Advertisements
Advertisements
Question
Which of the following are compounds ?
- CO
- No
- NO
- Co
Options
(i) and (ii)
(ii) and (iii)
(i) and (iii)
(i) and (iii)
(ii) and (iv)
Advertisements
Solution
(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
RELATED QUESTIONS
What are the two conditions for the interconversion of states of matter ?
An inflated balloon full of air goes down slowly (becomes smaller and smaller slowly) even though the knot at the mouth of the balloon is airtight. And after a week all the air has escaped from the balloon. Explain how the air particles got out of the balloon.
Which type of elements, metals or non-metals, show the property of brittleness ?
What name is given to those elements which are neither good conductors of electricity like copper nor insulators like sulphur ?
Draw a flow-chart for the schematic representation of different types of matter.
What happens when the temperature of a saturated sugar solution is increased ?
What is the difference between solutions and colloids ?
Define Sol and give one example.
What is a colloid ? Give two examples of colloids (or colloidal solutions)
Which one of the following is not a chemical change ?
What type of magnet is fitted on a crane to separate scrap iron objects from a heap of waste materials in factories ?
Which technique can be used to detect and identify traces of poison present in the stomach wash of a person ?
Write a method to separate a mixture of sand and potash alum.
There are three liquids A, B and C, all having different densities and different boiling points. Liquids A and C are organic in nature whereas liquid B is considered to be inorganic. When liquids A and B are put together in a container, they form a single layer. On the other hand, when, liquids B and C are mixed, they form two separate layers :
(a) Which process will you use to separate a mixture of A and B ?
(b) Which method will you use to separate a mixture of B and C ?
(c) Name the liquids which would behave like (i) A (ii) B and (iii) C.
Why wires cannot be drawn from materials such as stone or wood?
You want to wear your favourite shirt to a party, but the problem is that it is still wet after a wash. What steps would you take to dry it faster?
Atoms or groups of atoms having a charge are called ______.
Liquids cannot be compressed and they have fixed volume.
The pressure of gases does not depend on the temperature of the gas and the volume it occupies.
Give an example of a molecule.
