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UNITED BOOK HOUSE-HIGHER SECONDARY EXAMINATION 2017-EXERCISE
- Atoms of which two elements among the following are of same size ? Zr,...
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- What would be the value of paramagnetic spin moment of K3[Fe(CN)6]? (A...
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- For which phenomenon colloidal particles do not settle down?
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- It 193000 coulomb of electricity is passed through a metallic wire, ho...
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- Write the appropriate Nernst equation for the following half-cell reac...
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- Write down the van't Hoff equation for osmotic pressure of a solution....
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- When urea is added to water the freezing point decreases. Explain why.
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- A U-tube is completely filled with Fe(OH)3 sol and a potential differe...
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- Define heterogeneous catalysis with an example.
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- How will you distinguish chemically between HN3 and HN3 ?
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- Writ down the balanced chemcial equation for the reaction of H2S with ...
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- Explain why Cu(NH(3))4]^(2+) ion is coloured but [Cu(CN)4]^(3-) ion is...
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- What are the two monomer units of terylene? Write the repeating unit o...
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- What is the ferromagnetic substance?
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- KBr crystallises in face-centered cubic (fcc) crystals. The density an...
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- Which kind of defect in ionic crystals does not alter the density ?
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- An element X has atomic mass 60 g mol^(-1) and density 6.23 g cm^(-3)....
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- 20 g of a solid solute is dissolved in 180 g of water. At 100^(@)C the...
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- What is the fuel cell? Write down anodic reaction and cathodic reactio...
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- Define specific conductivity ?
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