10+1 PSEB Chemistry Sample Paper

Subject – Chemistry

  1.  Define Isotopes & Isobars with examples.

  2.  Define Enthalpy and Avogadro law.

  3.  Write general configuration of P block elements.

  4.  Define Reduction .

  5.  Define global warming & one factor responsible for it.

6.   Explain why cations are smaller and anions are larger  in radii than their parent atom?

  7.  What are major differences between metals and non metals? Give an example of  liquid metal at room temperature.

  8.  Describe the property of catenation with example of carbon.

  9.  Calculate the oxidation number of S in H₂SO₄ & N in HNO₃.

10.  Draw molecular orbital diagram of H_2, H₂⁺ & He₂.

11.  Define Hyper conjugation effect with example.

12.  Calculate number σf & π bonds in the following structure/ following  molecule.

            CH₂=    CH₂       CH₂Cl₂

13.  Balance the following redox reaction by Ion electron method

       Cr₂O^2- _{7 (aq)}+ SO₂(g)→ Cr³⁺ _(aq)+ SO₄^2- _(aq) in acidic solution.

14.  Define oxidation. Calculate the oxidation number of:

       1. S in H₂S             2. C in CO₂                               3. Pb in Pb₃O₄

15. Describe usefulness of Bohar's model. Calculate the mass of a photon with wavelength 3.6 A°.

16.  Define resonance with examples. Draw resonance structure of Benzene & Ozone.

17.  Define covalent bond. Draw structure of CH₄ & H₂O.

18.  Write a short note on hydrogen bonding.

19.  Write about unique position of hydrogen in periodic table.

20.  Write a brief note on carbocation & carbanion with example.

21.  Select Electrophiles & nucleophiles out  of H⁺, Na⁺, NH₃, OH^-, C₂H₅OH, C1^-.

22.  Write definitions of 3 gaseous laws.A vessel of 120ml capacity contains a certain mass of a gas at 20° c and 750mm pressure. The gas was transferred to a vessel is 18