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XII BOARDS PREVIOUS YEAR-XII BOARDS-IMPORTANT QUESTIONS FOR PRACTICE CHEMISTRY (THEORY-XII) UNSOLVED)
- Draw the structure of the compound named 4-methylpent-3-en-2-one
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- Name the deficiency diseases resulting from lack of Vitamins A and E i...
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- What are limited spectrum are antibiotics ? Give one example.
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- An aqueous solution of sodium chloride freezes below 273 K. Explain th...
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- The conductivity of 0.001 M acetic is 4 xx 10^(-5)S//cm. Calculate th...
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- Explain the following : (a) Same substance can act both as colloids ...
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- How are the following colloidal solutions prepared ? (a) Sulphar in ...
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- Explain the following : (a) NO(2) readily forms a dimer. (b) BiCI...
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- What is lanthanoid contraction? What are the consequences of lanthanol...
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- Explain the following reactions : (a) Gabriel Phthalimide reaction ...
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- Give chemical tests to distinguish between the following pairs of comp...
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- Explain the following terms with suitable examples : (a) Cationic de...
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- An element occurs in bcc structure. It has a cell edge length of 250pm...
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- The partial pressure of ethane over a saturated solution containing 6....
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- (a) What are fuel cells ? Explain the electrode reactions involved in ...
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- Lokash is a social worker. A milkman in the village has been complaini...
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- (a) How is a double salt different from a complex ? (b) Write IUPAC...
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- Explain the following : (a) The dipole moment of chlorobenzene is lo...
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- (a) Give mechanism of preparation of ethoxy ethane from ethanol. (b...
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- (a) Write the structural and functional differences between DNA and RN...
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