मराठी

The Liquid Air Has Three Components X, Y and Z Whose Boiling Points Are : –186°C, –183°C and –196°C, Respectively. When Liquid Air is Fed into a Tall Fractional - Science

Advertisements
Advertisements

प्रश्न

The liquid air has three components X, Y and Z whose boiling points are : –186°C, –183°C and –196°C,
respectively. When liquid air is fed into a tall fractional distillation column from near its bottom and warmed
up slowly :

(a) Which component will be collected from near the bottom of the fraction distillation column ? Why ?

(b) Which component will be collected from the top part of the fractional distillation column ? Why ?

(c) Which component will be collected from the middle part of the fractional distillation column ? Why ?

(d) What could the component X, Y and Z be ?

टीपा लिहा

उत्तर

  1. Y will be collected from the area near the bottom of the fractional distillation column because it has highest boiling point (−183°C).
  2. Z will be collected from the top part of the fractional distillation column because it has lowest boiling point (−196°C).
  3. X will be collected from the middle part of the fractional distillation column because it has a boiling point −186°C, which is lower than that of Y but higher than that of Z.
  4. X is liquid argon, Y is liquid oxygen, and Z is liquid nitrogen.
shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 2: Is Matter Around Us Pure - Very Short Answers [पृष्ठ १०८]

APPEARS IN

लखमीर सिंह Chemistry [English] Class 9
पाठ 2 Is Matter Around Us Pure
Very Short Answers | Q 86 | पृष्ठ १०८

व्हिडिओ ट्यूटोरियलVIEW ALL [3]

संबंधित प्रश्‍न

 Match the following

Column A Column B
(a) Molecules (i) Water boils
(b) 100° C (ii) Evaporation
(c) 0° C (iii) Changes from solid to gas
(d) At all temperatures (iv) Matter
(e) Camphor (v) Water freezes

Fill in the blank :

The substances which can flow are called ________


What is Brownian motion? Draw a diagram to show the movement of a particle (like a pollen grain during Brownian motion.


In a beam of sunlight entering a room, we can sometimes see dust particles moving in a haphazard way in the air. Why do these dust particles move?


What name is given to those elements which are neither good conductors of electricity like copper nor insulators like sulphur ?


What elements do the following compounds contain ?

Sugar, Common salt


What are the two types of pure substances? Give one example of each type.


Which of the following is not an element ?


“Is malleable and ductile” best describes :


Which of the following statements are true for pure substances ?

  1. pure substances contain only one kind of particles
  2. pure substances may be compounds or mixtures
  3. pure substances have the same composition throughout
  4. pure substances can be exemplified by all elements other than nickel

What will happen if a saturated solution is :

  1. heated
  2. cooled

Which of the following are chemical changes and which physical ? Give reason.

  1. a glass bottle breaking
  2. coal burning in air
  3. making a cake
  4. wool being knitted into a sweater

Milk of Magnesia is :


Name the process which is used in milk dairies to separate cream from milk.


Which technique is used in a washing machine to squeeze out water from wet clothes while drying ?


Match the physical quantities given in column A to their S I units given in column B:

(A) (B)
(a) Pressure (i) cubic metre
(b) Temperature (ii) kilogram
(c) Density (iii) pascal
(d) Mass (iv) kelvin
(e) Volume (v) kilogram per cubic metre

Which of the following statements are true for pure substances?

(i) Pure substances contain only one kind of particles

(ii) Pure substances may be compounds or mixtures

(iii) Pure substances have the same composition throughout

(iv) Pure substances can be exemplified by all elements other than nickel


Solid is an arrangement of particles ______.


Atoms are tiny particles that repel each other when they are squeezed very close.


Define the term matter.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×