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Why are Zr and Hf of same size?...

Why are Zr and Hf of same size?

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CHHAYA PUBLICATION-MODEL QUESTION PAPER -Answer the following question (set-2)
  1. How does soap differ from detergent?

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  2. Write down the structure of paracetamol. Mention one use of it.

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  3. Why are Zr and Hf of same size?

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  4. For a dilute solution containing 2.5 g of a non-volatile non-electroly...

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  5. On hydrolysis, NCl(3) gives NH3 and HOCl while PCl3 gives H3PO3 and HC...

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  6. Define the term peptisation and mention its use

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  7. Explain the effect of temperature on the extent of physical and chemic...

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  8. Explain the magnetic behaviour with geometrical shape of [NiCl4]^(2-) ...

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  9. What is the role of t-butyl peroxide in the polymerisation of ethene?

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  10. What is biodegradable polymer? Give example.

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  11. Why is Frenkel defect not found in pure alkali metal halides?

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  12. Calculate packing efficiency of bee lattice

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  13. How much space is empty in a hexagonal closed packed solid?

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  14. What makes the crystal of KCl sometimes appear pink and how?

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  15. Write down van't Hoff equation of osmotic pressure.

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  16. The osmotic pressure of an aqueous solution of urea is 500 mm Hg at 42...

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  17. How many grams of chlorine can be produced by the electrolysis of molt...

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  18. Write two differences between potential difference and EMF.

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  19. In a conductive cell, at 298K, the resistance of 0.05M NaOH solution i...

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  20. What is the use of platinum foil in the hydrogen electrode?

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