Advertisements
Advertisements
Question
Which of the following are homogeneous in nature?
(i) ice
(ii) wood
(iii) soil
(iv) air
Options
(i) and (iii)
(ii) and (iv)
(i) and (iv)
(iii) and (iv)
Advertisements
Solution
(i) and (iv)
Explanation:
Ice and air are homogeneous in nature since they have same composition throughout and there are no visible boundaries between the components.
APPEARS IN
RELATED QUESTIONS
State two characteristics of matter demonstrated by Brownian motion.
When a gas jar containing air is inverted over a gas jar containing bromine vapour, the red-brown bromine vapour diffuse into air. Explain how bromine vapour diffuse into air.
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?
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.
Name the property which enables metals to be drawn into wires.
What is meant by saying that metals are sonorous ?
What is the other name for impure substances ? Give two examples of impure substances.
What are the three groups into which all the elements can be divided ? Name two elements belonging to each group.
Which of the following does not have a fixed melting point/boiling point ?
How much water should be mixed with 12 mL of alcohol so as to obtain 12 % alcohol solution ?
Choose the correct answer.
A 5 per cent sugar solution means that :
What is the concentration of a solution which contains 16 g of urea in 120 g of solution ?
Which of the following will show Tyndall effect ? Why ?
- Salt solution
- Starch solution
- Milk
- Copper sulphate solution
Name the different types of solutions. Give one example of each.
What is meant by the concentration of a solution ?
How is water purified on a large scale at water works ? Explain with the help of a labelled diagram. Name the substance which is added to kill germs in the drinking water supply ?
Select the correct answer from A, B, C, D & E for the statement given below:
An atom or group of atoms _________ having a resultant charge.
Asmita went to buy an earthen pot. There she saw many things kept for sale.
What is the difference between a substance and an object?
The fluidity of solids: ______.
