MEDIUM
6th Maharashtra Board
IMPORTANT
Earn 100

List of substances: Spirit, camphor, petrol, ghee, coconut oil, naphthalene balls, ammonium chloride(navsagar).

Which solids directly change into the gaseous state from the given list of substances?

Important Questions on Substances in the Surroundings - Their States and Properties

MEDIUM
6th Maharashtra Board
IMPORTANT
General Science Standard Six>Chapter 5 - Substances in the Surroundings - Their States and Properties>Can you tell?
Does water change into vapour the moment we place the vessel on a stove? Does water kept in fridge change at once into ice?
MEDIUM
6th Maharashtra Board
IMPORTANT
General Science Standard Six>Chapter 5 - Substances in the Surroundings - Their States and Properties>Use your brain power!

The chart given below shows the boiling point and freezing point of some substances. State whether these substances are solid, liquid or gaseous at room temperature?

Substance Freezing point Boiling point
Candle 60∘C 350∘C
Plastic  >250∘C 954∘C
Iron 1535∘C 2862∘C

 

MEDIUM
6th Maharashtra Board
IMPORTANT
General Science Standard Six>Chapter 5 - Substances in the Surroundings - Their States and Properties>Use your brain power!
On opening a box of camphor, its smell spreads all around. Why does this happen?
MEDIUM
6th Maharashtra Board
IMPORTANT
General Science Standard Six>Chapter 5 - Substances in the Surroundings - Their States and Properties>Let's try this

Take some sand in the crucible. Put few iodine crystals in it. Place the crucible on tripod to heat it. Block the stem of the funnel with a cotton plug and place it inverted on the crucible. Light the burner and heat the mixture in the crucible. Observe the changes. Why does this happen?

EASY
6th Maharashtra Board
IMPORTANT
General Science Standard Six>Chapter 5 - Substances in the Surroundings - Their States and Properties>Can you tell?

Identify the objects shown in the figure. From which substances are they made? What are these substances called as a group?

Question Image

EASY
6th Maharashtra Board
IMPORTANT
General Science Standard Six>Chapter 5 - Substances in the Surroundings - Their States and Properties>Can you tell?>Q 1
Why are the electric boards fitted on the wall made of plastic or wood?
EASY
6th Maharashtra Board
IMPORTANT
General Science Standard Six>Chapter 5 - Substances in the Surroundings - Their States and Properties>Can you tell?>Q 2

The handle of a cooker is made of plastic. Why?

MEDIUM
6th Maharashtra Board
IMPORTANT
General Science Standard Six>Chapter 5 - Substances in the Surroundings - Their States and Properties>Exercise>Q 1
In the paragraph below, write ‘solid’, ‘liquid’ or ‘gas’ in each of the brackets depending on the substance referred to just before.
On a bright sunny day, Riya and Gargi are playing with a ball ( _____ ) in the park. Gargi feels thirsty. So, Riya brings tender coconut water ( _____) for her. At the same time, a strong breeze ( _____ ) starts blowing, and it also begins to rain ( _____ ). They run back into the house ( _____ ), change their clothes ( _____) and then their mother gives them a cup ( _____ ) of hot milk ( _____ ) to drink.