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How will you account for 104.5° bond angle in water?

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प्रश्न

How will you account for 104.5° bond angle in water?

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उत्तर

In water hybridisation of oxygen is sp3. Angle should be 109° (approx.) but due to LP – LP repulsion bond angle reduces to 104.5°.

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Physical Properties of Water
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पाठ 9: Hydrogen - Multiple Choice Questions (Type - I) [पृष्ठ १२०]

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एनसीईआरटी एक्झांप्लर Chemistry Exemplar [English] Class 11
पाठ 9 Hydrogen
Multiple Choice Questions (Type - I) | Q 60 | पृष्ठ १२०

संबंधित प्रश्‍न

Arrange the following:

CaH2, BeH2 and TiH2 in order of increasing electrical conductance.


Why is it said that-

Water is a universal solvent.


Sea water is a bad conductor of electricity. 


State whether the following statement is true or false.

The substance in which a solute dissolves is called a solvent.


Explain the picture in your own words.


Why should a glass bottle completely filled with water never be kept in a freezer?


Define the following.

Freezing point


Define the following.

Boiling point


Some of the properties of water are described below. Which of them is/are not correct?

(i) Water is known to be a universal solvent.

(ii) Hydrogen bonding is present to a large extent in liquid water.

(iii) There is no hydrogen bonding in the frozen state of water.

(iv) Frozen water is heavier than liquid water.


Give reasons: Lakes freeze from top towards bottom.


\[\ce{H2O2}\] is a better oxidising agent than water. Explain.


Melting point, enthalpy of vapourisation and viscosity data of \[\ce{H2O}\] and \[\ce{D2O}\] is given below :

  \[\ce{H, O}\] \[\ce{D2O}\]
Melting point / K 373.0 374.4
Enthalpy of vapourisation at (373 K)/kJ mol–1 40.66 41.61
Viscosity/centipoise 0.8903 1.107

On the basis of this data explain in which of these liquids intermolecular forces are stronger?


Explain why \[\ce{HCl}\] is a gas and \[\ce{HF}\] is a liquid.


The boiling point of water increases with ______ in pressure.


The freezing point of water ______ with an increase in pressure.


Pure water boils at ______ °C at one atmospheric pressure.


Freezing of water will cause an ______ is the volume.


Water is circulated around the car engine using the ______ pump and the heat is absorbed.


What is the taste of distilled water & boiled water?


The density of gold is 19 g/cm3. If 1.9 × 10−4 g of gold is dispersed in one litre of water to give a sol having spherical gold particles of radius 10 nm, the number of gold particles per mm3 of the sol will be ______ × 106.


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