Science

The Latin name of copper

• Cuppurum

• Copper

• Cupper

• Cuper

There are ______________ elements found in Nature

• 111

• 118

• 181

• 108

Hydrogen is made up of ______ atoms of Oxyzen

• 8

• 10

• 9

• 2

The chemical formula of a compound tell about the ___________ present in it

• Atoms

• Elements

• Mixtures

• None of the Above

3 Molecules of Water are written are _______________

• 3HO

• 2HO₃

• 2H₃O

• 3H₂O

The hearing range of human ear is_________

• 20 Hz to 20,000 Hz

• 20 Hz to 25,000 Hz

• less than 20 Hz

• more than 25,000 Hz

The pitch of sound depends on __________

• Frequency

• Amplitude

• Time Period

• None of these

The maximum extent of a vibration or oscillation of a body is called _________________

• Amplitude

• Time Period

• Frecuency

• Vibration

Sound cannot travel through ______________

• Gas

• Liquid

• Solid

• Vaccum

Frequency is expressed in _______________

• Hertz

• Metre

• Inch

• litre