Advertisements
Advertisements
प्रश्न
Which of the following are compounds ?
- CO
- No
- NO
- Co
विकल्प
(i) and (ii)
(ii) and (iii)
(i) and (iii)
(i) and (iii)
(ii) and (iv)
Advertisements
उत्तर
(i) and (iii)
CO and NO are compounds. While CO is made up of carbon and oxygen, NO is made up of nitrogen and oxygen.
APPEARS IN
संबंधित प्रश्न
The smallest unit of matter that exists freely in nature is called ...........
Define matter.
Name two processes which provide the best evidence for the motion of particles in matter.
Classify the following into elements and compounds :
- H2O
- He
- Cl2
- CO
- Co
Name a metal which can be easily cut with a knife.
State whether colloidal solutions are homogeneous or heterogeneous.
How will you test whether a given solution is a colloidal solution ?
Explain what happens when a beam of light is passed through a colloidal solution.
What will happen if a saturated solution is :
- heated
- cooled
9.72 g of potassium chloride dissolves in 30 g of water at 70°C. Calculate the solubility of potassium chloride at that temperature.
What is a colloid ? Give two examples of colloids (or colloidal solutions)
What difference in the property of two miscible liquids enables their separation by fractional distillation ?
Name the source from which nitrogen and oxygen are obtained on a large scale.
Fill in the following blanks with suitable words :
A mixture of kerosene and petrol can be separated by .....................
Write a method to separate a mixture of sand and potash alum.
How will you separate water from mustard oil ?
What is fractional distillation ? What is the use of fractionating column in fractional distillation ?
Atoms are tiny particles that repel each other when they are squeezed very close.
Define the term matter.
