav Chavan
| 20th Feb, 2017,
10:38: AM
Concept Videos
- H3pO4 ka total charge
- pls explain
- why nitrogen have long range of oxidation state?
- We know that nitrogen can't have +5 oxidation state,so why N2O5 exists?
- Why NO does not dimerise even it has odd electron?
- Explain the structures of BCl3 and PH3 with the help of theory of hybridisation.
- A gas X is formed by heating ammonium nitrite. X can also be obtained by heating barium azide. Mg metal burns in X to form Y. Y reacts with water to form a gas zZwhich turns red litmus blue. Identify X,Y and Z. Write all the reactions involved.
- A gas is obtained by the reaction of magnesium nitride with water. It acts as a lewis base and turns red litmus blue. It reacts with CuO as a reducing agent. It is obtained from two elements by reacting at 700K and high pressure. It is highly soluble in water. It forms blue coloured solution with copper sulphate. Identify the gas and write all the reactions involved.
- GROUP 15 ELEMENT QUES .
1) An unknown salt X react with hot conc.
to produce a brown coloured gass which intensifies on addition on copper turnings . on adding dilute ferrous sulphate olution to an aqueous solution to an aquaeous solution of X and then carefully adding conc.
along the sides of testtube , a brown complex Y i formed at the interface between the solution and
. identify X and Y and write the reactions involved . 2) A transuclent waxy solid A on heating it on inert atmosphere is converted into its allotropic form B . Allotrope A on reaction with very dilute aqueous NaOH LIBERATES a highly poisonous gas C having rotten fih mell . The ubstance A reacts with excess of chlorine to form D which hydrolysis to form compound E .Identify A to E . Also write the reaction involved Thankyou
- mention the conditions required to maximise the yield of ammonia (group 15)
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