1.
What is called fundamental particles?
Why is electron affinity of chlorine greater than flourine?
Complete the equation according to the stem and identify the compound D D D.
Discuss the imortance of 'D' compound as a food preservative according to the stem.
2. (i) A+O2⟶A2O5 \mathrm{A}+\mathrm{O}_{2} \longrightarrow \mathrm{A}_{2} \mathrm{O}_{5} A+O2⟶A2O5
(ii) AH3+H+⟶A+H4 \mathrm{AH}_{3}+\mathrm{H}^{+} \longrightarrow \mathrm{A}^{+} \mathrm{H}_{4} AH3+H+⟶A+H4
Here ' A A A ' is the element of 3rd 3^{\text {rd }} 3rd period.
State the Hund's rule.
Why HCl \mathrm{HCl} HCl is stronger acid than HF? Explain.
Explain the nature of aqueous solution of the oxide in the stem.
Though the hybridization of the central atom of AH3 \mathrm{AH}_{3} AH3 and AH4+ \mathrm{AH}_{4}^{+} AH4+are same but their structures are different-Analyze.
3.
What is called catalyst?
'P' orbital contains highest 6 electrons.-Explain.
Explain with cause the structural difference of the hydrides of R \mathbf{R} R and X \mathbf{X} X.
Showed graph of the elements in the stem is not linear.-Explain with cause.
4.
What is called safe food?
Why conc. HCl \mathrm{HCl} HCl is used for crystallization of NaCl \mathrm{NaCl} NaCl ? Explain.
Calculate the wavelength of the radiated ray for the transition of e2 e_{2} e2 electron.
Analyse the difference of application of the radiated ray for the transition of e1 e_{1} e1 and e2 e_{2} e2 electrons.
5. A2( g)+2 B2( g)Δ2 atm2AB3( g)ΔH=−92.38KJ \mathrm{A}_{2}(\mathrm{~g})+2 \mathrm{~B}_{2}(\mathrm{~g}) \frac{\Delta}{2 \mathrm{~atm}} 2 \mathrm{AB}_{3}(\mathrm{~g}) \Delta \mathrm{H}=-92.38 \mathrm{KJ} A2( g)+2 B2( g)2 atmΔ2AB3( g)ΔH=−92.38KJ
At equilibrium 80%AB3 80 \% \mathrm{AB}_{3} 80%AB3 is produced.
What is pH \mathrm{pH} pH ?
Why IR ray used in medical sector? Explain.
Determine the Kp \mathrm{K}_{\mathrm{p}} Kp value in the equation according to the stem.
What should be done if you want highest amount of product? Analyse logically.
