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OMEGA PUBLICATION-SAMPLE QUESTION PAPER -III (PUNJAB)-QUESTION
- What is the oxidation state of Cr in K(2)Cr0(3)
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- Explain Pauli’s exclusion principle.
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- Give two characteristics of homologous series.
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- If a plant has fibrous root then what kind of venation does its leaves...
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- What is screening effect ?
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- Define empirical formula.
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- Calculate mass of 10^20 atoms of oxygen.
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- What raw materials are needed for a plant to get the process of photos...
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- Explain why: Al utensils should not be kept in water over night.
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- Explain why Al wire is used to make transmission cables.
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- Distinguish between classical and photochemical smogs.
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- Define disproportionisation and simple displacement redox reactions.
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- Why do aldehydes and ketones have high dipole moments?
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- C Cl4 is not hydrolysed but SiCl4 can be hydrolysed with water. Why ?
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- Derive van der Waals’ equation of State for n moles of gas.'
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- Calculate the kinetic energy of 0.2 g of H2 at 27^@C.
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- Calculate enthalpy of the reaction : 4NH3(g) +3O2(g) rarr 2N2(g)+ 6H2O...
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- Explain Le Chatelier’s principle.
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- BF3 acts as a Lewis acid. Why ?
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- Can you prepare a solution having pH more than 14 ?
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