Advertisements
Advertisements
प्रश्न
Why are liquids and gases categorised as fluids?
Advertisements
उत्तर
The liquids and gases have a property to flow i.e. the molecules can move past and tumble over one another freely. Hence they have been categorized as fluids.
APPEARS IN
संबंधित प्रश्न
The major binding force in diamond is_______________ .
(a) Covalent bond
(b) Ionic bond
(c) Metallic bond
(d) Co-ordinate covalent bond
Explain ionic solids are hard and brittle.
Copper crystallises into a fcc lattice with edge length 3.61 × 10−8 cm. Show that the calculated density is in agreement with its measured value of 8.92 g cm−3.
Answer the following in one or two sentences.
A solid is hard, brittle and electrically nonconductor. Its melt conducts electricity. What type of solid is it?
Sodium crystallizes in bcc structure. If the edge length of unit cell is 4.3 × 10-8 cm, the radius of Na atom is ______.
An ionic compound AxBy crystallizes in fcc type crystal structure with B ions at the centre of each face and A ion occupying corners of the cube. the correct formula of AxBy is
Solid CO2 is an example of ____________.
Assertion: monoclinic sulphur is an example of a monoclinic crystal system
Reason: for a monoclinic system, a ≠ b ≠ c and α = γ = 90°, β ≠ 90°
In calcium fluoride, having the flurite structure the coordination number of Ca2+ ion and F− Ion are ____________.
Give any three characteristics of ionic crystals.
Which among the following is an example of non-polar molecule?
London forces are present in ____________.
Which of the following is a network solid?
Iodine molecules are held in the crystals lattice by ______.
Which of the following cannot be regarded as molecular solid?
(i) SiC (Silicon carbide)
(ii) AlN
(iii) Diamond
(iv) I2
How many chloride ions are surrounding sodium ions in sodium chloride crystal?
Who introduced the term covalent bond?
The covalent bond length is the shortest in which one of the following bonds?
Among the following which is the best description of water in the solid phase?
