Question

Generally metallic oxides are basic and non-metallic oxides are acidic in nature. Solution of which of the following oxides in water will change the colour of blue litmus to red? *

sulphur dioxide

iron oxide

magnesium oxide

copper oxide

 

This is a required question

Which of the following property is not responsible for copper to be used as electrical conduction wires? *

ductility

good conductor of electricity

colour

it is solid

Metals and non-metals are used widely in everyday life. Which non-metal is essential for our life and all living beings inhale it during breathing? *

Carbon dioxide

Oxygen

Nitrogen

Water

 

This is a required question

Which liquid metal is used for making thermometers? *

Acid

Mercury

Alcohol

Water

Which of the following statement is incorrect? *

The property of metals by virtue of which they can be drawn into wires is called ductility.

Metals are good conductor of electricity but poor conductor of heat.

Articles made of metals produce ringing sound when struck hard.

Oxides of non-metals are acidic in nature.

Metal bells are used because of the following property of metals *

Good conductor of heat

Good conductor of electricity

Ductile

Sonorous

 

This is a required question

Non-metals find wide use in our daily life. Ramu's father suggested Ramu a non metal to disinfect water. Can you name the non-metal to be used *

Chlorine

Nitrogen

Iron

Copper

Which of the following is true? *

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Answer 1

Answer:

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Answer 2

Answer:

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