Atoms of which two elements among the fo...

Atoms of which two elements among the following are of same size ? Zr, Fe, Ru, Sc, La, Hf

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HIGHER SECONDARY EXAMINATION 2016
UNITED BOOK HOUSE|Exercise EXERCISE|62 Videos
HIGHER SECONDARY EXAMINATION 2018
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UNITED BOOK HOUSE-HIGHER SECONDARY EXAMINATION 2017-EXERCISE

Which of the following is not a food preservative?
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Mark the hydrophobic and hydrophilic parts of the following syn-thetic...
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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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