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प्रश्न
Give reason.
While purchasing canned food, its expiry date should be checked.
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उत्तर
While purchasing canned food, their expiry date should be checked because an expiry date indicates for how long a canned food is safe for consumption. Canned foods with expired dates are not considered worth consumption as they could affect your health. They might get contaminated with microorganisms like bacteria or may have no nutritional value left after their expiration.
संबंधित प्रश्न
What do you observe when :
a piece of paper is burnt
State whether the following is physical or chemical changes.
burning of wood -
State whether the following is physical or chemical changes.
passing electric current through a heater rod —
Distinguish between the following.
Natural change and man-made change
Under which different types can the following changes be classified?
Occurrence of an earthquake.
Give reason.
A dry handkerchief gets wet at once on dipping in water, but it takes longer for a wet handkerchief to dry.
Fill in the blanks with the appropriate words of the statement given below:
Chemical changes may involve exchange of energy in the form of __________ and _________.
Fill in the blank with the correct word of the statement given below:
Ammonium chloride, a sublimable solid undergoes _________ on heating.
Observe the picture containing a kettle and note that it has salt water in it and answer the following questions:
- What is name of the process that is done to the kettle?
- What will happen to the content of the kettle?
- What kind of change is occurring on the cold surface of the metal plate?
- What can you say about the quality of water that is obtained in the beaker?
Paper, LPG, CNG petrol, etc, are ______ substances.
