The conversion of a solid into vapours without passing through the liquid state is called :(a) vaporization (b) fusion(c) sublimation (d) freezing

Academic Chemistry NCERT Class 9

Correct Answer: (c) sublimation

Explanation: The conversion of a solid into vapours without passing through the liquid state is called sublimation.

Tutorialspoint

Simply Easy Learning

Updated on: 10-Oct-2022

54 Views

Choose the correct statement of the following(a) Conversion of solid into vapours without passing through the liquid state is called sublimation.(b) Conversion of vapours into solid without passing through the liquid state is called vaporisation.(c) Conversion of vapours into solid without passing through the liquid state is called freezing.(d) Conversion of solid into liquid is called sublimation.
(a) Conversion of solid to vapour is called sublimation. Name the term used to denote the conversion of vapour to solid.(b) Conversion of solid state to liquid state is called fusion; what is meant by latent heat of fusion?
Fill in the blanks:(a) Evaporation of a liquid at room temperature leads to a——— effect.(b) At room temperature the forces of attraction between the particles of solid substances are———than those which exist in the gaseous state.(c) The arrangement of particles is less ordered in the ——— state. However, there is no order in the ——— state.(d) ——— is the change of solid state directly to vapour state without going through the ——— state.(e) The phenomenon of change of a liquid into the gaseous state at any temperature below its boiling point is called———.
The splitting up of white light into seven colours on passing through a glass prism is called:(a) refraction (b) deflection (c) dispersion (d) scattering
Name the temperature at which :(a) a liquid changes into a gas.(b) a solid changes into a liquid.
The conversion of gas into liquid is calledfreezingcondensationsublimationfusion
State two characteristic properties each of: (a) a solid (b) a liquid (c) a gas
The technique which is used to separate particles of a solid suspended in a liquid quickly is called :(a) decantation (b) centrifugation (c) sedimentation (d) filtration
The fusion is the process in whichliquid changes into solid solid changes into liquidsolid changes into gasgas changes into solid
Sewage is mainly a(a) liquid waste(b) solid waste(c) gaseous waste(d) mixture of solid and gas
Which of the following statements is/are false?a. The male gamete is larger, with a nucleus and more cytoplasm than the female gamete. b. The fusion of the two gametes is called fertilization. c. The product of fusion of the two gametes is called the zygote.(a) Only a(b) Only a and b(c) Only b(d) Only b and c(e) Only c
State the differences between solid, liquid and gas.
The given mixture contains three constituents A, B and C. The constituent A is a yellow coloured, solid element which dissolved in a liquid D. The constituent B is a blue coloured salt which is insoluble in liquid D but dissolves easily in another liquid E. The constitudent C is a liquid which is used in cooking food and forms a solid fat on hydrogenation.(a) What do you think could (i) constituent A, and (ii) liquid D be?(b) What could (i) constituent B, and(ii) liquid E be?(c) What could liquid C be?(d) How will you separate the mixture containing A, B and C?
DIRECTIONS: Read the passage(s) given below and answer the questions that follow. Passage- The cell which results after fusion of gametes is called a zygote. The fusion of male and female gametes (to form a zygote) is called fertilization. The zygote develops into an embryo. The cell which results after fusion of male gametes and female gametes is called(a) zygote(b) fertilization(c) embryo(d) none of these
A, B and C are all liquids. Liquid A has a comparatively low boiling point. On heating, liquid A vaporises completely without leaving behind any residue. Liquid A is being used increasingly as a fuel in motor vehicles either alone or by mixing with petrol. Liquid B has a very high boiling point. It also vaporises completely on heating, without leaving any residue. Liquid B is a conductor of electricity and used in making thermometers. Liquid C has a moderate boiling point. On heating, liquid C vaporises leaving behind a white solid D which is used in cooking vegetables. The condensation of vapours from C give a liquid E which turns anhydrous CuSO4 to blue.(a) Which liquid could be an element? Name this element.(b) Which liquid could be a mixture? Name this mixture.(c) Which liquid could be a compound? Name this compound.(d) What could the solid D be?(e) What do you think is liquid E?

Kickstart Your Career

Get certified by completing the course

Get Started

Advertisements